ILLUMINATION SYSTEM AND PROJECTION APPARATUS

摘要

An illumination system includes a light source assembly including a first excitation light source, a second excitation light source, a dichroic element, a wavelength conversion element, a first collimating element and a second collimating element. The first and second excitation light sources provide first and second excitation beams, respectively. The dichroic element is disposed between the first excitation light source and the second excitation light source. The second excitation beam is transmitted toward the first excitation light source through the dichroic element. The wavelength conversion element is disposed between the first excitation light source and the dichroic element. The wavelength conversion element converts the first and second excitation beams into a wavelength conversion beam and transmits it toward the dichroic element.

主权项

1. An illumination system comprising a light source assembly, the light source assembly comprising:
a first excitation light source, configured to provide a first excitation beam; a second excitation light source, configured to provide a second excitation beam, wherein the first excitation beam and the second excitation beam have the same color; a dichroic element, disposed between the first excitation light source and the second excitation light source, wherein the second excitation beam is transmitted toward the first excitation light source through the dichroic element; a wavelength conversion element, disposed between the first excitation light source and the dichroic element, wherein the wavelength conversion element is configured to convert the first excitation beam and the second excitation beam into a wavelength conversion beam and transmit the wavelength conversion beam toward the dichroic element; a first collimating element, disposed between the wavelength conversion element and the dichroic element; and a second collimating element, disposed between the second excitation light source and the dichroic element.