Light-weight high-magnification clinical viewer

Details Light-weight high-magnification clinical viewer Light-weight high-magnification clinical viewer

1993-08-31

1996-05-07

Nguyen, Thong Q.

Optical: systems and elements

Lens

Afocal

359362, 359399, G02B 1300, G02B 2300

Patent

active

055152090

ABSTRACT:
The light-weight high-magnification clinical viewer includes a three-element objective lens and a two-element eyepiece lens. Use of multiple lenses allows for a more compact package. The doublet eyepiece lens serves to reduce chromatic aberration at high magnification. The triplet objective serves to avoid 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.

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patent: 5191470 (1993-03-01), Wickholm et al.
patent: 5264962 (1993-11-01), Kho

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