GB515476A - Light diffusing means for lamps - Google Patents

Light diffusing means for lamps

Info

Publication number
GB515476A
GB515476A GB15815/38A GB1581538A GB515476A GB 515476 A GB515476 A GB 515476A GB 15815/38 A GB15815/38 A GB 15815/38A GB 1581538 A GB1581538 A GB 1581538A GB 515476 A GB515476 A GB 515476A
Authority
GB
United Kingdom
Prior art keywords
lamps
lamp
light diffusing
diffusing means
cover glass
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
GB15815/38A
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.)
WALMSLEY PATENT LAMP Co L
Original Assignee
WALMSLEY PATENT LAMP Co L
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 WALMSLEY PATENT LAMP Co L filed Critical WALMSLEY PATENT LAMP Co L
Priority to GB15815/38A priority Critical patent/GB515476A/en
Publication of GB515476A publication Critical patent/GB515476A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • 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
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

515,476. Etched and frosted lamp fronts. CHALLIS, W. J. H., and WALMSLEY PATENT LAMP CO., Ltd. May 26, 1938, No. 15815. [Class 75 (ii)] A light diffuser 12 of the type known through such Specifications as 353,303, 385,527 and 470,780 is mounted behind the cover glass of a lamp, the cover glass itself being composed of translucent and transparent areas as shown, the translucent parts being made by sandblasting, frosting &c. The transparent areas can be tinted.
GB15815/38A 1938-05-26 1938-05-26 Light diffusing means for lamps Expired GB515476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB15815/38A GB515476A (en) 1938-05-26 1938-05-26 Light diffusing means for lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15815/38A GB515476A (en) 1938-05-26 1938-05-26 Light diffusing means for lamps

Publications (1)

Publication Number Publication Date
GB515476A true GB515476A (en) 1939-12-06

Family

ID=10065990

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15815/38A Expired GB515476A (en) 1938-05-26 1938-05-26 Light diffusing means for lamps

Country Status (1)

Country Link
GB (1) GB515476A (en)

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