Electronic endoscope having reduced diameter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 18, 2003
Grant Date -
Jul 5, 2001
app pub date -
Dec 1, 2000
filing date -
Dec 3, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
An electronic endoscope has a tip portion with a tip end. This electronic endoscope comprises an imaging element provided in the tip portion; an imaging optical system provided in the tip portion at a position closer to the tip end than the imaging element; and a plurality of light-emitting elements for emitting light, each of which is provided in the tip portion at a position closer to the tip end than the imaging element. Each of the light-emitting elements is arranged such that a part of the light-emitting element is seen so as to overlap with the imaging element when viewed from the optical axis direction of the imaging optical system. According to this arrangement, it is possible to reduce the diameter of the tip portion of the electronic endoscope. Further, when such an electronic endoscope is used as a medical endoscope, it becomes possible to relieve the pain that patients may feel.
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