US3604810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the objective localization of an object relative to a scale carrier
Assignee: Jenoptik AG
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Filing: 1968-06-14
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Granted: 1971-09-14
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Expires: 1988-06-14
Abstract
Abstract The positioning system of a machine tool comprises a coded multitrace scale which cooperates with a scanner provided with an interpolation system subdividing the intervals of the finest code trace. The scanner is provided with an optical element having a binary-coded scale effecting cyclical motion, and with pulse transmitters starting and terminating the interpolation process. Photoelectric receivers scan the coded scale and the optical element.
Inventors
- 👤 Kurt Schuch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:15
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/26; G01D5/32; G01D5/34; G01D5/347; G01D5/34776
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
325 words
An apparatus for the objective localization of an object relative to a scale carrier, comprising at least one light source for emitting three beams of light, a carrier carrying a binary coded scale and displaceable parallel thereto, an optical element provided with a binary interpolation scale and two cyclically displaceable marks, optical means for directing the beams of light from said light source to said carrier and said optical element and for illuminating at least portions of said scales and marks, one of said beams of light illuminating said carrier, a first optical system and an assembly of photoelectric receivers, said first optical system imaging on said assembly at least a first line of said binary coded scale, another of said beams of light illuminating said interpolation scale and one of said marks and two photoelectric receivers, one of said two photoelectric receivers being in the rear of said interpolation scale and the other of said photoelectric receivers being in the rear of said one mark, the third of said beams illuminating said carrier, a second optical system, the second of said marks and a photoelectric receiver in the rear of said second mark, said second optical system imaging at least one second line of said binary coded scale on said second mark, said optical element being adjacent to the photoelectric receivers coordinated to said interpolation scale and said marks and being displaceable substantially at right angles to said another light beam and said third light beam, the one of said marks starting the process of subdividing the binary coded scale and the other of said marks terminating this process, at least one electronic counter means, the photoelectric receivers adjacent to said interpolation scale and said marks being connected to said counter means, said counter means counting the pulses emitted by the last-mentioned photoelectric receiver, a storage device connected to said counter means and to said assembly of receivers, and means for recording the countings.
Claim 2
Independent Claim
325 words
An apparatus for the objective localization of an object relative to a scale carrier, comprising at least one light source for emitting three beams of light, a carrier carrying a binary coded scale and displaceable parallel thereto, an optical element provided with a binary interpolation scale and two cyclically displaceable marks, optical means for directing the beams of light from said light source to said carrier and said optical element and for illuminating at least portions of said scales and marks, one of said beams of light illuminating said carrier, a first optical system and an assembly of photoelectric receivers, said first optical system imaging on said assembly at least a first line of said binary coded scale, another of said beams of light illuminating said interpolation scale and one of said marks and two photoelectric receivers, one of said two photoelectric receivers being in the rear of said interpolation scale and the other of said photoelectric receivers being in the rear of said one mark, the third of said beams illuminating said carrier, a second optical system, the second of said marks and a photoelectric receiver in the rear of said second mark, said second optical system imaging at least one second line of said binary coded scale on said second mark, said optical element being adjacent to the photoelectric receivers coordinated to said interpolation scale and said marks and being displaceable substantially at right angles to said another light beam and said third light beam, the one of said marks starting the process of subdividing the binary coded scale and the other of said marks terminating this process, at least one electronic counter means, the photoelectric receivers adjacent to said interpolation scale and said marks being connected to said counter means, said counter means counting the pulses emitted by the last-mentioned photoelectric receiver, a storage device connected to said counter means and to said assembly of receivers, and means for recording the countings.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |