Optical cell
US5838482A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Nov 6, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/172
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved optical cell (light valve) of the type which includes a liquid suspension of particles orientable by an electrical field to vary the amount of luminous transmission is described. The cell comprises two adjacent plates held apart by a spacer to define a space occupied by the suspension. The cell further includes a first opening which passes through the spacer into the space to permit introduction of the suspension into the cell and a second opening which passes through the spacer at or near the furthest possible distance permitted by the configuration of the cell from the first opening, whereby the introduction of the suspension displaces through the second opening any fluid such as air which is initially present in the space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.