Polarization control system
US5191387A · kind A · utility
23Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Jan 3, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0136
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polarization is controlled by introducing a phase difference in an incident light at first, then introducing a phase difference by 45 degrees, and then the polarized light is rotated. The light is passed through an analyzer so arranged that the direction of the transmission axis of the analyzer does not coincide with the principal axes of the means for introducing the phase differences, thereby to convert the polarized condition into a light volume which is used to control the phase differences and the rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.