摘要
为了提高无人驾驶汽车对中远距离车辆目标的识别准确率,满足无人驾驶汽车对前方预瞄距离的要求,通过理论计算以及光学设计软件ZEMAX-EE,研究设计了一款适合安装于乘用车上的中远距离车载镜头。为了满足车载镜头在实际使用过程中对成像范围的要求,利用成像景深公式计算了对准距离为无穷远时,不同入瞳直径对应的成像范围,从而确定了满足实际使用条件、易于设计和检验的镜头参数设计方案。车载镜头的焦距为40mm,视场角为8.6°,入瞳直径为7mm,景深为30m^+∞,系统总长小于38mm。仿真分析结果表明,所设计车载镜头具有良好的成像质量,能够满足实际的使用要求。
In order to improve the recognition accuracy of medium and long distance vehicle targets and meet the requirements of the forward preview distance of pilotless automobile, a type of medium and long distance automotive lens suitable for passenger cars is studied through theoretical calculation and optical design software ZEMAX-EE. To meet the requirements of the imaging range of the vehicle lens during actual use, the imaging range with different entrance pupil diameters is calculated by using the depth of field formula, when the aiming distance is infinity. Then the lens parameter design scheme which satisfies actual service conditions is determined, and it is easy to design and test. For the automotive lens, the focal length is 40 mm, the field of view is 8.6°, the entrance pupil diameter is 7 mm, the depth of field is 30 m-＋∞, and the system total length is less than 38 mm. The simulation results show that the designed lens has good image quality and can meet the design requirements in actual use.
出处
《激光与光电子学进展》
CSCD
北大核心
2017年第10期403-409,共7页
Laser & Optoelectronics Progress
关键词
光学设计
车载镜头
畸变校正
车辆目标识别
无人驾驶汽车
optical design
automotive lens
distortion correction
target recognition of vehicles
pilotlessautomobile
