Point Grey Flea3 GigE - GPIO Modes Explained

Point Grey Flea3 GigE Technical Reference 4 Flea3 GigE Physical Interface
4.4 Lens Mounting
Lenses are not included with individual cameras.
Title Article
Selecting a lens for your camera Knowledge Base Article 345
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The lens mount is compatible with C-mount lenses. Correct focus cannot be achieved using a CS-mount lens on a C-
mount camera.
The FL3-GE-13S2 model is also available with a CS-mount.
4.4.1 Back Flange Distance
The Back Flange Distance (BFD) is offset due to the presence of both a 1 mm infrared cutoff (IRC) filter and a 0.5 mm
sensor package window. These two pieces of glass fit between the lens and the sensor image plane. The IRC filter is
installed on color cameras. In monochrome cameras, it is a transparent piece of glass. The sensor package window is
installed by the sensor manufacturer. Both components cause refraction, which requires some offset in flange back
distance to correct.
The resulting C-mount BFDis 17.99 mm.
For more information about the IRC filter, see Infrared Cut-Off Filters.
Revised 10/29/2013
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