JPH0359774U

JPH0359774U -

Info

Publication number: JPH0359774U
Application number: JP12024189U
Authority: JP
Priority date: 1989-10-14
Filing date: 1989-10-14
Publication date: 1991-06-12
Anticipated expiration: 2004-10-14
Also published as: JPH0728777Y2

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示したものであつて
、第１図は視度調整装置の分解斜視図、第２図は
視度調整装置の組立て完了状態の側面図、第３図
は第２図の−矢視での断面図、第４図は第２
図の−矢視での断面図、第５図は分割円筒の
結合構造を示す拡大断面図、第６図は分割円筒と
回転リングの結合構造を示す拡大断面図、第７図
はクリツク機構を示す拡大側面図、第８図はポー
タブルビデオカメラ全体の斜視図である。また、図面に用いられている符号において、５
……ビユーフアインダー、１０……視度調整装置
、１１……レンズ、１４……鏡筒、１８……直線
溝、２１……被ガイド突起、２３……回転円筒、
２４，２５……分割円筒、２６……ラセン溝、３
３……弾性体、ａ……光軸方向、である。 The drawings show one embodiment of the present invention, in which Fig. 1 is an exploded perspective view of the diopter adjustment device, Fig. 2 is a side view of the diopter adjustment device in an assembled state, and Fig. A sectional view taken in the - arrow direction in Figure 2, and Figure 4 is a sectional view taken in the - arrow direction.
5 is an enlarged sectional view showing the joint structure of the divided cylinders, FIG. 6 is an enlarged sectional view showing the joint structure of the divided cylinders and the rotating ring, and FIG. The enlarged side view shown in FIG. 8 is a perspective view of the entire portable video camera. In addition, in the symbols used in the drawings, 5
... Viewfinder, 10 ... Diopter adjustment device, 11 ... Lens, 14 ... Lens barrel, 18 ... Straight groove, 21 ... Guided projection, 23 ... Rotating cylinder,
24, 25...Divided cylinder, 26...Spiral groove, 3
3...Elastic body, a...Optical axis direction.

Claims

[Claims for Utility Model Registration] A lens barrel, a diopter adjustment lens disposed inside the lens barrel, a rotating cylinder rotatably disposed outside the lens barrel, and a helical shape on the rotating cylinder. A helical groove provided in the lens barrel and a straight groove provided in the lens barrel parallel to the optical axis direction guide the guided protrusion provided on the outer periphery of the lens, and the rotation of the rotating cylinder guides the guided protrusion provided in the outer circumference of the lens. and a guide mechanism for adjusting the movement of the lens in the optical axis direction, the rotating cylinder is composed of a plurality of divided cylinders divided in the circumferential direction, and a cylindrical elastic body is used to move the plurality of divided cylinders from the outer periphery into the cylinder. A diopter adjustment device for a viewfinder, which is characterized by being held in a fixed position.