JPS58123426U

JPS58123426U - depth of focus display device

Info

Publication number: JPS58123426U
Application number: JP1979682U
Authority: JP
Inventors: 永田　幸昭; 天田　光正
Original assignee: マミヤ光機株式会社
Priority date: 1982-02-17
Filing date: 1982-02-17
Publication date: 1983-08-22
Also published as: JPS646498Y2

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、焦点深度表示装置を有する従来のカメラレン
ズの一例を示す平面図、第２図は、同じ〈従来のカメラ
レンズの他の例を示す平面図である。第３図は、この考
案を第１図のカメラレンズに適用−した実施例を示す平
面図、第４図は、同じくその距離目盛リングだけを示す
斜視図、第５図は、同じくその距離目盛リングとレンズ
鏡筒との嵌合部分を示す一部拡大断面図である。第６図
は、この考案を第２図のカメラレンズに適用した実施例
を示す平面図、第７図は、第６図■−■線に沿う断面図
、第８図は、第６図のＡ部を拡大し゛て示す断面図であ
る。１．１１・・・レンズ鏡筒固定部、２，１２・・・固定
指標、３．．１３・・・絞り目盛、４，１４・・・距離
目盛リング、４ｃ、　　４ｄ・・・ランド、５・・・距
離目盛、５ａ・・・メートル数列、５ｄ・・・フィート
数列、７・・・コイルばね、８・・・ボール、１５・・
・焦点調節リング。昌５ａ５ｂ第３図４第４図FIG. 1 is a plan view showing an example of a conventional camera lens having a depth of focus display device, and FIG. 2 is a plan view showing another example of the same conventional camera lens. Fig. 3 is a plan view showing an embodiment in which this invention is applied to the camera lens shown in Fig. 1, Fig. 4 is a perspective view showing only the distance scale ring, and Fig. 5 is the same distance scale. FIG. 3 is a partially enlarged sectional view showing a fitting portion between a ring and a lens barrel. Fig. 6 is a plan view showing an embodiment in which this invention is applied to the camera lens shown in Fig. 2, Fig. 7 is a sectional view taken along the line ■-■ in Fig. FIG. 3 is an enlarged cross-sectional view of part A; 1.11... Lens barrel fixing part, 2, 12... Fixed index, 3. ．． 13... Aperture scale, 4, 14... Distance scale ring, 4c, 4d... Land, 5... Distance scale, 5a... Metric number sequence, 5d... Feet number sequence, 7... Coil spring, 8...Ball, 15...
・Focus adjustment ring. Chang 5a5b Figure 3 4 Figure 4

Claims

[Claims for Utility Model Registration] 1. A fixed index provided on a lens barrel fixing part, and an aperture scale arranged symmetrically on both sides of the fixed index,
In a depth of focus display device rotatably attached to a lens barrel and comprising a distance scale and a ring having a distance scale provided opposite to the fixed index and the aperture scale, one semicircle of the distance scale ring; Arranging the meter number row on the circumference and the foot number row on the other semicircle, and providing restraint means at both ends of the rotation range of each number row to prevent easy transition from one number row to the other number row. Also, by rotating the distance scale ring against the restraining force of the restraining means, it is possible to switch from one number row to the other number row so that it faces the fixed index and the aperture scale. Features a depth of focus display device. 2. The depth of focus display device according to claim 1, wherein the distance scale ring is rotatably attached to the lens barrel fixing part. 3. The depth of focus display device according to claim 1, wherein the distance scale ring is rotatably attached to the focus adjustment ring. 4. A utility model in which the restraint means is composed of a ball attached to either the lens barrel fixing part or the distance scale ring and resiliently biased toward the other, and a land provided on the other. A depth of focus display device according to registered claim 2. 5. A request for utility model registration in which the restraint means is constituted by a ball attached to either a focus adjustment ring or a distance scale ring and resiliently biased toward the other, and a groove provided in the other. The depth of focus display device according to item 3.