Optical scanner
US5757532A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Jul 8, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/125
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical scanner which causes a light beam to impinge on a photosensitive body along an optical axis. The light beam passes through a lens in a transparent parallel plate before impinging on the photosensitive body. The transparent parallel plate through which the light beam passes is positioned at a predetermined non-perpendicular angle of inclination with respect to the optical axis. This inclination of the transparent parallel plate prevents reflected light from the transparent parallel plate from being deflected off the lens and back onto the photosensitive body, and thereby prevents a formation of spurious or ghost images on the photosensitive body. Further, the inclination of the transparent parallel plate allows the image scanner to have a more compact size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.