POSITION REFERENCE SENSOR
First Claim
1. A position reference sensor comprising:
- a light source configured to emit light having a first component and a second component;
a detector configured to detect reflected light; and
a processor configured to determine a distance between the position reference sensor and a target based on the emitted light and the detected reflected light, wherein the processor is further configured to determine that the target is a selective retroreflector based on the intensity of the first component of the light in the detected reflected light and the intensity of the second component of the light in the detected reflected light.
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Accused Products
Abstract
A position reference sensor (100) has a light source (120), a detector (160) and a processor (170). The light source (120) is configured to emit light having a first component and a second component. The detector (160) is configured to detect reflected light. The processor (170) is configured to determine a distance between the position reference sensor (100) and a target based on the emitted light and the detected reflected light. The processor (170) is also configured to determine that the target is a selective retroreflector (140) based on the intensity of the first component of the light in the detected reflected light and the intensity of the second component of the light in the detected reflected light.
14 Citations
20 Claims
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1. A position reference sensor comprising:
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a light source configured to emit light having a first component and a second component; a detector configured to detect reflected light; and a processor configured to determine a distance between the position reference sensor and a target based on the emitted light and the detected reflected light, wherein the processor is further configured to determine that the target is a selective retroreflector based on the intensity of the first component of the light in the detected reflected light and the intensity of the second component of the light in the detected reflected light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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9. (canceled)
Specification