Light level sensor for detecting the level of incident light and
Light measuring unit for an electronic flash device
Light quantity control device
Light source apparatus using flash discharge tube
Light source control device, illuminaton device, and liquid...
Light-responsive electric switch
Lighting control system
Luminaire starting aid device
Manually controlable light feedback adjustment device for gas di
Means for compact spatial optical integration
Method and apparatus for controlling light intensity
Method and apparatus for measuring output of a heat lamp for an
Method for dimming a light generatng system for generating...
Multichip LED package with in-package quantitative and...
Photo-feedback drive system
Photographic illumination apparatus
Photometry power supply for automatic electronic flash
Pulsed flash tube regulator using thyristor gate control
Radiation-sensitive control circuit for driving lamp at various
Radiation-sensitive control circuit for driving lamp at various