HIGH EFFICIENCY LASER MODULATION

To provide a high efficiency laser modulation for a scanning laser projector.SOLUTION: A scanning laser projector (100) drives laser light sources with waveforms for higher efficiency. Optical light power values for pixels are mapped to amplitude/duration pairs. Laser diodes are driven with electric...

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Bibliographische Detailangaben
Hauptverfasser:	ROBERT JAMES JACKSON, CHRISTOPHER BRIAN ADKINS, SCOTT WOLTMAN
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ACCESSORIES THEREFOR ADVERTISING APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION BASIC ELECTRIC ELEMENTS CINEMATOGRAPHY CRYPTOGRAPHY DEVICES USING STIMULATED EMISSION DISPLAY EDUCATION ELECTRICITY ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS SEALS
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Beschreibung
Zusammenfassung:	To provide a high efficiency laser modulation for a scanning laser projector.SOLUTION: A scanning laser projector (100) drives laser light sources with waveforms for higher efficiency. Optical light power values for pixels are mapped to amplitude/duration pairs. Laser diodes are driven with electrical current having the amplitude for time period specified by the duration. For increasing optical light power values, amplitude values are increased, and then durations are increased.SELECTED DRAWING: Figure 1 【課題】走査式レーザプロジェクタに対する高効率のレーザ変調方式を提供する。【解決手段】走査式レーザプロジェクタ（１００）は高効率のための波形でレーザ光源を駆動する。画素に関する光出力値が振幅／継続時間の対にマッピングされる。レーザダイオードは、継続時間によって規定される間、その振幅を有する電流で駆動される。光出力値を増大させるため、振幅値を増やした後、継続時間を増加させる。【選択図】図１