Radiant energy – Infrared-to-visible imaging
Patent
1986-08-22
1988-07-26
Howell, Janice A.
Radiant energy
Infrared-to-visible imaging
250332, 25037001, 356 731, G01N 2184, G01N 2100
Patent
active
047602570
ABSTRACT:
Apparatus is provided for measuring the numerical apertures of an optical fiber in the infrared region. The optical fiber is appropriately mounted in accordance with conventional testing standards. Infrared energy is transmitted through the optical fiber. At a predetermined distance from the end of the optical fiber, a conversion screen can be provided for transforming the emitted infrared energy into a lesser wavelength of energy. The energy distribution can be recorded with a detector compatible with the lesser wavelength energy whereby the numerical aperture can be computed from the recorded data.
REFERENCES:
patent: 4320462 (1982-03-01), Lund et al.
P. P. Feofilov and V. V. Ovsyankin, "Cooperative Luminescence of Solids", Applied Optics, vol. 6, No. 11 (Nov. 1967), pp. 1828-1833, [Bound Volume in CP04-08D33, S.P.E., John K. Corbin].
Pollack Slava A.
Shih I-Fu
Tzeng Robert
Alkov Leonard A.
Hannaher Constantine
Howell Janice A.
Hughes Aircraft Company
Karambelas A. W.
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