Process and device for the production of a telecentric light beam and use of the process
US4444457A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 1982 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | May 24, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a device for the production of a telecentric light beam which is to be deflected over a defined region an incident light beam impinges upon a rotating plane mirror. The light beam reflected thereby reaches the outlet of the device by way of a further co-rotating parallel plane mirror as a telecentric light beam. There is thus obtained by simple optical means a deflection over a region which is considerable in comparison with the dimensions of the device, and the shifting of the deflected light beam occurs according to a simple mathematical function, more especially a sine function. This simple mathematical relationship of a rotary angle and a displacement of the light beam enables an especially simple evaluation of measurement data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.