US5664353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and arrangement for optically representing information
Assignee: Funkwerk Systems GmbH
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Filing: 1993-11-17
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Granted: 1997-09-09
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Expires: 2013-11-17
Abstract
Abstract A method and an arrangement for optically representing information on a transparent projection surface using several projection modules and using through-light projection. The method and arrangement are both cost effective and ensures that an observer viewing even a large display of information is provided with a bright, contrast, homogeneous image. Each projection module is formed of a light source with a divergent beam radiating through a controllable light valve and a projection surface arranged behind it. The distance between the light valve and the projection surface is chosen in such a way that the image parts projected by adjacent modules border gaplessly to each other on the projection surface.
Inventors
- 👤 Bernd Brauer
- 👤 Michael Schluter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:02
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/35; G09F19/00; G09F19/12; G09F19/18
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
133 words
An arrangement for optically representing information, the arrangement comprising: a plurality of light sources producing a diverging light beam; a plurality of controllable light valve means, each of said light valve means controlling passage of said diverging light beam from a separate one of said plurality of light sources through said each light valve means to form a respective image part; a projection surface arranged on a side of said plurality of light valve means diametrically opposite said plurality of light sources, said projection surface being spaced from said plurality of light valve means by a chosen distance such that edges of said image parts formed by adjacent light valve means abut each other on said projection surface; a mask extending from each of said plurality of light sources to said projection surface.
Claim 2
Dependent Claim
133 words
An arrangement for optically representing information, the arrangement comprising: a plurality of light sources producing a diverging light beam; a plurality of controllable light valve means, each of said light valve means controlling passage of said diverging light beam from a separate one of said plurality of light sources through said each light valve means to form a respective image part; a projection surface arranged on a side of said plurality of light valve means diametrically opposite said plurality of light sources, said projection surface being spaced from said plurality of light valve means by a chosen distance such that edges of said image parts formed by adjacent light valve means abut each other on said projection surface; a mask extending from each of said plurality of light sources to said projection surface.
Claim 3
Dependent Claim
46 words
An arrangement in accordance with claim 1, wherein: said mask forms a substantially constantly diverging light passage from said light source to said projection surface, said diverging light passage being substantially equal to a divergence of said diverging light beam of each of said light sources.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-08 | 2001-03-10 | 2001-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-08 | 2005-03-10 | 2005-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-08 | 2009-03-10 | 2009-09-09 | $7700.00 | Window Closed / Lapsed |