GB1234272A - - Google Patents

Info

Publication number
GB1234272A
GB1234272A GB1234272DA GB1234272A GB 1234272 A GB1234272 A GB 1234272A GB 1234272D A GB1234272D A GB 1234272DA GB 1234272 A GB1234272 A GB 1234272A
Authority
GB
United Kingdom
Prior art keywords
blank
mould
heating
progressively varying
opthalmic lens
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
Other languages
English (en)
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
Priority claimed from FR106174A external-priority patent/FR1529898A/fr
Priority claimed from FR122388A external-priority patent/FR1544799A/fr
Application filed filed Critical
Publication of GB1234272A publication Critical patent/GB1234272A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • 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
    • B24B13/04—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses involving grinding wheels controlled by gearing
    • B24B13/043—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses involving grinding wheels controlled by gearing using cup-type grinding wheels

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
GB1234272D 1967-05-12 1968-05-13 Expired GB1234272A (https=)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR106174A FR1529898A (fr) 1967-05-12 1967-05-12 Procédé de fabrication de verres progressifs
FR122388A FR1544799A (fr) 1967-09-27 1967-09-27 Lentille à foyer progressivement variable et procédé de meulage de celle-ci

Publications (1)

Publication Number Publication Date
GB1234272A true GB1234272A (https=) 1971-06-03

Family

ID=26176393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1234272D Expired GB1234272A (https=) 1967-05-12 1968-05-13

Country Status (2)

Country Link
DE (1) DE1772396C3 (https=)
GB (1) GB1234272A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349374A (en) 1981-01-21 1982-09-14 Camelot Industries Corporation Method and apparatus for manufacturing glass progressive lenses

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120425A (ja) * 1982-12-27 1984-07-12 Canon Inc レンズの形成方法
GB2260930A (en) * 1991-11-01 1993-05-05 Pilkington Visioncare Inc Forming lens wafers of desired curvature for manufacture of laminated lenses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349374A (en) 1981-01-21 1982-09-14 Camelot Industries Corporation Method and apparatus for manufacturing glass progressive lenses

Also Published As

Publication number Publication date
DE1772396A1 (de) 1970-10-22
DE1772396C3 (de) 1975-12-18
DE1772396B2 (de) 1975-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee