Optical: systems and elements – Compound lens system
Patent
1995-06-07
1997-05-06
Nguyen, Thong
Optical: systems and elements
Compound lens system
359399, 359744, 359900, G02B 1300, G02B 2300
Patent
active
056276907
ABSTRACT:
The light-weight clinical viewer includes a two-element objective lens and a single-element eyepiece lens. Use of multiple lenses allows for a more compact package. The doublet objective serves to reduce vignetting while providing a wide field of view and reduced chromatic aberration. Image quality is further enhanced, while keeping the weight of the viewer down, through the use in the objective of light-weight high index glass. Moreover, the invention permits the use of a single mounting barrel assembly for different eyepieces to reduce manufacturing costs.
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Buchroeder Richard A.
Caplan Charles H.
Nguyen Thong
Surgical Acuity, Inc.
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