Hello. I have the pixycam 2.1 camera and I would like to know what the specifications of both the sensor and the lens are. According to the specifications, the horizontal viewing angle is 80º. I show you the image from the camera.
What type of M12 lenses can be used to replace the original lens? I need to reduce the viewing angle from 80º to 50º or 25º approximately.
Best regards.
Hello,
Pixy2.1 ships with an M12 1.7mm lens with IR-cut filter. Finding an M12 lens with IR-cut filter is sometimes difficult. Here’s one with a 3.6mm focal length:
Although we haven’t tried it…
To get the horizontal field of view for a lens use this equation:
horizontal field of view = 2*atan(1.43/f)
where f is the focal length in mm. So a 3.6mm lens like the one in the link above would have about a 40 degree horizontal field of view.
Hope this helps
Edward
Hello.
Thanks for your answer.
The value of 1.43, where has it been obtained? What is the format of this sensor?
The sensor format is 1/4"?
H:3.74mm and V:2.5mm?
For the above value of H the FoV is 95º using the following expresion FoV = 2*atan(H/2·f)
Can the fisheye effect of the lens change the FoV calculation values?
Could it be that the sensor is not 1/4" format but smaller than 1/6"?
Best regards.
Hello,
The sensor is Aptina MT9M114 (~1/6" diagonal).
Edward
Thanks a lot.
