Optical method for detecting object
First Claim
1. An optical method for detecting an object, said optical method comprising:
- generating a plurality of coded signals;
communicating said plurality of coded signals to a corresponding plurality of light sources;
modulating said plurality of light sources according to said plurality of coded signals;
emitting a modulated light beam to said object from said plurality of light sources;
receiving a reflected modulated light beam reflected from said object;
de-modulating said reflected modulated light beam to obtain a code information therewithin; and
determining a status of said object according to said de-modulated code information of said reflected modulated light beam.
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Abstract
The present invention provides a method for detecting the object by using the refraction and reflection, in conjunction with the coded signal. The detecting method includes the signal is generated in binary code, and the modulated coded signals are emitted from the light sources that have different position and the emitting angle within the light emitting source flat array. Thus, the photosensitive device can determine the object is existence and measure the object size and distance that according to the reflected modulation light beam and a corresponding code information therewithin. Furthermore, the three-dimensional moving direction and the moving rate of the object are calculated by the reflected modulation light beam and the coded signals therewithin.
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Citations
21 Claims
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1. An optical method for detecting an object, said optical method comprising:
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generating a plurality of coded signals;
communicating said plurality of coded signals to a corresponding plurality of light sources;
modulating said plurality of light sources according to said plurality of coded signals;
emitting a modulated light beam to said object from said plurality of light sources;
receiving a reflected modulated light beam reflected from said object;
de-modulating said reflected modulated light beam to obtain a code information therewithin; and
determining a status of said object according to said de-modulated code information of said reflected modulated light beam. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An optical method for detecting an object, said optical method comprising:
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providing a plurality of coded signals, wherein said plurality of coded signals are coded in binary coding;
communicating said plurality of coded signals to a corresponding plurality of light sources;
emitting a plurality of modulated light beam to said object;
receiving a plurality of reflected modulation light beam from said object;
de-modulating said plurality of reflected modulation light beam to obtain a code information therewithin; and
determining the status of said object according to said de-modulated code information. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An optical detecting object apparatus, said apparatus comprising:
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a digital circuit, said digital circuit generating a plurality of coded signals;
a multiplex, said multiplex communicating said plurality of coded signals to a corresponding plurality of light sources;
said plurality of light sources emitting the modulated light beam to detect an object;
a plurality of lens, said plurality of lens located in front of said plurality of said light sources and focused said modulation light beam;
at least a photosensitive device, at least said photosensitive device located within said plurality of light sources to receive a reflected modulated light beam;
at least a wave filter, at least said wave filter located in front of at least said photosensitive device; and
a treatment device, said treatment device used to treat said plurality of said reflected modulated light beam and said corresponding code information within to determine a status of said object. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification