Optical apparatus with improved lens mounting device
US5331343A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1991 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Nov 12, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An optical apparatus includes a laser beam emitter for outputting a laser beam modulated in accordance with image information, and a lens unit resting on a lens mount. The lens unit includes, all formed integral with one another, an effective lens portion, a cylindrical portion surrounding a side surface of the effective lens portion, and projections extending from peripheral positions of the cylindrical portion. The lens mount includes a holder for holding the cylindrical portion of the lens unit to be rotatable and axially slidable on an optical axis of the laser beam, and a groove formed in the bottom of the holder for receiving the projection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.