G - Physics – 01 – J
Patent
G - Physics
01
J
73/111, 73/51, 7
G01J 1/58 (2006.01) A61N 5/00 (2006.01) G01J 3/12 (2006.01) G01J 3/14 (2006.01)
Patent
CA 1070972
ABSTRACT OF THE DISCLOSURE A biologically weighted ultraviolet radiant energy monitor provides a direct indication of the hazards to humans from the energy emanating from an optical radiation source. The radiation is first spectrally dispersed by passage through a suitable prism or diffraction grating. Portions of the dispersed radiation are mechanically masked in accordance with a predetermined biological weighting. The weighted output from the mechanical mask is then fed to a suitable detector. In the various embodiments of the ultraviolet hazard monitor, a quartz prism or diffraction grating spectrograph is utilized to spectrally disperse the incident radiation spatially and a plate coated with sodium salicylate or other suitable converter is placed in the exit plane of the spectrograph. The sodium salicylate plate fluoresces in the blue in response to incident ultraviolet radiation. The intensity of the biologically weighted blue light may then be conveniently and readily detected by a blue sensitive detector to provide an immediate readout of the potential ultraviolet radiation hazard from the unknown optical source.
262882
Bostrom Robert G.
Landry Robert J.
Peterson Richard W.
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