JPS59149107U

JPS59149107U - Floating lens feeding mechanism

Info

Publication number: JPS59149107U
Application number: JP4270583U
Authority: JP
Inventors: 均田中
Original assignee: 旭光学工業株式会社
Priority date: 1983-03-24
Filing date: 1983-03-24
Publication date: 1984-10-05

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案のフローティングレンズの繰す出し機構
の実施例を示す縦断上半図、電２図および第３図はそれ
ぞれ第１図の■矢視図および■矢視図である。１１・・・前群レンズ、１２・・・後群レンズ、１３・
・・前群レンズ枠、１４・・・後群レンズ枠、１５・・
・案内キー、１７・・・固定筒、１Ｂ・・・直進案内溝
、１９・・・直進案内孔、２０・・・案内ピン、２１・
・・後群ヘリコ、　イド筒、２２・・・距離操作筒、３
０・・・補正筒、３１・・・伝達ピン、３３・・・連動
板、３４・・・連動孔、４０・・・伝達手段、４１．４
２・・・Ｖ溝、４３・・・スチールボール、４５−゛・
・引張ばね、Ｈ３・・・間隔調整用へリコイドねじ。FIG. 1 is a longitudinal sectional upper half view showing an embodiment of the floating lens feeding mechanism of the present invention, and FIGS. 11...Front group lens, 12...Rear group lens, 13.
...Front group lens frame, 14...Rear group lens frame, 15...
・Guide key, 17... Fixed tube, 1B... Straight guide groove, 19... Straight guide hole, 20... Guide pin, 21.
...Rear group helicopter, Id tube, 22...Distance control tube, 3
0... Correction barrel, 31... Transmission pin, 33... Interlocking plate, 34... Interlocking hole, 40... Transmission means, 41.4
2...V groove, 43...steel ball, 45-゛・
・Tension spring, H3... Helicoid screw for spacing adjustment.

Claims

[Scope of utility model registration request]

(1) A fixed barrel connected to the camera body, a rear group recoil tube that is rotatably supported with respect to the fixed tube and rotated together with the distance operation tube, and a rear group edge that is screwed into the coid tube. A floating lens comprising: a rear group lens frame that moves forward and backward in a straight line as the rear group helicoid cylinder rotates; and a front group lens frame that is supported by the rear group lens frame so as to be movable in a straight line; A distance correction screw is formed in the frame, and a correction tube that rotates integrally with the distance adjustment tube and moves in the optical axis direction according to the distance adjustment screw is screwed into the distance correction screw, and the correction tube is A mechanism for feeding out a floating lens, comprising a transmission means for transmitting movement in the optical axis direction to the front group lens frame.

(2) Utility Model Registration In claim 1, the transmission means for transmitting the movement of the correction tube in the optical axis direction to the front group lens frame is
It consists of circumferential grooves formed at opposing positions of the sliding surfaces of the correction tube and the front group lens frame, and a steel ball that fits between the VFt, and a groove between the rear group lens frame and the front group lens frame. The mechanism for feeding out a floating lens is provided with a spring means that urges the two to move toward each other or move them apart so that the steel ball always comes into elastic contact with one of the surfaces of the V-groove.