Wide-angle objective for endoscopes
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United States of America Patent
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-
Aug 15, 1989
Grant Date -
N/A
app pub date -
Apr 11, 1988
filing date -
Apr 11, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wide-angle objective for endoscopes, in particular for video endoscopes comprises fibre image conductors or CCD image transducers, in which known instruments are taken as a basis, in which a distally positioned objective comprises a meniscus lens with its concave surface facing towards the object, as well as another optical component located on the image side. To secure an uncomplicated structure, adequate image quality, a wide object field angle and short structural length, the image-side optical component is also produced as a meniscus lens.
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Cited Art Landscape
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