Appendix G Accessories 309
G.6 Optical Distance from Mounting Face to Image Plane
Each adapter has a preset optical distance from the mounting face to the image plane. The
distance varies from one adapter type to another and is described in greater detail on the
PI-MAX4 outline drawings.
For quick reference, the distances are provided here:
• C-Mount
Mounting face to image plane is factory preset to an optical distance of
0.690” ± 0.010” [17.53 mm ± 0.25 mm].
• Spectroscopy
Mounting face to image plane is factory preset to an optical distance of
0.894” ± 0.010” [22.71 mm ± 0.25 mm].
• F-Mount
Mounting face to image plane is factory preset to an optical distance of
1.831” ± 0.010” [46.50 mm ± 0.25 mm].
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