CN105465717A - LED (light-emitting diode) automotive headlamp - Google Patents

LED (light-emitting diode) automotive headlamp Download PDF

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Publication number
CN105465717A
CN105465717A CN201511024421.9A CN201511024421A CN105465717A CN 105465717 A CN105465717 A CN 105465717A CN 201511024421 A CN201511024421 A CN 201511024421A CN 105465717 A CN105465717 A CN 105465717A
Authority
CN
China
Prior art keywords
optical collector
led
light source
taper optical
led light
Prior art date
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
CN201511024421.9A
Other languages
Chinese (zh)
Inventor
廖汉忠
马建设
丁航飞
柳立群
杨涛
苏萍
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.)
Shenzhen Huayao Vehicle Lamp Technology Co Ltd
Shenzhen Graduate School Tsinghua University
Original Assignee
Shenzhen Huayao Vehicle Lamp Technology Co Ltd
Shenzhen Graduate School Tsinghua University
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 Shenzhen Huayao Vehicle Lamp Technology Co Ltd, Shenzhen Graduate School Tsinghua University filed Critical Shenzhen Huayao Vehicle Lamp Technology Co Ltd
Priority to CN201511024421.9A priority Critical patent/CN105465717A/en
Publication of CN105465717A publication Critical patent/CN105465717A/en
Priority to PCT/CN2016/106830 priority patent/WO2017114027A1/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/323—Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Abstract

The invention provides an LED (light-emitting diode) automotive headlamp which comprises an LED light source, a tapered light collector and a light condensing mirror, wherein the LED light source is corresponding to the light inlet end surface of the tapered light collector; and the light condensing mirror is corresponding to the light outlet end surface of the tapered light collector. The LED automotive headlamp has the beneficial effects of being high in optical efficiency, simple in structure, easy to realize engineering manufacturing, and worthy of being popularized and applied.

Description

Automotive LED headlamp
Technical field
The present invention relates to car lighting technical field, particularly relate to automotive LED headlamp.
Background technology
LED light source is a kind of high efficiency, the long-life, the green light source that response is fast, shock resistance is strong.Be widely used in automobile tail light, day portable lighter, indicator lamp etc.
But the application in car headlamp field, still in the starting stage, main cause is in specific implementation process, various engineering technology problem such as the aspects such as luminous intensity distribution design, light efficiency, heat radiation, stress, volume are not also well solved, and optics (luminous intensity distribution) design is exactly one of difficult point wherein.
Traditional car headlamp, for Halogen lamp LED, xenon lamp luminous intensity distribution design, mainly contains three kinds:
(1) parabolic mirror: processing more easily realizes, but volume is large, the luminous intensity distribution free degree is little, is mainly used at present in high beam headlamp;
(2) free-form surface mirror: comprise a lot of unsymmetric structure unit, difficulty of processing is higher;
(3) compound ellipsoid reflector, shaping frequency modulated light plate, lens three groups of unit compositions: compound ellipsoid reflector comprises a lot of unsymmetric structure unit, difficulty of processing is higher, when towards batch micro operations, because fabrication tolerance is little, there is more limitation quality guarantee aspect.
Summary of the invention
The invention provides a kind of automotive LED headlamp, comprise LED light source, taper optical collector, condenser, the light inlet end face of the corresponding described taper optical collector of described LED light source, the light output end of the corresponding described taper optical collector of described condenser.
As a further improvement on the present invention, this car headlamp also comprises compound shaping frequency modulated light plate, described LED light source is three, three LED light sources are respectively the first LED light source, second LED light source, 3rd LED light source, described taper optical collector is three, three taper optical collectors are respectively the first taper optical collector, second taper optical collector, triconic optical collector, the light inlet end face of the corresponding described first taper optical collector of described first LED light source, corresponding described compound shaping frequency modulated light plate one end of light output end of described first taper optical collector, the light inlet end face of the corresponding described second taper optical collector of described second LED light source, corresponding described compound shaping frequency modulated light plate one end of light output end of described second taper optical collector, described triconic optical collector is positioned at described compound shaping frequency modulated light intralamellar part, the light inlet end face of the corresponding described triconic optical collector of described 3rd LED light source, described condenser is positioned at the described compound shaping frequency modulated light plate other end.
As a further improvement on the present invention, described compound shaping frequency modulated light plate left and right sides height difference H 1,0.1mm≤H1≤1mm.
As a further improvement on the present invention, described compound shaping frequency modulated light plate upper edge is to height difference H 2, the 0.5mm≤H2≤2.5mm of triconic optical collector.
As a further improvement on the present invention, described compound shaping frequency modulated light plate left and right sides angle a', a'=135 ° or a'=165 °.
As a further improvement on the present invention, described compound shaping frequency modulated light plate inside radius R, 15mm≤R≤60mm.
As a further improvement on the present invention, described taper optical collector comprises internal reflection taper optical collector, inner total reflection taper optical collector.
As a further improvement on the present invention, in described taper optical collector, the computing formula of light angle relation: B=A-2C*N, A is LED light source emergent ray initial angle, B is the shooting angle that LED light source emergent ray leaves taper optical collector right side, C is the angle of taper optical collector side and central shaft, and N is the number of times that light reflects in taper optical collector.
As a further improvement on the present invention, the described length D of taper optical collector and the pass of LED light source are: D≤Φ L*3, Φ L represents LED light source effective luminous zone diameter.
The invention has the beneficial effects as follows: the optical efficiency of automotive LED headlamp of the present invention is high, structure simple, engineering manufacture is easy to realize, applying of value.
Accompanying drawing explanation
Fig. 1 is the structural representation of first embodiment of the present invention;
Fig. 2 is the schematic perspective view of second embodiment of the present invention;
Fig. 3 is the structural representation of second embodiment of the present invention;
Fig. 4 is the cross-sectional view of second embodiment of the present invention;
Fig. 5 is the schematic perspective view of the 3rd embodiment of the present invention;
Fig. 6 is the structural representation of the 3rd embodiment of the present invention;
Fig. 7 is the cross-sectional view of the 3rd embodiment of the present invention;
Fig. 8 is taper optical collector operation principle schematic diagram of the present invention;
Fig. 9 is the luminous schematic diagram of LED light source of the present invention;
Figure 10 is compound shaping frequency modulated light plate cross-sectional view of the present invention;
Figure 11 is compound shaping frequency modulated light plate structure schematic diagram of the present invention;
Figure 12 is " GB25991 vapour Vehicular LED headlamp " III district light distribution requirements figure.
Figure 13 is optical collector structure schematic diagram of the present invention.
Detailed description of the invention
For LED area source, beam angle is all greater than the optical characteristics of 120 degree, and the index request of " GB25991 vapour Vehicular LED headlamp ".
The present invention proposes a kind of automotive LED headlamp that optical efficiency is high, structure simple, engineering manufacture is easy to realization being different from compound ellipsoid reflector.
As shown in Figure 1, as first embodiment of the present invention, this automotive LED headlamp is LED high beam headlamp, comprise LED light source 1, taper optical collector 2, condenser 3, the light inlet end face of the corresponding described taper optical collector 2 of described LED light source 1, the light output end of the corresponding described taper optical collector 2 of described condenser 3.
As shown in Figures 2 to 4, as second embodiment of the present invention, this automotive LED headlamp is LED lower beam headlamp, comprise compound shaping frequency modulated light plate 4, described LED light source 1 is three, three LED light sources 1 are respectively the first LED light source 5, second LED light source 6, 3rd LED light source 7, described taper optical collector 2 is three, three taper optical collectors 2 are respectively the first taper optical collector 8, second taper optical collector 9, triconic optical collector 10, the light inlet end face of the corresponding described first taper optical collector 8 of described first LED light source 5, corresponding described compound shaping frequency modulated light plate 4 one end of light output end of described first taper optical collector 8, the light inlet end face of the corresponding described second taper optical collector 9 of described second LED light source 6, corresponding described compound shaping frequency modulated light plate 4 one end of light output end of described second taper optical collector 9, it is inner that described triconic optical collector 10 is positioned at described compound shaping frequency modulated light plate 4, the light inlet end face of the corresponding described triconic optical collector 10 of described 3rd LED light source 7, described condenser 3 is positioned at described compound shaping frequency modulated light plate 4 other end.
As shown in Figs. 5 to 7, as the 3rd embodiment of the present invention, this automotive LED headlamp is also LED lower beam headlamp, from second embodiment difference, the 3rd embodiment is that the placed angle of the first LED light source 5, second LED light source 6, first taper optical collector 8, second taper optical collector 9 and second embodiment are different.
LED light source 1: provide enough luminous fluxes, designed by luminous intensity distribution, meets the index request of " GB25991 vapour Vehicular LED headlamp " distance light, lower beam headlamp.
Taper optical collector 2: the luminous intensity distribution design of condenser 3 of collecting the luminous flux of LED light source 1 outgoing, reduce LED light source 1 emergent light beam angle, be beneficial to; Taper optical collector 2 has two kinds of implementations: inner total reflection and internal reflection.Be characterized in: the efficiency of light energy utilization is high, volume is little, uniform-illumination.
In taper optical collector 2:
(1). inner total reflection: adopt high printing opacity, taper optical collector 2 made by high index of refraction optical material, LED light source 1 light enters wherein, be inside totally reflected, until taper optical collector 2 light output end.
(2). internal reflection: cavity structure made by taper optical collector 2, at inwall plating high reverse--bias rete.
(3) light of the different luminous zone of .LED light source 1, taper optical collector 2 majority reflection mixing, light output end have evenly Illumination Distribution.
(4). reduce the beam angle of LED light source 1 fast, be conducive to the luminous intensity distribution design of condenser 3, wherein, as shown in Figure 8, A is LED light source 1 emergent ray initial angle, and B is the shooting angle that LED light source 1 emergent ray leaves taper optical collector 2 right side, and C is the angle of taper optical collector 2 side and central shaft, N is the number of times that light reflects in taper optical collector 2, the so computing formula of light angle relation: B=A-2C*N.
As shown in Figure 9, the length D of taper optical collector 2 and the relation of LED light source 1: D≤Φ L*3.
In fig .9, oblique line district is LED light source 1 effectively luminous zone, and Φ L is LED light source 1 effectively luminous zone diameter.
As shown in Figure 10 and Figure 11, in compound shaping frequency modulated light plate 4:
(1). shaping is carried out to the light beam of taper optical collector 2 exit end, forms "cut-off"line.
(2). described compound shaping frequency modulated light plate 4 left and right sides height difference H 1,0.1mm≤H1≤1mm.
(3). described compound shaping frequency modulated light plate 4 upper edge is to the height difference H 2,0.5 of triconic optical collector 10 mm≤ H2≤2.5 mm.
(4). described compound shaping frequency modulated light plate 4 left and right sides angle a', a'=135 ° or a'=165 °.
(5). described compound shaping frequency modulated light plate 4 inside radius R, 15mm≤R≤60mm.
Compound shaping frequency modulated light plate 4 is compounded with taper optical collector structure wherein, carries out independent luminous intensity distribution to IIIth district that " GB25991 vapour Vehicular LED headlamp " requires, makes adjustable, the uniform-illumination of the illumination in IIIth district height.Be beneficial to driver and observe road sign and direction board.
Figure 12 is " GB25991 vapour Vehicular LED headlamp " III district light distribution requirements figure.
Through experiment, automotive LED headlamp of the present invention is test the carrying out that 25 meters are detected receiving screen at a distance, and uniform-illumination, the illumination in IIIth district are adjustable, are conducive to driver and observe road sign and direction board, to roadside, pedestrian also has warning function, and luminous intensity is soft, do not hinder eyes.
Condenser 3: the optical characteristics according to taper optical collector 2 designs, the light beam reaching compound shaping frequency modulated light plate 4 is distributed, the Illumination Distribution made on the receiving screen of 25 meters far away, meet " GB25991 vapour Vehicular LED headlamp " index request, as shown in fig. 13 that condenser 3.
Eyeglass face type data:
wherein, C = 1 R
1. aspheric surface S1:R1:
2. aspheric surface S2:R2:
3.1.5 ≤ | R 1 R 2 | ≤ 5 :
The receiving screen of experiment: be positioned at, 25 meters, headlamp front end, length and width are all greater than 8m*4m.
The present invention is compounded with taper optical collector in compound shaping frequency modulated light plate 4 structure, and specifically defines its parameter area, carries out independent luminous intensity distribution to GB " GB25991 vapour Vehicular LED headlamp " IIIth district, obtains uniform-illumination, meets the method for Standard.
The present invention adopts taper optical collector 2 pairs of LED light source 1 outgoing beams to carry out high efficiency collection, reduce beam exit angle computational methods fast, obtains the distribution of uniform illumination degree, is beneficial to the design of condenser luminous intensity distribution.
The present invention adopts taper optical collector mode, can be applied in the luminous intensity distribution design of LED high beam headlamp, LED lower beam headlamp, LED far and near one car headlamp.
The optical efficiency of automotive LED headlamp of the present invention is high, structure simple, engineering manufacture is easy to realize, applying of value.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.

Claims (9)

1. an automotive LED headlamp, is characterized in that: comprise LED light source, taper optical collector, condenser, the light inlet end face of the corresponding described taper optical collector of described LED light source, the light output end of the corresponding described taper optical collector of described condenser.
2. automotive LED headlamp according to claim 1, it is characterized in that: this car headlamp also comprises compound shaping frequency modulated light plate, described LED light source is three, three LED light sources are respectively the first LED light source, second LED light source, 3rd LED light source, described taper optical collector is three, three taper optical collectors are respectively the first taper optical collector, second taper optical collector, triconic optical collector, the light inlet end face of the corresponding described first taper optical collector of described first LED light source, corresponding described compound shaping frequency modulated light plate one end of light output end of described first taper optical collector, the light inlet end face of the corresponding described second taper optical collector of described second LED light source, corresponding described compound shaping frequency modulated light plate one end of light output end of described second taper optical collector, described triconic optical collector is positioned at described compound shaping frequency modulated light intralamellar part, the light inlet end face of the corresponding described triconic optical collector of described 3rd LED light source, described condenser is positioned at the described compound shaping frequency modulated light plate other end.
3. automotive LED headlamp according to claim 2, is characterized in that: described compound shaping frequency modulated light plate left and right sides height difference H 1,0.1mm≤H1≤1mm.
4. automotive LED headlamp according to claim 2, is characterized in that: described compound shaping frequency modulated light plate upper edge is to height difference H 2, the 0.5mm≤H2≤2.5mm of triconic optical collector.
5. automotive LED headlamp according to claim 2, is characterized in that: described compound shaping frequency modulated light plate left and right sides angle a', a'=135 ° or a'=165 °.
6. automotive LED headlamp according to claim 2, is characterized in that: described compound shaping frequency modulated light plate inside radius R, 15mm≤R≤60mm.
7. automotive LED headlamp according to claim 1, is characterized in that: described taper optical collector comprises internal reflection taper optical collector, inner total reflection taper optical collector.
8. the automotive LED headlamp according to any one of claim 1 to 7, it is characterized in that: in described taper optical collector, the computing formula of light angle relation: B=A-2C*N, A is LED light source emergent ray initial angle, B is the shooting angle that LED light source emergent ray leaves taper optical collector right side, C is the angle of taper optical collector side and central shaft, and N is the number of times that light reflects in taper optical collector.
9. automotive LED headlamp according to claim 8, is characterized in that: the described length D of taper optical collector and the pass of LED light source are: D≤Φ L*3, Φ L represents LED light source effective luminous zone diameter.
CN201511024421.9A 2015-12-29 2015-12-29 LED (light-emitting diode) automotive headlamp Pending CN105465717A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201511024421.9A CN105465717A (en) 2015-12-29 2015-12-29 LED (light-emitting diode) automotive headlamp
PCT/CN2016/106830 WO2017114027A1 (en) 2015-12-29 2016-11-22 Led automobile headlight

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201511024421.9A CN105465717A (en) 2015-12-29 2015-12-29 LED (light-emitting diode) automotive headlamp

Publications (1)

Publication Number Publication Date
CN105465717A true CN105465717A (en) 2016-04-06

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WO (1) WO2017114027A1 (en)

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WO2021147733A1 (en) * 2020-01-20 2021-07-29 华域视觉科技(上海)有限公司 Low-beam optical module, low-beam illumination module, vehicle lamp and vehicle

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CN108626676A (en) * 2018-02-09 2018-10-09 常州星宇车灯股份有限公司 A kind of vehicle projection light module

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WO2014174843A1 (en) * 2013-04-26 2014-10-30 三菱電機株式会社 Headlight module for vehicle, headlight unit for vehicle, and headlight device for vehicle
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Publication number Priority date Publication date Assignee Title
WO2017114027A1 (en) * 2015-12-29 2017-07-06 深圳华耀车灯科技有限公司 Led automobile headlight
WO2021147733A1 (en) * 2020-01-20 2021-07-29 华域视觉科技(上海)有限公司 Low-beam optical module, low-beam illumination module, vehicle lamp and vehicle
US11731552B2 (en) 2020-01-20 2023-08-22 Hasco Vision Technology Co., Ltd. Low beam optical module, low beam illumination module, vehicle lamp and vehicle

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