Patent · US Expired

Lens holding structure

US5555480A · kind A · utility

11Cited by

14References

29Claims

0Family size

Assignee

Asahi Kogaku Kogyo Kabushiki Kaisha · JP

Inventors

Hitoshi Tanaka · Tokyo, JP
Norio Sato · Nagoya, JP

Key dates

Filing date	Jul 12, 1994
Grant date	Sep 10, 1996
Priority date	—
Expiry date	Jul 12, 2014

Classification

Technology area (CPC G)Physics
CPC primaryG02B7/026
WIPO fieldOptics
WIPO sectorInstruments

Abstract

In a camera lens group having both glass and plastic lenses mounted in a lens frame, where at least one of the lenses is movable along the optical axis, a spacing member and a resiliently deformable member are each arranged in an interval between lenses in the lens group. The resiliently deformable member biases one of the lenses away from the spacing member, and the spacing member reduces the range of possible movement of the movable lens.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.