CH550653A - DEVICE FOR SIMULTANEOUSLY CASTING A VARIETY OF PLASTIC OPTICAL LENSES. - Google Patents

DEVICE FOR SIMULTANEOUSLY CASTING A VARIETY OF PLASTIC OPTICAL LENSES.

Info

Publication number
CH550653A
CH550653A CH804472A CH804472A CH550653A CH 550653 A CH550653 A CH 550653A CH 804472 A CH804472 A CH 804472A CH 804472 A CH804472 A CH 804472A CH 550653 A CH550653 A CH 550653A
Authority
CH
Switzerland
Prior art keywords
variety
plastic optical
optical lenses
simultaneously casting
casting
Prior art date
Application number
CH804472A
Other languages
German (de)
Original Assignee
Ashland Optical Corp
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 Ashland Optical Corp filed Critical Ashland Optical Corp
Publication of CH550653A publication Critical patent/CH550653A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/30—Mounting, exchanging or centering
    • B29C33/301—Modular mould systems [MMS], i.e. moulds built up by stacking mould elements, e.g. plates, blocks, rods
    • 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
    • G02C7/04—Contact lenses for the eyes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/76—Office equipment or accessories
    • B29L2031/7602—Maps

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)
  • Moulds For Moulding Plastics Or The Like (AREA)
CH804472A 1971-06-04 1972-05-31 DEVICE FOR SIMULTANEOUSLY CASTING A VARIETY OF PLASTIC OPTICAL LENSES. CH550653A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15004071A 1971-06-04 1971-06-04

Publications (1)

Publication Number Publication Date
CH550653A true CH550653A (en) 1974-06-28

Family

ID=22532855

Family Applications (1)

Application Number Title Priority Date Filing Date
CH804472A CH550653A (en) 1971-06-04 1972-05-31 DEVICE FOR SIMULTANEOUSLY CASTING A VARIETY OF PLASTIC OPTICAL LENSES.

Country Status (6)

Country Link
AT (1) AT343350B (en)
CA (1) CA973671A (en)
CH (1) CH550653A (en)
GB (1) GB1347821A (en)
IE (1) IE38112B1 (en)
IL (1) IL39580A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219241A (en) * 1988-03-02 1989-12-06 Pilkington Visioncare Holdings Method and apparatus for moulding and casting using gated dies, and for moulding constant thickness lenses

Also Published As

Publication number Publication date
CA973671A (en) 1975-09-02
IE38112L (en) 1972-12-04
IL39580A (en) 1975-03-13
IL39580A0 (en) 1972-07-26
ATA478672A (en) 1977-09-15
GB1347821A (en) 1974-02-27
IE38112B1 (en) 1978-01-04
AT343350B (en) 1978-05-26

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Legal Events

Date Code Title Description
PL Patent ceased