Optical processing structure for digital optical processing projection device

Abstract

The DLP projecting apparatus comprises multi digital micro lens devices. Said optic processing structure comprises: a spectrum architecture, a reflection architecture and a beam-combining architecture; the spectrum architecture uses the beam splitter and color wheel to splitting the beams; the reflection architecture comprises multi reflection prisms corresponding to said multi digital micro lens devices; the beam-combining architecture is composed of two triangle prisms.

Description

technical field [0001] The present invention relates to a light processing structure for a digital light processing (DLP) projection device, and more particularly to a light processing structure for a DLP projection device with a multiple digital micromirror device (DMD) architecture. Background technique [0002] figure 1 It is a schematic diagram of a digital optical processing projection device in Taiwan Patent Application No. 93101928. The case was filed by the applicant of this case on January 29, 2004. The digital optical processing projection device is mainly composed of a coupling module (Coupling Module) 200, a light source 300, a light splitting module (Splitting Module) 400, three digital micromirror devices 500R, 500G, 500B, and a projection objective lens (Project Lens) 600. . [0003] The light source 300 emits light W to the light splitting module 400 through an integration rod (Integration Rod) 310 . The light splitting module 400 splits the light W into ...

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Problems solved by technology

Because this system uses a beam splitting prism for both light splitting and light combining, the prism is larger in size and heavier in weight, and the back focus of the projection objective lens required is also longer, making the design of the lens more difficult.

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