Polarization conversion system, illumination system, and projector
AssigneeSeiko Epson Corporation
InventorYoshitaka Itoh
Life of this patent
Estimating the term…
Abstract
A polarization conversion system comprises a polarized light selective reflector that divides incident unpolarized light into first and second types of polarized light, transmits the first type of polarized light and reflects the second type of polarized light, a relay optical system that relays an incident light beam onto the polarized light selective reflector, a polarized light reflector, disposed on an optical path of a reflected light beam reflected by the polarized light selective reflector, that reflect the reflected light beam back to the polarized light selective reflector while converting the second type of polarized light to polarized light of the first type.
Claims22
A polarization conversion system that converts unpolarized light to light of a specific polarization, comprising:
- a polarized light selective reflector that separates incident unpolarized light into first and second types of polarized light, transmits the first type of polarized light and reflects the second type of polarized light,
- a relay optical system that relays a given incident light beam onto the polarized light selective reflector, and
- a polarized light reflector, disposed at a selected position on an optical path of a reflected light beam reflected by the polarized light selective reflector, that reflects the reflected light beam back to the polarized light selective reflector while converting the second type of polarized light to polarized light of the first type.
Dependencies are inferred from the claim text.