反射式ADB模组的光学设计

doi:10.16180/j.cnki.issn1007-7820.2022.04.008

摘要/Abstract

摘要： 为解决复杂道路条件下的汽车夜间行车安全问题,避免会车时使对向车辆驾驶人员产生炫目效果,文中以非成像理论为基础并结合折反射定律,建立LED出射光线与接收面上远光分布点的对应投射关系。通过数值迭代的方法求解自由曲面离散点,并导入到3D软件中进行拟合建模,设计出一种通过控制对应LED亮灭,用以组合形成不同远光光型的反射式ADB光学系统。最终样件的实际测试结果表明,当该光学系统处于最大工作条件时,其出光效率达到34.3%,最大光照度值为134 lx,配光结果满足远光法规各测试点要求。

关键词: 非成像光学, 自由曲面反射面, 自适应远光系统, 配光调节, LED, 汽车前照灯, 超精密加工, 自由曲面测量

Abstract:

In order to solve the problem of car driving safety at night under complex road conditions and avoid the dazzling effect of the drivers of the opposing vehicle when meeting cars, the study is based on the non-imaging theory and combined with the law of refraction and reflection to establish the corresponding projection relationship between the emitting light of LED and the far-light distribution point on the receiving surface. The discrete points of the free-form surface are solved by numerical iteration, and are imported into 3D software for fitting modeling. A reflective adaptive driving beam optical system is designed to combine and form different high beam types by controlling the on and off of the corresponding LEDs. The test results of the final sample show that when the optical system is in the maximum working condition, the luminous efficiency reaches 34.3%, and the maximum illuminance value is 134 lx, which demonstrates that the light distribution results meet the requirements of high beam regulations.

Key words: non-imaging optics, freeform surface reflector, adaptive driving beam, light distribution regulation, LED, automobile headlamp, ultra-precision machining, freeform surface measurement

中图分类号:

TN202

于存胜,姚红兵,黄立敏,杨夏军,吕万育. 反射式ADB模组的光学设计[J]. 电子科技, 2022, 35(4): 47-52.

Cunsheng YU,Hongbing YAO,Limin HUANG,Xiajun YANG,Wanyu LÜ. Optical Design of Reflective ADB Module[J]. Electronic Science and Technology, 2022, 35(4): 47-52.

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	测试点	水平角度	垂直角度	最大光强/cd
A 部分	左侧线1 对向来车在50 m处	4.80°~2.00°L	0.57°Up	625
	左侧线2 对向来车在100 m处	2.40°~1.00°L	0.30°Up	1 750
	左侧线3 对向来车在200 m处	1.20°~0.50°L	0.15°Up	5 450
	线4 同向前车在50 m处	1.70°L~1.00°R >1.00°~1.70°R	0.30°Up	1 850 2 500
	线5 同向前车在100 m处	0.90°L~ 0.50°R >0.50°~0.90°R	0.15°Up	5 300 7 000
	线6 同向来车在200 m处	0.45°L~0.45°R	0.10°Up	16 000
B 部分	50 R	1.72 R	D0.86	5 100
	50 V	V	D0.86	5 100
	50 L	3.34 L	D0.86	2 550
	25 LL	16 L	D1.72	1 180
	25 RR	11 R	D1.72	1 180

LED芯片分组	左侧模组远光分区	右侧模组远光分区
LED1 chip1	1.00°~6.40°	-6.40°~-1.00°
LED1 chip2	-0.40°~4.20°	-4.20°~0.40°
LED1 chip3	-2.00°~2.00°	-2.00°~2.00°
LED1 chip4	-4.20°~0.40°	-0.40°~4.20°
LED2 chip5	-6.40°~-1.00°	1.00°~6.40°
LED2 chip6	-11.50°~-1.60°	1.60°~11.50°
LED2 chip7	-13.30°~-4.00°	4.00°~13.30°
LED2 chip8	-15.20°~-6.20°	6.20°~15.20°

测试点/区域	测试值/lx	最小值/lx	最大值/lx
E_max	135.00	48.00	240.00
HV>0.8×E_max	128.70	104.90	-
H₂~H₃	79.99	24.00	-
H₁~H₄	15.17	6.00	-
H₂	90.91	24.00	-
H₃	79.99	24.00	-
H₁	51.47	6.00	-
H₄	15.17	6.00	-

测试点/区域	测试值/lx	最大值/lx	最小值/lx
E_max	134.00	48.00	240.00
HV>0.8×E_max	133.01	104.90	-
H₂~H₃	66.02	24.00	-
H₁~H₄	17.07	6.00	-
H₂	78.65	24.00	-
H₃	66.02	24.00	-
H₁	48.36	6.00	-
H₄	17.07	6.00	-