# CMOS sensor size

Discussion in 'The Projects Forum' started by Por QuÃ©, Apr 2, 2013.

Mar 31, 2013
24
0
Hi all,

As part of the design of CMOS sensor I want to calculate its size and I found the following equation :

A=(Y*N)/T with:

A: Sensor size (in pixels)
Y: field of view
N: number of pixels assigned to the Body to be filmed
T: size of the smallest detectable body

my question is this the correct formula to calculate the size ?

Mar 31, 2013
24
0

3. ### kubeek Expert

Sep 20, 2005
5,341
1,008
Doesn´t look correct to me, or actually, what is the unit of filed of view?

Mar 31, 2013
24
0
its Degree isn't it ?

5. ### Markd77 Senior Member

Sep 7, 2009
2,803
596
What are the units of all of them?
A = width / height / total number of pixels?
etc
What bodies are you talking about?

Mar 31, 2013
24
0
the body is the retina and its unit is mm
the smallest part detectable in the retina its unit is µm
the number of pixels not yet determined

7. ### kubeek Expert

Sep 20, 2005
5,341
1,008
A simple unit check will show that this cannot be correct:
number of pixels = number of pixels * degrees / meters
Field of view would have to be in meters for this to be of any sense.