Integrated optical encoder for tilt able rotatable shaft
First Claim
1. An electronic device comprising:
- one or more light sources;
a plurality of sensors;
an optical encoder;
an integrated module comprising a first body, wherein the light sources, the plurality of sensors, and the optical encoder are each coupled to the first body such that the light sources, the plurality of sensors, and the optical encoder are maintained in optical alignment; and
a shaft coupled to the optical encoder, wherein the shaft is disposed outside the integrated module and flexibly coupled to the optical encoder such that the shaft is able to tilt without causing the optical encoder to move out of optical alignment with the light sources and the plurality of sensors; and
one or more buttons disposed around the shaft and configured to be depressed by the shaft when the shaft is tilted.
1 Assignment
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Accused Products
Abstract
Examples of the disclosure enclose an optical target on an encoder and sensors inside a single integrated module, wherein the encoder and the sensors are coupled to the same rigid body to maintain optical alignment between the sensors and the optical target on the encoder. Further, the module itself may be hermetically sealed to protect the optical path (e.g., from a light source to the optical target to the sensors) from contamination due to outside dirt, debris, or light sources internal/external to the device that might further interfere with alignment and/or proper sensing. Because the integrated module results in smaller variations in the alignment between the optical target and the sensors, the dynamic range of the sensors may be reduced, resulting in less power consumption and, potentially, longer battery life for the device. The use of an integrated module can also enable relaxed manufacturing requirements for the optical sensor and/or the optical target.
22 Citations
15 Claims
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1. An electronic device comprising:
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one or more light sources; a plurality of sensors; an optical encoder; an integrated module comprising a first body, wherein the light sources, the plurality of sensors, and the optical encoder are each coupled to the first body such that the light sources, the plurality of sensors, and the optical encoder are maintained in optical alignment; and a shaft coupled to the optical encoder, wherein the shaft is disposed outside the integrated module and flexibly coupled to the optical encoder such that the shaft is able to tilt without causing the optical encoder to move out of optical alignment with the light sources and the plurality of sensors; and one or more buttons disposed around the shaft and configured to be depressed by the shaft when the shaft is tilted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of manufacturing an electronic device, the method comprising:
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coupling one or more light sources, a plurality of sensors, and an optical encoder to a first body of an integrated module, wherein the integrated module encloses the light sources, the plurality of sensors, and at least a portion of the optical encoder; sealing the integrated module using one or more O-rings that couple the optical encoder to the first body of the integrated module; and after sealing the integrated module, coupling the optical encoder to a shaft, wherein the shaft is disposed outside the integrated module, and disposing one or more buttons around the shaft and configured to be depressed by the shaft when the shaft is tilted, wherein the shaft is flexibly coupled to the optical encoder such that the shaft is able to tilt without causing the optical encoder to move out of optical alignment with the light sources and the plurality of sensors. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification