CN107740995A - A kind of LED total reflection lens, LED light conductors and automobile lamp - Google Patents

A kind of LED total reflection lens, LED light conductors and automobile lamp Download PDF

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Publication number
CN107740995A
CN107740995A CN201711015344.XA CN201711015344A CN107740995A CN 107740995 A CN107740995 A CN 107740995A CN 201711015344 A CN201711015344 A CN 201711015344A CN 107740995 A CN107740995 A CN 107740995A
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CN
China
Prior art keywords
led
light
total reflection
lens
plane
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711015344.XA
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Chinese (zh)
Inventor
牛磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HASCO Vision Technology Co Ltd
Original Assignee
Shanghai Koito Automotive Lamp Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Koito Automotive Lamp Co Ltd filed Critical Shanghai Koito Automotive Lamp Co Ltd
Priority to CN201711015344.XA priority Critical patent/CN107740995A/en
Publication of CN107740995A publication Critical patent/CN107740995A/en
Priority to PCT/CN2018/102722 priority patent/WO2019080634A1/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/04Refractors for light sources of lens shape
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The present invention relates to a kind of LED total reflection lens, LED light conductors and automobile lamp, the present invention is integral type polyhedral structure, agent structure is a cuboid, provided with incidence surface, exiting surface, taper fully reflecting surface, combine fully reflecting surface, the fully reflecting surface and air-lens of chamfering, air-lens are integral type, the structure of up/down perforation, air-lens are divided into two planes of refraction up and down, the lower plane of refraction is curved surface or plane, it is plane or curved surface in the middle part of the upper plane of refraction, the both sides of upper plane of refraction are the dentalation for being uniformly distributed on both sides of the middle, the dentalation is total reflection tooth, the flank of tooth for being totally reflected tooth is fully reflecting surface.LED total reflection lens are arranged to polyhedral structure by the present invention, pass through the change of different faces type, reallocation is collected to light, uniform improvement of visual effect can be realized, capacity usage ratio is high, and the problem of LED light source is few using number, and it is poor to solve the uniformity of distribution of the existing light guide to light, and capacity usage ratio is low.

Description

A kind of LED total reflection lens, LED light conductors and automobile lamp
Technical field
The present invention relates to LED car lamp technical field, and in particular to a kind of LED total reflection lens, LED light conductors and Automobile Lamp.
Background technology
LED life is long, energy consumption is low and production technology process is increasingly ripe, can mass produce supply, is shone at present in automobile It is widely used in bright and decoration, highway lighting, projector and indoor and outdoor lighting decoration.Due to most of conventional LED hair Light characteristic is symmetrical Lambertian radiation, it is impossible to meets the optical requirement of various occasions.In order to meet the light efficiency of various occasions and luminous intensity distribution It is required that the performance of system is improved, it is necessary to LED be accurately controlled the secondary optical design of light distribution, rational distribution The luminous energy that LED chip is sent.
It is general that luminous intensity distribution is carried out using the reflectors such as reflecting surface or reflector of aluminizing to LED secondary optical designs, by anti- Emitter can not effectively and uniformly distribute luminous energy, and the light intensity of LED light direction of principal axis is big, and surrounding light intensity gradually reduces.Automobile signal light, Illuminator and ornament lamp, it is desirable to uniformly light-emitting can be realized, while to meet certain light distribution requirements.Linear effect is realized at present The scheme of fruit has:
Light guide linear light sorurce, LED light source is located at one end of photoconductive tube, and after light enters photoconductive tube, total reflection internally passes The other end until light guide is broadcast, in order to obtain linear illumination effect, adds light guide tooth or micro-structural at the back side of light guide exiting surface Deng optical texture, the effect of linear light sorurce is realized by total reflection.The efficiency of light energy utilization of the light guide scheme is low, and typically only 25% Left and right, in order to reach big light intensity requirement, it is desirable to which single LEDs power is very big, the heat dissipation design requirement to whole optical system Very high, longer light guide, mould is larger, costly, and design and difficulty of processing are very big, and micro-structural and light guide tooth to The control ability of light is poor.
Another scheme is the light bar scheme of the closeer distribution of plurality of LEDs, and plurality of LEDs direct projection passes through lens, passes through phase Adjacent LED light intersects, and realizes the illumination effect of continuous uniform.This design is simple, easy for installation, but to obtain more equal Even linear light sorurce, the LED numbers that longer linear light sorurce needs are very more, because LED numbers are more, can increase considerably and are The cost of system.
Also a kind of scheme is to use traditional total reflection (TRI) concentrator, and plurality of LEDs and multiple TIR lens coordinate shape Linear illumination effect, luminous intensity distribution again is collimated to LED light line by TRI, this TRI lens are generally the circle around LED light axle Rotary body, it is square occasion for some light-emitting areas or light distribution requirements, then needs to be cut rotary body, so often Capacity usage ratio can be caused to decline, and also use more LED numbers.
Application number 201720009148.0 discloses a kind of LED total reflection lens and LED line light source, and the total reflection lens are A kind of polyhedral structure, there is the fully reflecting surface of multiple different faces types, refraction hole and multiple reflection holes are offered in lenticular body, Wherein reflection hole is distributed in the both sides in refraction hole, is reallocated by collection of a variety of different faces types to light, realizes the equal of light Even distribution.But multiple reflection holes that the LED total reflection lens are set block before and after beam projecting direction, cause energy sharp Declined with rate.
The content of the invention
It is an object of the invention to provide LED is complete by a kind of LED total reflection lens, LED light conductors and automobile lamp, the present invention Mirror lens is arranged to polyhedral structure, and by the change of different faces type, reallocation is collected to light, can realize uniformly Improvement of visual effect, capacity usage ratio are high, and LED light source is few using number, solve the uniformity of distribution of the existing light guide to light compared with Difference, and the problem of capacity usage ratio is low.
To achieve the above object, the solution of the present invention is:A kind of LED total reflection lens, described LED total reflection lens are The polyhedral structure of integral type, the main part of the polyhedral structure is a cuboid, and the front portion of the cuboid is light Line incidence end, rear portion are beam projecting end, and the top surface of the light incidence end sets incidence surface, and the top of the incidence surface is used for LED light source is placed, the end set of the light incidence end has combination fully reflecting surface, and the combination fully reflecting surface is by setting angle Two inclined-planes 180 degree rotated centered on LED light source formed, two right-angle positions of the light incidence end of the cuboid install Chamfering is put, the inclined-plane of the chamfering is fully reflecting surface, and the face position of the LED light source light-emitting area is provided with taper total reflection Face, is provided with air-lens on the cuboid, close to light incidence end, and the air-lens are integral type, up/down perforation Hollow-core construction, it is curved surface or plane that the air-lens, which are divided into two planes of refraction, the lower plane of refraction up and down, the upper refraction Middle face is plane or curved surface, and the both sides of the upper plane of refraction are the dentalation for being uniformly distributed on both sides of the middle, the dentation Structure is total reflection tooth, and the flank of tooth of the total reflection tooth is fully reflecting surface.
Further, according to LED total reflection lens of the present invention, the lower plane of refraction of the air-lens is convex The arc surface risen, the middle part of upper plane of refraction is that the both sides of the recessed arc surface are equally distributed to recessed arc surface It is totally reflected tooth..
Further, according to LED total reflection lens of the present invention, the incidence surface is plane or concave surface or convex surface.
Further, it is that 360 are rotated centered on LED according to LED total reflection lens of the present invention, the incidence surface ゜ is symmetrical.
Further, according to LED total reflection lens of the present invention, the end face at the beam projecting end is exiting surface, The exiting surface is plane or curved surface.
Further, according to LED total reflection lens of the present invention, decorative pattern or micro- knot are provided with the exiting surface Structure.
Further, according to LED total reflection lens of the present invention, the material of the polyhedral structure is glass or PC Or PMMA.
Present invention also offers a kind of LED light conductors, the LED light conductors include at least one LED luminescence units, each LED total reflection lens of the LED luminescence units described in including a LEDs light source and one, the LED light source are arranged on LED and are all-trans Penetrate the top of the incidence surface of lens, the LED light-emitting areas are towards the incidence surface.
Present invention also offers a kind of automobile lamp using the LED light conductors.
The beneficial effect that the present invention reaches:LED light line is carried out repeatedly to collect, collimate or expand by the combination of different faces type Dissipate, reallocation, LED light line can be evenly distributed to the uniform linear visual effect of realization.
This lens can both realize that light collimation outgoing was used as a kind of LED collimation device, again by the change of optical texture It can realize that functional light distribution requirement such as automobile lamp is realized in distribution to LED light on demand by force.
Lens body of the present invention is rational in infrastructure, and refraction total reflection structure, which can freely change, realizes freely dividing for LED light line Match somebody with somebody, that realizes higher brightness uniformly lights effect;
The change that total reflection lens of the present invention are totally reflected structure by reflecting coordinates, and can realize the collimation of LED light line, again LED light line can be spread on demand;
Processing cost and assembly difficulty are reduced, capacity usage ratio is higher;
This total reflection lens structure, realization is longer linear luminous, using less LED numbers, significantly reduces cost.
Brief description of the drawings
Fig. 1 is the structural representation of lens of the present invention;
Fig. 2 is the top view of lens of the present invention;
Fig. 3 is the A-A profiles and light propagation principle schematic diagram of lens top view of the present invention;
Fig. 4 is the front view of lens of the present invention;
Fig. 5 is the B-B profiles and light propagation principle schematic diagram of lens front view of the present invention;
Fig. 6 is the compound lens light conductor that lens of the present invention are used for automobile lamp.
In figure, 1, LED light source;2, incidence surface;3, taper fully reflecting surface;4, combine fully reflecting surface;5-1, air-lens Lower plane of refraction;5-2, the upper plane of refraction of air-lens;6-1~6-4, the total reflection tooth of air-lens reflecting part;7-1 and 7-2, fall The fully reflecting surface at angle;8, exiting surface.
Embodiment
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings.
LED total reflection lens:
As shown in figure 1, the LED total reflection lens of the present invention are the polyhedral structure of integral type, the master of the polyhedral structure Body portion is a cuboid, and the front portion of the cuboid is light incidence end, and rear portion is beam projecting end, and the light is incident The top surface at end sets incidence surface, and the top of the incidence surface is used to place LED light source, and incidence surface is that 360 are rotated centered on LED ゜ is symmetrical, and incidence surface is plane, or concave surface or convex surface.The end face at the beam projecting end is exiting surface, on exiting surface Decorative pattern or micro-structural are provided with, matches somebody with somebody light distribution to reach control emergent light.
Such as Fig. 3 and Fig. 4, the face position of the LED light source light-emitting area is provided with taper fully reflecting surface, taper total reflection The light that face to enter lens by incidence surface forms total reflection in this lens, passes through incidence surface and taper fully reflecting surface Face type coordinates, and realizes the light of LED light source outgoing after the total reflection of taper fully reflecting surface, light is forward or backward in lens Collimation is propagated.
The end set of light incidence end has a combination fully reflecting surface, the combination fully reflecting surface by two of setting angle tiltedly Face is rotated 180 degree centered on LED light source and formed, and external structure is a similar spindle structure.By taper fully reflecting surface Light after total reflection, half light are directly propagated in lens of the present invention, and second half light is by the two of combination fully reflecting surface After secondary total reflection, change the direction of propagation and continue to propagate in lens, by incidence surface, taper fully reflecting surface and combination fully reflecting surface Light distribution afterwards is centered on LED, and 180 ゜ are equally distributed.The propagation of light, as shown in Figure 3 and Figure 5,
Two square positions of the light incidence end of the cuboid set chamfering, and the inclined-plane of the chamfering is total reflection Face, propagated after the light of the fully reflecting surface can be totally reflected in lens.
Air-lens are provided with the cuboid, close to light incidence end, the air-lens are integral type, up and down The hollow-core construction of insertion, it is curved surface or plane that the air-lens, which are divided into two planes of refraction, the lower plane of refraction up and down, it is described on It is plane or curved surface in the middle part of plane of refraction, the both sides of the upper plane of refraction are dentalation, and the dentalation is to be totally reflected tooth, institute The flank of tooth for stating total reflection tooth is fully reflecting surface.
Air-lens structure collects the LED light line by incidence surface, taper fully reflecting surface and combination fully reflecting surface again Reallocation, the light that air-lens are collected, first pass around the cooperation control light that lower plane of refraction and upper plane of refraction reflect to light The direction of propagation, a part of light after refraction collimate propagation, after some light is refracted, directive in facted lens Tooth is totally reflected, the collection of tooth is totally reflected by air-lens, forms total reflection, is propagated in the facted lens of the present invention.It is surplus Under some light then fully reflecting surface that inclined-plane Jing Guo chamfering is formed collection, be totally reflected.Air-lens of the present invention Reflecting part has been provided with 4 total reflection teeth, and in other embodiments, being totally reflected the number of tooth can increase or reduce.Light Propagation refer to such as Fig. 5.
Polyhedral material of main part of the present invention is the transparent material such as glass or PC or PMMA.
In use, by LED light-emitting area towards the incidence surface of LED total reflection lens, and keep certain distance, LED with it Incidence surface described in most of light directive of injection, successively by the incidence surface and taper fully reflecting surface, by incidence surface and The light of LED outgoing is collected in the cooperation of taper fully reflecting surface so that the uniform light of LED outgoing projects taper fully reflecting surface Inner surface, then the total reflection by taper fully reflecting surface, formed and propagate, radiated centered on LED light source to surrounding along the horizontal plane Light.
Taper fully reflecting surface collects the almost all light that incidence surface comes in, and these light are totally reflected, entirely Light after reflection is propagated along the horizontal plane, and the direction of propagation is that 180 degree direction collimates propagation in lens forward or backward, wherein, Half light of the reflection light in 180 degree angular region backward is directly propagated in the polyhedron, and reflection light is located at After the reflection of two fully reflecting surfaces of second half light priority by combining fully reflecting surface in 180 degree angular region forward, into For the reflection light in the 180 degree angular region of directive rear.Therefore, after total reflection of the combination fully reflecting surface to wherein half, Whole light all turn into the light of horizontal sheaf rear 180 degree angular region, and are uniformly distributed in 180 degree angular region.Light The direction of propagation is referring to Fig. 3.
The light of horizontal sheaf rear 180 degree angular region divides two parts to collect, and the light of a part of angle is by air-lens Collect, the lower plane of refraction of directive air-lens first, by the refraction of plane of refraction under air-lens, in air inlet lens, so Afterwards after the refraction of plane of refraction on air-lens, a part of light collimation is propagated, and reaches exiting surface, another part light directive The flank of tooth of tooth is totally reflected, is totally reflected, then collimates or is propagated at a certain angle in polyhedral structure, final directive light extraction Face, uniform.
In the light of horizontal sheaf rear 180 degree angular region, the light of another part angle is made up of complete chamfering inclined-plane Reflecting surface is collected.Being totally reflected the flank of tooth of tooth and the inclined-plane of chamfering can be totally reflected collected light, and reflected light Line direct projection backward.The direction of propagation of light is referring to Fig. 5.
Lens of the present invention carry out repeatedly collecting, collimate or spreading, reallocate by the combination of different faces type to LED light line, LED light line can be evenly distributed to the uniform linear visual effect of realization.And the row of the dentalation of air-lens of the present invention Cloth, do not blocked mutually on beam projecting direction, improve capacity usage ratio.
LED light conductors:
Such as Fig. 6, LED light conductors of the invention include at least one LED luminescence units, and each LED luminescence units include One LEDs light source and an above-mentioned LED total reflection lens, the LED light source are arranged on the incidence surface of LED total reflection lens Top, the light-emitting areas of the LED light emitting sources is towards the incidence surface.
The present invention easily realizes 60mm or so length using single LEDs fit lens and brightness meets the uniform hair of requirement Light effect.
LED car lamp:
Present invention also offers a kind of LED car lamp, the LED car lamp includes above-mentioned LED light conductors.
The total reflection lens of the present invention can both realize light collimation outgoing as a kind of by the change of optical texture It LED collimation device, can realize that LED light is distributed by force on demand again, realize functional light distribution requirement such as automobile lamp.

Claims (9)

1. a kind of LED total reflection lens, described LED total reflection lens are the polyhedral structure of integral type, the polyhedron knot The main part of structure is a cuboid, and the front portion of the cuboid is light incidence end, and rear portion is beam projecting end, the light The top surface of line incidence end sets incidence surface, and the top of the incidence surface is used to place LED light source, the end of the light incidence end Combination fully reflecting surface is provided with, the combination fully reflecting surface rotates 180 by two inclined-planes of setting angle centered on LED light source Degree is formed, and two square positions of the light incidence end of the cuboid set chamfering, and the inclined-plane of the chamfering is fully reflecting surface, The face position of the LED light source light-emitting area is provided with taper fully reflecting surface, it is characterised in that:
Air-lens are provided with the cuboid, close to light incidence end, the air-lens are integral type, up/down perforation Structure, it is curved surface or plane that the air-lens, which are divided into two planes of refraction, the lower plane of refraction up and down, in the upper plane of refraction Portion is plane or curved surface, and the both sides of the upper plane of refraction are the dentalation for being uniformly distributed on both sides of the middle, the dentalation To be totally reflected tooth, the flank of tooth of the total reflection tooth is fully reflecting surface.
2. LED total reflection lens according to claim 1, it is characterised in that the lower plane of refraction of the air-lens be to Upper raised arc surface, the middle part of upper plane of refraction is that the both sides of the recessed arc surface are uniform point to recessed arc surface The total reflection tooth of cloth.
3. LED total reflection lens according to claim 1, it is characterised in that the incidence surface is plane or concave surface or convex Face.
4. LED total reflection lens according to claim 3, it is characterised in that the incidence surface is rotated centered on LED 360 ゜ are symmetrical.
5. LED total reflection lens according to claim 1, it is characterised in that the end face at the beam projecting end is light extraction Face, the exiting surface are plane or curved surface.
6. LED total reflection lens according to claim 5, it is characterised in that be provided with the exiting surface decorative pattern or Micro-structural.
7. LED total reflection lens according to claim 1, it is characterised in that the material of the polyhedral structure is glass Or PC or PMMA.
A kind of 8. LED light conductors, it is characterised in that:The LED light conductors include at least one LED luminescence units, each LED hairs Light unit includes a LEDs light source and the LED total reflection lens as described in claim any one of 1-7, the LED light source It is arranged on the top of the incidence surface of LED total reflection lens, the LED light-emitting areas are towards the incidence surface.
A kind of 9. automobile lamp using LED light conductors as claimed in claim 8.
CN201711015344.XA 2017-10-25 2017-10-25 A kind of LED total reflection lens, LED light conductors and automobile lamp Pending CN107740995A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201711015344.XA CN107740995A (en) 2017-10-25 2017-10-25 A kind of LED total reflection lens, LED light conductors and automobile lamp
PCT/CN2018/102722 WO2019080634A1 (en) 2017-10-25 2018-08-28 Led total reflection lens, led light guide body, and automobile lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711015344.XA CN107740995A (en) 2017-10-25 2017-10-25 A kind of LED total reflection lens, LED light conductors and automobile lamp

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CN107740995A true CN107740995A (en) 2018-02-27

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN108732823A (en) * 2018-08-03 2018-11-02 广东烨嘉光电科技股份有限公司 A kind of back light system of head-up display device
CN109027955A (en) * 2018-09-10 2018-12-18 常熟理工学院 A kind of intelligent automobile headlamp matrix form lighting unit
CN109140377A (en) * 2018-08-03 2019-01-04 常熟理工学院 A kind of car headlamp unit
CN109519870A (en) * 2018-12-28 2019-03-26 马瑞利汽车零部件(芜湖)有限公司 Realize the optical system of uniformly light-emitting
WO2019080634A1 (en) * 2017-10-25 2019-05-02 华域视觉科技(上海)有限公司 Led total reflection lens, led light guide body, and automobile lamp
CN110673253A (en) * 2019-09-17 2020-01-10 苏州天禄光科技股份有限公司 Side light type hexagonal light guide plate
CN110906279A (en) * 2019-12-26 2020-03-24 珠海市唯能车灯实业有限公司 Lens capable of uniformly distributing light
WO2020244087A1 (en) * 2019-06-05 2020-12-10 华域视觉科技(上海)有限公司 Vehicle lamp optical element, vehicle lamp module, vehicle headlamp, and vehicle

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WO2019080634A1 (en) * 2017-10-25 2019-05-02 华域视觉科技(上海)有限公司 Led total reflection lens, led light guide body, and automobile lamp
CN109140377A (en) * 2018-08-03 2019-01-04 常熟理工学院 A kind of car headlamp unit
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WO2020244087A1 (en) * 2019-06-05 2020-12-10 华域视觉科技(上海)有限公司 Vehicle lamp optical element, vehicle lamp module, vehicle headlamp, and vehicle
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CN110673253B (en) * 2019-09-17 2020-08-04 苏州天禄光科技股份有限公司 Side light type hexagonal light guide plate
CN110673253A (en) * 2019-09-17 2020-01-10 苏州天禄光科技股份有限公司 Side light type hexagonal light guide plate
CN110906279A (en) * 2019-12-26 2020-03-24 珠海市唯能车灯实业有限公司 Lens capable of uniformly distributing light

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Application publication date: 20180227

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