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We present a high light efficiency and low power consumption projection engine for mobile device applications. Efficient light coupling and color mixing, high contrast reflective polarization & recycling, and precision molded optics were combined to achieve this high performance LED/LCOS‐based system having a 10.5 mm light engine thickness and demonstrating 8.0 lm/W.

A simple method of measuring the phase-modulation properties of liquid-crystal televisions (LCTV's) that vary with the driving gray-scale level is presented. The theoretical derivation of the method is described. Compared with previous methods of measuring the phase shifts of LCTV's, this technique is noninterferometric and very simple. The experimental results of a LCTV are shown.