Apparatus for positioning eyepiece of endoscope
First Claim
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1. An eyepiece assembly for an endoscope, comprising:
- (A) a lens sleeve supporting a lens of said eyepiece assembly and being slidably mounted for translational movement along an optical axis of said lens;
(B) a photographic positioning cam sleeve mounted for rotational movement about said axis, said photographic positioning cam sleeve having a photographic positioning cam slot formed therein;
(C) a dioptry adjusting cam sleeve mounted for translational movement along said axis, said dioptry adjusting cam sleeve having a dioptry adjusting cam slot formed therein; and
(D) a dioptry adjusting pin connected to said lens sleeve and extending through both of said cam slots, said pin cooperating with said cam slots in such a manner that;
(1) said cam slot in said photographic positioning cam sleeve positions said pin, and therefore said lens, at a predetermined axially position, corresponding to a photographing position, when said photographic positioning cam sleeve is in a first angular position; and
(2) said cam slot in said dioptry adjusting cam sleeve positions said pin, and therefore said lens, at an axial position determined by the axial position of said dioptry adjusting cam sleeve when said photographic positioning cam sleeve is in a second angular position, different from said first angular position.
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Abstract
An apparatus for positioning the eyepiece comprises a photographic positioning cam sleeve formed with a photographic positioning cam slot, and a dioptry adjusting cam sleeve formed with a dioptry adjusting cam slot. A dioptry adjusting pin is received in the cam slots and, as a photographing device is mounted on the endoscope, is driven by means of its engagement with the cam slots to position the eyepiece at a predetermined photographing position.
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Citations
20 Claims
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1. An eyepiece assembly for an endoscope, comprising:
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(A) a lens sleeve supporting a lens of said eyepiece assembly and being slidably mounted for translational movement along an optical axis of said lens; (B) a photographic positioning cam sleeve mounted for rotational movement about said axis, said photographic positioning cam sleeve having a photographic positioning cam slot formed therein; (C) a dioptry adjusting cam sleeve mounted for translational movement along said axis, said dioptry adjusting cam sleeve having a dioptry adjusting cam slot formed therein; and (D) a dioptry adjusting pin connected to said lens sleeve and extending through both of said cam slots, said pin cooperating with said cam slots in such a manner that; (1) said cam slot in said photographic positioning cam sleeve positions said pin, and therefore said lens, at a predetermined axially position, corresponding to a photographing position, when said photographic positioning cam sleeve is in a first angular position; and (2) said cam slot in said dioptry adjusting cam sleeve positions said pin, and therefore said lens, at an axial position determined by the axial position of said dioptry adjusting cam sleeve when said photographic positioning cam sleeve is in a second angular position, different from said first angular position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification