System for determining an orientation of a device
AssigneeNexperia B.V.
InventorsYazhao LIU, Johannes Frans Lodewijk Goosen, Gijs Van Der Veen
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Abstract
A system for determining an orientation of a device is provided that includes a diffraction grating arranged on a surface of the device. By impinging a collimated light beam onto the diffraction grating an m-th order light beam and an n-th order light beam are generated. By monitoring the positions on sensor surface at which these light beams are detected, orientation information concerning an orientation of the device can be determined.
Claims18
A system for determining an orientation of a device, comprising:
- a diffraction grating arranged on a surface of the device;
- a collimated light source configured for emitting collimated light onto the diffraction grating thereby creating, by diffraction by the diffraction grating, an m-th order light beam and an n-th order light beam, wherein m is different from n, and wherein m and n are both integers different from zero;
- a first light sensor having a first sensor surface and being configured to detect the m-th order light beam, wherein the first light sensor is configured to detect a first position on the first sensor surface at which the m-th order light beam is detected;
- a second light sensor having a second sensor surface and being configured to detect the n-th order light beam, wherein the second light sensor is configured to detect a second position on the second sensor surface at which the n-th order light beam is detected;
- and
- a processor for determining orientation information concerning an orientation of the device based on the detected first position and the detected second position.
A method for determining an orientation of a device, wherein the device has a surface that is provided with a diffraction grating, the method comprising the steps of:
- emitting collimated light onto the diffraction grating thereby creating, by diffraction by the diffraction grating, an m-th order light beam and an n-th order light beam, wherein m is different from n, and wherein m and n are both integers different than zero;
- detecting, using a first light sensor having a first sensor surface, the m-th order light beam, the detecting comprising detecting a first position on the first sensor surface at which the m-th order light beam is detected;
- detecting, using a second light sensor having a second sensor surface, the n-th order light beam, the detecting comprising detecting a second position on the second sensor surface at which the n-th order light beam is detected;
- and
- determining, using a processor, an orientation of the device based on the detected first position and the detected second position.
Dependencies are inferred from the claim text.