Reflective type silicon-based liquid crystal microdisplay optical engine

Abstract

The invention provides a micro display optical engine which comprises a light source, a polarizer, light gathering illuminating components, a first and second filter polarizer converting slices, metal grating polarizing separating / merging lens, a compensating glass board, two-color separating / merging lens, a wide-bandlambada / 4 wave slice, a silicon base liquid crystal chip, a detecting polarizer and a projecting lens. Wherein the two-color separating / merging lens includes base glass board, two-color separating / merging light film and a protecting glass board; the wide-band lambada / 4 wave slice includes red, green and blue three color wide-bandlambada / 4 wave slices. The invention increases a protecting glass board based on the dual way two-color separating / merging lens to ensure the light paths balance of the red, green and blue imaging light channels.

Description

technical field [0001] The invention provides a reflective silicon-based liquid crystal micro-display optical engine, precisely, it is an optical path for realizing red (R), green (G) and blue (B) three-way imaging light channels in a glass medium Completely balanced, it can achieve the best correction of aberrations, and the lateral image movement generated by the three imaging optical channels on the imaging surface is completely synchronized, thus ensuring the red (R), green (G) and blue (B) three primary color image images The invention relates to an optical engine technical scheme for obtaining high-definition color images by accurately overlapping pixels, and belongs to the field of micro-display technology. Background technique [0002] At present, the development trend of digital display technology is based on the premise of high-definition and large-screen display. Compared with other flat panel display technologies, the liquid crystal-on-silicon (Lcos) micro-displ...

AI Technical Summary

Problems solved by technology

However, in the existing dichroic light splitting / combining mirrors, only the substrate glass

This brings about two important problems: one is that the light will produce parallel lateral displacement when it passes through the parallel plane glass plate installed obliquely (only normal incidence will not cause lateral displacement), if it is divergent light or convergent light (this is The imaging optical path that is often used), the lateral displacement and the angle are linear in the small angle range, and the lateral displacement and the angle are nonlinear in the large angle range

Therefore, for the optical engines involved in the above documents, there are still disadvantages such as low resolution of color images, poor definition, low contrast, etc.

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