Light-source lamp and projector
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsAtsushi Kawachi, Hideaki Emoto, Katsuhiko Toda
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Abstract
An object is to provide a light-source lamp capable of reducing consumption power while ensuring a certain luminance level and a projector using the light-source lamp. This light-source lamp 1 gathers light from a light source at a lens for emission. The light sources 3, 6 are formed of a plurality of arranged light-emitting diodes 32, 62, and the light sources 3, 6 are driven with pulse-width modulation control of the light-emitting diodes 32, 62. With this, compared with a configuration in which the light sources 3, 6 are subjected to analog control, consumption power of the lamp can be reduced while ensuring a certain luminance level lm.
Claims9
A light-source lamp that gathers light from a light source at a lens for emission, comprising:
- a plurality of light-emitting diodes that forms the light source;
- and
- a control unit that drives the light source by controlling the plurality of light-emitting diodes with pulse-width modulation control.
Dependencies are inferred from the claim text.