Arrangement for optical transmission of communications
First Claim
1. In an arrangement for optical transmission of communications including at least one light transmitter and a light receiver which is assigned to each of the light transmitters, each of said light receivers being provided with a light gathering means consisting of a body of a material having an index of refraction greater than 1 with the improvement comprising said means converting a major part of the transmitted radiation into a band of different radiation and output coupling the band of different radiation at an increased intensity at an light outlet window optically coupled with the respective light receiver, each of said bodies containing a fluorescent substance and being a fluorescent body, said fluorescent substance having an absorption band, which approximately conforms with the emission band of the associated light transmitter, said fluorescent substance having an emission band which does not overlap the absorption band of said substance but is sensed by the light receiver.
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Accused Products
Abstract
An arrangement or device for optical transmission of communications including a light transmitter with an associated receiver characterized by the receiver having a light collecting body having an index of refraction greater than 1 and containing fluorescent materials which absorb the band of light emitted by the transmitter and create a band of light which is not absorbed by the substance and is detected by the receiver. If more than one transmitter is utilized, they are arranged to transmit in different frequency bands and each transmitter has an associated fluorescent substance which will absorb the discrete separate frequency but not the other frequency bands and emit a fluorescent signal which is only detected by the respective receiver for that transmitter. These fluorescent substances can be in separate light collecting bodies or as a mixture in a single body which has more than one receiver attached thereto.
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Citations
19 Claims
- 1. In an arrangement for optical transmission of communications including at least one light transmitter and a light receiver which is assigned to each of the light transmitters, each of said light receivers being provided with a light gathering means consisting of a body of a material having an index of refraction greater than 1 with the improvement comprising said means converting a major part of the transmitted radiation into a band of different radiation and output coupling the band of different radiation at an increased intensity at an light outlet window optically coupled with the respective light receiver, each of said bodies containing a fluorescent substance and being a fluorescent body, said fluorescent substance having an absorption band, which approximately conforms with the emission band of the associated light transmitter, said fluorescent substance having an emission band which does not overlap the absorption band of said substance but is sensed by the light receiver.
Specification