GB537591A - Improvements in low reflectance glass - Google Patents

Improvements in low reflectance glass

Info

Publication number
GB537591A
GB537591A GB7672/40A GB767240A GB537591A GB 537591 A GB537591 A GB 537591A GB 7672/40 A GB7672/40 A GB 7672/40A GB 767240 A GB767240 A GB 767240A GB 537591 A GB537591 A GB 537591A
Authority
GB
United Kingdom
Prior art keywords
glass
april
layers
base member
light
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
GB7672/40A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB537591A publication Critical patent/GB537591A/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)
  • Joining Of Glass To Other Materials (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

537,591. Windows. BRITISH THOMSONHOUSTON CO., Ltd.. April 29, 1940, No. 7672. Convention date. April 28, 1939. [Class 20 (iii)] [Also in Group XXIII] A light transmitting body of low reflecting power comprises a base member of soda-lime glass covered with a very thin layer of a second glass containing a metallic constituent that imparts to this glass a relatively high refractive index, the second glass having the metallic constituent removed to a depth sufficient to reduce the reflectivity of the body as a whole. The base member may consist of a sheet 1 of sodalime glass to which is applied, for instance, by fusion, layers 2 of glass containing lead or barium, the thickness of each layer being of the order of 5 microns. The layers are then etched to remove the lead or barium compounds to a suitable depth, for example a quarter wavelength of yellow light, to form superficial films 3 which will produce interference effects of such a character as materially to reduce loss of light by reflection.
GB7672/40A 1939-04-28 1940-04-29 Improvements in low reflectance glass Expired GB537591A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US537591XA 1939-04-28 1939-04-28

Publications (1)

Publication Number Publication Date
GB537591A true GB537591A (en) 1941-06-27

Family

ID=21986343

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7672/40A Expired GB537591A (en) 1939-04-28 1940-04-29 Improvements in low reflectance glass

Country Status (1)

Country Link
GB (1) GB537591A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531945A (en) * 1947-04-05 1950-11-28 American Optical Corp Reflection reducing coatings having uniform reflection for all wave lengths of lightand method of forming such coatings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531945A (en) * 1947-04-05 1950-11-28 American Optical Corp Reflection reducing coatings having uniform reflection for all wave lengths of lightand method of forming such coatings

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