LAMP FOR LIGHT SOURCE, AND PROJECTOR

摘要

Provided are a lamp for light sources, which has reduced power consumption while ensuring constant luminance, and a projector using such lamp. The lamp (1) for light sources collects light from a light source by a lens and projects the light. The lamp is composed of a plurality of light emitting diodes (32, 62) wherein light sources (3, 6) are arranged, and the light sources (3, 6) are driven by modulating and controlling the pulse width of the light emitting diodes (32, 62). Thus, compared with the constitution wherein the light sources (3, 6) are analog-controlled, power consumption of the lamp is reduced while ensuring constant luminance (lm).