GB752498A - Improvements in and relating to coatings for optical elements - Google Patents

Improvements in and relating to coatings for optical elements

Info

Publication number
GB752498A
GB752498A GB13020/54A GB1302054A GB752498A GB 752498 A GB752498 A GB 752498A GB 13020/54 A GB13020/54 A GB 13020/54A GB 1302054 A GB1302054 A GB 1302054A GB 752498 A GB752498 A GB 752498A
Authority
GB
United Kingdom
Prior art keywords
layer
coatings
relating
coated
optical elements
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
GB13020/54A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB752498A publication Critical patent/GB752498A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/285—Interference filters comprising deposited thin solid films

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Surface Treatment Of Optical Elements (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

752,498. Optical systems. KODAK, Ltd. May 4, 1954 [May 4, 1953], No. 13020/54. Drawings to Specification. Class 97 (1). An optical element is coated with a high refractive index interference layer of titanium nitride. The layer may be applied directly to the element, if a lens, or applied alternately with layers of magnesium fluoride. The layer may be formed by deposition of metallic titanium on the element by thermal evaporation under vacuum and subsequent heating of the coated element in an atmosphere of nitrogen preferably at a temperature between 400‹ C. and the softening point of the element.
GB13020/54A 1953-05-04 1954-05-04 Improvements in and relating to coatings for optical elements Expired GB752498A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US752498XA 1953-05-04 1953-05-04

Publications (1)

Publication Number Publication Date
GB752498A true GB752498A (en) 1956-07-11

Family

ID=22124482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13020/54A Expired GB752498A (en) 1953-05-04 1954-05-04 Improvements in and relating to coatings for optical elements

Country Status (1)

Country Link
GB (1) GB752498A (en)

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