BEAM POSITION DETECTION SYSTEM FOR USE IN AN OPTICAL SCANNING SYSTEM
An incremental optical position sensing system utilizes a single laser beam and an out of focus grating which is between a pair of lenses whose focal planes coincide. The scanning laser beam passes through the first lens, scans the grating, passes through the second lens and impinges upon a pair of...
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| Main Author | |
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| Format | Patent |
| Language | English |
| Published |
18.04.1984
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| Subjects | |
| Online Access | Get full text |
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| Abstract | An incremental optical position sensing system utilizes a single laser beam and an out of focus grating which is between a pair of lenses whose focal planes coincide. The scanning laser beam passes through the first lens, scans the grating, passes through the second lens and impinges upon a pair of sensors. The phase correlation between the signals from the sensors is used to determine the direction of motion of the laser beam and an up/down counter is utilized to accumulate the absolute position of the beam. |
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| AbstractList | An incremental optical position sensing system utilizes a single laser beam and an out of focus grating which is between a pair of lenses whose focal planes coincide. The scanning laser beam passes through the first lens, scans the grating, passes through the second lens and impinges upon a pair of sensors. The phase correlation between the signals from the sensors is used to determine the direction of motion of the laser beam and an up/down counter is utilized to accumulate the absolute position of the beam. |
| Author | MAYER RUD |
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| Notes | Application Number: GB19830016436 |
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| PublicationDate | 19840418 |
| PublicationDateYYYYMMDD | 1984-04-18 |
| PublicationDate_xml | – month: 04 year: 1984 text: 19840418 day: 18 |
| PublicationDecade | 1980 |
| PublicationYear | 1984 |
| RelatedCompanies | THE SINGER COMPANY |
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| Snippet | An incremental optical position sensing system utilizes a single laser beam and an out of focus grating which is between a pair of lenses whose focal planes... |
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| SubjectTerms | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION |
| Title | BEAM POSITION DETECTION SYSTEM FOR USE IN AN OPTICAL SCANNING SYSTEM |
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