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二传感器尺寸「建议收藏」
2022-07-01 13:13:00 【全栈程序员站长】
大家好,又见面了,我是你们的朋友全栈君。
说到传感器的尺寸,其实是说感光器件的面积大小,这里就包括了CCD和CMOS。感光器件的面积越大,CCD/CMOS面积越大,捕捉的光子越多,感光性能越好,信噪比越高。
下面是家用小DC图像传感器尺寸换算为公制的大小(单位为毫米): 2/3英寸的画幅面积为(8.8×6.6mm) 1/1.8英寸的画幅面积为(7.178×5.319mm) 1/2英寸的画幅面积为(6.4×4.8mm) 1/2.7英寸的画幅面积为(5.27×3.96mm) 1/3英寸的画幅面积为(4.8×3.6mm) 1/3.2英寸的画幅面积为(4.536×3.416mm) 1/3.6英寸的画幅面积为(4×3mm)
1/4英寸的画幅面积为(3.2×2.4mm) 1/5英寸的画幅面积为(2.55×1.91mm) 1/6英寸的画幅面积为(2.15×1.61mm)
如果:
焦距 f = 35mm 最高分辨率:4256×2832 传感器尺寸:36.0×23.9 mm
根据以上定义可以有:
u0= 4256/2 = 2128 v0= 2832/2 = 1416 dx = 36.0/4256 dy = 23.9/2832
fx = f/dx = 4137.8 fy = f/dy = 4147.3
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