Compact collimating apparatus

Details Compact collimating apparatus Compact collimating apparatus

1999-01-28

2000-06-13

Epps, Georgia

Optical: systems and elements

Collimating of light beam

359630, 359631, 359633, 359 15, G02B 2730, G02B 2714, G02B 532

Patent

active

060756519

ABSTRACT:
A compact, lightweight, multi-wavelength display system which can be used as a collimating eyepiece is provided. The system utilizes a polarization selective optical element, or PS element, that reflects one linear polarization state while transmitting radiation of the orthogonal linear polarization state. The PS element is used in combination with a quarter wave plate and an optical element, the optical element including a partially reflective surface. The optical element may either be a single element or an optical doublet. In the latter configuration, the partially reflective surface is at the interface between the two singlets that comprise the doublet. The system also includes an image source that either alone, or in combination with other optical elements, produces circularly polarized light of the desired rotary sense.

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Product Literatue for "3M.TM. Dual Brightness Enhancement Film (DEBF)," (.COPYRGT.1996 3M Corporation) 6 pages.

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