Zoom system for an optical stereo device
US8115832B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Dec 26, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoom system (10) for an optical stereo device is provided. The zoom system (10) comprises a front plate (30) and a lens plate (60) disposed in a fixed spatial relationship and defining two optical paths within the zoom system (10). The zoom system further comprises a zoom plate (40) having two lens assemblies (45a, 45b), wherein the zoom plate (40) is disposed between the front plate (30) and the lens plate (60), and a compensation plate (50), wherein the compensation plate (50) is disposed between the zoom plate (40) and the lens plate (60). The zoom system further comprises a drive spindle (20) having a helical groove and a cam disk portion for simultaneously adjusting the position of the zoom plate (40) and the compensation plate (50) relative to the front plate (30) and the lens plate (60) in a coordinated manner, wherein the position of the zoom plate (40) is adjusted by means of the helical groove and the position of the compensation plate is adjusted by means of the cam disk portion of the drive spindle (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.