GB319869A - Improved anti-dazzle apparatus for road traffic - Google Patents

Improved anti-dazzle apparatus for road traffic

Info

Publication number
GB319869A
GB319869A GB21533/28A GB2153328A GB319869A GB 319869 A GB319869 A GB 319869A GB 21533/28 A GB21533/28 A GB 21533/28A GB 2153328 A GB2153328 A GB 2153328A GB 319869 A GB319869 A GB 319869A
Authority
GB
United Kingdom
Prior art keywords
parallel
glass packs
road traffic
dazzle
analysers
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
GB21533/28A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB21533/28A priority Critical patent/GB319869A/en
Publication of GB319869A publication Critical patent/GB319869A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/135—Polarised

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

319,869. Smith, R, A., and Smith, J. E. April 10, 1929. Anti-dazzle screens.-In an anti-dazzle arrangement for road traffic in which use is made of plane polarized light, the beam or beams projected by a vehicle headlamp or a stationary lamp is or are plane polarized at the source and is or are viewed by light reflected or refracted by one or more analysers suitably orientated and situated, for example, on the vehicle windscreen. The analysers may be provided with absorbers, reflectors, or diffusers to act as shields preventing any extraneous light proceeding in the direction of the observer. The efficiency of an analyser may be increased by using glass packs or the equivalents either in series or in parallel or both in series and in parallel. Any of the mirrors or glass packs may be pivotally mounted so that they may be set in any desired angular position. The Figure shows an analyser comprising two glass packs c, c' arranged in parallel and which may be combined with further glass packs c<2>, c<3>.
GB21533/28A 1929-04-10 1929-04-10 Improved anti-dazzle apparatus for road traffic Expired GB319869A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB21533/28A GB319869A (en) 1929-04-10 1929-04-10 Improved anti-dazzle apparatus for road traffic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21533/28A GB319869A (en) 1929-04-10 1929-04-10 Improved anti-dazzle apparatus for road traffic

Publications (1)

Publication Number Publication Date
GB319869A true GB319869A (en) 1929-10-03

Family

ID=10164494

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21533/28A Expired GB319869A (en) 1929-04-10 1929-04-10 Improved anti-dazzle apparatus for road traffic

Country Status (1)

Country Link
GB (1) GB319869A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476014A (en) * 1944-04-17 1949-07-12 Wright Edwin Herbert Light polariser for producing light beams polarised in planes mutually at right angles from a single light beam
DE765718C (en) * 1938-04-30 1952-11-04 Westfaelische Metall Ind A G L Headlight for installation in an opening in the casing of a vehicle, in particular a motor vehicle
US4664484A (en) * 1985-08-19 1987-05-12 Hines Stephen P Variable light attenuator
US4686986A (en) * 1981-09-02 1987-08-18 Marta Fenyo Method and apparatus for promoting healing
US4746201A (en) * 1967-03-06 1988-05-24 Gordon Gould Polarizing apparatus employing an optical element inclined at brewster's angle
US6328449B1 (en) * 1984-05-03 2001-12-11 The United States Of America As Represented By The Secretary Of The Navy Brewster-angle dispersion filter (U)
CN104763958A (en) * 2014-01-08 2015-07-08 林志厚 Illumination light separation control device of automotive headlamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE765718C (en) * 1938-04-30 1952-11-04 Westfaelische Metall Ind A G L Headlight for installation in an opening in the casing of a vehicle, in particular a motor vehicle
US2476014A (en) * 1944-04-17 1949-07-12 Wright Edwin Herbert Light polariser for producing light beams polarised in planes mutually at right angles from a single light beam
US4746201A (en) * 1967-03-06 1988-05-24 Gordon Gould Polarizing apparatus employing an optical element inclined at brewster's angle
US4686986A (en) * 1981-09-02 1987-08-18 Marta Fenyo Method and apparatus for promoting healing
US6328449B1 (en) * 1984-05-03 2001-12-11 The United States Of America As Represented By The Secretary Of The Navy Brewster-angle dispersion filter (U)
US4664484A (en) * 1985-08-19 1987-05-12 Hines Stephen P Variable light attenuator
CN104763958A (en) * 2014-01-08 2015-07-08 林志厚 Illumination light separation control device of automotive headlamp

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