JP5028975B2 - Light source device, projector and monitor device - Google Patents

Description

  The present invention relates to a light source device, a projector, and a monitor device.

  In recent years, as the demand for miniaturization of projectors has increased, with the increase in output of semiconductor lasers and the appearance of blue semiconductor lasers, projectors or displays using laser light sources have been studied. Since the wavelength range of the light source is narrow, the color reproduction range can be greatly widened, and the size can be reduced and the number of components can be reduced. Yes.

By the way, there exists a possibility that a laser light source may be used for purposes other than a display outside the range of a display device, for example. In order to avoid being used for such a purpose, when the laser resonator (laser light source unit) is removed from the laser device for replacement or the like, laser oscillation from the removed laser resonator is prevented. A laser device has been devised (for example, see Patent Document 1).
JP 2001-267670 A

However, a safety device such as an interlock mechanism provided in the laser device is provided only for the purpose of preventing accidents due to carelessness in use. Therefore, such a safety device cannot prevent the laser resonator part from being intentionally taken out of the casing of the laser device and diverting the laser resonator to other uses.

  In the technique described in Patent Document 1, since the laser resonance structure is destroyed by removing the laser resonator from the housing, the laser resonator is mechanically broken like a semiconductor laser. However, it is practically difficult to apply the method to those that are difficult, resulting in an increase in manufacturing cost.

  Further, since the technique described in Patent Document 1 has a structure in which a mirror is bonded to a housing, there is a possibility that the mirror is displaced due to an environmental change such as temperature and the resonance state is changed. Moreover, in the structure which destroys the scanning mirror in the technique of the said patent document 1, even if a scanning mirror is destroyed, there exists a danger that a laser light source part may be abused.

  The present invention has been made to solve the above-described problems, and when a light-emitting element is removed, the light-emitting element cannot reliably emit light, but the manufacturing cost is increased and the performance is improved. An object of the present invention is to provide a light source device, a projector, and a monitor device capable of suppressing deterioration and the like.

In order to achieve the above object, the present invention provides the following means.
The light source device of the present invention includes a light emitting element that emits laser light, a support member that supports the light emitting element, a substrate that is fixed to the support member and electrically connected to the light emitting element, the light emitting element, A wiring that electrically connects the substrate and supplies current; a cover member that is at least partially capable of transmitting light; and that covers the light-emitting element fixed to the substrate; and the substrate and the cover member; And a fixing force between the substrate and the cover member by the fixing member is larger than a fixing force between the support member and the substrate.

In the light source device according to the present invention, when the cover member covering the light emitting element is removed for the purpose of taking out the light emitting element, the adhesive force between the cover member and the substrate by the fixing member is the adhesion between the substrate and the fixing member. Since it is larger than the force, the cover member is peeled off from the support member together with the substrate. Thereby, since the wiring which connects a light emitting element and a board | substrate is cut | disconnected, light emission of the laser beam from a light emitting element can be prevented reliably. Accordingly, it is possible to prevent the light-emitting element from being taken out from the display device and misused.
In addition, since the present invention has a structure in which the wiring is cut when the cover member is removed from the substrate, the resonance structure is not adversely affected, so that the performance of the light emitting element is deteriorated during normal use. Can be avoided. Furthermore, since it is not necessary to use a mechanism or the like for cutting the wiring, it becomes possible to suppress the increase in manufacturing cost with a simple configuration.

  Moreover, it is preferable that the light source device of this invention is provided in the surface or inner surface which contacts the said board | substrate of the said cover member.

  In the light source device according to the present invention, since the fixing member is provided on the surface or inner surface of the cover member that contacts the substrate, it is difficult to confirm the fixing member from the appearance. Therefore, it is difficult to remove only the fixing member compared to the case where the fixing member is provided on the outer surface of the cover member, which can be confirmed from the appearance, so that the light emitting element can be prevented from being abused. It becomes easy. The same applies to the case where the fixing member is provided on both the part that can be confirmed from the appearance and the part that cannot be confirmed, and even if only the fixing member of the part that can be confirmed from the appearance is cut off, the fixing member is also present on the part that cannot be confirmed. Since it is provided, it is possible to reliably cut the wiring.

In the light source device of the present invention, the fixing member is preferably an adhesive.
In the light source device according to the present invention, since the fixing member is an adhesive, it is easy to flow between the substrate and the cover member, so that the substrate and the cover member can be firmly fixed.

In the light source device of the present invention, it is preferable that the wiring is a bonding wire, and the light emitting element and the substrate are connected only by the bonding wire.
In the light source device according to the present invention, since the bonding wire is, for example, a metal wire having a diameter of 100 μm, the bonding wire can be cut with a very slight force. Therefore, when the cover member is to be removed from the substrate, the bonding wire is easily cut, so that it is possible to reliably prevent the laser light from being emitted from the light emitting element.

  In the light source device of the present invention, it is preferable that a concave portion is formed on a surface of the cover member that contacts the substrate, and the concave portion is filled with the adhesive.

  In the light source device according to the present invention, since the concave portion formed on the surface of the cover member that contacts the substrate is filled with the adhesive, there are few protruding portions of the adhesive when the cover member and the substrate are fixed. Become. Thereby, workability | operativity, such as mounting the light source device of this invention in another member, improves. Further, since it is difficult to confirm the adhesive from the appearance, only the adhesive cannot be removed, and thus it is possible to prevent the light emitting element from being abused. Further, even if the adhesive is confirmed from the appearance and only the adhesive is to be removed, it is difficult to remove only the adhesive because the adhesive is filled up to the concave portion of the surface that contacts the substrate of the cover member. Moreover, wiring is cut | disconnected by the act which forcedly removed the adhesive agent. Accordingly, it is possible to prevent laser light from being emitted from the light emitting element.

  In the light source device of the present invention, it is preferable that a recess is formed on the inner side of the surface of the cover member that contacts the substrate, and the recess is filled with the adhesive.

  In the light source device according to the present invention, since the concave portion formed on the inner surface side of the surface that contacts the substrate of the cover member is filled with the adhesive, the cover member and the substrate are bonded from the exterior when they are fixed. It becomes difficult to confirm the agent. Therefore, it is difficult to remove only the adhesive compared to the case where the adhesive is provided at a position that can be confirmed from the appearance such as the outer surface of the cover member. It becomes easy. Moreover, since the recessed part opened in the inner surface side of a cover member is formed, since a contact area with an adhesive agent becomes large, it becomes possible to adhere | attach a board | substrate and a cover member more firmly.

In the light source device of the present invention, a substrate insertion hole into which the substrate can be inserted is formed in a part of the cover member, and the substrate is inserted into the substrate insertion hole and the adhesive is filled. It is preferable.
In the light source device according to the present invention, since the substrate insertion hole into which the substrate can be inserted is formed in a part of the cover member, the substrate is sandwiched between the cover members via an adhesive. Thus, when the cover member is to be removed, the substrate is pulled together with the cover member, so that the wiring can be reliably cut.

  In the light source device of the present invention, it is preferable that a through hole penetrating from the outer surface to the inner surface is formed in the cover member, and the adhesive is filled in the through hole.

  In the light source device according to the present invention, after the cover member is placed at a predetermined position on the substrate, the adhesive is filled from the through hole formed in the cover member. Thereby, after aligning a cover member, since a board | substrate and a cover member can be adhere | attached, it becomes possible to adhere | attach a cover member accurately. Moreover, since an adhesive agent can be inject | poured into an inner surface side by the through-hole formed in the cover member, the inner surface of a cover member and a board | substrate can be adhere | attached. Accordingly, since the protruding portion of the adhesive is reduced on the outer surface side of the cover member, workability is improved. Furthermore, since the adhesive is filled in the through hole, an action such as removing the adhesive on the inner surface side of the cover member from the through hole cannot be performed, so that it is possible to prevent the light emitting element from being abused in advance. It becomes possible.

  A projector according to the present invention includes the light source device described above, a light modulation device that modulates light emitted from the light source device in accordance with an image signal, and a projection device that projects an image formed by the light modulation device. It is characterized by that.

  In the projector according to the present invention, the light emitted from the light source device enters the light modulation device. Then, the image formed by the light modulation device is projected by the projection device. At this time, as described above, the light source device has a structure in which the wiring is cut when the cover member of the light source device is removed, so that the light emitting element is prevented from being abused by being removed. Is possible.

A monitor device according to the present invention includes the light source device described above and an imaging unit that captures an image of a subject using light emitted from the light source device.
In the monitor device according to the present invention, the light emitted from the light source device irradiates the subject, and the subject is imaged by the imaging means. At this time, as described above, the light source device has a structure in which the wiring is cut when the cover member of the light source device is removed, so that the light emitting element is prevented from being abused by being removed. Is possible.

  Hereinafter, embodiments of a light source device, a projector, and a monitor device according to the present invention will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

[First Embodiment]
A first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is an external view showing an example of a light source device according to the first embodiment of the present invention, FIG. 2 is a schematic cross-sectional view showing the inside of the light source device, and FIG. 3 is a substrate used in the light source device. FIG. 4 is a schematic cross-sectional view showing a state in which the wiring of the light source device is cut.
The light source device 1 of the present embodiment is a device that forms a light source such as a display device, an optical communication device, an audio device, and an information processing device.

As shown in FIG. 1, the light source device 1 includes a light emitting element 10 that emits laser light, a base (support member) 11, an adhesive (fixing member) 12, a flexible substrate (substrate) 13, and a cover member. 14, and the flexible substrate 13 is sandwiched between the base 11 and the cover member 14.
As shown in FIG. 2, a light emitting element 10 that emits laser light is die-bonded to one surface 11a of the base 11 by solder. A flexible substrate 13 is bonded to one surface 11 a of the base 11. As shown in FIGS. 2 and 3, the flexible substrate 13 is provided with a wiring pattern connected to the light emitting element 10 and a driving IC 15, and a rectangular shape for directly attaching the light emitting element 10 to the base 11. A mounting hole 13e is formed. Further, one end 13a side of the flexible substrate 13 is installed on the base 11, and the other end 13b side opposite to the one end 13a extends outward from the base 11, and a drive IC 15 or the like is provided in the extended portion. It is placed. The light emitting element 10 is disposed in the mounting hole 13e of the flexible substrate 13 as shown in FIG.

As shown in FIG. 2, the cover member 14 has a hollow portion 14 a inside and is disposed so as to cover the light emitting element 10 by the hollow portion 14 a, and protects the light emitting element 10. At this time, the rectangular bottom surface 14 b of the cover member 14 is in contact with the flexible substrate 13, and the flexible substrate 13 is sandwiched between the base 11 and the cover member 14. In addition, an adhesive 12 is provided on the outer side surface 14 c and the inner side surface 14 d of the cover member 14 so as to cover the contact portion between the bottom surface 14 b of the cover member 14 and the flexible substrate 13. The cover member 14 and the flexible substrate 13 are bonded by the adhesive 12. The adhesive force between the flexible substrate 13 and the cover member 14 by the adhesive 12 is larger than the adhesive force between the base 11 and the flexible substrate 13. As the adhesive 12, an epoxy resin having thermosetting properties is used. Further, the adhesive 12 provided on the inner side surface 14 d of the cover member 14 is in a position that is difficult to confirm from the appearance of the light source device 1.
Further, the cover member 14 is provided with an opening 14f on the upper surface 14e facing the light emitting element 10, and a glass 16 is fitted into the opening 14f. Thereby, the light emitted from the light emitting element 10 passes through the glass 16 and is emitted to the outside.

  The light emitting element 10 and the wiring pattern on the flexible substrate 13 are connected by a bonding wire 17. The bonding wire 17 is a thin wire such as Au or Al. The wire diameter of the bonding wire 17 is, for example, several tens nm to several hundreds μm. Such connection by the bonding wire 17 needs to be performed by an expensive manufacturing apparatus called a bonding machine. The bonding machine, for example, presses the bonding wire 17 to a connection location while using ultrasonic waves and heat together. In addition, the bonding wire 17 forms a wiring for supplying a current from the driving IC 15 provided on the flexible substrate 13.

  With the above configuration, when the cover member 14 is removed from the flexible substrate 13 and pulled in the direction K away from the base 11, the adhesive 12 bonds the flexible substrate 13 and the cover member 14 as shown in FIG. 4. Since the force is larger than the adhesive force between the base 11 and the flexible substrate 13, the cover member 14 is peeled from the base 11 together with the flexible substrate 13. Accordingly, the bonding wire 17 that connects the light emitting element 10 and the flexible substrate 13 is also pulled together with the flexible substrate 13, and thus the bonding wire 17 is cut. The bonding wire 17 is a very thin wire as described above, and is a conductor that is very easy to cut. Therefore, it is very difficult to remove the cover member 14 from the flexible substrate 13 without cutting the bonding wire 17.

In the light source device 1 according to the present embodiment, the adhesive force between the flexible substrate 13 and the cover member 14 due to the adhesive 12 is larger than the adhesive force between the base 11 and the flexible substrate 13, so The bonding wire 17 can be cut in conjunction with the movement of removing 14. Moreover, since it is the structure by which the bonding wire 17 is cut | disconnected when it tries to remove the cover member 14 from the flexible substrate 13, the deterioration of the performance of the light emitting element 10 can be avoided like the past. Furthermore, since it is not necessary to use a mechanism or the like for cutting the bonding wire 17, it becomes a simple configuration and it is possible to suppress an increase in manufacturing cost.
That is, in the light source device 1 of the present embodiment, when the cover member 14 is to be removed from the flexible substrate 13, the light emitting element 10 cannot reliably emit light, but the manufacturing cost is increased and the performance is deteriorated. Can be suppressed.

In addition, although the adhesive agent 12 was used as what fixes the cover member 14 and the flexible substrate 13, if it can fix, it will not restrict to this. The adhesive 12 is not limited to a thermosetting resin, but may be an ultraviolet (UV) curable type or an electron beam (EB) curable type.
Moreover, it is preferable that the light emitting element 10 and the flexible substrate 13 are connected only by the bonding wire 17. In this configuration, when the cover member 14 is to be removed from the flexible substrate 13, the bonding wire 17 that is a thin line is easily cut. Therefore, since the electrical connection between the driving IC 15 on the flexible substrate 13 and the light emitting element 10 is cut off, it is possible to reliably prevent the emission of laser light from the light emitting element 10.
Further, the adhesive 12 is provided on the outer surface 14c side and the inner side surface 14d side of the cover member 14, but the adhesive is provided on either one of the outer side surface 14c side and the inner side surface 14d side. 12 may be provided.

  Furthermore, in order to further strengthen the adhesive force between the flexible substrate 13 and the cover member 14, as shown in FIG. 5, a through hole 20 that penetrates from the outer surface 14c to the inner surface 14d in the vicinity of the bottom surface 14b of the cover member 14. May be provided. With this configuration, since the adhesive 12 on the outer surface 14 c side and the adhesive 12 on the inner surface 14 d side are connected by the adhesive 12 in the through hole 20, an attempt is made to remove the cover member 14 from the flexible substrate 13. In this case, the flexible substrate 13 is easily pulled together with the cover member 14. Therefore, since the bonding wire 17 is reliably cut from the flexible substrate 13, it is possible to prevent the light emitting element 10 from being taken out and misused.

[Second Embodiment]
Next, a second embodiment according to the present invention will be described with reference to FIGS. In each embodiment described below, portions having the same configuration as those of the light source device 1 according to the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.
The light source device 30 according to the present embodiment is different from the first embodiment in the shape of the cover member 31.

  As shown in FIG. 6, a recess 32 is formed on the bottom surface 31 a of the cover member 31 that contacts the flexible substrate 13. The recess 32 is formed at the center in the thickness direction along the rectangular bottom surface 31 a of the cover member 31. The concave portion 32 is filled with an adhesive 33, and the flexible substrate 13 and the cover member 31 are bonded by the adhesive 33. Thereby, the protrusion part 33a of the adhesive agent 33 at the time of bonding the flexible substrate 13 and the cover member 31 decreases.

The light source device 30 according to the present embodiment can obtain the same effects as those of the light source device 1 of the first embodiment. Furthermore, in the light source device 30 of the present embodiment, since the adhesive 33 is filled in the recess 32 provided on the bottom surface 31a of the cover member 31, the protruding portion 33a of the adhesive 33 is reduced. Workability when mounted on other members is improved.
In addition, although the recessed part 32 was made into the structure currently formed in the center part of the plate | board thickness direction along the rectangular bottom face 31a of the cover member 31, it is the structure by which several circular or elliptical recessed parts were formed. Also good.

[Modification of Second Embodiment]
In the present embodiment shown in FIG. 6, the concave portion 32 is provided on the bottom surface 31 a of the cover member 31. However, as shown in FIG. 7, the bottom surface 36 a of the cover member 36 has an opening on the inner side surface 36 b side. Alternatively, the light source device 35 may be provided with a notch (concave portion) 37 to be formed.
In this configuration, the cover member 36 and the flexible substrate 13 are fixed to each other because the notch 37 formed on the inner surface 36b side of the bottom surface 36a that contacts the flexible substrate 13 of the cover member 36 is filled with the adhesive 38. When it is made, it becomes difficult to confirm the adhesive 38 from the appearance. That is, it is more preferable that the adhesive 38 is provided in a portion where the adhesive 38 is difficult to be confirmed from the appearance as compared with the case where the adhesive 38 is provided at a position that can be confirmed from the appearance such as the outer surface 36 c of the cover member 36. It is difficult to remove only 38. Therefore, in order to remove the adhesive 38 filled in the notch 37 of the cover member 36, for example, the glass 16 on the upper surface 36d of the cover member 36 must be removed, and the adhesive 38 must be removed from the opening 14f. This method is very difficult, and it is conceivable that the bonding wire 17 is cut when the adhesive 38 is removed from the opening 14f. Accordingly, it is possible to prevent the light emitting element 10 from being taken out and misused.

[Third Embodiment]
Next, a third embodiment according to the present invention will be described with reference to FIGS.
The light source device 40 according to the present embodiment is different from the first embodiment in the shape of the cover member 41.
As shown in FIG. 8, a substrate insertion hole 42 into which the flexible substrate 13 can be inserted is provided on one surface 41 a of the cover member 41. That is, in the first embodiment, the flexible substrate 13 is sandwiched between the base 11 and the cover member 41. However, in the present embodiment, as shown in FIG. The cover member 41 protrudes outward from the cavity 41 b through the substrate insertion hole 42.
The adhesive 43 is filled in the board insertion hole 42 as shown in FIG. Accordingly, the upper surface 13 c and the lower surface 13 d of the flexible substrate 13 are bonded to the cover member 41 via the adhesive 43. Further, in order to increase the adhesive force between the flexible substrate 13 and the cover member 41, an adhesive 43 is also provided on the outer side surface 41 c and the inner side surface 41 d of the cover member 41 so as to close the substrate insertion hole 42.
Further, the other surface other than the one surface 41a side of the cover member 41 is covered with the outer surface 41c and the inner surface of the cover member 41 so as to cover the contact surface between the bottom surface 41e of the cover member 41 and the flexible substrate 13 as in the first embodiment. An adhesive 43 is provided on the side surface 41d.

  In the light source device 40 according to the present embodiment, the same effects as those of the light source device 1 of the first embodiment can be obtained. Furthermore, in the light source device 40 of the present embodiment, the upper surface 13c and the lower surface 13d of the flexible substrate 13 in the substrate insertion hole 42 are bonded to the cover member 41 via the adhesive 43, so that the cover member 41 is removed. In this case, since the flexible substrate 13 is pulled together with the cover member 41, the bonding wire 17 can be surely cut.

[Fourth Embodiment]
Next, a fourth embodiment according to the present invention will be described with reference to FIGS.
The light source device 50 according to the present embodiment is different from the first embodiment in the shape of the cover member 51.
In the vicinity of the bottom surface 51a of the cover member 51, as shown in FIG. 10, a plurality of through holes 52 (three per surface in the illustrated example) penetrating from the outer surface 51b to the inner surface 51c are formed. As a method of bonding such a cover member 51 to the flexible substrate 13, for example, after the cover member 51 is placed at a predetermined position on the flexible substrate 13, the cover member 51 is inserted into the through hole 52 from the outer surface 51 b side. The adhesive 53 is poured through a thin injector or the like. Thus, as shown in FIG. 11, the inner surface 51 c and the through hole 52 of the cover member 51 are filled with the adhesive 53, and the entrance of the through hole 52 from the outer surface 51 b of the cover member 51 is adhesive. 53 is blocked.

  The light source device 50 according to the present embodiment can obtain the same effects as those of the light source device 1 of the first embodiment. Furthermore, in the light source device 50 of this embodiment, since the adhesive 53 can be filled from the through hole 52, the flexible substrate 13 and the cover member 51 can be bonded after the cover member 51 is aligned. it can. Therefore, it is possible to bond the cover member 51 to a predetermined position with high accuracy. Further, since the adhesive 53 can be injected into the inner side surface 51c through the through-hole 52 formed in the cover member 51, the inner side surface 51c of the cover member 51 and the flexible substrate 13 can be bonded. Accordingly, since the protruding portion of the adhesive 53 is reduced on the outer surface 51b side of the cover member 51, workability is improved.

[Fifth Embodiment]
Next, a fifth embodiment according to the present invention will be described with reference to FIG.
In the present embodiment, a projector 100 including the light source device 1 of the first embodiment will be described. In FIG. 12, the casing constituting the projector 100 is omitted for simplification.

The projector 100 includes a red laser light source (light emitting element) 10R that emits red light, green light, and blue light, a green laser light source (light emitting element) 10G, and a blue laser light source (light emitting element) 10B. The light source device 1 of one embodiment is used.
Further, the projector 100 is emitted from the liquid crystal light valves (light modulation devices) 104R, 104G, and 104B that modulate the laser light emitted from the laser light sources 10R, 10G, and 10B, and the liquid crystal light valves 104R, 104G, and 104B, respectively. A projection lens (projection device) 107 that magnifies and projects an image formed by a cross dichroic prism (color light synthesis means) 106 that synthesizes light and guides it to the projection lens 107 and the liquid crystal light valves 104R, 104G, and 104B. And.

  Further, in order to make the illuminance distribution of the laser light emitted from the laser light sources 10R, 10G, and 10B uniform, the projector 100 makes the uniformizing optical systems 102R, 102G downstream of the laser light sources 10R, 10G, and 10B. , 102B are provided, and the liquid crystal light valves 104R, 104G, 104B are illuminated by light having a uniform illuminance distribution. For example, the uniformizing optical systems 102R, 102G, and 102B are configured by, for example, a hologram 102a and a field lens 102b.

  The three color lights modulated by the respective liquid crystal light valves 104R, 104G, and 104B are incident on the cross dichroic prism 106. This prism is formed by bonding four right-angle prisms, and a dielectric multilayer film that reflects red light and a dielectric multilayer film that reflects blue light are arranged in a cross shape on the inner surface thereof. These dielectric multilayer films combine the three color lights to form light representing a color image. The synthesized light is projected onto the screen 110 by the projection lens 107, which is a projection optical system, and an enlarged image is displayed.

  The projector 100 of the present embodiment described above prevents the laser light sources 10R, 10G, and 10B from being misused because the bonding wire 17 is cut even when the cover member 14 is removed from each light source device 1. It becomes possible to do.

In the projector of this embodiment, the red, green, and blue laser light sources 10R, 10G, and 10B have been described using the light source device 1 of the first embodiment, but the second to fourth embodiments ( It is also possible to use the light source device 30, 35, 40, 50 of the modified example). At this time, it is possible to employ light source devices of different embodiments for the respective light source devices 1, and it is also possible to employ light source devices of the same embodiment.
The red, green, and blue laser light sources 10R, 10G, and 10B are configured to convert the light into wavelengths of red light, green light, and blue light using a wavelength conversion element and a wavelength selection element (resonator mirror). There may be.

Further, although a transmissive liquid crystal light valve is used as the light modulator, a light valve other than liquid crystal may be used, or a reflective light valve may be used. Examples of such a light valve include a reflective liquid crystal light valve and a digital micromirror device. The configuration of the projection optical system is appropriately changed depending on the type of light valve used.
The light source devices (including modifications) 1, 30, 35, 40, and 50 of the first to fourth embodiments are also applied to a scanning image display device. An example of such an image display device is shown in FIG. A projector (image display device) 200 illustrated in FIG. 13 includes a light source device 1 according to the first embodiment, a MEMS mirror (scanning unit) 202 that scans light emitted from the light source device 1 toward a screen 210, and a light source. A condensing lens 203 that condenses the light emitted from the apparatus 1 onto the MEMS mirror 202 is provided. The light emitted from the light source device 1 is guided to scan the screen 210 in the horizontal direction and the vertical direction by moving the MEMS mirror 202. In the case of displaying a color image, the plurality of emitters constituting the light emitting element 10 may be configured by a combination of emitters having red, green, and blue peak wavelengths.

[Sixth Embodiment]
Next, a configuration example of the monitor device 300 to which the light source device 1 according to the first embodiment is applied will be described. FIG. 14 is a schematic diagram showing an outline of the monitor device. The monitor device 300 includes a device main body 310 and an optical transmission unit 320. The apparatus main body 310 includes the light source device 1 of the first embodiment described above.

  The light transmission unit 320 includes two light guides 321 and 322 on the light sending side and the light receiving side. Each of the light guides 321 and 322 is a bundle of a large number of optical fibers, and can send laser light to a distant place. The light source device 1 is disposed on the incident side of the light guide 321 on the light transmission side, and the diffusion plate 323 is disposed on the emission side thereof. The laser light emitted from the light emitting element 10 of the light source device 1 is transmitted to the diffusion plate 323 provided at the tip of the light transmission unit 320 through the light guide 321 and is diffused by the diffusion plate 323 to irradiate the subject.

  An imaging lens 324 is also provided at the tip of the light transmission unit 320, and reflected light from the subject can be received by the imaging lens 324. The received reflected light travels through the light guide 322 on the receiving side and is sent to a camera 311 as an imaging means provided in the apparatus main body 310. As a result, an image based on the reflected light obtained by irradiating the subject with the laser light emitted from the light source device 1 can be captured by the camera 311.

According to the monitor device 300 configured as described above, it is possible to prevent the light emitting element 10 from being abused by removing the cover member 14 from the light source device 1.
In the present embodiment, the light source device 1 according to the first embodiment is used, but this may be replaced with the light source devices 30, 35, 40, and 50 according to other embodiments. Further, the light emitting element 10 may be configured to convert light into a predetermined wavelength by using a wavelength conversion element and a wavelength selection element (resonator mirror).

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, although a bonding wire is used as the wiring for connecting the light emitting element and the flexible substrate, the present invention is not limited to this. For example, by forming a fragile part on at least one of the light emitting element and the electrode on the flexible substrate and removing the cover member from the flexible substrate, light is emitted by the wiring that can break the fragile part of the electrode. What is necessary is just to connect an element and a flexible substrate.

It is a perspective view which shows the light source device which concerns on 1st Embodiment of this invention. It is principal part sectional drawing which shows the light source device which concerns on 1st Embodiment of this invention. It is a perspective view which shows the board | substrate of the light source device of FIG. It is a schematic diagram which shows a mode that the wiring of the light source device which concerns on 1st Embodiment of this invention was cut | disconnected. It is principal part sectional drawing which shows the modification of the light source device which concerns on 1st Embodiment of this invention. It is principal part sectional drawing which shows the light source device which concerns on 2nd Embodiment of this invention. It is principal part sectional drawing which shows the modification of the light source device which concerns on 2nd Embodiment of this invention. It is principal part sectional drawing which shows the light source device which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the light source device which concerns on 3rd Embodiment of this invention. It is principal part sectional drawing which shows the light source device which concerns on 4th Embodiment of this invention. It is a perspective view which shows the light source device which concerns on 4th Embodiment of this invention. It is a schematic block diagram which shows the projector which concerns on 5th Embodiment of this invention. It is a schematic block diagram which shows the modification of the projector which concerns on 5th Embodiment of this invention. It is a schematic block diagram which shows the monitor apparatus which concerns on 6th Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,30,35,40,50 ... Light source device, 10 ... Light emitting element, 11 ... Base (support member), 12, 33, 38, 43, 53 ... Adhesive (fixing member), 13 ... Flexible substrate (substrate) , 14, 31, 36, 41, 51 ... cover member, 17 ... bonding wire (wiring), 32 ... recess, 37 ... notch (recess), 42 ... substrate insertion hole, 52 ... through hole, 100 ... projector, 200 ... Projector (image display device), 300 ... Monitor device

Claims (10)

A light emitting element for emitting laser light;
A support member for supporting the light emitting element;
A substrate fixed to the support member and electrically connected to the light emitting element;
A wiring for electrically connecting the light emitting element and the substrate and supplying a current;
A cover member that is at least partially capable of transmitting light and covers the light emitting element fixed to the substrate;
A fixing member for fixing the substrate and the cover member;
The light source device, wherein a fixing force between the substrate and the cover member by the fixing member is larger than a fixing force between the support member and the substrate.   The light source device according to claim 1, wherein the fixing member is provided on a surface or an inner surface that contacts the substrate of the cover member.   The light source device according to claim 1, wherein the fixing member is an adhesive.   4. The light source device according to claim 1, wherein the wiring is a bonding wire, and the light emitting element and the substrate are connected only by the bonding wire. 5.   The light source device according to claim 3, wherein a concave portion is formed on a surface of the cover member that contacts the substrate, and the concave portion is filled with the adhesive.   4. The light source device according to claim 3, wherein a concave portion that is open on an inner surface side of a surface that contacts the substrate of the cover member is formed, and the concave portion is filled with the adhesive.   The substrate insertion hole into which the substrate can be inserted is formed in a part of the cover member, and the substrate is inserted into the substrate insertion hole and filled with the adhesive. The light source device described.   The light source device according to claim 3, wherein the cover member is formed with a through hole penetrating from the outer surface to the inner surface, and the adhesive is filled in the through hole. The light source device according to any one of claims 1 to 8,
A light modulation device that modulates light emitted from the light source device in accordance with an image signal;
A projector comprising: a projection device that projects an image formed by the light modulation device. The light source device according to any one of claims 1 to 8,
A monitor device comprising: imaging means for imaging a subject by light emitted from the light source device.

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