Optical radiation limiter

Details Optical radiation limiter Optical radiation limiter

1976-12-17

1978-06-06

Corbin, John K.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250352, 350 11, 350318, 350354, G02B 522

Patent

active

040933539

ABSTRACT:
An optical limiter includes two bandpass filters whose narrow passbands are at least partially overlapping at low light levels. One of the two filters is well heat-sunk while the other is not. When the input light level exceeds a threshold level, heating causes the passband of the thermally isolated filter to shift relative to the passband of the heat-sunk filter. High level light self-limits or attenuates itself by virtue of the filter passband mismatch that occurs.

REFERENCES:
patent: 2964619 (1960-12-01), Hahn et al.
patent: 2982856 (1961-05-01), Camp
patent: 3025763 (1962-03-01), Schwartz et al.
patent: 3152215 (1964-10-01), Barstow et al.
patent: 3506333 (1970-04-01), Land
patent: 3620597 (1971-11-01), Schwartz et al.
patent: 3714430 (1973-01-01), Finvold et al.
patent: 3981561 (1976-09-01), Weiss et al.
Mark et al., "Temperature Control of Bandpass of Interference Filter", Applied Optics, vol. 9, No. 10, Oct. 1970, pp. 2305-2310.

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