CN101858559A - High beam lamp reflector, high beam lamp and motor vehicle - Google Patents
High beam lamp reflector, high beam lamp and motor vehicle Download PDFInfo
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- CN101858559A CN101858559A CN201010154678A CN201010154678A CN101858559A CN 101858559 A CN101858559 A CN 101858559A CN 201010154678 A CN201010154678 A CN 201010154678A CN 201010154678 A CN201010154678 A CN 201010154678A CN 101858559 A CN101858559 A CN 101858559A
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- reflector
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Abstract
The invention is applicable in the field of illumination, and provides a high beam lamp reflector, a high beam lamp and a motor vehicle. The inner surface of the high beam lamp reflector is provided with a plurality of layers of free curved surfaces, the free curved surfaces are distributed vertically by using a light source as a center and arranged in a step shape, and the heights of the free curved surfaces are 3 to 7 millimeters; the reference surface of each free curved surface is a paraboloid, and the focal length of the paraboloid is 6 to 8 millimeters; and the optical axis of the light source is superposed with the central axis of the reflector, and the circumferential direction of a light outlet of the reflector is provided with a light section. According to the embodiment of the invention, the inner surface of the high beam lamp reflector is designed with the plurality of layers of free curved surfaces in the step shape so that the light emitted by the light source is reflected through the free curved surfaces and then emergent in parallel to form long-distance projection, and the light is centralized and meets the requirement of light distribution performance of the high beam lamp; and the light emitted by the light source is directly emergent or reflected once through the free curved surfaces or the light section and then emergent, so the light attenuation is low.
Description
Technical field
The invention belongs to lighting field, relate in particular to a kind of high beam reflector, high beam and motor vehicle.
Background technology
At present, the light source of car headlamp still is halogen tungsten lamp and high-voltage gas discharging light mainly, and the light fixture anti-seismic performance is not good, and service life is not long, and power consumption is bigger.Comparatively speaking, led light source then has advantages such as energy-conservation, that the life-span long, anti-seismic performance is good.LED is in recent years a focus as the development of car headlamp light source.
After 2004, various LED headlamps are begun in the international automobile exhibition to be put on display, in May, the 2007 little yarn of Japan (Koito) is made institute and successfully the white light LEDs headlamp is installed on the LEXUS LS600h vehicle, and this optical system adopts ellipsoid reflector and lens to form transmission type optical system.German OSRAM had released the led module " OSTAR Headlamp " towards car headlamp in 2007, and this ultra-high brightness LED light source towards car headlamp authenticates by car gage.2008, audi R8 released the first complete LED headlamp in the whole world, its integrated LED dipped headlights, high beam and steering indicating light.
The car headlamp optical system adopts " reflector 11+ lens 12+ optical cross section 13 " to design luminous intensity distribution mostly at present, as shown in Figure 1.This optical system light decay is more serious, especially uses the lens of rib structure, and light decay is a big problem.In order to satisfy the automobile light distribution requirements, the luminous flux of automobile front requires enough big, generally require greater than 1000lm, if light decay is excessive, original use two LEDs just can satisfy luminous intensity distribution, and will use more than 3, correspondingly, whole system also can increase radiating piece, circuit etc., and cost and technical difficulty also increase.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of high beam reflector, is intended to solve existing serious, the inefficient problem of high beam reflector light decay.
The embodiment of the invention is achieved in that a kind of high beam reflector, and its inner surface has the multilayer free form surface, and described free form surface is that the center distributes up and down with the light source, and stepped arrangement, and the height of described free form surface is 3～7mm; The datum level of each free curved surface is parabola, and described paraboloidal focal length is 6～8mm; The optical axis of light source overlaps with the axis of described reflector, the light-emitting window of described reflector be circumferentially with the optical cross section.
Another purpose of the embodiment of the invention is to provide a kind of high beam, and described high beam comprises: a substrate, be located at the LED of described substrate and be located at the reflector of the side of described substrate; The inner surface of described reflector has the multilayer free form surface, and described free form surface is that the center distributes up and down with described LED, and stepped arrangement, and the height of described free form surface is 3～7mm; The datum level of each free curved surface is parabola, and described paraboloidal focal length is 6～8mm; The optical axis of described LED overlaps with the axis of described reflector, the light-emitting window of described reflector be circumferentially with the optical cross section.
Another purpose of the embodiment of the invention is to provide a kind of motor vehicle, described motor vehicle comprises: mainly by a substrate, be located at the LED of described substrate and be located at the high beam that the reflector of the side of described substrate constitutes, the inner surface of described reflector has the multilayer free form surface, described free form surface is that the center distributes up and down with described LED, and stepped arrangement, the height of described free form surface are 3～7mm; The datum level of each free curved surface is parabola, and described paraboloidal focal length is 6～8mm; The optical axis of described LED overlaps with the axis of described reflector, the light-emitting window of described reflector be circumferentially with the optical cross section.
The embodiment of the invention is designed to stepped multilayer free form surface by the inner surface with high beam reflector, light parallel outgoing after the free form surface reflection that light source is sent, and the long distance projection, light is comparatively concentrated, meets the requirement of high beam luminous intensity distribution performance; The direct outgoing of the light that light source sends or be outgoing through free form surface or optical cross section primary event only, light decay is little.
Description of drawings
Fig. 1 is the cutaway view of the high beam that provides of prior art;
Fig. 2 is the perspective view of the high beam that provides of the embodiment of the invention;
Fig. 3 is the index path of the high beam that provides of the embodiment of the invention;
Fig. 4 is the front view of the high beam that provides of the embodiment of the invention;
The vertical view of the high beam that Fig. 5 provides for the embodiment of the invention;
The perspective view of the high beam of the motor vehicle that Fig. 6 provides for the embodiment of the invention.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention, the inner surface of high beam reflector is designed to stepped multilayer free form surface, the light that light source sends parallel outgoing after the free form surface reflection, light is comparatively concentrated, meet the requirement of high beam luminous intensity distribution performance, and light decay is less.
The inner surface of the high beam reflector that the embodiment of the invention provides has the multilayer free form surface, and described free form surface is that the center distributes up and down with the light source, and stepped arrangement, and the height of described free form surface is 3～7mm; The datum level of each free curved surface is parabola, and described paraboloidal focal length is 6～8mm; The optical axis of light source overlaps with the axis of described reflector, the light-emitting window of described reflector be circumferentially with the optical cross section.
The high beam that the embodiment of the invention provides comprises: a substrate, be located at the LED of described substrate and be located at the reflector of the side of described substrate; The inner surface of described reflector has the multilayer free form surface, and described free form surface is that the center distributes up and down with described LED, and stepped arrangement, and the height of described free form surface is 3～7mm; The datum level of each free curved surface is parabola, and described paraboloidal focal length is 6～8mm; The optical axis of described LED overlaps with the axis of described reflector, the light-emitting window of described reflector be circumferentially with the optical cross section.
The motor vehicle that the embodiment of the invention provides comprises: mainly by a substrate, be located at the LED of described substrate and be located at the high beam that the reflector of the side of described substrate constitutes, the inner surface of described reflector has the multilayer free form surface, described free form surface is that the center distributes up and down with described LED, and stepped arrangement, the height of described free form surface are 3～7mm; The datum level of each free curved surface is parabola, and described paraboloidal focal length is 6～8mm; The optical axis of described LED overlaps with the axis of described reflector, the light-emitting window of described reflector be circumferentially with the optical cross section.
Below to be example with LED as light source be elaborated to the specific implementation of the embodiment of the invention:
See also Fig. 2, the high beam that the embodiment of the invention provides comprises a substrate 51, be located at the LED50 of substrate 51 and be located at the reflector 52 of substrate 51 sides.The inner surface of reflector 52 has multilayer free form surface 21, this multilayer free form surface 21 is based upon on the parabolic datum level and is that the center distributes up and down with LED50, stepped arrangement, the curvature that is each free curved surface 21 is all approaching with the curvature of the datum level (parabola) of correspondence position, near each free curved surface 21 stepped arranging datum level (parabola).It is each all corresponding specific target reflecting area territory of free curved surface 21 that the light that 21 pairs of LED50 different directions of each free curved surface send carries out luminous intensity distribution, and the reflecting effect of each free curved surface 21 stacks up, and makes light spot shape satisfy the requirement of far lighting.
As Fig. 3～shown in Figure 5, the datum level of each free curved surface 21 is same parabola, and paraboloidal focal length is preferably 6～8mm, and correspondingly, the height of free form surface 21 is preferably 3～7mm, and the structure of same paraboloidal free form surface 21 is divided simple relatively.In the embodiment of the invention light-emitting window of reflector 52 be circumferentially with optical cross section 23, the light restriction that LED50 is sent in optical cross section 23 helps anti-dazzlely within the specific limits, avoids light pollution; For easy to process and anti-dazzle, optical cross section 23 is made as the face of cylinder.
Present embodiment is located at paraboloidal focus place with LED50, and the optical axis of LED50 is overlapped with the axis of reflector 52.The light that sends of LED50 is through the free form surface 21 reflection parallel outgoing in back like this, and long distance is throwed, and light is comparatively concentrated, meets the requirement of high beam luminous intensity distribution performance.The inner surface of reflector 52 is subdivided into multilayer free form surface 21 in the present embodiment, and every layer of free form surface 21 all realized accurate luminous intensity distribution, thereby can design undersized reflector, and the high beam size is also little.In addition, LED50 takes direct-injection type to place, the direct outgoing of its light that sends or be outgoing only through free form surface 21 or optical cross section 23 primary events, and light decay is little, the efficient height of high beam.
For increasing the long drive light intensity, the embodiment of the invention adopts the great power LED with four chips, and these four chips are square arranges, and the luminous angle of great power LED is preferably 100～120 °.For improving the reflection efficiency of reflector, above-mentioned free form surface 21 takes anodised aluminium to handle.The Transparent Parts of high beam can adopt plate glass, as is located at the plate glass 22 of reflector 52 light-emitting windows, and it does not participate in the luminous intensity distribution design, avoids the light decay that lens causes in the existing design, more helps improving the efficient of high beam.
See also Fig. 6, the headlight of the motor vehicle that the embodiment of the invention provides has two above-mentioned high beams 71.If the power of LED is enough big, above-mentioned headlight also can only have a high beam.Less because of the design size of reflector, help to reduce the size of high beam, thereby itself and dipped headlights or fog lamp can be integrated into a lamp housing.
The embodiment of the invention is chosen two high beams and is carried out simulation test, and wherein the luminous flux of LED is 600 ± 50lm, and half light intensity beam angle is 110 ± 5 degree, and the encapsulation diameter is 7.5 ± 0.5mm; The parabolic focal length of preferred reflector 52 is 7mm, and the height of preferred free form surface 21 is 5mm; The diameter of reflector 52 is 40mm, and length is less than 50mm.The effect that the optical superposition of two high beams, 71 projections is got up satisfies in " GB 4599-2007 lamps for vehicle silk bulb headlamp " requirement to the high beam luminous intensity distribution performance.Through simulation test, every index all meets the requirements, and test data sees following table for details.
| Test point or zone | Standard-required brightness value (lx) | Software simulation brightness value (lx) | Conclusion |
| ??Emax | 〉=48 and≤240 | ??52 | Qualified |
| ??HV | ??≥0.8Emax | ??48.6 | Qualified |
| The HV point is to 1125L and R | ??≥24 | ??≥32.6 | Qualified |
| The HV point is to 2250L and R | ??≥6 | ??≥14.1 | Qualified |
Annotate: above brightness value is tested on longitudinal maneuver car high beam 25m screen at a distance, Emax represents maximal illumination, HV represents lamp optical axis and intersection point screen (intersection point of horizontal line and vertical line on the test screen), 1125L and R represent the point of left and right distance H V point 1125mm on the H line, and 2250L and R represent the point of left and right distance H V point 2250mm on the H line.
The embodiment of the invention is designed to stepped multilayer free form surface by the inner surface with high beam reflector, light parallel outgoing after the free form surface reflection that light source is sent, and the long distance projection, light is comparatively concentrated, meets the requirement of high beam luminous intensity distribution performance; The direct outgoing of the light that light source sends or be outgoing through free form surface or optical cross section primary event only, light decay is little.Simultaneously, adopt LED, make high beam energy-conservation, reliable as light source.In addition, the plate glass of the light-emitting window setting of reflector has been avoided the light decay that lens causes in the existing design, helps further to improve the efficient of high beam.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a high beam reflector is characterized in that, the inner surface of described reflector has the multilayer free form surface, and described free form surface is that the center distributes up and down with the light source, and stepped arrangement, and the height of described free form surface is 3～7mm; The datum level of each free curved surface is parabola, and described paraboloidal focal length is 6～8mm; The optical axis of light source overlaps with the axis of described reflector, the light-emitting window of described reflector be circumferentially with the optical cross section.
2. high beam reflector as claimed in claim 1 is characterized in that, the height of described free form surface is 5mm.
3. high beam reflector as claimed in claim 1 is characterized in that, described paraboloidal focal length is 7mm.
4. as each described high beam reflector in the claim 1～3, it is characterized in that described optical cross section is the face of cylinder.
5. high beam, comprise: a substrate, be located at the LED of described substrate and be located at the reflector of the side of described substrate, it is characterized in that, the inner surface of described reflector has the multilayer free form surface, described free form surface is that the center distributes up and down with described LED, and stepped arrangement, the height of described free form surface are 3～7mm; The datum level of each free curved surface is parabola, and described paraboloidal focal length is 6～8mm; The optical axis of described LED overlaps with the axis of described reflector, the light-emitting window of described reflector be circumferentially with the optical cross section.
6. high beam as claimed in claim 5 is characterized in that, described LED is the great power LED with four chips, and described four chips are square arranges, and the luminous angle of described great power LED is 100～120 °.
7. high beam as claimed in claim 5 is characterized in that, the height of described free form surface is 5mm; Described paraboloidal focal length is 7mm.
8. high beam as claimed in claim 5 is characterized in that, described optical cross section is the face of cylinder.
9. motor vehicle, comprise: mainly by a substrate, be located at the LED of described substrate and be located at the high beam that the reflector of the side of described substrate constitutes, it is characterized in that, the inner surface of described reflector has the multilayer free form surface, described free form surface is that the center distributes up and down with described LED, and stepped arrangement, the height of described free form surface are 3～7mm; The datum level of each free curved surface is parabola, and described paraboloidal focal length is 6～8mm; The optical axis of described LED overlaps with the axis of described reflector, the light-emitting window of described reflector be circumferentially with the optical cross section.
10. motor vehicle as claimed in claim 9 is characterized in that, the height of described free form surface is 5mm; Described paraboloidal focal length is 7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010154678A CN101858559A (en) | 2010-04-16 | 2010-04-16 | High beam lamp reflector, high beam lamp and motor vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010154678A CN101858559A (en) | 2010-04-16 | 2010-04-16 | High beam lamp reflector, high beam lamp and motor vehicle |
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| CN101858559A true CN101858559A (en) | 2010-10-13 |
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| CN201010154678A Pending CN101858559A (en) | 2010-04-16 | 2010-04-16 | High beam lamp reflector, high beam lamp and motor vehicle |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364232A (en) * | 2011-10-12 | 2012-02-29 | 东莞市鼎聚光电有限公司 | Reflection type LED (Light-Emitting Diode) high beam for vehicle |
| CN102392965A (en) * | 2011-11-23 | 2012-03-28 | 广州大学 | LED (light emitting diode) front car lamp |
| CN102486296A (en) * | 2010-12-06 | 2012-06-06 | 海洋王照明科技股份有限公司 | Reflector of front fog lamp, front fog lamp and motor vehicle |
| CN103256546A (en) * | 2012-02-15 | 2013-08-21 | 汽车照明罗伊特林根有限公司 | Light module for dazzling-free headlight of motor car |
| CN103322507A (en) * | 2012-03-22 | 2013-09-25 | 海洋王照明科技股份有限公司 | Reflector as well as light source structure and lamp using reflector |
| CN103322492A (en) * | 2013-06-13 | 2013-09-25 | 奇瑞汽车股份有限公司 | LED (Light Emitting Diode) high beam |
| CN103574500A (en) * | 2012-07-23 | 2014-02-12 | 黄国进 | Total-reflection light collecting lens |
| CN110748851A (en) * | 2019-10-11 | 2020-02-04 | 华南理工大学 | Optical system of automobile headlamp |
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| CN1721758A (en) * | 2004-05-14 | 2006-01-18 | C.R.F.阿西安尼顾问公司 | Module for projecting a light beam |
| CN101097049A (en) * | 2006-06-28 | 2008-01-02 | 株式会社小糸制作所 | Vehicle lamp |
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| US4704661A (en) * | 1986-08-25 | 1987-11-03 | General Electric Company | Faceted reflector for headlamps |
| CN1497206A (en) * | 2002-10-18 | 2004-05-19 | �йҵ��ʽ���� | Lighting device for vehicle |
| CN1721758A (en) * | 2004-05-14 | 2006-01-18 | C.R.F.阿西安尼顾问公司 | Module for projecting a light beam |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486296A (en) * | 2010-12-06 | 2012-06-06 | 海洋王照明科技股份有限公司 | Reflector of front fog lamp, front fog lamp and motor vehicle |
| CN102486296B (en) * | 2010-12-06 | 2013-09-04 | 海洋王照明科技股份有限公司 | Reflector of front fog lamp, front fog lamp and motor vehicle |
| CN102364232A (en) * | 2011-10-12 | 2012-02-29 | 东莞市鼎聚光电有限公司 | Reflection type LED (Light-Emitting Diode) high beam for vehicle |
| CN102392965A (en) * | 2011-11-23 | 2012-03-28 | 广州大学 | LED (light emitting diode) front car lamp |
| CN103256546A (en) * | 2012-02-15 | 2013-08-21 | 汽车照明罗伊特林根有限公司 | Light module for dazzling-free headlight of motor car |
| CN103256546B (en) * | 2012-02-15 | 2017-12-08 | 汽车照明罗伊特林根有限公司 | For light module for dazzling-free headlight of motor car |
| CN103322507A (en) * | 2012-03-22 | 2013-09-25 | 海洋王照明科技股份有限公司 | Reflector as well as light source structure and lamp using reflector |
| CN103322507B (en) * | 2012-03-22 | 2015-08-05 | 海洋王照明科技股份有限公司 | Reflector, the light-source structure using this reflector and light fixture |
| CN103574500A (en) * | 2012-07-23 | 2014-02-12 | 黄国进 | Total-reflection light collecting lens |
| CN103322492A (en) * | 2013-06-13 | 2013-09-25 | 奇瑞汽车股份有限公司 | LED (Light Emitting Diode) high beam |
| CN110748851A (en) * | 2019-10-11 | 2020-02-04 | 华南理工大学 | Optical system of automobile headlamp |
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Application publication date: 20101013 |