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US 7,929,400 B2Granted
Optical sound track scanner system
AssigneeLaser Interface Photonics I/S
InventorHenrik Lausen
Life of this patent
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Abstract
The present invention relates to an optical scanner system for scanning of an optical sound track with a beam of light, comprising a light emitter for emission of a light beam, a device for scanning the light beam across an optical sound track, the light beam forming a scanning spot on the optical sound track, an optical detector for detection of the light beam upon interaction of the light beam with the optical sound track and generating an electronic signal representing the sound recorded in the optical sound track.
Claims23
An optical sound track scanner system, comprising:
- a light emitter configured to emit a light beam;
- a scanner configured to scan the light beam across an optical sound track, the light beam forming a scanning spot on the optical sound track;
- an optical detector configured to detect the light beam upon interaction of the light beam with the optical sound track and to generate generating an electronic signal representing the sound recorded in the optical sound track;
- and
- Fourier optics positioned between the optical sound track and the detector so that the detector resides in the Fourier plane of the optical sound track.
2 more elements
Dependencies are inferred from the claim text.