GB2170309A - A lamp unit - Google Patents
A lamp unit Download PDFInfo
- Publication number
- GB2170309A GB2170309A GB08529594A GB8529594A GB2170309A GB 2170309 A GB2170309 A GB 2170309A GB 08529594 A GB08529594 A GB 08529594A GB 8529594 A GB8529594 A GB 8529594A GB 2170309 A GB2170309 A GB 2170309A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- lamp unit
- focusing
- light guide
- lamp
- 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.)
- Withdrawn
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
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
- F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
- F21S8/065—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension multi-branched, e.g. a chandelier
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
- G02B6/0006—Coupling light into the fibre
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Endoscopes (AREA)
Abstract
A lamp unit comprising a light emitter, a housing in which the light emitter is mounted, a plurality of light guides which are mounted on the housing, each light guide having a near end which, in use, receives light from the light emitter and a remote end which emits light which is transmitted along the respective light guide, and means for focusing the light which is, in use, emitted from the light emitter into the near ends of the light guides.
Description
SPECIFICATION
A lamp unit
The present invention relates to a lamp unit, and in particular to an electrical lamp which is adapted to be suspended from a ceiling.
The present invention provides a lamp unit comprising a light emitter, a housing in which the light emitter is mounted, a plurality of light guides which are mounted on the housing, each light guide having a near end which, in use, receives light from the light emitter and a remote end which emits light which is transmitted along the respective light guide, and means for focusing the light which is, in use, emitted from the light emitter onto the near ends of the light guides.
Preferably, the light emitter is an electric bulb and the lamp unit is adapted to be suspended from a ceiling.
The means for focusing may be a concave reflector and the near ends of the light guides are located in a common region on which light from the light emitter can be focused by the concave reflector.
A particular preferred concave reflector is a parabolic reflector at the focus of which the light emitter is located.
Desirably, the means for focusing are mounted for movement along an axis whereby the means for focusing can be moved so as to maintain the focus of light at the rear ends of the light guides.
Each light guide may comprise one or more optical fibres.
The present invention further provides an improved lamp, included among those that, having a central core and branching off from it multiple arms, in each one of its free ends there is a light spot, characterised by the fact, that the core is made up of a tube-shaped element that contains inside of it an axially movable parabola and that contains in its focus a traditional light generating element, concentrating the emission of the same on an adjustable plug that like a plug closes up one of the ends of the tube-shaped core, converging in one point of the catcher, one of the ends of the multiple optical fibers conducting the light made in a typical manner, which, going through the multiple arms with an irregular shape, have the second end as the emission point of the corresponding arm.
An embodiment of the present invention will now be described by way of example only, with reference to the accompanying drawing in which the single Figure is a longitudinal part-sectional view of a lamp unit in accordance with the present invention.
Referring to the Figure, an incandescent light bulb 1, such as a traditional light bulb, which is connected to a source of electric power by electrically conductive wires 2 is disposed at the focus of a light flow focusing parabolic reflector 3 which is mounted within an elongate tubular housing 4. At the bottom end of the housing 4 is a hole in the end wall thereof in which a correspondingly sized plug 3 is slidably mounted so as to be axially movable in and out of the tubular housing 4. The hole has a smaller diameter than that of the tubular housing 4. At the bottom of plug 5 is mounted a connector A for a plurality of elongate light guide arms 6 which include one or more optical fibres. Each light guide arm 6 has a near end and the near ends converge to a region within the plug 5. The remote ends of the light guide arms 6 diverge away from the connector 4 in any desired manner.
In use, light which is emitted from the light bulb 1 is reflected off the inner surface of the parabolic reflector 3 and is focused by the parabolic reflector 3 onto the region in which the near ends of the light guide arms 6 are situated. The light is then transmitted along the light guide arms 6 and is emitted at the respective remote ends of the light guide arms 6.
The plug 5 can be axially moved in the hole as desired so as to adjust the height of the light emitting remote ends of the light guide arms 6. The parabolic reflector 3 is also axially movable in the housing 4.
The present invention can provide a ceiling lamp having multiple arms in which, with a single light generating element and by using light transmission by optical fibres, it is possible to distribute light waves which emanate from the single light source to all of the arms.
in addition, the lamp is adjustable without reducing the efficiency of light distribution.
The preferred embodiment of the present invention provides a lamp which is effective and efficient in distributing light and is relatively inexpensive to manufacture and operate.
It will be understood to a person skilled in the art that the illustrated embodiment is an example of the invention and that the dimensions, materials and proportions of the lamp unit may be varied as desired without departing from the scope of the invention as defined in the appended claims.
1. A lamp unit comprising a light emitter, a housing in which the light emitter is mounted, a plurality of light guides which are mounted on the housing, each light guide having a near end which, in use, receives light from the light emitter and a remote end which emits light which is transmitted along the respective light guide, and means for focusing the light which is, in use, emitted from the light emitter onto the near ends of the light guides.
2. A lamp unit according to Claim 1, wherein the light emitter is an electric bulb and the lamp unit is adapted to be suspended from a ceiling.
3. A lamp unit according to Claim 1 or
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (8)
1. A lamp unit comprising a light emitter, a housing in which the light emitter is mounted, a plurality of light guides which are mounted on the housing, each light guide having a near end which, in use, receives light from the light emitter and a remote end which emits light which is transmitted along the respective light guide, and means for focusing the light which is, in use, emitted from the light emitter onto the near ends of the light guides.
2. A lamp unit according to Claim 1, wherein the light emitter is an electric bulb and the lamp unit is adapted to be suspended from a ceiling.
3. A lamp unit according to Claim 1 or
Claim 2, wherein the means for focusing is a concave reflector and the near ends of the light guids are located in a common region on which light from the light emitter can be focused by the concave reflector.
4. A lamp unit according to Claim 3, wherein the concave reflector is a parabolic reflector and the light emitter is located at the focus of the parabolic reflector.
5. A lamp unit according to any foregoing claim, wherein the means for focusing are mounted for movement along an axis whereby the means for focusing can be moved so as to maintain the focus of light at the near ends of the light guides.
6. A lamp unit according to any foregoing claim, wherein each light guide comprises one or more optical fibres.
7. A lamp unit substantially as herebefore described with reference to the accompanying drawing.
8. An improved lamp, included among those that, having a central core and branching off from it multiple arms, in each one of its free ends there is a light spot, characterised by the fact, that the core is made up of a tube-shaped element that contains inside of it an axially moveable parabola and that contains in its focus a traditional light generating element, concentrating the emission of the same on an adjustable plug that like a plug closes up one of the ends of the tube-shaped core, converging in one point of the catcher, one of the ends of the multiple optical fibers conducting the light made in a typical manner, which, going through the multiple arms with an irregular shape, have the second end as the emission point of the corresponding arm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES1984283390U ES283390Y (en) | 1984-12-13 | 1984-12-13 | PERFECTED LAMP. |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8529594D0 GB8529594D0 (en) | 1986-01-08 |
GB2170309A true GB2170309A (en) | 1986-07-30 |
Family
ID=8433430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08529594A Withdrawn GB2170309A (en) | 1984-12-13 | 1985-12-02 | A lamp unit |
Country Status (3)
Country | Link |
---|---|
ES (1) | ES283390Y (en) |
FR (1) | FR2574901B3 (en) |
GB (1) | GB2170309A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109000185B (en) * | 2018-09-26 | 2023-11-03 | 欧普照明股份有限公司 | Lighting device and lamp |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1213652A (en) * | 1967-05-03 | 1970-11-25 | Lucas Industries Ltd | Light sources |
-
1984
- 1984-12-13 ES ES1984283390U patent/ES283390Y/en not_active Expired
-
1985
- 1985-12-02 GB GB08529594A patent/GB2170309A/en not_active Withdrawn
- 1985-12-12 FR FR8518424A patent/FR2574901B3/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1213652A (en) * | 1967-05-03 | 1970-11-25 | Lucas Industries Ltd | Light sources |
Also Published As
Publication number | Publication date |
---|---|
FR2574901A1 (en) | 1986-06-20 |
ES283390U (en) | 1985-05-01 |
GB8529594D0 (en) | 1986-01-08 |
FR2574901B3 (en) | 1987-07-10 |
ES283390Y (en) | 1985-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |