System and method of determining a position of a radiation scattering/reflecting element
First Claim
Patent Images
1. A system for determining a position of a radiation reflecting/scattering element, the system comprising:
- a transmissive element or plate having a first surface part adapted to be engaged by the reflecting/scattering element and a second surface part being opposite to the first surface part,a radiating element adapted to provide radiation into the transmissive element and onto the first surface part,a detector adapted to detect radiation provided by the radiating element and that is reflected/scattered by the reflecting/scattering element when engaging the first surface part at a position thereof and outputting a signal relating to an angle of incidence of the radiation, the transmissive element being adapted to guide the reflected/scattered light via total internal reflection to the detector, the detector being at least one at least one-dimensional detector having a plurality of detecting elements each being adapted to detect radiation and to output a corresponding signal,at least one aperture, pinhole, or lens arranged between the transmissive element and the detector and adapted to modulate radiation incident on the detecting elements, anda determining element adapted to determine, on the basis of angle signal, a position of engagement of the reflecting/scattering element on the first surface part.
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Abstract
A method and system for determining the position of a radiation scattering/reflecting element, where the radiation emitter is provided at a surface of a radiation transmissive element an on which radiation is incident. This incident radiation is scattered/diffused/reflected by the scattering/reflecting element and guided by the transmissive element toward a detector able to determine the position of the element.
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Citations
42 Claims
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1. A system for determining a position of a radiation reflecting/scattering element, the system comprising:
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a transmissive element or plate having a first surface part adapted to be engaged by the reflecting/scattering element and a second surface part being opposite to the first surface part, a radiating element adapted to provide radiation into the transmissive element and onto the first surface part, a detector adapted to detect radiation provided by the radiating element and that is reflected/scattered by the reflecting/scattering element when engaging the first surface part at a position thereof and outputting a signal relating to an angle of incidence of the radiation, the transmissive element being adapted to guide the reflected/scattered light via total internal reflection to the detector, the detector being at least one at least one-dimensional detector having a plurality of detecting elements each being adapted to detect radiation and to output a corresponding signal, at least one aperture, pinhole, or lens arranged between the transmissive element and the detector and adapted to modulate radiation incident on the detecting elements, and a determining element adapted to determine, on the basis of angle signal, a position of engagement of the reflecting/scattering element on the first surface part. - 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 method for determining a position of a radiation reflecting/scattering element, the method comprising:
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providing radiation into a transmissive element or plate and onto a first surface part thereof, the transmissive element having a second surface part being opposite to the first surface part, providing engagement between the reflecting/scattering element and the first surface part of the transmissive element, guiding the reflected/scattered light via total internal reflection in the transmissive element to a detecting means being at least one at least one-dimensional detector having a plurality of detecting elements each detecting the radiation and outputting a corresponding signal, modulating radiation incident on the detecting means with at least one aperture, pinhole, or lens arranged between the transmissive element and the detector, detecting using the detecting means, radiation which is provided into the transmissive element and reflected/scattered by the reflecting/scattering element engaging the first surface part at a position thereof, and modulated by the at least one aperture, pinhole, or lens, and providing a signal relating to an angle of incidence of the radiation, and determining, on the basis of the angle signal, a position of engagement of the reflecting/scattering element on the first surface part. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A system for determining the a position of a radiation emitting/reflecting/scattering element, the system comprising:
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a transmissive element or plate having a first surface part and a second surface part being opposite to the first surface part, a first reflective element extending in a direction of the first surface part and having one or more predetermined areas, the reflective element being adapted to, in each area, provide radiation transmission from the first surface toward the second surface part and, outside the area(s), reflect radiation traveling from the second surface part toward the first surface back toward the second surface part, a second reflective element extending in a direction of the first surface part and being adapted to reflect radiation traveling in the transmissive element from the first reflective element toward the second surface part back toward the first surface part and the first reflective element, a detector, the detector being at least one at least one-dimensional detector having a plurality of detecting elements each being adapted to detect radiation and to output a corresponding signal, at least one aperture, pinhole, or lens arranged between the transmissive plate and the detector and adapted to modulate radiation incident on the detecting elements, the detector being adapted to; detect radiation from the emitting/reflecting/scattering element, which radiation has entered the transmissive element, passed through an area of the first reflective element and has been reflected toward the detector by the first and second reflective element, and output a signal relating to an angle of incidence of the radiation, to a determining element adapted to determine, on the basis of the angle signal, a position of the emitting/reflecting/scattering element in relation to the first surface part. - View Dependent Claims (40)
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41. A method of determining a position of a radiation emitting/reflecting/scattering element, the method comprising:
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providing a transmissive element or plate having a first surface part and a second surface part being opposite to the first surface part, providing a first reflective element extending in a direction of the first surface part, and having a plurality of predetermined areas, providing a second reflective element extending in a direction of the first surface part, providing a detecting means including at least one at least one-dimensional detector having a plurality of detecting elements each being adapted to detect radiation and to output a corresponding signal, receiving radiation from the emitting/reflecting/scattering element into the transmissive element, through an area, and toward the second reflective element, the first and second reflective elements subsequently reflecting at least part of the received radiation toward the detecting means, modulating radiation incident on the detecting elements with at least one aperture, pinhole, or lens arranged between the transmissive element and the detecting means, detecting modulated radiation and outputting a signal relating to an angle of incidence of the radiation, and determining, on the basis of the angle signal, a position of the emitting/reflecting/scattering element in relation to the first surface part. - View Dependent Claims (42)
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Specification