LIGHT SOURCE DEVICE, AND IMAGE PROJECTION APPARATUS EMPLOYING LIGHT SOURCE DEVICE

摘要

A light source device includes a first light source to emit first light having a first wavelength range; a wavelength convertor, disposed on an optical path of the first light, to receive the first light to emit light having other wavelength range different from the first wavelength range; a cyclical movement unit to cyclically move the wavelength convertor while crossing the optical path of the first light; optical parts to define an optical path of the first light, and an optical path of the light emitted from the wavelength convertor; a detector to detect a cyclic movement condition of the cyclical movement unit; and a received light quantity reducing unit to reduce light quantity of the first light received by the wavelength convertor when a cyclic movement condition detected by the detector satisfies an abnormal condition while outputting the first light or the light having other wavelength range to outside.

主权项

1. A light source device, comprising:
a first light source to emit first light having a first wavelength range; a wavelength convertor, disposed on an optical path of the first light emitted from the first light source, to receive the first light having the first wavelength range from the first light source to emit light having other wavelength range different from the first wavelength range of the first light; a cyclical movement unit to cyclically move the wavelength convertor while crossing the optical path of the first light emitted from the first light source; optical parts to define an optical path of the first light emitted from the first light source, and an optical path of the light emitted from the wavelength convertor; a detector to detect a cyclic movement condition of the cyclical movement unit; and a received light quantity reducing unit to reduce light quantity of the first light received by the wavelength convertor when a cyclic movement condition detected by the detector satisfies a given abnormal condition while outputting the first light emitted from the first light source having the first wavelength range or the light having other wavelength range emitted from the wavelength convertor to outside the light source device.