Optical viewing device

Details Optical viewing device Optical viewing device

A - Human Necessities

61

B

240/82

A61B 1/00 (2006.01) A61B 1/002 (2006.01)

Patent

CA 1331594

-17- OPTICAL VIEWING DEVICE ABSTRACT OF THE DISCLOSURE An apparatus for viewing a region within a body cavity or the like. The apparatus includes an elongate light pipe having a distal end and a proximal end, which light pipe illuminates the region to be viewed adjacent the distal end of the pipe. An objective lens system is carried at that distal end which in a preferred embodi- ment forms a focused real image of the illuminated re- gion. This image is transmitted to the viewer through a series of relay lenses and, at the proximal end of the apparatus, through a viewing lens system. The light pipe and the lenses are composed of a polymeric material such as styrene, polycarbonate, acrylic, or the like, and are preferably aspheric lenses.

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