Video endoscope
First Claim
1. In a video endoscope including an insertable part at the tip in parallel with an imaging apparatus, the imaging apparatus including an observing window, imaging forming optical system and solid-state imaging device and a treating instrument channel through which a laser treating instrument is insertable, the improvement comprising:
- a light intercepting means for intercepting laser light leaking from said laser treating instrument inserted through said treating instrument channel and from reflected laser light so as not to enter a light receiving part of said solid-state imaging device through a course other than an axially-oriented optical course leading to said light receiving part of said solid-state imaging device through said image forming optical system from said observing window.
1 Assignment
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Accused Products
Abstract
A video endoscope provided in the insertable tip in parallel with an imaging apparatus and a treating instrument channel through which a laser treating instrument can be inserted and provided with a light intercepting part so that a leaking light of the laser treating instrument inserted through the treating instrument channel as well as reflected laser light may not enter the light receiving part of the imaging device through the other course than the optical course leading to the light receiving part of the imaging device through the image forming optical system from the observing window.
36 Citations
18 Claims
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1. In a video endoscope including an insertable part at the tip in parallel with an imaging apparatus, the imaging apparatus including an observing window, imaging forming optical system and solid-state imaging device and a treating instrument channel through which a laser treating instrument is insertable, the improvement comprising:
a light intercepting means for intercepting laser light leaking from said laser treating instrument inserted through said treating instrument channel and from reflected laser light so as not to enter a light receiving part of said solid-state imaging device through a course other than an axially-oriented optical course leading to said light receiving part of said solid-state imaging device through said image forming optical system from said observing window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
Specification