Miniscope Board

General Category => Optics => Topic started by: ivo.sonntag on November 09, 2017, 01:26:57 PM

Title: Field of view dependent on Achromatic lens?
Post by: ivo.sonntag on November 09, 2017, 01:26:57 PM

Hi Daniel,
how does the field of view depend on the Achromat used?
We noticed that it changes size, depending on the focal length.

Cheers,
Ivo

Title: Re: Field of view dependent on Achromatic lens?
Post by: Daniel Aharoni on November 11, 2017, 09:37:02 PM

Hi Ivo,
The focal length of the achromatic lens changes the overall magnification of the Miniscope system. There is a decrease of about 30% of FOV area when going between a 12.5mm focal length lens and a 20mm focal length lens. The longer the focal length, the smaller the FOV will be. You can use a resolution calibration test slide to get exact numbers.