GB534814A - Apparatus for projecting or condensing light or other rays - Google Patents
Apparatus for projecting or condensing light or other raysInfo
- Publication number
- GB534814A GB534814A GB18638/39A GB1863839A GB534814A GB 534814 A GB534814 A GB 534814A GB 18638/39 A GB18638/39 A GB 18638/39A GB 1863839 A GB1863839 A GB 1863839A GB 534814 A GB534814 A GB 534814A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- lens
- spherical
- annular
- rays
- 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
- 230000005855 radiation Effects 0.000 abstract 2
- 229920001875 Ebonite Polymers 0.000 abstract 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
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
- F21S41/30—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
- 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
- F21S41/168—Incandescent light sources, e.g. filament or halogen lamps having a filament arranged transversally to the optical axis of the illuminating device
-
- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- 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
- F21S41/435—Hoods or cap-shaped
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Elements Other Than Lenses (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
534,814. Directive radio systems. TRASK, W. E. J. June 27, 1939, No. 18638. [Class 40 (v)] [Also in Group XI] Apparatus for producing a parallel beam of light or other radiation such as infra-red rays or short wireless waves comprises a parabolic reflector 1 having a source of light 17 or other radiation at its focus 9, a lens 16 with focus at 9, a spherical reflector 18 having its centre at 9 and subtending the same angle at the focal point as the lens and a spherical annular reflector 19 having its centre of curvature at 9. The spherical annular reflector 19 and the lens 16 are carried by a mount 12 supported by struts 11 detachably secured to the rim of the parabolic reflector 1. The outer refracting face of the lens may be ellipsoidal and the inner face of the lens may be stepped. Instead of the reflector 18 being in front of the reflector 1, as shown, it may be positioned behind or formed integral with the reflector 1. Instead of the annular reflector 19 being arranged near the source of night it may be arranged near the periphery of the reflector 1. Alternatively the reflectors 18, 19 may be dispensed with and the lamp bulb 8 may be spherical and silvered internally behind the filament and may be provided with an annular silvered zone in front of the filament. By using ebonite lenses infra-red rays may be transmitted and by using quartz lenses the apparatus may be employed with ultra violet rays. For transmitting short wireless waves having a length of 18 centimetres, more or less, pitch may be used as a refractive agent.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB18638/39A GB534814A (en) | 1939-06-27 | 1939-06-27 | Apparatus for projecting or condensing light or other rays |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB18638/39A GB534814A (en) | 1939-06-27 | 1939-06-27 | Apparatus for projecting or condensing light or other rays |
Publications (1)
Publication Number | Publication Date |
---|---|
GB534814A true GB534814A (en) | 1941-03-19 |
Family
ID=10115890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18638/39A Expired GB534814A (en) | 1939-06-27 | 1939-06-27 | Apparatus for projecting or condensing light or other rays |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB534814A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2558569A1 (en) * | 1984-01-24 | 1985-07-26 | Tsuyama Mfg Co Ltd | IMPROVEMENTS IN LIGHTING FIXTURES FOR BICYCLES AND OTHER APPLICATIONS |
-
1939
- 1939-06-27 GB GB18638/39A patent/GB534814A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2558569A1 (en) * | 1984-01-24 | 1985-07-26 | Tsuyama Mfg Co Ltd | IMPROVEMENTS IN LIGHTING FIXTURES FOR BICYCLES AND OTHER APPLICATIONS |
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