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 motionInfo
- 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
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.
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)
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 |
-
1923
- 1923-12-12 GB GB31273/23A patent/GB229039A/en not_active Expired
Cited By (5)
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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