Radiant energy – Invisible radiant energy responsive electric signalling – Ultraviolet light responsive means
Patent
1985-04-11
1987-11-03
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
Ultraviolet light responsive means
G01J 142
Patent
active
047045353
ABSTRACT:
An ultraviolet radiation dosimeter is to be employed by a person the skin of whom has been protected by a substance tending to inhibit the transmission of the radiation therethrough and which substance has a predetermined value of inhibition. Disposed to the radiation is a sensor that develops a signal in correspondence to the level of the radiation. Responding to that signal is a processor which accumulates a representation of the magnitude of the signal as effectively integrated with an elapsed time of exposure of the sensor to the radiation. An indication of the degree of the accumulation is yielded in response to the representation of the magnitude. The value of inhibition is used in order selectively to adjust in correspondence thereto the determination of the degree at which the indication is yielded. Both analog and digital circuitry are presented, along with variations and additions such as also adjusting response in accordance with the skin type of the user.
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The Principles of Optics, pp. 389-403, 406-408, and 521-524, "Miscellaneous Optical Materials".
Leber Leland C.
Tenhulzen Neal L.
Drake Hugh H.
Howell Janice A.
Porte David P.
Teledyne Industries Inc.
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