GB854358A - Coated optical elements - Google Patents

Coated optical elements

Info

Publication number
GB854358A
GB854358A GB14729/59A GB1472959A GB854358A GB 854358 A GB854358 A GB 854358A GB 14729/59 A GB14729/59 A GB 14729/59A GB 1472959 A GB1472959 A GB 1472959A GB 854358 A GB854358 A GB 854358A
Authority
GB
United Kingdom
Prior art keywords
layer
silicon
germanium
optical elements
coated optical
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
GB14729/59A
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.)
Ford Motor Co Ltd
Ford Motor Co
Original Assignee
Ford Motor Co Ltd
Ford Motor Co
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 Ford Motor Co Ltd, Ford Motor Co filed Critical Ford Motor Co Ltd
Publication of GB854358A publication Critical patent/GB854358A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B29D11/0073—Optical laminates

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Surface Treatment Of Optical Elements (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

An optical element having a resistance to scratching and abrasion of the same order as glass comprises a substrate e.g. of polymethylmethacrylate, a layer of germanium on the substrate, and a layer of an oxide of silicon upon the germanium layer. The element may be a lens, window, windshield or mirror. The layers are applied by vacuum evaporation, and preferably have thicknesses of 100-1,000 .u. for the germanium and 1,000-20,000 .u. for the silicon oxide. As described, the silicon oxide layer is formed by evaporating an equimolecular mixture of silicon and silicon dioxide in the presence of oxygen or air.
GB14729/59A 1958-05-14 1959-04-30 Coated optical elements Expired GB854358A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US854358XA 1958-05-14 1958-05-14

Publications (1)

Publication Number Publication Date
GB854358A true GB854358A (en) 1960-11-16

Family

ID=22191574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14729/59A Expired GB854358A (en) 1958-05-14 1959-04-30 Coated optical elements

Country Status (1)

Country Link
GB (1) GB854358A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140581A (en) * 1983-05-23 1984-11-28 American Optical Corp Anti-static and/or anti-reflective abrasion-resistant ophthalmic lenses
US4632527A (en) * 1983-06-03 1986-12-30 American Optical Corporation Anti-static ophthalmic lenses
GB2209241A (en) * 1987-08-31 1989-05-04 Shin Kobe Electric Machinery Lead accumulator
GB2291888A (en) * 1984-06-08 1996-02-07 Barr & Stroud Ltd Optical coating

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140581A (en) * 1983-05-23 1984-11-28 American Optical Corp Anti-static and/or anti-reflective abrasion-resistant ophthalmic lenses
US4632527A (en) * 1983-06-03 1986-12-30 American Optical Corporation Anti-static ophthalmic lenses
GB2291888A (en) * 1984-06-08 1996-02-07 Barr & Stroud Ltd Optical coating
GB2291888B (en) * 1984-06-08 1996-06-26 Barr & Stroud Ltd Optical coating
GB2209241A (en) * 1987-08-31 1989-05-04 Shin Kobe Electric Machinery Lead accumulator
GB2209241B (en) * 1987-08-31 1992-04-15 Shin Kobe Electric Machinery Lead accumulators

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