Supplementary lens for viewing a video or computer screen
US7359128B2 · kind B2 · utility
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4References
28Claims
0Family size
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Key dates
| Filing date | Dec 17, 2003 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | May 31, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/1609
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device (5) for viewing a display screen (2), including a large-area visual medium (1) that can be placed in front of the display screen (2), characterised in that the visual medium (2) has a focal length f of at least 615 mm. The visual medium (2) is preferably a large-area lens (1) that is optimised for viewing an entire display screen (2) with both eyes (4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.