Stereo video endoscope objective lens system

Details Stereo video endoscope objective lens system Stereo video endoscope objective lens system

1991-04-18

1992-06-16

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

359362, H01J 4014

Patent

active

051226502

ABSTRACT:
A stereoscopic objective lens system for video endoscopes and borescopes includes two full-diameter doublets and a double set of two half-diameter identical doublets. The full-diameter doublets collimate object points, imaging object points to infinity. The large collimator doublets present equal-angle pairs from symmetrically disposed object points to the small stereo doublet pairs. This equal-angle property enables accurate object/image mapping onto the final stereo image pair, such that all parts of each left/right image can be mapped to within a fraction of a video pixel to each other.

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