Partition design method of vehicle LED dipped headlight
A design method and low beam technology, applied in optics, light source, electric light source, etc., can solve the problems that affect the speed of light distribution, hinder the widespread use of LED, and complicate the light distribution process, so as to achieve cost saving and simple light distribution scheme Ease of operation, simple optical system effect
Inactive Publication Date: 2010-12-15
梁山长虹专用车制造有限公司
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However, since most of the light distribution areas are now divided into multiple (more than three) partially overlapping areas for light distribution, and the shape of the light distribution area is mostly defined as a rectangle or an approximate rectangle, the light distribution process becomes more complicated. Complicated and difficult, affecting the speed of light distribution, hindering the widespread use of LEDs as automotive low beams, and thus affecting the process of white LEDs replacing current automotive headlight sources
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[0016] Describe specific implementation below in conjunction with example.
[0017] figure 1 According to the standard, the illuminance distribution diagram of the headlight according to the traffic rules on the right, and the xy coordinate system is established in the diagram. In China's national standard "GB4599-1994 Automobile Headlamp Light Distribution Performance", the illuminance value of some areas of the dipped beam is limited. According to the coordinate system proposed in the present invention, the national standard requires the illuminance of each district and each test point as follows :
[0018] The coordinate range of zone I is y50R Lux, E 50R The actual illuminance is 50R;
[0019] The coordinate range of Zone III is above y=0 (x<0) and y=x·tg15° (x≥0), and the maximum illuminance value is 0.7 lux;
[0020] The coordinate range of Zone IV is -750
[0021] The coordinate range of area II is...
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The invention relates to a partition design method of a vehicle LED dipped headlight. Two partially overlapped semicircular or semielliptical regions are drawn on a light distribution screen, and the central positions of the two regions are close to an HV point. The upper edge of the first region is a horizontal line, and the upper edge of the second region is a line segment tilting 15 DEG. Each region mainly corresponds to one group of LEDs, and the shape of an LED illuminant can be in any shape. Light distribution components of the two regions are basically similar, and the light distribution component of the second region is made by mirroring the light distribution component of the first region laterally and rotating by 15 DEG. Non-uniform illumination distribution specified by the standard and hard to design is converted into the two similar semicircular or semielliptical regions by partitioning the two regions in regular shape, the dipped headlight illumination distribution conforming to the standard can be formed by overlapping the two regions, and thus, the design process is greatly simplified.
Description
technical field [0001] The invention relates to a method for designing low beam lamps of automobiles, in particular to a partition design method for LED low beam lamps of automobiles. Background technique [0002] Light-emitting diode is a competitive new solid light source in the 21st century. Compared with traditional light sources, it has the advantages of long life, small size, low energy consumption, reliability and durability, fast response, flexible design, and flexible control. LEDs have been widely used in interior lighting devices and exterior signaling devices. With the development of white LED technology, the luminous flux of a single LED will continue to increase, and it has become an inevitable trend for LEDs to replace traditional light sources for headlights. [0003] Due to the flexible design and control of the LED, the light distribution of the LED light source can be carried out to achieve the light type required by the designer. Therefore, choosing LED...
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IPC IPC(8): F21S8/10G02B27/00F21Y101/02F21W101/02F21W107/10
Inventor 朱向冰罗青青倪建陈瑾陈巧云周定华
Owner 梁山长虹专用车制造有限公司
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