Imaging device with anti-condensation provision

Details Imaging device with anti-condensation provision Imaging device with anti-condensation provision

1995-11-28

1997-12-30

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250239, H01J 4014

Patent

active

057033528

ABSTRACT:
An imaging device is provided with an image sensor element (1) for electromagnetic radiation (11) with a covering body (2) which is transparent and to the radiation (11) through which the radiation (11) can reach the sensor element (1). The imaging device is characterized in that a transparent electrically-conducting layer (3) is provided on the covering body (2) and is provided with two connection electrodes (4, 5) for heating of the covering body (2) with an electric power supplied through the electrodes (4, 5) and dissipated in the transparent layer (3). It is possible with such an imaging device to prevent condensation of a water film on the covering body (2) under conditions where the temperature of the covering body (2) lies below the dew point of the surroundings.

REFERENCES:
patent: 4957358 (1990-09-01), Terada et al.
patent: 5216250 (1993-06-01), Pellegrino et al.
patent: 5543612 (1996-08-01), Kanaya et al.
"CCD Imaging", by A.J.P. Theuwissen, Philips J. Research 48, 1994, pp. 147-158.

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