Variable aperture mechanism for cryogenic environment, and method
US8911163B1 · kind B1 · utility
6Cited by
9References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2014 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Jan 31, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device operable in a ultra-high vacuum and in a cryogenic environment. The device has bi-stable solenoid motors configured to drive a shutter assembly defining an aperture having a first shape when the motors are each disposed in the respective first position, and wherein the aperture has a second shape when the motors are each disposed in the respective second position. Actuators responsive to the motors are thermally isolated from the cryogenic shutter assembly except when the motors position the shutter assembly to change a shape of the aperture. The device is suitable for use in FLIR and other thermally sensitive devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.