Beam receiving position adjusting device
US5559639A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1993 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Apr 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0912
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device including a polarizing beam splitter by which an incident luminous flux is split into a first luminous flux radiated onto a first photo sensor and a second luminous flux radiated onto a second photo sensor, and an adjusting mechanism provided for adjusting a position of one of the first and second luminous fluxes. The optical axis of the first luminous flux is coincident with that of the incident luminous flux. The optical axis of the second luminous flux is not parallel to the first luminous flux. By moving the beam splitter along the optical axis of the first luminous flux, the beam receiving position of the second photo sensor, onto which the second luminous flux is radiated, is changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.