Optical device
US6356526B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Mar 10, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0909
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an optical device, first, second and third reference axes intersect at right angles with each other at a predetermined point and a first reference plane is defined by the first and second reference axes with a second reference plane defined by the second reference axis and third reference axis. Frame, functioning as a support, has first and second supporting surfaces extending along first and second reference planes extending along the first reference plane and a third supporting surface extending along the second reference plane. Sensor lens has first, second and third support arms extending radially outward from its periphery. These support arms of the sensor lens have their respective side surfaces pressed, via a leaf spring. against the first, second and third support arms, respectively, and the sensor lens is supported by the frame in such a manner that the center of the sensor lens conforms with the optical axis. Such arrangements can reliably avoid an optical axis deviation that would result from any possible thermal expansion or contraction of the sensor lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.