TW201520672A - Color wheel module - Google Patents

Abstract

A color wheel module applied to a projector includes a color wheel unit and a reflective layer. The color wheel includes a filter and a driver. The driver is connected to the filter to drive rotation of the filter. The reflective layer is painted on an outer surface of the driver, and the reflective layer is adapted to reflect a signal within a predetermined wavelength range.

Description

Color wheel module

The invention provides a color wheel module, in particular to a color wheel module applied to a projector.

Conventional projectors use a color wheel to resolve white light sources and perform separation and processing of different colors. The color wheel filter rotates at a high speed, and the color wheel needs to correctly determine the rotation speed and angle of the filter to stably generate monochromatic light of different colors. The conventional projector manually attaches the Time Index Mark to the color wheel housing, and uses the detector to sense the position of the time index label to know the rotation speed and angle of the color wheel and the filter. However, with the advancement of technology, the quality of the film and the rotation speed of the color wheel will be synchronously improved. The time index label is easily separated from the color wheel housing at high speed rotation, so the projector cannot correctly determine the rotation speed and angle of the filter, which will produce color. The disadvantage of partial or color distortion.

The present invention provides a color wheel module that is applied to a projector and has a better attaching force to solve the above problems.

The patent application scope of the present invention discloses a color wheel module applied to a projector, which comprises a color wheel unit and a reflective layer. The color wheel unit includes a filter plate and a driving unit. The driving unit is connected to the filter plate to drive the filter plate to rotate. The reflective layer is applied to the outer surface of the drive unit. The reflective layer can reflect a signal of a predetermined wavelength range.

The patent application scope of the present invention further discloses a color wheel module applied to a projector, A color wheel unit and a reflective layer are included. The color wheel unit includes a filter plate and a driving unit. The driving unit is connected to the filter plate to drive the filter plate to rotate. One of the housings of the drive unit has a carrier. The reflective layer is fitted to the carrying portion. The reflective layer can reflect a signal of a predetermined wavelength range.

The patent application scope of the present invention further discloses a color wheel module applied to a projector, which comprises a color wheel unit and a light detector. The color wheel unit includes a filter plate and a driving unit. The filter plate comprises a plurality of filter units, each filter unit having a different allowable band. The driving unit is connected to the filter plate to drive the filter plate to rotate. The photodetector is located next to the color wheel unit and is directed to the filter. The sensing band of the photodetector corresponds to a permissible band of one of the filter units of the filter.

The first embodiment and the second embodiment of the present invention use a coating and fitting manner to dispose the reflective layer on the driving unit to prevent the reflective layer from being separated from the driving unit under high-speed rotation; the third embodiment discards the application of the reflective layer, A light detector whose sensing band corresponds to a specific color filter unit is used to read the transmitted light passing through the filter. Compared with the prior art that the reflective layer is adhered to the driving unit manually, the invention can effectively improve the disadvantage that the adhesive of the conventional reflective layer is easy to fall off, and improve the reliability of use of the color wheel module.

10, 30, 50‧‧‧ color wheel module

12, 32, 52‧‧‧ color wheel unit

14, 34‧‧‧reflective layer

16, 36, 56‧‧‧ filter plates

18, 38, 58‧‧‧ drive units

20, 40‧‧‧ Signal Transceiver

381‧‧‧Shell

383‧‧‧ Carrying Department

54‧‧‧Photodetector

60‧‧‧ Filter unit

62‧‧‧Light source

R‧‧‧Red Filter Unit

G‧‧‧Green Filter Unit

B‧‧‧Blue Filter Unit

C‧‧‧Blue Green Filter Unit

Y‧‧‧Light yellow filter unit

W‧‧‧Transparent filter unit

1 and 2 are respectively schematic views of the color wheel module of the first embodiment of the present invention at different viewing angles.

3 is a schematic view of a color wheel module according to a second embodiment of the present invention.

4 and 5 are respectively schematic views of the color wheel module of the third embodiment of the present invention at different viewing angles.

Please refer to FIG. 1 and FIG. 2 , and FIG. 1 and FIG. 2 are respectively a first embodiment of the present invention. For example, the color wheel module 10 is schematic at different viewing angles. A color wheel module 10 is applied to the projector to perform separation and processing of different colors. The color wheel module 10 includes a color wheel unit 12 and a reflective layer 14. The color wheel unit 12 is composed of a filter plate 16 and a drive unit 18. The filter plate 16 may be a basic three-color wheel technology containing red (R), green (G), and blue (B), or may be transparent (W), light yellow (Y), and blue-green on the basis of the three primary colors. C) Six-color wheel technology such as intermediate transition color is not limited to this. The driving unit 18 can be a rotary motor connected to the filter plate 16 to drive the high speed rotation of the filter plate 16. The reflective layer 14 can reflect the optical signal in a predetermined wavelength range for use as a time index label of the color wheel module 10. The reflective layer 14 is coated on the outer surface of the drive unit 18.

As shown in FIGS. 1 and 2, the color wheel module 10 further includes a signal transceiver 20 located beside the color wheel unit 12. The detection end of the signal transceiver 20 is directed to the drive unit 18. The signal transceiver 20 can generate a light wave signal or a sound wave signal. In general, the color coefficient of the outer surface of the driving unit 18 is different from the color coefficient of the reflective layer 14, and the wavelength range of the first signal output by the signal transceiver 20 is within a predetermined wavelength range in which the reflective layer 14 can react. Therefore, when the filter board 16 rotates, the signal transceiver 20 continues to emit the first signal, and the first signal is irradiated to the outer surface of the driving unit 18 without being reflected, and the first signal is irradiated to the reflective layer 14 to be reflected to generate a corresponding number. Second signal. The direction of travel of the second signal is substantially opposite to the direction of travel of the first signal. After receiving the second signal, the signal transceiver 20 can determine the number of rotations and the position of rotation of the color wheel unit 12 to know the filter. The rotational speed and rotation angle of the light plate 16.

In the first embodiment, the reflective layer 14 is selected from a specific material and applied to the outer surface of the drive unit 18 by paint or printing. The predetermined wavelength range of the reflective layer 14 can be designed as an infrared light band, a visible light band, an ultraviolet band, etc., and the application end depends on actual needs, and will not be separately described herein. When the reflective layer 14 is in a coatable state, the bonding strength of the reflective layer 14 to the driving unit 18 can be increased by the viscosity of the reflective layer 14. In addition, the volume of the coatable reflective layer 14 is generally small, only a thin layer, and is not easily removed by the wind resistance or gravity effect when the drive unit 18 rotates at a high speed. Therefore, the color wheel module 10 of the present invention has better reliability of use.

Please refer to FIG. 3, which is a schematic diagram of a color wheel module 30 according to a second embodiment of the present invention. The color wheel module 30 includes a color wheel unit 32 and a reflective layer 34. The color wheel unit 32 includes a filter plate 36 and a drive unit 38. The composition of the filter plate 36 is similar to that of the filter plate 16 of the first embodiment, and the description thereof will not be repeated here. The driving unit 38 is connected to the filter plate 36 to drive the filter plate 36 to rotate. The driving unit 38 includes a housing 381 and a carrying portion 383 that can be formed at a specific position of the housing 381 protrudingly or concavely. The reflective layer 34 is a thin film element or a bulk element and is fitted to the carrier portion 383. The reflective layer 34 can be used to reflect optical signals in a predetermined wavelength range.

The color wheel module 30 further includes a signal transceiver 40 located adjacent to the color wheel unit 32 and directed to the drive unit 38. The position and function of the signal transceiver 40 are similar to those of the signal transceiver 20 of the first embodiment, and thus the description thereof will not be repeated. The second embodiment differs from the first embodiment in that the reflective layer 34 can be directly integrated with the drive unit 38 when the color wheel unit 32 is manufactured. For example, the reflective layer 34 may be embedded in the recessed structure (the carrier portion 383) of the housing 381; or the reflective layer 34 may be integrally formed on the protruding or recessed structure (the carrier portion 383) of the housing 381 in the casting stage. The combination of the reflective layer 34 and the drive unit 38 in a fitting manner can greatly increase the structural strength thereof. The combination of the reflective layer 34 and the carrying portion 383 may not be limited to the foregoing embodiment, depending on the design requirements.

Please refer to FIG. 4 and FIG. 5 . FIG. 4 and FIG. 5 are respectively schematic diagrams of the color wheel module 50 according to the third embodiment of the present invention at different viewing angles. The color wheel module 50 includes a color wheel unit 52 and a light detector 54. The color wheel unit 52 includes a filter plate 56 and a drive unit 58. The driving unit 58 is connected to the filter plate 56 to drive the rotation of the filter plate 56. The filter plate 56 includes a plurality of filter units 60, each of which has a different allowable band due to color differences, as described in the first embodiment. The photodetector 54 is located next to the color wheel unit 52 and is directed toward the filter plate 56. The sensing band of the photodetector 54 is limited to the allowable band corresponding to one of the filter units 60 of the filter plate 56. Color wheel module The light source 62 further includes a light source 62 disposed on one side of the color wheel unit 52 with respect to the light detector 54.

As shown in FIG. 5, the light source 62 and the photodetector 54 are disposed on opposite sides of the filter 56. The optical signal output by the light source 62 needs to pass through the filter 56 to be detected and received by the photodetector 54. In general, the light source 62 can be a white light source, meaning that the light signal output by the light source 62 contains different colors in various bands. The position of the photodetector 54 is fixed. If the photodetector 54 is an infrared photodetector, the photodetector 54 can receive the penetration from the light source 62 only when the filter 56 is rotated to the angle at which the red filter unit 60 is aligned with the photodetector 54. The optical signal (the red signal passing through the filter 56); when the other color filter unit 60 of the filter 56 is aligned with the photodetector 54, the optical signal penetrating the filter 56 does not conform to the sense of the photodetector 54. The photodetector 54 has no effect on the measurement band. In this way, the photodetector 54 can thereby determine the position of the specific color filter unit 60, thereby knowing the rotation speed and the rotation angle of the filter plate 56.

In summary, the first embodiment and the second embodiment of the present invention use a coating and fitting manner to dispose the reflective layer on the driving unit to prevent the reflective layer from being separated from the driving unit under high-speed rotation; In an embodiment, the application of the reflective layer is discarded, and a light detector whose sensing band corresponds to a specific color (specific allowable band) filter unit is used to read the transmitted light passing through the filter. Compared with the prior art that the reflective layer is manually adhered to the driving unit, the invention can effectively improve the disadvantage that the adhesive of the conventional reflective layer is easy to fall off, and improve the reliability of use of the color wheel module.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

10‧‧‧Color wheel module

12‧‧‧Color wheel unit

14‧‧‧reflective layer

16‧‧‧Filter

18‧‧‧ drive unit

20‧‧‧ Signal Transceiver

Claims (9)

A color wheel module for use in a projector, comprising: a color wheel unit comprising: a filter plate; and a driving unit connected to the filter plate to drive the filter plate to rotate; and a reflective layer coated on the The outer surface of the driving unit, the reflective layer can reflect one of two predetermined wavelength ranges. The color wheel module of claim 1, further comprising: a signal transceiver located beside the color wheel unit and directed to the driving unit, the signal transceiver outputting a first signal and receiving the first signal via A second signal generated by the reflective layer. The color wheel module of claim 1, wherein the reflective layer is applied to the outer surface of the drive unit by paint or printing. A color wheel module for use in a projector, comprising: a color wheel unit comprising: a filter plate; and a driving unit connected to the filter plate to drive the filter plate to rotate, one of the driving unit housings has a housing a carrying portion; and a reflective layer embedded in the carrying portion, the reflective layer reflecting a signal of a predetermined wavelength range. The color wheel module of claim 4, further comprising: a signal transceiver located beside the color wheel unit and directed to the driving unit, the signal transceiver outputting a first signal and receiving the first signal via A second signal generated by the reflective layer. The color wheel module of claim 4, wherein the carrier portion protrudes or is recessed in the housing. The color wheel module of claim 4, wherein the reflective layer is integrally formed in the housing. A color wheel module for use in a projector, comprising: a color wheel unit, comprising: a filter plate, the filter plate comprises a plurality of filter units, each filter unit has a different allowable band; and a driving unit, Connecting the filter plate to drive the filter plate to rotate; and a photodetector located beside the color wheel unit and directed to the filter plate, the sensing band of the photodetector corresponding to one of the filter units of the filter plate Allowable band. The color wheel module of claim 8, further comprising: a light source disposed on a side of the color wheel unit opposite to the light detector, the light detector receiving the light source output and penetrating the filter The optical signal of the light board.