POLARIZED PROJECTION DEVICE AND POLARIZED PROJECTION SYSTEM USING THE SAME

摘要

A polarized projection device includes a light source, a light modulator, and a lens module. The light source is configured for providing a light beam. The light modulator is configured for modulating the light beam into an image. The lens module is configured for converting the image into a polarized image, and includes a polarized prism group, a first polarized module, a second polarized module, a lens, and a half wave plate. The polarized prism group has an incident surface, a light-emitting surface, a first relay surface, and a second relay surface. The image enters the polarized prism group from the incident surface. The first (second) polarized module is disposed off axis at the first (second) relay surface and includes a first (second) reflector and a first (second) quarter wave plate. The lens is disposed at the light-emitting surface. The half wave plate is partially disposed on the lens.

主权项

1. A polarized projection device, comprising:
a light source for providing a light beam; a light modulator for modulating the light beam into an image; and a lens module for converting the image into a polarized image, the lens module comprising:
a polarized prism group having an incident surface, a light-emitting surface, a first relay surface, and a second relay surface, wherein the image enters the polarized prism group from the incident surface;a first polarized module disposed off axis at the first relay surface, the first polarized module comprising:
a first reflector; anda first quarter wave plate disposed between the first reflector and the polarized prism group;a second polarized module disposed off axis at the second relay surface, the second polarized module comprising:
a second reflector; anda second quarter wave plate disposed between the second reflector and the polarized prism group;a lens disposed at the light-emitting surface; anda half wave plate partially disposed on the lens.