ILLUMINATION SYSTEM AND PROJECTION APPARATUS

摘要

An illumination system includes a coherent light source, a first light-combining element, an optical wavelength conversion module, and a first auxiliary light source. The coherent light source emits a coherent light beam. The first light-combining element is disposed on a transmission path of the coherent light beam. The light wavelength conversion module is disposed on a transmission path of the coherent light beam transmitted from the first light-combining element and converts the coherent light beam into a first converted light beam, and reflects the first converted light beam back to the first light-combining element. The first auxiliary light source emits a first auxiliary light beam which is transmitted to the first light-combining element along the transmission path of the coherent light beam. The first light-combining element combines the first auxiliary light beam and the first converted light beam. A projection apparatus is also provided.

主权项

1. An illumination system, comprising:
a coherent light source adapted to emit a coherent light beam; a first light-combining element disposed on a transmission path of the coherent light beam; an optical wavelength conversion module disposed on the transmission path of the coherent light beam transmitted from the first light-combining element, the first light-combining element located between the coherent light source and the optical wavelength conversion module, the optical wavelength conversion module converting the coherent light beam into a first converted light beam and reflecting the first converted light beam back to the first light-combining element, a wavelength of the first converted light beam is different from a wavelength of the coherent light beam; and a first auxiliary light source adapted to emit a first auxiliary light beam, a wavelength of the first auxiliary light beam is different from the wavelength of the coherent light beam, wherein the first auxiliary light beam is transmitted to the first light-combining element along the transmission path of the coherent light beam, and the first light-combining element combines the first auxiliary light beam and the first converted light beam reflected from the optical wavelength conversion module.