Photorestrictive device controller and control method therefor
US5774259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1996 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Sep 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K15/046
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A photostrictive device controller and a photostrictive device control method, which can produce a fast response without causing a sharp temperature rise when driving the photostrictive device. The photostrictive device controller comprises: a light source 2 for applying light to the photostrictive device 1 that, upon receiving light, produces a photostrictive effect; an illumination optics 3 for introducing light from the light source 2 onto the photostrictive device 1; and a control device 4 for controlling the energy density of light applied to the photostrictive device 1. The control device 4 of the controller controls the illumination optics device 3 to lower, at a point close to where the photostrictive effect of the photostrictive device 1 is saturated, the energy density of the irradiated light to a level at which the elongation caused by heat can be ignored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.