GB229039A - Improvements in and relating to a system of and apparatus for concentrating and projecting light and other forms of energy transmitted by wave motion - Google Patents

Improvements in and relating to a system of and apparatus for concentrating and projecting light and other forms of energy transmitted by wave motion

Info

Publication number
GB229039A
GB229039A GB31273/23A GB3127323A GB229039A GB 229039 A GB229039 A GB 229039A GB 31273/23 A GB31273/23 A GB 31273/23A GB 3127323 A GB3127323 A GB 3127323A GB 229039 A GB229039 A GB 229039A
Authority
GB
United Kingdom
Prior art keywords
light
source
focus
concentrating
relating
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
GB31273/23A
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.)
EDWARD SAMUEL CLAYTON
FREDERICK WALDERMAR ENGHOLM
Original Assignee
EDWARD SAMUEL CLAYTON
FREDERICK WALDERMAR ENGHOLM
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 EDWARD SAMUEL CLAYTON, FREDERICK WALDERMAR ENGHOLM filed Critical EDWARD SAMUEL CLAYTON
Priority to GB31273/23A priority Critical patent/GB229039A/en
Publication of GB229039A publication Critical patent/GB229039A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • 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
    • F21V7/04—Optical design
    • 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
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

229,039. Engholm, F. W., Gardner, A. A., Saunders, H. A., and Clayton, E. S. Dec. 12, 1923. Vehicle and like lamps.-In a vehicle or like lamp the source of light is arranged at the common focus of opposing reflectors, generated by conic sections. The opposing reflectors 2, 3, Fig. 1, are both parabolic and have a common focus 1. whereby light from a source at the focus 1 is projected in parallel rays through the aperture 4 in the front reflector 3. The front reflector may be a plane surface, when a convergent beam will be formed. A divergent beam is formed by a complete ellipsoidal reflector having an aperture at one end of its major axis and the source of light at its inner focus. To limit dazzle when using opposed parabolic reflectors, a tube 5, Fig. 5, is fitted in front of the opening 4, having a slight parabolic curvature. Reference has been directed by the Comptroller to Specifications 27853A/04; 14487/14; 17657/15, [Class 75 (ii), Lamp chimneys, &c.]; 103,830, 173,243, 200,647, and 225,282.
GB31273/23A 1923-12-12 1923-12-12 Improvements in and relating to a system of and apparatus for concentrating and projecting light and other forms of energy transmitted by wave motion Expired GB229039A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB31273/23A GB229039A (en) 1923-12-12 1923-12-12 Improvements in and relating to a system of and apparatus for concentrating and projecting light and other forms of energy transmitted by wave motion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31273/23A GB229039A (en) 1923-12-12 1923-12-12 Improvements in and relating to a system of and apparatus for concentrating and projecting light and other forms of energy transmitted by wave motion

Publications (1)

Publication Number Publication Date
GB229039A true GB229039A (en) 1925-02-19

Family

ID=10320648

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31273/23A Expired GB229039A (en) 1923-12-12 1923-12-12 Improvements in and relating to a system of and apparatus for concentrating and projecting light and other forms of energy transmitted by wave motion

Country Status (1)

Country Link
GB (1) GB229039A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437804A (en) * 1964-04-11 1969-04-08 Quarzlampen Gmbh Light transmitting device
US3494693A (en) * 1966-06-28 1970-02-10 William B Elmer Radiant energy projection
EP2009479A1 (en) * 2007-06-29 2008-12-31 Christie Digital Systems USA, Inc. A reflective iris
US7712924B2 (en) 2007-12-26 2010-05-11 Christie Digital Systems Usa, Inc. Optical device for adjusting the F-number of an elliptical lamp
US8011810B2 (en) 2007-12-26 2011-09-06 Christie Digital Systems Usa, Inc. Light integrator for more than one lamp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437804A (en) * 1964-04-11 1969-04-08 Quarzlampen Gmbh Light transmitting device
US3494693A (en) * 1966-06-28 1970-02-10 William B Elmer Radiant energy projection
EP2009479A1 (en) * 2007-06-29 2008-12-31 Christie Digital Systems USA, Inc. A reflective iris
US7712924B2 (en) 2007-12-26 2010-05-11 Christie Digital Systems Usa, Inc. Optical device for adjusting the F-number of an elliptical lamp
US8011810B2 (en) 2007-12-26 2011-09-06 Christie Digital Systems Usa, Inc. Light integrator for more than one lamp

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