JPH0363110U

JPH0363110U -

Info

Publication number: JPH0363110U
Application number: JP12416389U
Authority: JP
Priority date: 1989-10-24
Filing date: 1989-10-24
Publication date: 1991-06-20
Anticipated expiration: 2004-10-24
Also published as: JP2554289Y2

Description

[Brief explanation of the drawing]

第１図は本考案を適用したＣＣＴＶカメラ用レ
ンズ鏡胴の一部側断面図、第２図はその要部の側
断面図、第３図は第２図の要部の正面図であり、
第４図は第２図の要部の拡大説明図である。１……固定鏡胴、２……継環、３……鏡筒、４
……操作環、５……飾枠、６……前群レンズ枠、
７……後群レンズ枠、８……押え環、９……板バ
ネ（弾性部材）、１０……回り止めビス、１３…
…操作面（斜面又はカム面）、１４……当接部（
球状突起部）。 FIG. 1 is a partial side sectional view of a CCTV camera lens barrel to which the present invention is applied, FIG. 2 is a side sectional view of the main part thereof, and FIG. 3 is a front view of the main part of FIG.
FIG. 4 is an enlarged explanatory view of the main part of FIG. 2. 1... fixed lens barrel, 2... joint ring, 3... lens barrel, 4
...Operation ring, 5...Decorative frame, 6...Front group lens frame,
7... Rear group lens frame, 8... Holding ring, 9... Leaf spring (elastic member), 10... Stopping screw, 13...
...Operation surface (slope or cam surface), 14...Abutment part (
bulbous protrusion).

Claims

[Claims for Utility Model Registration] (1) A fixed body fixed to the main body of an optical device, a movable body provided movably along the optical axis with respect to the fixed body, and between the fixed body and the movable body. An optical system having a mechanism for moving an optical system along an optical axis, which is composed of an operation ring that moves a movable body relative to a fixed body by intervening therebetween, and an elastic member that elastically brings the movable body and the operation ring into close contact with each other. In the lens barrel for equipment, the operation ring 4 is rotatably provided on the fixed body side, and the end face of the operation ring 4 is provided in contact with the end face of the lens barrel 3 on the movable body side holding the optical system; An operation surface having a lead angle that increases or decreases in accordance with a predetermined rotation angle is provided on the one end surface side, and a contact portion that abuts the operation surface is provided on the other end surface side, so that the operation ring 4 can be rotated. A focusing device for a lens barrel for an optical instrument, characterized in that the lens barrel 3 is configured to move forward and backward along the optical axis. (2) Scope of Utility Model Registration In the device described in claim (1), a contact portion consisting of a spherical protrusion with a rounded apex is provided on the operating ring 4 side, and an inclined surface having a lead angle on the lens barrel 3 side. Alternatively, a focusing device for a lens barrel for an optical device, characterized in that an operation surface consisting of a cam surface is provided. (3) In the device described in claim (1) of the utility model registration, an operation surface consisting of a sloped surface or a cam surface having a lead angle is provided on the operation ring 4 side, and a spherical shape with a rounded apex is provided on the lens barrel 3 side. A focusing device for a lens barrel for an optical device, characterized in that a contact portion consisting of a protrusion is provided. (4) A fixed body fixed to the optical device main body, a movable body provided movably along the optical axis with respect to the fixed body, and a movable body provided between the fixed body and the movable body and relative to the fixed body. In the lens barrel for an optical instrument, the lens barrel has a mechanism for moving an optical system along an optical axis, which includes an operating ring for moving a moving body and an elastic member for elastically bringing the moving body and the operating ring into close contact with each other. The operating ring 4 is rotatably provided on the movable body side, and the end face of the operating ring 4 is provided in contact with the end face of the lens barrel 1 on the fixed body side, while a ring is provided on the one end face side corresponding to a predetermined rotation angle. An operating surface having a lead angle that increases or decreases is provided, and a contact portion that abuts the operating surface is provided on the other end side, so that by rotating the operating ring 4, the lens barrel 3 on the movable body side is moved along the optical axis. A focusing device for a lens barrel for an optical instrument, characterized in that the focusing device is configured to move forward and backward while moving forward and backward. (5) In the device described in claim (4) of the utility model registration, a contact portion consisting of a spherical protrusion with a rounded apex is provided on the operating ring 4 side, and a slope or a cam with a lead angle is provided on the fixed body side. A focusing device for a lens barrel for an optical instrument, characterized in that an operation surface consisting of a surface is provided. (6) In the device described in claim (4) of the utility model registration, an operating surface consisting of a sloped surface or a cam surface having a lead angle is provided on the operating ring 4 side, and a spherical protrusion with a rounded apex is provided on the fixed body side. 1. A focusing device for a lens barrel for an optical instrument, characterized in that a contact portion is provided. (7) Scope of claims for utility model registration (1), (2), (3), (4)
), (5), or (6), wherein the operating surface comprises a slope or cam surface having at least two lead angles, and the contact portion has at least the same number of slopes or cam surfaces as the slope or cam surface. A focusing device for a lens barrel for optical equipment, characterized by comprising a spherical protrusion with a rounded apex.