Hi all!

I was studying the datasheet of a CMOS sensor when I bumped into a graph which defined the CRA (Chief Ray Angle) of a lens as function of the FoV (Field of View).

cdn.sparkfun.com/datasheets/Dev/RaspberryPi/ov5647_full.pdf page 134

I've understood what is the CRA, and I've got the general idea of FoV even if not precisely. Thus I haven't understood yet the

https://ocw.mit.edu/courses/mechanical-engineering/2-71-optics-spring-2009/video-lectures/lecture-6-terms-apertures-stops-pupils-and-windows-single-lens-camera/MIT2_71S09_lec06.pdf slide 8

According the the presentation above, their concept of FoV is analogous to what I know CRA is, the maximum angular aperture from the center of the lens. What does the graph mean then? It seems logical to me that the two quantities should be linerly proportional, as at the beginning of the graph; but I cannot understand how can CRA saturate (and diminish too), while FoV increases.

Moreover, what does image height mean in the table below the graph?

Thank you very much indeed

I was studying the datasheet of a CMOS sensor when I bumped into a graph which defined the CRA (Chief Ray Angle) of a lens as function of the FoV (Field of View).

cdn.sparkfun.com/datasheets/Dev/RaspberryPi/ov5647_full.pdf page 134

I've understood what is the CRA, and I've got the general idea of FoV even if not precisely. Thus I haven't understood yet the

**precise**difference between the two.https://ocw.mit.edu/courses/mechanical-engineering/2-71-optics-spring-2009/video-lectures/lecture-6-terms-apertures-stops-pupils-and-windows-single-lens-camera/MIT2_71S09_lec06.pdf slide 8

According the the presentation above, their concept of FoV is analogous to what I know CRA is, the maximum angular aperture from the center of the lens. What does the graph mean then? It seems logical to me that the two quantities should be linerly proportional, as at the beginning of the graph; but I cannot understand how can CRA saturate (and diminish too), while FoV increases.

Moreover, what does image height mean in the table below the graph?

Thank you very much indeed

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