GB1238125A - - Google Patents

Info

Publication number
GB1238125A
GB1238125A GB4802969A GB1238125DA GB1238125A GB 1238125 A GB1238125 A GB 1238125A GB 4802969 A GB4802969 A GB 4802969A GB 1238125D A GB1238125D A GB 1238125DA GB 1238125 A GB1238125 A GB 1238125A
Authority
GB
United Kingdom
Prior art keywords
plastics
transparent
sept
heading
acrylonitrile
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
GB4802969A
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 filed Critical
Publication of GB1238125A publication Critical patent/GB1238125A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/113—Anti-reflection coatings using inorganic layer materials only
    • G02B1/115—Multilayers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00865—Applying coatings; tinting; colouring

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

1,238,125. Coated plastics elements. POLAROID CORP. Sept.30, 1969, No.48029/69. Heading G2J. A transparent plastics element 1 has an antireflection coating 2 bonded to a surface by means of a transparent aluminium oxide 3 of ten to thirty Angstroms thickness. The element 1 may be polymethyl methacrylate, polystyrene, acrylonitrile and polycarbonate plastics, or their copolymers, and the anti-reflection coating may be magnesium or calcium fluorides.
GB4802969A 1969-09-30 1969-09-30 Expired GB1238125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4802969 1969-09-30

Publications (1)

Publication Number Publication Date
GB1238125A true GB1238125A (en) 1971-07-07

Family

ID=10447112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4802969A Expired GB1238125A (en) 1969-09-30 1969-09-30

Country Status (1)

Country Link
GB (1) GB1238125A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039125A2 (en) * 1980-04-25 1981-11-04 Optical Coating Laboratory, Inc. Optical article and method
GB2188446A (en) * 1986-03-24 1987-09-30 Slettemoen Gudmunn Image detector with wave-front converter to reduce undesirable reflections
DE3902456A1 (en) * 1988-01-29 1989-08-03 Asahi Optical Co Ltd Composite structure of optical materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039125A2 (en) * 1980-04-25 1981-11-04 Optical Coating Laboratory, Inc. Optical article and method
EP0039125A3 (en) * 1980-04-25 1981-11-18 Optical Coating Laboratory, Inc. Optical article and method
GB2188446A (en) * 1986-03-24 1987-09-30 Slettemoen Gudmunn Image detector with wave-front converter to reduce undesirable reflections
DE3902456A1 (en) * 1988-01-29 1989-08-03 Asahi Optical Co Ltd Composite structure of optical materials

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees