GB558867A - Improvements in methods of coating substances on surfaces - Google Patents

Improvements in methods of coating substances on surfaces

Info

Publication number
GB558867A
GB558867A GB1020142A GB1020142A GB558867A GB 558867 A GB558867 A GB 558867A GB 1020142 A GB1020142 A GB 1020142A GB 1020142 A GB1020142 A GB 1020142A GB 558867 A GB558867 A GB 558867A
Authority
GB
United Kingdom
Prior art keywords
pellet
bead
filament
heated
coatings
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
GB1020142A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to GB1020142A priority Critical patent/GB558867A/en
Publication of GB558867A publication Critical patent/GB558867A/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
    • G02B1/111—Anti-reflection coatings using layers comprising organic materials

Landscapes

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

Abstract

558,867. Reflection-reducing coatings for glass &c. KODAK, Ltd. (Eastman Kodak Co.). July 21, 1942, No. 10201. [Class 97 (i)] Reflection - reducing coatings on glass or other coatings comprising salts are deposited by evaporating in a vacuum from a bead of the salt in a heated filament, the bead being formed from a pellet compacted of the salt only and in such a manner as to be porous and substantially free from closed chambers. As shown, the pellet is supported in a filament 15 heated by an electric current supplied through leads 16, and, with lenses 14 to be coated &c. is enclosed in an evacuated bell jar 10. The pellet is first heated to form a bead, and then a solenoid 18 is energized to release a detent 19 holding a pivoted shield 17 ; deposition on the lens surfaces occurs when the shield falls. Various forms of pellet and filament are described. The pellet may be formed by powdering the salts, placing the powder in a cylindrical hole drilled in a plate, and compacting it therein by pressure with the flat end of the drill used to form the hole. Specification 538,272 is referred to.
GB1020142A 1942-07-21 1942-07-21 Improvements in methods of coating substances on surfaces Expired GB558867A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1020142A GB558867A (en) 1942-07-21 1942-07-21 Improvements in methods of coating substances on surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1020142A GB558867A (en) 1942-07-21 1942-07-21 Improvements in methods of coating substances on surfaces

Publications (1)

Publication Number Publication Date
GB558867A true GB558867A (en) 1944-01-25

Family

ID=9963436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1020142A Expired GB558867A (en) 1942-07-21 1942-07-21 Improvements in methods of coating substances on surfaces

Country Status (1)

Country Link
GB (1) GB558867A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967303C (en) * 1953-11-12 1957-10-31 Leitz Ernst Gmbh Process for protecting the surfaces of photographic layers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967303C (en) * 1953-11-12 1957-10-31 Leitz Ernst Gmbh Process for protecting the surfaces of photographic layers

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