Ultra-high efficiency color mixing and color separation

摘要

Methods and apparatus for combining or separating spectral components by means of a polychromat. A polychromat is employed to combine a plurality of beams, each derived from a separate source, into a single output beam, thereby providing for definition of one or more of the intensity, color, color uniformity, divergence angle, degree of collimation, polarization, focus, or beam waist of the output beam. The combination of sources and polychromat may serve as an enhanced-privacy display and to multiplex signals of multiple spectral components. In other embodiments of the invention, a polychromat serves to disperse spectral components for spectroscopic or de-multiplexing applications.

主权项

1. A high-efficiency LCD comprising:
a. a source of polarizing backlighting; b. a plurality of LCD pixels disposed substantially in a plane; c. a polychromat disposed between the source of polarized backlighting and the plane of LCD pixels for separating the backlight into spatially distinct and spectrally overlapping components; and d. a diffuser disposed distal to the polychromat with respect to the source of polarizing backlighting.