GB1386441A - Lens block - Google Patents

Lens block

Info

Publication number
GB1386441A
GB1386441A GB652572A GB652572A GB1386441A GB 1386441 A GB1386441 A GB 1386441A GB 652572 A GB652572 A GB 652572A GB 652572 A GB652572 A GB 652572A GB 1386441 A GB1386441 A GB 1386441A
Authority
GB
United Kingdom
Prior art keywords
cavity
blocking material
lens
passageway
block
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
Application number
GB652572A
Other languages
English (en)
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.)
Gerber Coburn Optical Inc
Original Assignee
Coburn Optical Industries Inc
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 Coburn Optical Industries Inc filed Critical Coburn Optical Industries Inc
Publication of GB1386441A publication Critical patent/GB1386441A/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
GB652572A 1971-02-24 1972-02-11 Lens block Expired GB1386441A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11831871A 1971-02-24 1971-02-24

Publications (1)

Publication Number Publication Date
GB1386441A true GB1386441A (en) 1975-03-05

Family

ID=22377858

Family Applications (1)

Application Number Title Priority Date Filing Date
GB652572A Expired GB1386441A (en) 1971-02-24 1972-02-11 Lens block

Country Status (7)

Country Link
US (1) US3704558A (enExample)
JP (1) JPS5520822B1 (enExample)
BE (1) BE779818A (enExample)
CA (1) CA958426A (enExample)
DE (1) DE2208444A1 (enExample)
FR (1) FR2131970B1 (enExample)
GB (1) GB1386441A (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU569842B2 (en) * 1982-05-14 1988-02-25 Coopervision (U.K.) Ltd. Contact lens manufacture
JPS6435168A (en) * 1987-07-31 1989-02-06 Honda Motor Co Ltd Control device for vehicle continuously variable transmission
US5210695A (en) * 1990-10-26 1993-05-11 Gerber Optical, Inc. Single block mounting system for surfacing and edging of a lens blank and method therefor
MX9101663A (es) * 1990-10-29 1992-06-05 Pilkington Visioncare Inc Componentes termoplasticos reforzados para usarse en la fabricacion de lentes oftalmicos y metodos para elaborar estos componentes
US5269102A (en) * 1991-06-19 1993-12-14 Gerber Optical, Inc. Disposable lap blank
US5177907A (en) * 1991-11-12 1993-01-12 Summitt Molding & Engineering, Inc. Plastic lens block with ribs
EP0726831A1 (en) * 1992-07-17 1996-08-21 Minnesota Mining And Manufacturing Company Method of processing a lens and means for use in the method
US5649856A (en) * 1995-12-13 1997-07-22 Coburn Optical Industries, Inc. Tear-away block for an ophthalmic lens
US6110016A (en) * 1998-06-22 2000-08-29 Ppg Industries Ohio, Inc. Lens block and method of processing lenses
EP3543003A1 (de) 2018-03-23 2019-09-25 Carl Zeiss Vision International GmbH Brillenglasrohling sowie verfahren und vorrichtung zum herstellen eines brillenglases aus einem brillenglasrohling

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3140568A (en) * 1963-02-28 1964-07-14 Univis Inc Lens blocking device
US3353307A (en) * 1964-10-29 1967-11-21 Titmus Optical Company Inc Lens holder for metallic blocking system
US3355342A (en) * 1965-02-26 1967-11-28 Armorlite Lens Company Inc Method of supporting lens blanks for grinding and polishing
US3383808A (en) * 1965-05-25 1968-05-21 Lunette De Paris Inc Lens block

Also Published As

Publication number Publication date
US3704558A (en) 1972-12-05
JPS5520822B1 (enExample) 1980-06-05
FR2131970B1 (enExample) 1973-06-29
DE2208444A1 (de) 1972-09-28
BE779818A (enExample) 1972-06-16
FR2131970A1 (enExample) 1972-11-17
CA958426A (en) 1974-11-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee