Patent EP0027651A2 successfully refreshed from Google Patents.
EP0027651A2
Expired / Lapsed
EP
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Endoscope ocular section
Assignee: Olympus Corp
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Filing: 1980-10-17
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Granted: —
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Expires: 2000-10-17
Abstract
Abstract An endoscope ocular section comprises an ocular support (50, 114) fixed to the proximal end of the control section (2) of an endoscope (1), a mount body (8, 110) for fitting a photographic camera (7, 106) to a prescribed position, a lens frame (10, 121) which holds an ocular (9, 122), is axially slidable through the central bore of the mount body (8, 110), and is provided with a radially extending pin (26, 127), an ocualr diopter adjusting mechanism for shifting the ocular (9,122) by moving the pin (26, 127), and a zero diopter defining element (18, 137) which is rotated when the photographic camera (7, 106) is fitted to the mount body (8, 110), moves the pin (26, 127) to the zero diopter position, and also shifts the ocular diopter adjusting mechanism to a position in which the pin (26, 127) is not affected by the mechanism. The ocular section further comprises a mechanism for resetting the ocular (9, 122) to the zero diopter position. The reset mechanism offers the advantage of enabling the photographic camera (7,106) to be fitted exactly to a prescribed position on the mount body (8, 110) easily and quickly, no matter what position the ocular (9, 122) may occupy before the resetting operation.
Inventors
- 👤 Tatuya Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 23:33
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00163; A61B1/00195; A61B1/04; G; G02; G02B; G02B23/00; G02B23/24; G02B23/2407; G02B23/2453
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
207 words
An endoscope ocular section comprising an ocular support which is fixed to a control section of an endoscope and through which an image guide extends, a hollow cylindrical mount body which has two ends, one end being connected to said ocular support and the other end being provided with a photographic camera and which has a central bore, a lens frame slidably fitted in said central bore of said mount body so as to approach and recede from said image guide, and an ocular held in said lens frame, characterised by comprising: an axial slit formed in said mount body; an ocular guiding pin extending radially outward from said lens frame through said axial slit; an ocular diopter adjusting mechanism provided on said ocular support for moving said ocular axially of said mount body of means of said ocular guiding pin; and a zero diopter defining element which surrounds said mount body so as to be rotatable but axially immovable and which has at least one inclined cam surface for moving said ocular guiding pin to allow said ocular to be disposed in the zero diopter position and for permitting said zero diopter defining element to be brough to a position free from said ocular guiding pin.
Claim 2
Dependent Claim
207 words
An endoscope ocular section comprising an ocular support which is fixed to a control section of an endoscope and through which an image guide extends, a hollow cylindrical mount body which has two ends, one end being connected to said ocular support and the other end being provided with a photographic camera and which has a central bore, a lens frame slidably fitted in said central bore of said mount body so as to approach and recede from said image guide, and an ocular held in said lens frame, characterised by comprising: an axial slit formed in said mount body; an ocular guiding pin extending radially outward from said lens frame through said axial slit; an ocular diopter adjusting mechanism provided on said ocular support for moving said ocular axially of said mount body of means of said ocular guiding pin; and a zero diopter defining element which surrounds said mount body so as to be rotatable but axially immovable and which has at least one inclined cam surface for moving said ocular guiding pin to allow said ocular to be disposed in the zero diopter position and for permitting said zero diopter defining element to be brough to a position free from said ocular guiding pin.
Claim 3
Dependent Claim
103 words
The endoscope ocular section according to claim 1, characterised in that said zero diopter defining element comprises a first rotatable cylindrical cam provided with said inclined cam surface; and said ocular diopter adjusting mechanism comprises a second rotatable cylindrical cam which surrounds said first rotatable cylindrical cam, is axially movable and has an inclined cam surface, a diopter adjusting ring which surrounds said second rotatable cylindrical cam and, when rotated, allows for rotation of said second rotatable cylindrical cam, and spring means provided in said mount body for urging said ocular guiding pin against said inclined surface of said second rotatable cylindrical cam.
Claim 4
Dependent Claim
60 words
The endoscope ocular section according to claim 2, characterised in that said first rotatable cylindrical cam has a first opening allowing for passage of said ocular guiding pin; the second rotatable cylindrical cam has a second opening similarly allowing for passage of said ocular guiding pin; and said inclined cam surfaces are respectively formed on said first and second openings.
Claim 5
Dependent Claim
59 words
The endoscope ocular section according to claim 3, characterised in that said first opening further comprises a circumferentially extending cam surface which is contiguously connected to said inclined cam surface of the first rotatable cylindrical cam at the downstream side of its rotation, and, when contacted by the ocular guiding pin, adjusts said ocular to the zero diopter position.
Claim 6
Dependent Claim
97 words
The endoscope ocular section according to claim 4, characterised in that said first rotatable cylindrical cam is provided with an inclined can, said second rotatable cylindrical cam is provided with a circumferentially extending slit, a slit pin passes through said slits of both cylindrical cams at the same time, and said inclined slit is inclined in such a direction as causes said second rotatable cylindrical cam to be axially moved so as to separate said ocular guiding pin from said inclined cam surface of said second rotatable cylindrical cam as said first rotatable cylindrical cam is rotated.
Claim 7
Dependent Claim
51 words
The endoscope ocular section according to claim 5, characterised in that said diopter adjusting ring has an axially extending slit, and said second rotatable cylindrical cam has an projecting engagement section which engages said slit of said diopter adjusting ring and allows the diopter adjusting ring to be moved only axially.
Claim 8
Dependent Claim
194 words
The endoscope ocular section according to claim 1, characterised in that an outer cylindrical housing surrounding the mount body is fixed to the ocular support; and said ocular diopter adjusting mechanism comprises: a hollow cylindrical slider which is provided with an axially extending slit allowing for insertion of said ocular guiding pin and is moved on the mount body in an axially movable state; a first compression coil spring which is set in said slider and normally urges said ocular guiding pin toward that end of said slit of said slider which faces said other end of said mount body; a diopter adjusting pin extending radially outward from said slider; a diopter adjusting cam assembly comprising a cam shaft rotatably mounted on said outer cylindrical casing and an adjusting cam which is fixed to said cam shaft, contacts said diopter adjusting pin and has such a configuration as moves said slider axially via said diopter adjusting pin as said cam shaft is rotated; and a second compression spring which is fitted to said mount body and urges said slider to let it to be pressed against said adjusting cam via said diopter adjusting pin.
Claim 9
Dependent Claim
36 words
The endoscope ocular section according to claim 7, characterised in that said cam shaft is fitted to said outer cylindrical casing to extend radially of said mount body; and the cam is a disc-shaped eccentric cam.
Claim 10
Dependent Claim
44 words
The endoscope ocular section according to claim 7, characterised in that said cam shaft extends axially of said mount body; and said adjusting cam has one end plane which is inclined with respect to said cam shaft and is contacted by said diopter-adjusting pin.
Claim 11
Dependent Claim
128 words
The endoscope ocular section according to claim 9, characterised in that said zero diopter definig element compries a cylindrical cam surrounding said slider, and is provided with a first opening whose edge facing said one end of the mount body constitutes a first inclined cam surface, a second opening whose edge facing the other end of the mount body constitutes an second inclined cam surface inclined in the opposite direction to said first inclined cam surface, and a control pin which passes through the second opening and is fixed to said slider; and both inclined cam surfaces are so arranged as to let said ocular guiding pin be set in such a position as causes said ocular to occupy a zero diopter position at the rotation downstream end.
References Cited (Backward Citations)
No citation records indexed.
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