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US 5,510,936 AGranted
Apparatus for adjusting lens position
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsNobuaki Aoki, Shinsuke Kohmoto, Zenichi Okura
Life of this patent
Estimating the term…
Abstract
An apparatus for adjusting the axial position of a lens includes a lens frame which holds the lens, and a lens frame holder which holds the lens frame to allow movement in the optical axis direction. A plurality of split screw engaging portions are provided between the lens frame and the lens frame holder, so that the lens frame and the lens frame holder are capable of being fitted together without rotating and are screw engagable with the split screw engaging portions.
Claims13
An apparatus for adjusting an axial position of a lens, comprising:
- a cylindrical lens frame which holds said lens;
- a cylindrical lens frame holder which holds said lens frame;
- and
- connecting means including a plurality of segments of screw engaging portions provided on each of said lens frame and said lens frame holder, said segments of screw engaging portions of said lens frame extending outwardly in a radial direction and being separated from each other in a circumferential direction and said segments of screw engaging portions of said lens frame holder extending inwardly in a radial direction and being separated from each other in a circumferential direction by a recess, wherein said lens frame and said lens frame holder are initially engaged by inserting said segments of screw engaging portions of said lens frame into said recess, in an optical axis direction, and, after initial engagement, said screw engaging portions of said lens frame and said screw engaging portions of said lens frame holder are engaged by relative rotation between said lens frame and said lens frame holder.
1 more element
Dependencies are inferred from the claim text.