Optical length adjusting device
US6081363A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1998 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Nov 24, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/193
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical length adjusting device provides different optical length for different lenses in a multi-resolution scanner. The optical length adjusting device includes a focus module for focusing the optical image on an image sensor, a first light reflecting device for directing the light from an object to the focus module, a first carrier for fixing the first light reflecting device, a second carrier for fixing the focus module, and a driving module for moving the first and/or second carriers to change the distance between them. Since the distance between the focus module and the first light reflecting module can be adjusted, the light from the object can be guided to the focus module via the same optical path for different resolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.