Discussion in 'The Projects Forum' started by Por QuÃ©, Apr 15, 2013.
How do I calculate the field of view for one pixel of CMOS sensor ?
Depends on the optics.
How depends on the optics ?
The sensor doesn't know or care where a photon comes from. If one hits with enough energy, the sensor reacts. Same with a piece of photographic film.
The directions from which photons may come depends on the physical arrangement and the optics. A film camera directs light from only a relatively narrow field of view onto the film. The FOV striking an individual film grain is, by design, very narrow. Lower FOV = higher resolution
If you just expose the sensor directly to a scene with no optics then the each pixel basically sees 180 degrees of the scene, i.e. it will see no detail.
Maybe another way to look at it is, if you want to capture say 100° of view and you have 100 pixels, the optics must be arranged so that each pixel captures just 1° each.
You may want to read up on it, for instance here.
Ok I understand what you mean
thanks a lot