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Proceedings Paper

New family of plastic endoscope designs
Author(s): Richard F. Horton; Thomas O. Bales
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Paper Abstract

We have explored a new family of 6 mm imaging endoscope designs for laparoscopes. These designs use a `solid' relay lens made up of plastic lens components bonded together in a repetitive fashion to form a long, monolithic relay element without air spaces. The lack of air spaces allows for the elimination of coatings and spacing elements. This simplifies construction and should considerably lessen cost. A four element objective lens is presented for the system which uses a plano-convex sapphire element as a combination window and lens element. The other three lens elements are plastic, and produce an image which is `buried' in the monolithic relay. Two designs are discussed, a relatively inexpensive, `single use' design, which incorporates easy-to-fabricate, low-temperature plastic lens elements, and a more expensive, `autoclavable' design, using high-temperature plastic lens elements. Both designs exhibit good optical resolution, and high optical throughput and contrast.

Paper Details

Date Published: 12 May 1995
PDF: 12 pages
Proc. SPIE 2383, Micro-Optics/Micromechanics and Laser Scanning and Shaping, (12 May 1995); doi: 10.1117/12.209032
Show Author Affiliations
Richard F. Horton, Science Applications International Corp. (United States)
Thomas O. Bales, Symbiosis Corp. (United States)

Published in SPIE Proceedings Vol. 2383:
Micro-Optics/Micromechanics and Laser Scanning and Shaping
M. Edward Motamedi; Leo Beiser, Editor(s)

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