Vibration compensation device for binocular
US5754339A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1996 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Aug 21, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/646
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wedge prism unit is positioned on the optical axes of the objective optical systems of two telescope systems of a binocular. The wedge prism unit includes a front wedge prism element and a rear wedge prism element that are oppositely oriented. When rotated by equal amounts in opposite directions, the wedge prism elements deflect incident light in a direction perpendicular to the rotation axis. The wedge prism unit is placed along the objective optical axes of the binocular, oriented to deflect the visual field to compensate for vibration. A control circuit controls a single motor according to a vibration sensor to deflect the visual field in a direction opposite to the vibration. The rotation axis is either within or outside of an imaginary plane containing both of the optical axes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.