Temperature control device for liquid crystal optical shutter

Details Temperature control device for liquid crystal optical shutter Temperature control device for liquid crystal optical shutter

1986-10-14

1988-01-26

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307310, G02F 113, H03K 326

Patent

active

047213639

ABSTRACT:
a temperature control device for a liquid crystal optical shutter allows information writing on a photosensitive body such that a plurality of microshutters are opened/closed to selectively transmit light from a light source onto the surface of the photosensitive body. The ambient temperature near the liquid crystal optical shutter is detected by a thermistor. The temperature control device includes a first temperature controller for causing a thermistor to detect the ambient temperature near the liquid crystal optical shutter and for variably controlling an energization ratio of the heater for heating the liquid crystal optical shutter, and a second temperature controller for controlling energization of the heater at an energization ratio different from that of the first temperature controller.

REFERENCES:
patent: 4128311 (1978-12-01), Smith et al.
patent: 4386836 (1983-06-01), Aoki et al.
patent: 4493984 (1985-01-01), Yamauchi
patent: 4682857 (1987-07-01), Tang
patent: 4687956 (1987-08-01), Itoh et al.

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