Method and apparatus for restoring the light transmittance of an

Details Method and apparatus for restoring the light transmittance of an Method and apparatus for restoring the light transmittance of an

1982-02-17

1985-06-18

Sikes, William L.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

2504921, G02B 514

Patent

active

045238065

ABSTRACT:
When a fiber optic endoscope is exposed to X-ray or .gamma.-ray irradiation, the fiber bundle becomes discolored and there is thus a reduction in light transmittance. This makes observation or examination difficult or impossible. The irradiation-induced reduction in light transmittance of the image transmitting fiber bundle is restored, according to this invention, by visible light radiation endwise therethrough. Visible light radiation having a short wavelength largely restore the light transmittance to that before irradiation in a short period of time.

REFERENCES:
patent: 4232228 (1980-11-01), Reich et al.
patent: 4375315 (1983-03-01), Lacombat et al.

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