Stereo video endoscope objective lens systems

Details Stereo video endoscope objective lens systems Stereo video endoscope objective lens systems

1995-04-18

1997-09-30

Lee, John D.

Optical: systems and elements

Stereoscopic

359376, 359466, 359475, G02B 2722

Patent

active

056731477

ABSTRACT:
A stereoscopic objective lens system for video endoscopes and borescopes includes two full-diameter doublets and two identical half-diameter ball lenses. The full-diameter doublets collimate object points, imaging object points to infinity. The full-diameter doublets present equal-angle pairs from symmetrically disposed object points to the ball lenses. 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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