Radiant energy – Invisible radiation responsive nonelectric signalling – Optical change type
Patent
1977-06-29
1978-12-19
Willis, Davis L.
Radiant energy
Invisible radiation responsive nonelectric signalling
Optical change type
548346, G01N 500
Patent
active
041307607
ABSTRACT:
An integrating, reusable device for monitoring exposure to actinic radiation is disclosed. The device comprises a substrate having deposited thereon at least one photochromic aziridine compound which is sealed in an oxygen barrier to stabilize the color developed by the aziridine compound in response to actinic radiation. The device includes a spectral response shaping filter to transmit only actinic radiation of the type being monitored. A color standard is also provided with which to compare the color developed by the aziridine compound.
REFERENCES:
patent: 3609165 (1971-09-01), Heine et al.
patent: 3710109 (1973-01-01), Chalkley
patent: 3787687 (1974-01-01), Trumble
Ersfeld Dean A.
Fanselow Dan L.
Alexander Cruzan
Bates Carolyn A.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Willis Davis L.
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