摘要：

A photoactivated field effect liquid crystal projection display device has been built and tested. The device displays high resolution dynamic color symbology by means of the optical birefringence of the liquid crystal. The colors that can be displayed simultaneously are: white (with gray scale), blue, green, yellow, and magneta on a dark field. The imaging light power required to excite the device is from 30-120 microwatts/sq cm at 525 nm and the resolution obtained at an MTF of 50% is 40 lines/mm. The basic construction of the device is similar to the dynamic scattering photoactivated liquid crystal light valve.

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