UV-A, UV-B discrimination sensor

Details UV-A, UV-B discrimination sensor UV-A, UV-B discrimination sensor

1994-02-09

1995-02-07

Hannaher, Constantine

Radiant energy

Invisible radiation responsive nonelectric signalling

Optical change type

G01J 548

Patent

active

053877985

ABSTRACT:
A UV-A, UV-B discriminating sensor provided with a photochromic compound or photochromic composition as the sensor portion, the photochromic compound or photochromic composition coloring under exposure to UV of wavelength greater than or equal to 280 nm or less than or equal to 400 nm, and wherein at least a portion of the photochromic layer is covered with a layer containing a pigment which absorbs UV of wavelength less than 320 nm, or with a layer containing a pigment which absorbs UV of a wave length greater than or equal to 320 nm but less than or equal to or equal to 400 nm.

REFERENCES:
patent: 4130760 (1978-12-01), Fanselow et al.
patent: 4829187 (1989-05-01), Tomita et al.
patent: 5028792 (1991-07-01), Mullis
patent: 5296275 (1994-03-01), Goman et al.
"Reusable ultraviolet monitors: Design, characteristics, and efficacy", Dan L. Fanselow et al., Journal of the American Academy of Dermatology, 9(5):714-723 (1983).

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