类型	定焦镜头	品牌	JCM-001-650
镜头结构	4P+1R	最大光圈	2.0
广角	60	拍摄角度	62（°）
镜头体积	M7	焦距	4.5

1.construction: 4p +ir filter

2.for 1/3.5〞(ov3640.ov5642.ov5640)sensor

3.effec tive focallength:4.0mm;

4.max image circle:￠6.0mm;

5.f/no:2.8;

6.fov:62°(￠5.2);

7.optice distortion <-1.5%;

8.relative illumination:80%;

9.ir coating:635±10nm at:50%

10.chief ray angle:<15°;

11.flange back length:1.30mm;

12.ir filter spec.(bulit-in,others available)

tavg>=88% @440-620 nm

t=50% @ 645±10 nm

tavg<=3% @700-1000 nm

t<5% @ 1050 nm;