IRRADIANCE MONITORING IN PROJECTOR SYSTEMS
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Feb 6, 2025
app pub date -
Dec 6, 2022
filing date -
Dec 6, 2022
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Abstract
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.
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