IRRADIANCE MONITORING IN PROJECTOR SYSTEMS

A projector system includes a monitor that measures irradiance of projected light. The monitor direct light from a light source that is sampled in an optical path of the projector onto a sensor. The detector also receives light from a calibration light source. A processor is configured to process an...

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Bibliographic Details
Main Authors BALLESTAD, Anders, GYSELINCK, Stefan
Format Patent
LanguageEnglish
French
German
Published 16.10.2024
Subjects
ACCESSORIES THEREFOR
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:A projector system includes a monitor that measures irradiance of projected light. The monitor direct light from a light source that is sampled in an optical path of the projector onto a sensor. The detector also receives light from a calibration light source. A processor is configured to process an output signal of the sensor to determine irradiance of the projected light. The processing may comprise applying a colour transform and lumped coefficients. The projector system may be configured to take corrective action if the monitored irradiance exceeds a threshold. One application of the disclosed apparatus and methods is improving safety.
Bibliography:Application Number: EP20220834857