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US3552857A Expired / Lapsed US ⏱️ 0.0 years remaining

Optical device for the determination of the spacing of an object and its angular deviation relative to an initial position

Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1966-04-19
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Granted: 1971-01-05
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Expires: 1986-04-19
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Abstract

Abstract A MULTI-PURPOSE OPTICAL MEASURING DEVICE IN WHICH AN IMAGE OF AN OXCILLATING LUMINOUS SCANNING MARK IS PROJECTED, VIA A BEAM SPLITTER AND AN OBJECTIVE LENS, ONTO A REFLECTING SURFACE OF AN OBJECT TO BE LOCATED, POSITIONED, OR MEASURED, OR ONTO A REFLECTOR RIGIDLY CONNECTED THERETO. THE IMAGE OF THE SCANNING MARK, AFTER REFLECTION FROM THE OBJECT, IS PROJECTED THROUGH THE OBJECTIVE LENS AND THE BEAM SPLITTER ONTO AN INDEX CARRIER HAVING A PLURALITY OF INDICES. SAID IMAGE COACTS WITH SAID INDICES TO PRODUCE OPTICAL SIGNALS WHICH ARE INDICATIVE OF ANY LATERAL OR ANGULAR DISPLACEMENT OF THE OBJECT. AN EYEPIECE AND/OR A PHOTOELECTRIC TRANSDUCER ARE POSITIONED ADJACENT TO THE INDEX CARRIER FOR EVALUATION OF SAID SIGNALS.

Inventors

  • 👤 Fromund Hock
  • 👤 Karl Lang
  • 👤 Heribert Lussem

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 17:29
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/26; G01D5/32; G01D5/34; G01D5/36; G01D5/38; G01B; G01B11/00; G01B11/02; G01D5/347; G02; G02B; G02B21/00; G02B21/18

Claims Analysis

Total Claims: 0
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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) 1974-01-04 1974-07-06 1975-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-01-04 1978-07-06 1979-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-01-04 1982-07-06 1983-01-05 $7700.00 Window Closed / Lapsed

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