JPS6028743U

JPS6028743U - Aperture adapter for normally open diaphragm interchangeable lenses

Info

Publication number: JPS6028743U
Application number: JP12008783U
Authority: JP
Inventors: 均田中
Original assignee: 旭光学工業株式会社
Priority date: 1983-08-01
Filing date: 1983-08-01
Publication date: 1985-02-26

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案のアダプタをリバース撮影用アタッチメ
ントどして用いた場合の全体の接続構造例を示す側面図
、第２図は第１図のリバース撮影用アタッチメントの断
面図、第３図は第２図の回転環周りの構造例を示す要部
の正面図、〜第４図は交換レンズを装着した状態におけ
る回転環周りの状態を示す要部の正面図である。Ａ・・・カメラボディ、Ｂ・・・ベロ＝ズ、Ｃ・・・交
換レンズ、Ｄ・・・リバース撮影用アタッチメント、１
１・・・本体環、１２・・・マウント環、１３・・・付
属品取付枠、１４・・・付属品取付ねじ、１５・・・ス
チールボール、１６・・・回転環、１７・・・絞込突起
、１８・・・ストッパ突起、２２・・・引張ばね、２３
・・・絞しリーズ桿。Figure 1 is a side view showing an example of the overall connection structure when the adapter of the present invention is used as an attachment for reverse photography, Figure 2 is a sectional view of the attachment for reverse photography shown in Figure 1, and Figure 3 is a cross-sectional view of the attachment for reverse photography shown in Figure 1. FIG. 2 is a front view of the main parts showing an example of the structure around the rotating ring, and FIGS. 2 to 4 are front views of the main parts showing the state around the rotating ring when an interchangeable lens is attached. A...Camera body, B...Vero=Z, C...Interchangeable lens, D...Attachment for reverse photography, 1
DESCRIPTION OF SYMBOLS 1... Main body ring, 12... Mount ring, 13... Accessory mounting frame, 14... Accessory mounting screw, 15... Steel ball, 16... Rotating ring, 17... Squeezing projection, 18...Stopper projection, 22...Tension spring, 23
...Shibori Leeds rod.

Claims

[Scope of utility model registration request]

(1) A rotating ring rotatably supported on a main body ring equipped with a detachable mount for an interchangeable lens having a lock/unlock type aperture mechanism; a spring means for biasing rotation in the direction of , with a force stronger than the biasing force of the spring means; provided integrally with the rotating ring so as to interlock with the aperture rod of the interchangeable lens; A diaphragm adapter for a normally open diaphragm type interchangeable lens, which includes a diaphragm protrusion that urges a lens diaphragm mechanism in the diaphragm direction.

(2) Utility Model Registration Scope of Claim 1. The aperture adapter for a normally open aperture type interchangeable lens, wherein the rotating ring is rotatably supported by the main body ring via a steel ball.

(3) Scope of Utility Model Registration Claims In paragraph 1 or 2, the diaphragm of a normally open interchangeable lens has an accessory mounting screw provided at the end opposite to the lens mounting mount on the main body ring. Includes adapter.