FR2674164B1 - DEVICE FOR THE ACCURATE POSITIONING OF AN OPTICAL GLASS BLANK WITH RESPECT TO A REFERENCE PLANE SURFACE. - Google Patents

DEVICE FOR THE ACCURATE POSITIONING OF AN OPTICAL GLASS BLANK WITH RESPECT TO A REFERENCE PLANE SURFACE.

Info

Publication number
FR2674164B1
FR2674164B1 FR9103244A FR9103244A FR2674164B1 FR 2674164 B1 FR2674164 B1 FR 2674164B1 FR 9103244 A FR9103244 A FR 9103244A FR 9103244 A FR9103244 A FR 9103244A FR 2674164 B1 FR2674164 B1 FR 2674164B1
Authority
FR
France
Prior art keywords
respect
reference plane
optical glass
accurate positioning
plane surface
Prior art date
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.)
Expired - Fee Related
Application number
FR9103244A
Other languages
French (fr)
Other versions
FR2674164A1 (en
Inventor
Lecerf Michel Jean Marcel
Langlois Jean-Pierre M Fernand
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.)
BUCHMANN OPTICAL ENG
Original Assignee
BUCHMANN OPTICAL ENG
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 BUCHMANN OPTICAL ENG filed Critical BUCHMANN OPTICAL ENG
Priority to FR9103244A priority Critical patent/FR2674164B1/en
Priority to DE19924208271 priority patent/DE4208271A1/en
Publication of FR2674164A1 publication Critical patent/FR2674164A1/en
Application granted granted Critical
Publication of FR2674164B1 publication Critical patent/FR2674164B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/005—Blocking means, chucks or the like; Alignment devices
    • B24B13/0055—Positioning of lenses; Marking of lenses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
FR9103244A 1991-03-18 1991-03-18 DEVICE FOR THE ACCURATE POSITIONING OF AN OPTICAL GLASS BLANK WITH RESPECT TO A REFERENCE PLANE SURFACE. Expired - Fee Related FR2674164B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9103244A FR2674164B1 (en) 1991-03-18 1991-03-18 DEVICE FOR THE ACCURATE POSITIONING OF AN OPTICAL GLASS BLANK WITH RESPECT TO A REFERENCE PLANE SURFACE.
DE19924208271 DE4208271A1 (en) 1991-03-18 1992-03-14 Device for accurate positioning of lens blank - has optical element transmitting light only in direction normal to reference image to avoid parallax errors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9103244A FR2674164B1 (en) 1991-03-18 1991-03-18 DEVICE FOR THE ACCURATE POSITIONING OF AN OPTICAL GLASS BLANK WITH RESPECT TO A REFERENCE PLANE SURFACE.

Publications (2)

Publication Number Publication Date
FR2674164A1 FR2674164A1 (en) 1992-09-25
FR2674164B1 true FR2674164B1 (en) 1993-06-18

Family

ID=9410836

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9103244A Expired - Fee Related FR2674164B1 (en) 1991-03-18 1991-03-18 DEVICE FOR THE ACCURATE POSITIONING OF AN OPTICAL GLASS BLANK WITH RESPECT TO A REFERENCE PLANE SURFACE.

Country Status (2)

Country Link
DE (1) DE4208271A1 (en)
FR (1) FR2674164B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425665A (en) * 1992-12-09 1995-06-20 National Optronics, Inc. Optical lens blocker and method
FR2720312B1 (en) * 1994-05-24 1996-08-14 Buchmann Optical Eng Arrangement for viewing the bifocal area of an ophthalmic lens, and apparatus comprising such an arrangement.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1548515A (en) * 1967-10-23 1968-12-06
FR2270988A1 (en) * 1974-05-16 1975-12-12 Asselin Robert Spectacles lens centring appts. for grinding machine - has rotary polarised plate system superimposing template and lens images
FR2465461A1 (en) * 1979-04-23 1981-03-27 Buget Bernard OPTICAL MENSURATOR OF THE POSITION OF THE VISUAL AXIS
NL8600526A (en) * 1986-03-03 1987-10-01 Philips Nv DEVICE FOR DETECTING A CENTERING ERROR.
DE4012661A1 (en) * 1990-04-20 1991-10-24 Wernicke & Co Gmbh Lens blank parallax-free centring instrument - incorporates liquid-crystal screen displaying template and scale

Also Published As

Publication number Publication date
DE4208271C2 (en) 1993-04-01
DE4208271A1 (en) 1992-09-24
FR2674164A1 (en) 1992-09-25

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Legal Events

Date Code Title Description
ST Notification of lapse