Non-contacting optical data transmission system
AssigneeSiemens Aktiengesellschaft
InventorsReinhold Guempelein, Peter Gawlik
Life of this patent
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Abstract
A non-contacting optical data transmission system, suitable for transmitting data between relatively movable mechanical parts, includes a waveguide, having an high-frequency generator connected at one end and an high-frequency receiver connected at an opposite end, the basic dielectric material of the waveguide being entirely or partially replaced by photosensitive material. An illumination pattern is generated on the waveguide with a light source and a mask, the reflection behavior of the waveguide being modified by this illumination pattern and thereby causing the amplitude of the signal transmitted through the waveguide to be modulated by keying the light source according to the data to be transmitted.
Claims4
A non-contacting optical data transmission system comprising:
- a high-frequency waveguide having first and second ends, and consisting of photosensitive material;
- a high-frequency transmitter coupled to said first end of said waveguide and a high-frequency receiver coupled to said second end of said waveguide;
- means, including a light source and a mask, for generating an illumination pattern on said photosensitive material of said waveguide for modifying the reflection behavior of said waveguide in accordance with said illumination pattern for varying the amplitude of a signal transmitted through said waveguide from said high-frequency transmitter to said high-frequency receiver;
- means for keying said light source dependent on data to be transmitted;
- and
- means for analyzing the amplitude of said signal received by said high-frequency receiver for recovering the transmitted data.
Dependencies are inferred from the claim text.