ATE82714T1 - METHOD AND APPARATUS FOR MACHINING THE CONTACT SURFACE OF A CONTACT LENS. - Google Patents

METHOD AND APPARATUS FOR MACHINING THE CONTACT SURFACE OF A CONTACT LENS.

Info

Publication number
ATE82714T1
ATE82714T1 AT88114314T AT88114314T ATE82714T1 AT E82714 T1 ATE82714 T1 AT E82714T1 AT 88114314 T AT88114314 T AT 88114314T AT 88114314 T AT88114314 T AT 88114314T AT E82714 T1 ATE82714 T1 AT E82714T1
Authority
AT
Austria
Prior art keywords
axis
machining
blank
contact
cutting tool
Prior art date
Application number
AT88114314T
Other languages
German (de)
Inventor
Markus Luechinger
Original Assignee
Falco Linsen Ag
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 Falco Linsen Ag filed Critical Falco Linsen Ag
Application granted granted Critical
Publication of ATE82714T1 publication Critical patent/ATE82714T1/en

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
    • B24B13/06—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, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

A contact-lens blank (15) is held in such a way that it cannot rotate about its axis (Y). A cutting tool (27) driven so as to rotate about a rotational axis (X) is used for the machining. During the machining, the rotational axis (X) of the cutting tool (27) and the axis (Y) of the blank (15) are pivoted with regard to one another about a pivot axis (Z) at right angles to both the rotational axis (X) and the axis (Y). So that the entire supporting face of the blank (15) can be machined in one operation, the rotational axis (X) of the cutting tool (27) is pivoted in both directions from a position at right angles to the axis (Y) of the blank (15). <IMAGE>
AT88114314T 1987-09-07 1988-09-02 METHOD AND APPARATUS FOR MACHINING THE CONTACT SURFACE OF A CONTACT LENS. ATE82714T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH343687 1987-09-07
EP88114314A EP0307731B1 (en) 1987-09-07 1988-09-02 Method and apparatus for machining the supporting face of a contact lens

Publications (1)

Publication Number Publication Date
ATE82714T1 true ATE82714T1 (en) 1992-12-15

Family

ID=4255925

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88114314T ATE82714T1 (en) 1987-09-07 1988-09-02 METHOD AND APPARATUS FOR MACHINING THE CONTACT SURFACE OF A CONTACT LENS.

Country Status (3)

Country Link
EP (1) EP0307731B1 (en)
AT (1) ATE82714T1 (en)
DE (1) DE3876189D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243658C2 (en) * 1992-12-23 1995-01-26 Jenalens Kontaktlinsen Tech Method and arrangement for machining a toric aspherical concave surface on a contact lens blank

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3670460A (en) * 1970-06-01 1972-06-20 Senoptics Inc Tool positioning means for lens grinder
DE2258152A1 (en) * 1972-11-28 1974-06-20 Wilhelm H Spira METHOD AND DEVICE FOR GENERATING TORICAL AREAS
US4068413A (en) * 1975-10-02 1978-01-17 Suddarth Jack M Adjustable lens grinding apparatus

Also Published As

Publication number Publication date
EP0307731A1 (en) 1989-03-22
EP0307731B1 (en) 1992-11-25
DE3876189D1 (en) 1993-01-07

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee