Optical attenuator movement detection system
First Claim
1. An optical detection system comprising:
- a light emitting means positioned in a length of conduit so as to emit light into said conduit,a light transmission means having a first end slidably positioned in said conduit to receive light emitted by said light emitting means,a light detecting means coupled to a second end of said light transmission means to receive light propagated through said light transmission means,wherein the relative longitudinal distance between said light emitting means and said first end of said light transmission means varies within said conduit to yield an indication of the variable to be detected.
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Abstract
An optical attenuation measurement system is provided for obtaining signals proportional to movement of a system to which it is attached. The measurement system includes a light source positioned within a length of conduit in which the light emitted will produce multiple reflections. A fiber optic cable is slidably disposed within the conduit to transmit the radiation emitted from the light source gathered thereby. The relative displacement of the fiber optic cable to the light source produces a signal as a function of this displacement which is converted into electrical signals by a light detecting element at the opposite end of the cable. The system is particularly useful to form an interactive device for control of a remote intelligent machine, robot or the like. For example, the system may be used on an operator'"'"'s hand to detect movement of the hand and fingers for controlling a robotic hand which will mimick the operator'"'"'s hand movements.
27 Citations
20 Claims
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1. An optical detection system comprising:
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a light emitting means positioned in a length of conduit so as to emit light into said conduit, a light transmission means having a first end slidably positioned in said conduit to receive light emitted by said light emitting means, a light detecting means coupled to a second end of said light transmission means to receive light propagated through said light transmission means, wherein the relative longitudinal distance between said light emitting means and said first end of said light transmission means varies within said conduit to yield an indication of the variable to be detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A detection system to measure movement of a system to which is attached comprising:
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light emitting means; light detecting means; light coupling means having first and second ends between said light detecting means for propagating light from said light emitting means to said light detecting means; a length of conduit attached to the system having said light emitting means disposed therein so as to emit light into said conduit, said first end of said light coupling means being slidably positioned in said conduit to receive the emitted light from said light emitting means, wherein the longitudinal distance between said light emitting means and said first end of said light coupling means varies within said conduit with movement of the system acting to vary the amount of light reaching said light detecting means through said light coupling means as a function of the variable to be measured.
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Specification