Apparatus and related methods for the controlled illumination of a convex surface
US8419439B2 · kind B2 · utility
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14References
15Claims
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Key dates
| Filing date | Feb 7, 2012 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Feb 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B27/04
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Illumination provided to the interior of a convex surface can be controlled using a plurality of internal barriers separating light sources such as light emitting diodes. Such controlled illumination can simulate phases of the moon using logic which can be limited to yes or no Boolean decisions, thereby minimizing the complexity of required input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.