GB540480A - Improvements relating to reflectors - Google Patents

Improvements relating to reflectors

Info

Publication number
GB540480A
GB540480A GB2329/41A GB232941A GB540480A GB 540480 A GB540480 A GB 540480A GB 2329/41 A GB2329/41 A GB 2329/41A GB 232941 A GB232941 A GB 232941A GB 540480 A GB540480 A GB 540480A
Authority
GB
United Kingdom
Prior art keywords
layer
reflectors
stop
copper
lacquer
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
GB2329/41A
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.)
Mond Nickel Co Ltd
Original Assignee
Mond Nickel Co 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 Mond Nickel Co Ltd filed Critical Mond Nickel Co Ltd
Publication of GB540480A publication Critical patent/GB540480A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/08—Mirrors; Reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/10—Mirrors with curved faces

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

540,480. Reflectors. MOND NICKEL CO., Ltd. Feb. 20, 1941, No. 2329. Convention date, Feb. 26, 1940. [Class 97 (i)] [Also in Group XXXVI] In producing reflectors such as reflectors for searchlights and submarine mirrors, a matrix is first prepared by the electrodeposition on the concave surface of a glass mould 21, Fig. 13, of a layer of silver 22 followed by a thicker layer 23 of copper, applying a stop-off layer 24 of lacquer &c. and stripping the whole from the mould. On the convex surface of the matrix so formed a layer 25, Fig. 18, of rhodium is deposited followed by a thicker layer 26 of gold, platinum, or palladium, or an alloy of these metals. Over the last-mentioned layer a thick supporting layer 27 of copper or nickel is applied and covered with a stop-off layer 28 of lacquer &c. Stop-off layer 24 is now taken off and the silver and copper layers 22, 23, removed by nitric acid or by electrolysis, to produce the mirror shown in Fig. 20.
GB2329/41A 1940-02-26 1941-02-20 Improvements relating to reflectors Expired GB540480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US540480XA 1940-02-26 1940-02-26

Publications (1)

Publication Number Publication Date
GB540480A true GB540480A (en) 1941-10-17

Family

ID=21988434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2329/41A Expired GB540480A (en) 1940-02-26 1941-02-20 Improvements relating to reflectors

Country Status (1)

Country Link
GB (1) GB540480A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2237208A1 (en) * 1972-07-03 1975-02-07 Raytheon Co
EP0116173A1 (en) * 1983-02-11 1984-08-22 Allied Corporation Noble-metal alloy front-surface coating of silver reflectors
NL9401913A (en) * 1993-11-17 1995-06-16 Asahi Optical Co Ltd Composite optical elements of the reflection type.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2237208A1 (en) * 1972-07-03 1975-02-07 Raytheon Co
EP0116173A1 (en) * 1983-02-11 1984-08-22 Allied Corporation Noble-metal alloy front-surface coating of silver reflectors
NL9401913A (en) * 1993-11-17 1995-06-16 Asahi Optical Co Ltd Composite optical elements of the reflection type.
US5717532A (en) * 1993-11-17 1998-02-10 Asahi Kogaku Kogyo Kabushiki Kaisha Reflection-type compound optical elements

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