Rigid video endoscope having a detachable imaging unit
First Claim
Patent Images
1. A rigid endoscope comprising:
- an elongated rigid inserting section;
an objective lens system provided in said inserting section at the distal end thereof for forming an optical image of an object;
a relay optical system inserted into the interior of said inserting section and opposing at one end surface said objective optical system, said optical image being transferred through said relay optical system from said one end surface to the other end surface; and
a disconnectable solid state imaging device disconnectably attached to said inserting section at a focus position on which said optical image transferred through said relay optical system is formed.
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Abstract
An electronic endoscope system has an elongated rigid inserting section and a relay optical system disposed therein. The relay optical system transfers an optical image. A imaging device is disposed at a focus position of the relay optical sysetm in a face-to-face relationship with the imaging surface thereof.
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Citations
35 Claims
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1. A rigid endoscope comprising:
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an elongated rigid inserting section; an objective lens system provided in said inserting section at the distal end thereof for forming an optical image of an object; a relay optical system inserted into the interior of said inserting section and opposing at one end surface said objective optical system, said optical image being transferred through said relay optical system from said one end surface to the other end surface; and a disconnectable solid state imaging device disconnectably attached to said inserting section at a focus position on which said optical image transferred through said relay optical system is formed. - View Dependent Claims (2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15)
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3. A rigid video endoscope comprising:
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an elongated rigid inserting section; a light guide inserted into said inserting section and having a light entrance end for receiving illumination light and a light exit end for allowing said illumination light to be passed therethrough; an objective lens system provided in said inserting section at the distal end thereof for forming an optical image of an object; a relay optical system for transferring said optical image formed by said objective optical system; a solid state imaging device disposed at a focus position on which said optical image transferred through said relay optical system is formed; and a visual field mask disposed within the relay optical system at one of focus positions in an optical axis extending from said objective optical system through said relay optical system to an imaging surface of said solid state imaging device.
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4. A rigid video endoscope comprising:
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an elongated rigid inserting section; an objective lens system provided in said inserting section at the distal end thereof for forming an optical image of an object; a relay optical system inserted into the interior of said inserting section and opposing said objective optical system at its one end, said optical image being transferred through said relay optical system from said one end surface to the other end surface; a beam splitter disposed in face-to-face relationship with the light exit surface of said relay optical system for separating said optical image into image elements and outputting said image elements; an eyepiece window disposed on the side of said beam splitter from which one of said separated image elements are output; and a solid state imaging device disposed at a focus position upon which the other of said image elements separated by said beam splitter is focused. - View Dependent Claims (14)
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16. A rigid video endoscope system, comprising:
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a rigid endoscope section including; an elongated rigid inserting section; a light guide inserted into said inserting section and having a light entrance end for receiving illumination light and a light exit end for allowing said illumination light to be passed therethrough; an objective lens system provided in said inserting section at the distal end thereof for forming an optical image of an object; a relay optical system for transferring said optical image formed by said objective optical system; and a solid state imaging device disposed at a focus position on which said optical image transferred through said relay optical system is formed; an eyepiece unit including; first connecting means for detachably attaching said eyepiece unit to said rigid endoscope section; an eyepiece lens disposed in a face-to-face relationship with the light exit end of said relay optical system when said eyepiece unit is attached to said rigid endoscope section; an eyepiece window disposed on the light exit side of said eyepiece lens; and an imaging unit including; second connecting means for detachably attaching said eyepiece unit to said rigid endoscope section; and a solid state imaging device disposed at a focus position of said relay optical system when said eyepiece unit is attached to said rigid endoscope section by said second connecting means. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 34, 35)
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17. A rigid endoscope system, comprising:
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a rigid endoscope including; an elongated rigid inserting section, a light guide inserted into said inserting section and having a light entrance end for receiving illumination light and a light exit end for allowing said illumination light to be passed therethrough, an objective lens system provided in said inserting section at the distal end thereof for forming an optical image of an object, a relay optical system for transferring said optical image formed by said objective optical system, and a disconnectable solid state imaging device disconnectably connected to said inserting section at a focus position of said relay optical system; a visual field mask disposed within the relay optical system; illumination light supplying means for supplying illumination light to the light entrance end of said light guide; signal processing means for effecting signal processing of output signals from said solid state imaging device; and display means for providing a visual display of video signals output from said signal processing means. - View Dependent Claims (30, 31, 32, 33)
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Specification