Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-01-16
2007-01-16
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C356S603000, C356S604000
Reexamination Certificate
active
10977173
ABSTRACT:
A method and system for detecting the presence of an object or the distance between the system and an object supports the provision of rapid and reliable obstacle detection. A transmitter emits generally linear beams of electromagnetic radiation with a transmitted radiation pattern within a defined spatial zone. A camera collects an image of the defined spatial zone. A data processor detects a presence of an object in the collected image based on an observed illumination radiation pattern on an object formed by at least one of the generally linear beams. A distance estimator estimates a distance between the object and the optical device based on a change (e.g., an observed shift in one or more positions of generally linear beams) from the transmitted radiation pattern to the observed illumination radiation pattern.
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Anderson Noel Wayne
Puhalla Jeffrey Scott
Deere & Company
Epps Georgia
Livedalen Brian
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