JPS61190515U

JPS61190515U -

Info

Publication number: JPS61190515U
Application number: JP7488685U
Authority: JP
Priority date: 1985-05-20
Filing date: 1985-05-20
Publication date: 1986-11-27

Description

[Brief explanation of drawings]

第１図は本考案に係るズームレンズ鏡筒の一実
施例を示す分解斜視図、第２図は第１図に示した
ズームレンズ鏡筒における保持枠２０の詳細な構
造を示す斜視図、第３図は偏心ピンの斜視図であ
る。１２……ズーム鏡筒、２０，４０，５０……保
持枠、３０……カム筒、２０４……レンズ保持部
材、２０８，４０８……カム従動子、２１０……
円弧状外周片、２１２，４１２……偏心ピン。 1 is an exploded perspective view showing an embodiment of the zoom lens barrel according to the present invention, FIG. 2 is a perspective view showing the detailed structure of the holding frame 20 in the zoom lens barrel shown in FIG. FIG. 3 is a perspective view of the eccentric pin. 12... Zoom lens barrel, 20, 40, 50... Holding frame, 30... Cam tube, 204... Lens holding member, 208, 408... Cam follower, 210...
Arc-shaped outer peripheral piece, 212, 412...Eccentric pin.

Claims

[Scope of utility model registration request]

In a zoom lens barrel that moves the entire optical system consisting of a lens group including a movable lens and moves the movable lens to change the lens spacing of the lens group to change the magnification of the optical system, the optical axis of the optical system A cylindrical body in which a linear guide groove is formed in the direction, a cam cylinder in which a cam groove is formed in the circumferential direction, a lens holding member formed in a ring shape and holding the movable lens, and a base end thereof that holds the movable lens. a holding frame consisting of a plurality of arc-shaped outer peripheral pieces integrally formed with the outer periphery of the holding member; a holding frame that projects outward in the radial direction of the holding frame and fits into the guide groove of the cylinder body and the cam groove of the cam cylinder; A cam follower that moves the holding frame in the optical axis direction as the cam cylinder rotates, and a cam follower that is pivotally supported by the outer peripheral piece of the holding frame, and whose eccentric shaft part fits into a hole formed in the lens holding member of the holding frame. 1. A lens barrel for a zoom lens, characterized in that the optical axis of the movable lens is adjusted by rotating the eccentric pin.