ILLUMINATOR AND PROJECTOR

Organization Name

Inventor(s)

ILLUMINATOR AND PROJECTOR

This abstract first appeared for US patent application 18923911 titled 'ILLUMINATOR AND PROJECTOR

Original Abstract Submitted

An illuminator according to an embodiment of the present disclosure includes a first laser light source section configured to output first light having a first wavelength band, a second laser light source section configured to output second light having a second wavelength band, a first diffusing member, a second diffusing member, and a light combiner configured to combine the first light and the second light with each other. The first diffusing member includes a first dielectric multilayer film configured to reflect the first light, and the second diffusing member includes a second dielectric multilayer film configured to reflect the second light. Assuming that an angle of incidence of a chief ray of the first light to be incident on the first diffusing member is called a first angle of incidence, and that an angle of incidence of a chief ray of the second light to be incident on the second diffusing member is called a second angle of incidence, the first dielectric multilayer film is characterized by having reflectance in the first wavelength band of the light incident thereon at the first angle of incidence is higher than reflectance in the second wavelength band of the light incident thereon at the first angle of incidence, and the second dielectric multilayer film is characterized by having reflectance in the second wavelength band of the light incident thereon at the second angle of incidence is higher than reflectance in the first wavelength band of the light incident thereon at the second angle of incidence.