Compact electronic viewfinder
US7206134B2 · kind B2 · utility
245Cited by
19References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2005 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Feb 3, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic viewfinder with a reflective microdisplay and associated optical elements in a design that utilizes one or more folded optical paths to achieve a compact size and volume that may have a dimension of less than 10 millimeters per side. Moreover, the optical design may have an effective focal length that is greater than the spacing of the optical elements from the microdisplay. Various embodiments include a pancake window arrangement with reflective surfaces that are spaced apart from each other and cube beamsplitter eyepieces with folded paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.