Optical components
First Claim
1. A quality assessment apparatus for assessing the quality of an optical component, the optical component comprising an arrangement of a first and a second component grating having a component relative orientation angle, wherein the quality is assessed in terms of a deviation of the component relative orientation angle from a desired relative orientation angle, the apparatus comprising:
- a configurable support system configured to support a master component comprising a substantially matching arrangement of a first and a second master grating having the desired relative orientation angle and to support the optical component with the first and second component gratings in the vicinity of the first and second master gratings, the apparatus further comprising;
a light sensor configured to receive light which has interacted with both of the first gratings and light which has interacted with both of the second gratings, and to generate sensor data from the received light;
a drive mechanism coupled to the support system; and
a controller configured (i) to control the drive mechanism based on the sensor data to reconfigure the support system from a current configuration to a new configuration in which the fringe spacing of a first fringe pattern formed by the first gratings is substantially maximal and (ii) to measure from the sensor data the fringe spacing of a second fringe pattern formed by the second gratings in the new configuration, and to output a quality assessment based on the measured fringe spacing which is indicative of the deviation of the component relative orientation angle from the desired relative orientation angle.
1 Assignment
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Accused Products
Abstract
The following relates to assessing the quality of an optical component. The optical component comprises an arrangement of a first and a second optically transmissive component grating having a component relative orientation angle, and the quality is assessed in terms of a deviation of the component relative orientation angle from a desired relative orientation angle. A master component comprises a substantially matching arrangement of a first and a second optically transmissive master grating having the desired relative orientation angle. The components are supported with the first and second component gratings in the vicinity of the first and second master gratings, and first and second fringe patterns formed by the first gratings and second gratings respectively are used to output a quality assessment, which is based on the fringe spacing of the second fringe pattern when the fringe spacing of the first fringe pattern is substantially maximal.
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Citations
20 Claims
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1. A quality assessment apparatus for assessing the quality of an optical component, the optical component comprising an arrangement of a first and a second component grating having a component relative orientation angle, wherein the quality is assessed in terms of a deviation of the component relative orientation angle from a desired relative orientation angle, the apparatus comprising:
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a configurable support system configured to support a master component comprising a substantially matching arrangement of a first and a second master grating having the desired relative orientation angle and to support the optical component with the first and second component gratings in the vicinity of the first and second master gratings, the apparatus further comprising; a light sensor configured to receive light which has interacted with both of the first gratings and light which has interacted with both of the second gratings, and to generate sensor data from the received light; a drive mechanism coupled to the support system; and a controller configured (i) to control the drive mechanism based on the sensor data to reconfigure the support system from a current configuration to a new configuration in which the fringe spacing of a first fringe pattern formed by the first gratings is substantially maximal and (ii) to measure from the sensor data the fringe spacing of a second fringe pattern formed by the second gratings in the new configuration, and to output a quality assessment based on the measured fringe spacing which is indicative of the deviation of the component relative orientation angle from the desired relative orientation angle. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A quality assessment process for assessing the quality of an optical component, the optical component comprising an arrangement of a first and a second component grating having a component relative orientation angle, wherein the quality is assessed in terms of a deviation of the component relative orientation angle from a desired relative orientation angle, wherein the optical component and a master component comprising a substantially matching arrangement of a first and a second master grating having the desired relative orientation angle are supported by a configurable support system with the first and second component gratings in the vicinity of the first and second master gratings, the process comprising:
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receiving sensor data, the sensor data generated from light received which has interacted with both of the first gratings and light which has interacted with both of the second gratings; reconfiguring the support system based on the sensor data from a current configuration to a new configuration, in which the fringe spacing of a first fringe pattern formed by the first gratings is substantially maximal; measuring from the sensor data the fringe spacing of a second fringe pattern formed by the second gratings in the new configuration; and outputting a quality assessment based on the measured fringe spacing which is indicative of the deviation of the component relative orientation angle from the desired relative orientation angle. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus comprising:
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one or more processors; and a computer-readable storage medium having stored thereon code for assessing the quality of an optical component, the optical component comprising an arrangement of a first and a second component grating having a component relative orientation angle, wherein the quality is assessed in terms of a deviation of the component relative orientation angle from a desired relative orientation angle, wherein the optical component and a master component comprising a substantially matching arrangement of a first and a second master grating having the desired relative orientation angle are supported by a configurable support system with the first and second component gratings in the vicinity of the first and second master gratings, the code configured when executed by the one or more processors to cause operations comprising; receiving sensor data, the sensor data generated from light which has interacted with both of the first gratings and light which has interacted with both of the second gratings; reconfiguring the support system based on the sensor data from a current configuration to a new configuration, in which the fringe spacing of a first fringe pattern formed by the first gratings is substantially maximal; measuring from the sensor data the fringe spacing of a second fringe pattern formed by the second gratings in the new configuration; and outputting a quality assessment based on the measured fringe spacing which is indicative of the deviation of the component relative orientation angle from the desired relative orientation angle. - View Dependent Claims (19, 20)
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Specification