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GB338334A - Improvements in or relating to light filters for increasing and producing colour contrasts - Google Patents

Improvements in or relating to light filters for increasing and producing colour contrasts

Info

Publication number
GB338334A
GB338334A GB32869/29A GB3286929A GB338334A GB 338334 A GB338334 A GB 338334A GB 32869/29 A GB32869/29 A GB 32869/29A GB 3286929 A GB3286929 A GB 3286929A GB 338334 A GB338334 A GB 338334A
Authority
GB
United Kingdom
Prior art keywords
glass
oxide
relating
increasing
light filters
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
GB32869/29A
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.)
Deutsche Gasgluehlicht AG Auergesellschaft
Original Assignee
Deutsche Gasgluehlicht AG Auergesellschaft
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 Deutsche Gasgluehlicht AG Auergesellschaft filed Critical Deutsche Gasgluehlicht AG Auergesellschaft
Publication of GB338334A publication Critical patent/GB338334A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/12—Toothpick holders
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/10—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels to produce uniformly-coloured transparent products
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/02—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for simulating daylight

Landscapes

  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Eyeglasses (AREA)
  • Optical Filters (AREA)

Abstract

338,334. Deutsche Gasgl³hlicht- Auer-Ges., (Assignees of Weidert, F.). Dec. 15, 1928, [Convention date]. Colour filters.-A light filter for accentuating colour contrasts is made of glass that is coloured with neodymium oxide. Other colouring materials may be incorporated with the glass to securethe desired optical effect. For example, cerium oxide may be added to absorb ultraviolet rays, or chromium oxide or praseodymium oxide may be used to make objects coloured green appear more pronounced. The glass may be used for spectacle lenses, for obtaining special illuminating effects, or for separating narrow bands of the spectrum.
GB32869/29A 1928-12-15 1929-10-29 Improvements in or relating to light filters for increasing and producing colour contrasts Expired GB338334A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE338334X 1928-12-15

Publications (1)

Publication Number Publication Date
GB338334A true GB338334A (en) 1930-11-20

Family

ID=6222443

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32869/29A Expired GB338334A (en) 1928-12-15 1929-10-29 Improvements in or relating to light filters for increasing and producing colour contrasts

Country Status (2)

Country Link
FR (2) FR338334A (en)
GB (1) GB338334A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216808A (en) * 1962-07-12 1965-11-09 Owens Illinois Glass Co Neutron-absorptive glass
US3250721A (en) * 1962-06-27 1966-05-10 Eastman Kodak Co Phosphate glass for laser use
US3254031A (en) * 1962-06-27 1966-05-31 Eastman Kodak Co Borate glass for laser use
GB2196625A (en) * 1986-09-25 1988-05-05 Downing Nicholas Peter Damien Ultra violet transmitting means

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250721A (en) * 1962-06-27 1966-05-10 Eastman Kodak Co Phosphate glass for laser use
US3254031A (en) * 1962-06-27 1966-05-31 Eastman Kodak Co Borate glass for laser use
US3216808A (en) * 1962-07-12 1965-11-09 Owens Illinois Glass Co Neutron-absorptive glass
GB2196625A (en) * 1986-09-25 1988-05-05 Downing Nicholas Peter Damien Ultra violet transmitting means

Also Published As

Publication number Publication date
FR338334A (en) 1904-05-16
FR684659A (en) 1930-06-30

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