optifdtd |
2012-04-14 07:42 |
BFL back focal length D4hT Hh UNiK6h_% ZEMAX defines the back focal length as the distance along the Z axis from the last surface made of glass to the paraxial image plane for the object at infinite conjugates. If no surfaces are made of glass, the back focal length is the distance from surface 1 to the paraxial image plane for the object at infinite conjugates. F Xr\
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