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US 4,599,537 AGranted
IR light emitting apparatus with visible detection means
OwnerShigeaki Yamashitainventor
Life of this patent
Estimating the term…
Abstract
An infrared light emitting element and an infrared/invisible conversion fluroescent substance are provided, and infrared rays to be generated from said infrared light emitting element are emitted outside, and simultaneously part of said infrared rays is illuminated on said fluorescent substance and visible light rays to be generated from said fluorescent substance are emitted outside through an optical fiber.
Claims18
A light emitting apparatus capable of simultaneously emitting infrared rays and visible rays, comprising in combination:
- a sealed infrared light emitting element which emits infrared light to the outside of said apparatus;
- a fluorescent substance which converts infrared into visible light located in proximity to said infrared light emitting element;
- and
- an optical fiber means connected with said fluorescent substance which guides the visible light rays produced by said fluorescent substance to the outside of said apparatus.
1 more element
Dependencies are inferred from the claim text.