FR2189760A1 - - Google Patents

Info

Publication number
FR2189760A1
FR2189760A1 FR7319151A FR7319151A FR2189760A1 FR 2189760 A1 FR2189760 A1 FR 2189760A1 FR 7319151 A FR7319151 A FR 7319151A FR 7319151 A FR7319151 A FR 7319151A FR 2189760 A1 FR2189760 A1 FR 2189760A1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7319151A
Other languages
French (fr)
Other versions
FR2189760B1 (lt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rank Organization Ltd
Original Assignee
Rank Organization Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rank Organization Ltd filed Critical Rank Organization Ltd
Publication of FR2189760A1 publication Critical patent/FR2189760A1/fr
Application granted granted Critical
Publication of FR2189760B1 publication Critical patent/FR2189760B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • G02B27/648—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake for automatically maintaining a reference alignment, e.g. in self-levelling surveying instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Optical Distance (AREA)
  • Optical Elements Other Than Lenses (AREA)
FR7319151A 1972-05-26 1973-05-25 Expired FR2189760B1 (lt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2496172 1972-05-26
GB246373A GB1394453A (en) 1972-05-26 1973-01-17 Optical instruments

Publications (2)

Publication Number Publication Date
FR2189760A1 true FR2189760A1 (lt) 1974-01-25
FR2189760B1 FR2189760B1 (lt) 1976-04-23

Family

ID=26237534

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7319151A Expired FR2189760B1 (lt) 1972-05-26 1973-05-25

Country Status (5)

Country Link
JP (1) JPS4951975A (lt)
CH (1) CH557545A (lt)
DE (1) DE2327157A1 (lt)
FR (1) FR2189760B1 (lt)
GB (1) GB1394453A (lt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106679629B (zh) * 2017-01-13 2021-03-23 西南交通大学 一种基于光栅衍射的尺式水平仪及测量斜面倾角的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH673707A5 (lt) * 1987-07-24 1990-03-30 Kern & Co Ag

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR874021A (fr) * 1940-07-31 1942-07-27 Niveau topographique à ligne de mire automatiquement horizontale
US2857804A (en) * 1955-03-04 1958-10-28 Zeiss Carl Interferometer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR874021A (fr) * 1940-07-31 1942-07-27 Niveau topographique à ligne de mire automatiquement horizontale
US2857804A (en) * 1955-03-04 1958-10-28 Zeiss Carl Interferometer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106679629B (zh) * 2017-01-13 2021-03-23 西南交通大学 一种基于光栅衍射的尺式水平仪及测量斜面倾角的方法

Also Published As

Publication number Publication date
GB1394453A (en) 1975-05-14
FR2189760B1 (lt) 1976-04-23
CH557545A (de) 1974-12-31
DE2327157A1 (de) 1973-12-06
JPS4951975A (lt) 1974-05-20

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Legal Events

Date Code Title Description
ST Notification of lapse