CN100549501C - Projection type optical system structure - Google Patents

Projection type optical system structure Download PDF

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Publication number
CN100549501C
CN100549501C CNB2005101091352A CN200510109135A CN100549501C CN 100549501 C CN100549501 C CN 100549501C CN B2005101091352 A CNB2005101091352 A CN B2005101091352A CN 200510109135 A CN200510109135 A CN 200510109135A CN 100549501 C CN100549501 C CN 100549501C
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CN
China
Prior art keywords
light
lenticular
type optical
projection type
reflector
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Expired - Fee Related
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CNB2005101091352A
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Chinese (zh)
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CN1952470A (en
Inventor
吴享珍
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DIWEIXI TRAFFIC INDUSTRY Co Ltd
TYC Brother Industrial Co Ltd
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DIWEIXI TRAFFIC INDUSTRY Co Ltd
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Priority to CNB2005101091352A priority Critical patent/CN100549501C/en
Publication of CN1952470A publication Critical patent/CN1952470A/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The present invention is a kind of projection type optical system structure, and described projection type optical system is to be used for the Vehicular headlamps device, and it mainly comprises, the light source group, and it includes holder, light emitting diode and reflector body; Lenticular body, it is fixedly arranged on light source group the place ahead; By being removed, the left and right sides of lenticular body forms tangent plane, make lenticular body narrowed width in the horizontal direction, when the multiple light courcess system that is formed as light source with light emitting diode, a plurality of lenticular bodies can be close to, form tightr and a multiple light courcess projection system that the space is littler, to avoid producing the too huge situation of optical system.

Description

Projection type optical system structure
Technical field
The present invention relates to a kind of projection type optical system structure, particularly a kind of with the light source of light emitting diode as projection type optical system, and be applied to the projection type optical system structure of Vehicular lamp.
Background technology
The Vehicular lamp of safety, high efficiency, moulding streamline is a car light research and development target always, understands road conditions by the auxiliary driver of help of car light is clear, and reduces irradiation other vehicle and pedestrian are produced the danger of dazzle and uncomfortable.
How existing Vehicular lamp especially auto bulb has used existing projection type optical system 1, the described projection type optical system 1 main assembly of forming has light source group 11 and lenticular body 12, as shown in Figure 1, described light source group 11 is made up of illuminator 111 and reflector body 112; See also shown in Figure 2, it is the light path projection principle of described projection type optical system 1, it is first focus 2 that illuminator 111 is positioned at light path, accumulate on second focus 3 in light that illuminator 111 is cast out reflecting surface 113 via reflector body 112, and but light scioptics body 12 is throwed away light, can make the end user of vehicle can obviously see the road ahead situation.
Light emitting diode (Light Emitting Diode, LED) since being used by invention, along with the technology of semiconductor chips is updated and the rapid raising of encapsulation technology, developed the light emitting diode that high brightness, and the brightness of described high brightness LED or even substantially exceeded the conventional incandescent bulb, simultaneously to have a volume little for light emitting diode, in light weight, power consumption is few, life-span is long, advantage such as short and anti-seismic performance of response time is good, make the vehicle manufacturer see the advantage of high brightness LED, attempted that light emitting diode is used for Vehicular lamp and used, as the light source of Vehicular lamp;
Continuous see also shown in Figure 3, for the embodiment of light emitting diode 412 as the light source of projection type optical system; Described projection type optical system 4 is made up of light source group 41 and lenticular body 42, and described light source group 41 is made up of holder 411, light emitting diode 412 and reflector body 413; Described projection type optical system 4 and different being of projection type optical system 1 (as shown in Figure 1) in the past, the former is to use the light source of light emitting diode 412 as projection type optical system 4, and the latter is to use the light source of traditional automobile-used bulb as projection type optical system 1;
Yet the brightness of light emitting diode 412 on the market at present still can't reach the brightness of general automobile-used bulb, must use the projection type optical system 4 (as shown in Figure 3) of multiple light courcess system to meet the optical system of relevant laws and regulations; The projection type optical system 4 of described multi-source system must be the above projection type optical system 4 of at least two groups and form a Vehicular lamp, and describedly organizes independently that projection type optical system 4 can cause the whole system of Vehicular lamp huge more.
In view of this, disappearance part in all uses that the inventor is caused at existing projection type optical system, and it is to have a broadness but not high luminous intensity distribution that relevant laws and regulations require Vehicular lamp more, based on this reason is to sprout to think the creation improvement, after long-term time study improvement, there is generation of the present invention the beginning.
Summary of the invention
The objective of the invention is to, by being removed, the left and right sides of lenticular body forms tangent plane, make lenticular body narrowed width in the horizontal direction, when the multiple light courcess system that is formed as light source with light emitting diode, a plurality of lenticular bodies can be close to, form tightr and a multiple light courcess projection system that the space is littler, produce to avoid the too huge situation of optical system.
To achieve these goals, the invention provides a kind of projection type optical system structure, described projection type optical system is used for the Vehicular headlamps device, it is characterized in that, comprising:
The light source group, it includes holder, at least two light emitting diodes and a reflector body; Described holder includes substrate and at least two pedestals, and described pedestal is convexly set on the substrate; Described light emitting diode is fixedly arranged on the pedestal of holder; Described reflector body is fixedly arranged on the substrate of holder, and described reflector body has the cambered surface of continuous at least two similar spheroids in end face, and the dual-side in reflector body respectively is a tangent plane simultaneously;
Lenticular body, it is fixedly arranged on light source group the place ahead, and described lenticular body has continuous at least two cambered surfaces, and the apical margin of described lenticular body and root edge have continuous at least two circular arcs, and is a plane in two circular arc junctions, and the dual-side in lenticular body respectively is a tangent plane simultaneously.
Also comprise a shadow shield, described shadow shield is fixedly arranged between light source group and the lenticular body.
Projection type optical system structure of the present invention has advantage what follows, and it is described below:
1. the lenticular body of projection type optical system, be to be equivalent to the both sides of two existing lenticular bodies be formed tangent plane and link together, its objective is because of projection type optical system 5 when the horizontal throw light, do not have many rays pass through lens bodies both sides, therefore the both sides of lenticular body are removed and form tangent plane, do not influence the effect of overall optical system.
2. the lenticular body of projection type optical system is that its left and right sides is removed, make lenticular body narrowed width in the horizontal direction, when the multiple light courcess system that is formed as light source with light emitting diode, a plurality of lenticular bodies can be close to, and form tight and the littler multiple light courcess projection system in space, to avoid producing the too huge situation of optical system.
3. the light radiation distribution character of light emitting diode makes light concentrate on central part mostly and low more the closer to horizontal direction brightness, therefore the both sides of reflector body can be reduced and does not influence the effect of overall optical system.
Description of drawings
Fig. 1 is the three-dimensional appearance schematic diagram of existing projection type optical system;
Fig. 2 is the light path projection principle of Fig. 1;
Fig. 3 is the three-dimensional appearance schematic diagram of existing multi-source formula optical system;
Fig. 4 is the three-dimensional appearance schematic diagram of projection type optical system;
Fig. 5 is the decomposing schematic representation of projection type optical system;
Fig. 6 is the light radiation distribution map of light emitting diode;
Fig. 7 is the optical path schematic diagram of the part vertical section of Fig. 5;
Fig. 8 is the part of horizontal section optical path schematic diagram of Fig. 5;
Fig. 9 is another embodiment of projection type optical system;
Figure 10 is the optical path schematic diagram of the part vertical section of Fig. 9.
Description of reference numerals
Prior art: 1 projection type optical system; 11 light source groups; 12 lenticular bodies; 2 first focuses; 3 second focuses; 4 projection type optical systems; 41 light source groups; 411 holders; 412 light emitting diodes; 413 reflector body; 42 lenticular bodies.
The present invention: 5 projection type optical systems; 51 light source groups; 511 holders; 5111 substrates; 5112 pedestals; 512 light emitting diodes; 513 reflector body; 5131 reflectors; 5132 tangent planes; 5133 reflectings surface; 52 lenticular bodies; 521 cambered surfaces; 522 apical margins; 523 root edges; 524 tangent planes; 6 focus points; 7 shadow shields.
The specific embodiment
At first, seeing also Fig. 4 and shown in Figure 5, is the three-dimensional appearance and the decomposing schematic representation of projection type optical system 5; Described projection type optical system 5 can be used in the Vehicular headlamps device, and it mainly contains light source group 51 and lenticular body 52; Wherein,
Described light source group 51 includes holder 511, at least two light emitting diodes 512 and a reflector body 513; Described holder 511 includes substrate 5111 and at least two pedestals 5112, and described pedestal 5112 is convexly set on the substrate 5111, and described pedestal 5112 sets firmly for light emitting diode 512; Described light emitting diode 512 is fixedly arranged on the pedestal 5112 of holder 511; Described reflector body 513 is fixedly arranged on the substrate 5111 of holder 511, and described reflector body 513 has the cambered surface 5131 of continuous at least two similar spheroids at its end face, the dual-side of reflector body 513 respectively is a tangent plane 5132 simultaneously, described reflector body 513 inner reflection faces 5133, the light that reflection light emitting diode 512 is throwed;
Described lenticular body 52 can be non-spherical lens or Fresnel lens, and described lenticular body 52 is installed in light source group 51 the place aheads, described lenticular body 52 has continuous at least two cambered surfaces 521, and the apical margin 522 of described lenticular body 52 and root edge 523 have continuous at least two circular arcs, two circular arc junctions are a plane, and the dual-side in lenticular body 52 respectively is a tangent plane 524 simultaneously;
For clear understanding structure of the present invention and purpose thereof, be illustrated at optical path of the present invention;
See also shown in Figure 6ly, be the light radiation distribution map of light emitting diode 512; The light radiation distribution character of described light emitting diode 512 is that the luminous intensity that close central part is throwed is for the strongest, and is then weak more the closer to the luminous intensity of horizontal direction; In addition, the reflector body 513 of described projection type optical system 5 is in order to reflect the light that light emitting diode 512 is projected, and can meet the desired broadness of relevant laws and regulations but highly not high luminous intensity distribution, 5131 cambered surfaces that must be designed to have similar spheroid of the reflector of described reflector body 513, make reflector body 513 have vertical section and the difform profile of horizontal profile simultaneously, that is the distance of reflector 5131 central points of the focus of the vertical section of reflector body 513 and horizontal profile and reflector body 513 is different, make that also the reflector 5131 of reflector body 513 is to be formed by the oval of unlimited a plurality of different focal (focus is to the distance of central point), and form many elliptical reflectings body 5131 (Polyellipsoid Reflector);
Continuous see also shown in Figure 7ly, be the optical path schematic diagram of the part vertical section of projection type optical system 5; It is high and have clearly by (cut-off) light type that described projection type optical system 5 must conform with the height of vertical light distribution, when projection type optical system 5 starts, light emitting diode 512 as light source projects light, the reflector 5131 of described light by reflector body 513 focuses on the light vertical reflection near the focus point 6 of lenticular body 52, but make 52 projections of light scioptics body, and in order to make more rays scioptics body 52, in the distribution of light path even can use the root edge 523 of lenticular body 52;
Continuous see also shown in Figure 8ly, be the optical path schematic diagram of the part of horizontal section of projection type optical system 5; Described projection type optical system 5 also must conform with the luminous intensity distribution with a broadness, when projection type optical system 5 starts, light emitting diode 512 as light source projects light, described light reflects light level by the reflector 5131 of reflector body 513, make lenticular body 52 that a distant place is throwed and be gathered in to light level, and light radiation distribution character because of light emitting diode 512 itself, the luminous intensity that to be light emitting diode 512 throwed near central parts is for the strongest, luminous intensity the closer to horizontal direction is then weak more, and the light that light emitting diode 512 is projected throws by many light is concentrated of reflector 5131 reflex times of reflector body 513;
The light path of the unlimited perpendicular projection of above-mentioned projection type optical system 5 and the light path of unlimited level projection are combined, can constitute a broad but highly not high light type.
Continuous see also shown in Figure 9ly, be another embodiment of projection type optical system 5; The main difference of described projection type optical system 5 is that described projection type optical system 5 contains light source group 51, lenticular body 52 and shadow shield 7; Described light source group 51 includes holder 511, at least two light emitting diodes 512 and a reflector body 513; Described lenticular body 52 is fixedly arranged on the place ahead of light source group 51; Described shadow shield 7 is fixedly arranged between light source group 51 and the lenticular body 52, can block the part light that light source group 51 is projected, and forms the switching effect of distance light and dipped beam, as shown in figure 10.
The above only is preferred embodiment of the present invention, and when not limiting scope of the invention process with this, i.e. the equivalence of being done according to the present patent application claim and description of the invention content generally changes and modifies, and all should still belong in the scope that patent of the present invention contains.

Claims (4)

1. projection type optical system structure, described projection type optical system is used for the Vehicular headlamps device, it is characterized in that, comprising:
The light source group, it includes holder, at least two light emitting diodes and a reflector body; Described holder includes substrate and at least two pedestals, and described pedestal is convexly set on the substrate; Described light emitting diode is fixedly arranged on the pedestal of holder; Described reflector body is fixedly arranged on the substrate of holder, and described reflector body has the cambered surface of continuous at least two spheroids in end face, and the dual-side in reflector body respectively is a tangent plane simultaneously;
Lenticular body, it is fixedly arranged on light source group the place ahead, and described lenticular body has continuous at least two cambered surfaces, and the apical margin of described lenticular body and root edge have continuous at least two circular arcs, and is a plane in two circular arc junctions, and the dual-side in lenticular body respectively is a tangent plane simultaneously.
2. projection type optical system structure as claimed in claim 1 is characterized in that: also comprise a shadow shield, described shadow shield is fixedly arranged between described light source group and the described lenticular body.
3. projection type optical system structure as claimed in claim 1 or 2 is characterized in that: described lenticular body is a non-spherical lens.
4. projection type optical system structure as claimed in claim 1 or 2 is characterized in that: described lenticular body is a Fresnel lens.
CNB2005101091352A 2005-10-18 2005-10-18 Projection type optical system structure Expired - Fee Related CN100549501C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005101091352A CN100549501C (en) 2005-10-18 2005-10-18 Projection type optical system structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005101091352A CN100549501C (en) 2005-10-18 2005-10-18 Projection type optical system structure

Publications (2)

Publication Number Publication Date
CN1952470A CN1952470A (en) 2007-04-25
CN100549501C true CN100549501C (en) 2009-10-14

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013120333A1 (en) * 2012-02-15 2013-08-22 宁波比格斯通光电科技有限公司 Headlamp with integrated high and low beam
CN202868531U (en) * 2012-10-17 2013-04-10 广东骑光车灯工业有限公司 LED headlamps of motor vehicle
FR3002303B1 (en) * 2013-02-21 2015-03-20 Valeo Vision UNIT OF LIGHTING AND / OR SIGNALING IN PARTICULAR OF A MOTOR VEHICLE
KR101628452B1 (en) * 2014-03-27 2016-06-08 현대자동차주식회사 Head lamp for vehicle
FR3028007A1 (en) * 2014-10-29 2016-05-06 Peugeot Citroen Automobiles Sa VEHICLE PROJECTOR
CN104864344A (en) * 2015-06-08 2015-08-26 哈尔滨固泰电子有限责任公司 Car LED headlamp light distribution device and method
CN105135922A (en) * 2015-08-28 2015-12-09 中山市绿涛电子科技有限公司 Radiator
CN106641944A (en) * 2015-10-30 2017-05-10 法雷奥照明湖北技术中心有限公司 Lighting device for motor vehicle and motor vehicle

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