Title:
EYEPIECE DEVICE FOR ENDOSCOPE
Document Type and Number:
Japanese Patent JP3348500
Kind Code:
B2
Abstract:
PURPOSE: To extremely stably perform positioning in a state where visibility a adjustment is made for a lens barrel by the operation of an air spring without using the part of a spring or the like.
CONSTITUTION: Sealing members 25a-25c are respectively interposed and attached between the fitting part of an eyepiece ring 24 for a press ring 22, the fitting part for visibility adjustment ring 17, a cover glass 23 and an intermediate ring 21 in an eyepiece device 10: and in addition to them, the sealing members 27a-27c are respectively interposed and attached between a nearea position on the eyepiece side of the lens barrel 13 than the position where a cam pin 14 is projectingly provided and a cylindrical main body 11, and between the position on the neare eyepiece side than the position where a through-hole 11a is formed and provided at the cylindrical main body 11 and the intermediate ring 21, and between the lens 12a and the lens press ring 26 of the lens barrel 13, and a sealed chamber 28 is formed between the lens barrel 13 and the cover glass 23 and compressed air is sealed on the inside of the sealed chamber 28 in the eyepiece device 10, so that one kand of the operation of the air spring is achieved and the lens barrel 13 is pressed to a side successively provided to a main body operation part 2 and the can pin 14 is press-contacted with the cam surface 16a of a can groove 16.
Inventors:
Youichi Segawa
Mitsuo Kondo
Mitsuo Kondo
Application Number:
JP34909193A
Publication Date:
November 20, 2002
Filing Date:
December 28, 1993
Export Citation:
Assignee:
Fuji Photo Optical Co., Ltd.
International Classes:
G02B23/26; A61B1/00; G02B7/04; G02B25/00; (IPC1-7): G02B23/26; A61B1/00; G02B7/04; G02B25/00
Domestic Patent References:
| JP55118006A | ||||
| JP5628737A | ||||
| JP5683324A | ||||
| JP57150935A |
Attorney, Agent or Firm:
Shunji Kagei