镜头焦距、视场角、拍摄距离
1焦距与视场角计算公式
2靶面尺寸型号表
可知:像面尺寸1/2.5,长宽5.764.29mm,对角线7.182mm
像面尺寸1/3,长宽4.83.6mm,对角线6mm
3计算
其中:f为镜头焦距,ω为像面尺寸的长、宽、对角线值。
则,根据已知焦距、与靶面尺寸(sensor),计算视场角α(DHV),理论值与测量值如下:
焦距 | 视场角DHV | D 对角 | H水平 | V垂直 | D 对角 | H水平 | V垂直 |
---|---|---|---|---|---|---|---|
像面尺寸 | 1/2.5'' | 1/3'' | |||||
2.1mm | 理论值 | 119.49 | 108.18 | 91.35 | 110.02 | 97.63 | 81.2 |
2.3mm | 理论值 | 114.85 | 103.16 | 86.14 | 105.05 | 92.44 | 76.09 |
2.4mm | 理论值 | 112.62 | 100.78 | 83.71 | 102.68 | 90 73 | .74 |
2.5mm | 理论值 | 110.44 | 98.47 | 81.39 | 100.39 | 87.66 | 71.51 |
2.6mm | 理论值 | 108.32 | 96.24 | 79.18 | 97.17 | 85.42 | 69.39 |
2.7mm | 理论值 | 106.26 | 94.09 | 77.06 | 96.03 | 83.27 | 67.38 |
2.8mm | 理论值 | 104.11 | 91.61 | 74.91 | 93.95 | 81.2 | 65.47 |
2.9mm | 理论值 | 102.29 | 90 | 73.1 | 91.94 | 79.22 | 63.65 |
3mm | 理论值 | 100.39 | 88.08 | 71.26 | 90 | 77.32 | 61.93 |
3.3mm | 理论值 | 94.98 | 82.62 | 66.17 | 84.55 | 72.05 | 57.22 |
3.6mm | 理论值 | 89.86 | 77.32 | 61.58 | 79.61 | 67.38 | 53.13 |
4mm | 理论值 | 83.83 | 71.51 | 56.4 | 73.74 | 61.93 | 48.46 |
6mm | 理论值 | 61.8 | 51.28 | 39.34 | 53.13 | 43.6 | 33.4 |
8mm | 理论值 | 48.35 | 39.6 | 30.02 | 36.87 | 33.4 | 25.36 |
4其它资料
5参考网址
5.1史上最全的工业相机CCD/CMOS靶面尺寸规格说明
https://blog.csdn.net/m0_37651448/article/details/84945201
5.2CCD靶面尺寸划分
https://so.csdn.net/so/search?spm=1001.2101.3001.4498&q=CCD靶面尺寸划分&t=&u=
5.3相机组成、镜头焦距、视场角、清晰度的概念(一)
https://so.csdn.net/so/search?spm=1001.2101.3001.4498&q=相机组成、镜头焦距、视场角、清晰度的概念(一)&t=&u=
5.4相机镜头选择:相机焦距、视场角和景深(可视距离)之间的关系
https://so.csdn.net/so/search?spm=1001.2101.3001.4498&q=相机镜头选择:相机焦距、视场角和景深(可视距离)之间的关系&t=&u=
5.5镜头选型
http://mimacro.cn/index.php?case=archive&act=list&catid=17
5.6模组和镜头配套后焦距的计算方式
https://so.csdn.net/so/search?spm=1001.2101.3001.4498&q=模组和镜头配套后焦距的计算方式&t=&u=