CA2425474A1 - Fibre optic street lighting fixtures - Google Patents
Fibre optic street lighting fixtures Download PDFInfo
- Publication number
- CA2425474A1 CA2425474A1 CA002425474A CA2425474A CA2425474A1 CA 2425474 A1 CA2425474 A1 CA 2425474A1 CA 002425474 A CA002425474 A CA 002425474A CA 2425474 A CA2425474 A CA 2425474A CA 2425474 A1 CA2425474 A1 CA 2425474A1
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- Prior art keywords
- light
- lighting system
- lamp
- lighting
- fiber optic
- 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.)
- Abandoned
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- 239000000835 fiber Substances 0.000 title claims abstract description 51
- 238000012384 transportation and delivery Methods 0.000 claims abstract description 12
- 238000005286 illumination Methods 0.000 claims abstract description 7
- 238000012423 maintenance Methods 0.000 claims description 7
- 241000319138 Amauris niavius Species 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 239000002360 explosive Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 10
- 238000001816 cooling Methods 0.000 description 6
- 239000013307 optical fiber Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910001507 metal halide Inorganic materials 0.000 description 2
- 150000005309 metal halides Chemical class 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 208000034423 Delivery Diseases 0.000 description 1
- 208000026097 Factitious disease Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 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
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/08—Lighting devices intended for fixed installation with a standard
- F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
- F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
-
- 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
- G02B6/0001—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
- G02B6/0008—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 the light being emitted at the end of the fibre
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
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)
Abstract
The invention proposes a novel method of streetlight construction, which utilizes fiber optic transmission of the light form a remote lamp-house to the radiating portion of the light fixture located at the top of the lamp standard or utility pole thereby providing certain advantages.
Utilizing light delivery via fiber optics, the streetlight uses a remote lamp-house to focus light onto fiber optics, which transmits the light to the radiating portion of the fixture and then dis-tributes the light to a certain area whereby illumination for human vision and safety is provided.
The delivered light is used for safety or decorative lighting and a reduction in general power consumption. The transmission is by use of single mode or dual mode fiber optic cable located in the tube sections of the lamp standard for protection of the components.
Utilizing light delivery via fiber optics, the streetlight uses a remote lamp-house to focus light onto fiber optics, which transmits the light to the radiating portion of the fixture and then dis-tributes the light to a certain area whereby illumination for human vision and safety is provided.
The delivered light is used for safety or decorative lighting and a reduction in general power consumption. The transmission is by use of single mode or dual mode fiber optic cable located in the tube sections of the lamp standard for protection of the components.
Description
~161~E al:'TISTRET LICI-tTINIpIX'TIJR~
L. l~flch~~l Roherts ~anzada Field of the Invention The field of the invention relates to "street lights" used to illuminate highways, parking lots, residential properties or other areas where large area illumination is required.
The illumination is provided by means of light deliverance using fiber optic cable from a re-motely placed lamp to the top of the pole where there is a lens, diffuser and/or cover to disperse the light evenly around an area to be illuminated.
The principal advantage of the invention is that the use of fiber optics allows the light source, it's electronics and electrical supply to be remotely mounted in a convenient location at the base of the light standard with passive fiber optic and other optical components used for light deliv-ery at the top of the light standard [streetlight].
This provides for an economic and more reliable system in the industry with reduced need for maintenance. When such maintenance is required, it can easily be performed from ground level without the use of ladders, bucket trucks or similar human elevation devices.
~z°
Background of the Invention Street lighting is used widely in public, city, rural, private and commercial sectors of the light-ing industry.
The lighting is used mainly in the production of sufficient light levels for safety and for decora-tive purposes, supplementing or replacing natural light, at levels suitable for the human eye to safely see the environment during hours of darkness.
The spectral characteristics required for human vision can be altered or enhanced by use of magnification processes, diffusers or colour filters. The colour spectrum would be in the visible spectl-um [420 to 700 nanometers] for the human eye to register the impact of light so as to safely see the surroundings.
A variety of street lighting systems are currently in use today. In almost all cases, high intensity light is directed or delivered to the lighted area - typically be means of lamps in fixtures located at the top of the light standard.
As light systems in the conventional visible spectrum range require high amounts of electrical power, a significant gradient in consumption is built up with the uses of conventional street lighting. Light sources used in the past are sodium, metal halide and mercury vapour.
F
A fiber optics based streetlight places a lens or diffuser on the distal [output] end of the fiber optic transmission system to ensure high intensities and maximum rate of visible light for the desired coverage area.
Airflow is employed in the cooling of the remote light source. T he airflow is contained around the bulb in the lamp-house enclosure, which is vented such that fresh, cool air can enter, and is then expelled once heated. Typically cooling fans or convection cooling is used in the process.
There are many disadvantages of the current technologies available on the market. The most dominant criteria is the access to the lamps) for maintenance. Lamps located at the usual top of the lamp standard increase operation and maintenance costs over the lifetime of the streetlight's use.
The present invention seeks to improve on current systems by means of providing the ability to:
l/ Locate the light source away from the top of the lamp standard. This is accomplished by using fiber optics to deliver the light to the radiating portion of the fixture.
L. l~flch~~l Roherts ~anzada Field of the Invention The field of the invention relates to "street lights" used to illuminate highways, parking lots, residential properties or other areas where large area illumination is required.
The illumination is provided by means of light deliverance using fiber optic cable from a re-motely placed lamp to the top of the pole where there is a lens, diffuser and/or cover to disperse the light evenly around an area to be illuminated.
The principal advantage of the invention is that the use of fiber optics allows the light source, it's electronics and electrical supply to be remotely mounted in a convenient location at the base of the light standard with passive fiber optic and other optical components used for light deliv-ery at the top of the light standard [streetlight].
This provides for an economic and more reliable system in the industry with reduced need for maintenance. When such maintenance is required, it can easily be performed from ground level without the use of ladders, bucket trucks or similar human elevation devices.
~z°
Background of the Invention Street lighting is used widely in public, city, rural, private and commercial sectors of the light-ing industry.
The lighting is used mainly in the production of sufficient light levels for safety and for decora-tive purposes, supplementing or replacing natural light, at levels suitable for the human eye to safely see the environment during hours of darkness.
The spectral characteristics required for human vision can be altered or enhanced by use of magnification processes, diffusers or colour filters. The colour spectrum would be in the visible spectl-um [420 to 700 nanometers] for the human eye to register the impact of light so as to safely see the surroundings.
A variety of street lighting systems are currently in use today. In almost all cases, high intensity light is directed or delivered to the lighted area - typically be means of lamps in fixtures located at the top of the light standard.
As light systems in the conventional visible spectrum range require high amounts of electrical power, a significant gradient in consumption is built up with the uses of conventional street lighting. Light sources used in the past are sodium, metal halide and mercury vapour.
F
A fiber optics based streetlight places a lens or diffuser on the distal [output] end of the fiber optic transmission system to ensure high intensities and maximum rate of visible light for the desired coverage area.
Airflow is employed in the cooling of the remote light source. T he airflow is contained around the bulb in the lamp-house enclosure, which is vented such that fresh, cool air can enter, and is then expelled once heated. Typically cooling fans or convection cooling is used in the process.
There are many disadvantages of the current technologies available on the market. The most dominant criteria is the access to the lamps) for maintenance. Lamps located at the usual top of the lamp standard increase operation and maintenance costs over the lifetime of the streetlight's use.
The present invention seeks to improve on current systems by means of providing the ability to:
l/ Locate the light source away from the top of the lamp standard. This is accomplished by using fiber optics to deliver the light to the radiating portion of the fixture.
2/ Use more efficient projection or integral reflector type lamps for energy savings and then transmit the light so generated through fiber optic cabling.
3/ Provide heat reduction and longevity of the system. This is achieved by means of control-ling the light deliverance to the fiber optics.
,~
41 Provide even illumination of the desired area by light delivery using fiber optics and an optical system andlor diffuser located at the top of the pole.
5/ Locate the lamp remotely from the illuminated area and conduct or transmit the light to the area to be illuminated by means of fiber optics to allow for flexibility in system configura-tion.
6/ Allow for the use of color changes in the strcetlight, either dynamically or statically, for seasonal or holiday or occasions.
7/ Reduce the costs of ownership and maintenance by remotely locating the light source such that it can be changed as needed from ground level without the use o.f ladders, bucket trucks or other elevating devices.
Brief Description of the Drawings Figurel - A two dimensional drawing of the external view of a streetlight [numbers in brackets refer to the numbered items in the drawing] with:
(1) A base to secure the assembly to a pedestal or other solid mounting surface;
(2) A secured access cover to permit access to the lamp-house for lamp changes;
(3) A light standard (pole) with internal fiber optic cable;
,~
41 Provide even illumination of the desired area by light delivery using fiber optics and an optical system andlor diffuser located at the top of the pole.
5/ Locate the lamp remotely from the illuminated area and conduct or transmit the light to the area to be illuminated by means of fiber optics to allow for flexibility in system configura-tion.
6/ Allow for the use of color changes in the strcetlight, either dynamically or statically, for seasonal or holiday or occasions.
7/ Reduce the costs of ownership and maintenance by remotely locating the light source such that it can be changed as needed from ground level without the use o.f ladders, bucket trucks or other elevating devices.
Brief Description of the Drawings Figurel - A two dimensional drawing of the external view of a streetlight [numbers in brackets refer to the numbered items in the drawing] with:
(1) A base to secure the assembly to a pedestal or other solid mounting surface;
(2) A secured access cover to permit access to the lamp-house for lamp changes;
(3) A light standard (pole) with internal fiber optic cable;
(4) A photo detector to control automatic operation of the streetlight;
(5) An extension arm to hold the light delivery assembly;
(6) A light delivery assembly;
(7) A cover and/or diffuser for the delivery end of the fiber optic cable;
(8) The area illuminated by the fiber optically delivered light.
Fib ire drawing of the lamp house with light source and fiber optic cable affixed for light transmission to the remote light delivery assembly [numbers in brackets refer to the numbered items in the drawing]
with:
Fib ire drawing of the lamp house with light source and fiber optic cable affixed for light transmission to the remote light delivery assembly [numbers in brackets refer to the numbered items in the drawing]
with:
(9) Cooling fan;
( 10) Lamp-house body (11) Electronics ( 12) Lamp connector (13) Lamp (14) Reflector (15) Infrared blocking filter ( 16) Optical system 17) Light trap and ventilation (18) Filter holder for color changes ( 19) Fiber optic cable connector (20) Retaining screws (21 ) Proximal fiber ferrule (22) Fiber optic cable (23) Distal fiber ferrule (24) Distal optical system (25) Deflector assembly Figure 3 - An "x-ray" drawing of the invention showing an embodiment where the lamp-house, fiber optic cable, light delivery fixture and associated components are in a single assembly which has the appearance of a conventional streetlight assembly [numbers in brackets refer to the numbered items in the drawing] with:
(1) Base (2) Lamp-house access (3) Light standard [pole (4) Photo detector (5) Extension arm (6) Light delivery assembly (7) Diffuser/cover (8) Illuminated area (9) Cooling fan (10)Lamp-house body ( Electronics ) ( Lamp connector 12) ( Lamp ) ( Reflector 14) (15)Infrared blocking filter ( Optical system 16) ( Light trap and ventilation 17) (18)Filter holder to permit colour changes (19)Fiber optic cable connector (20) Retaining screws (21) Proximal fiber ferrule (22) Fiber optic cable (23) Distal fiber ferrule (24) Distal optical system (25) Deflector assembly Detailed Description of the Invention In order to more clearly understand the present invention part numbers are assigned as follows:
Part Number I)escraptl~n 1) Base 2) Lamp-house access 3) Light standard [pole]
4) Photo detector 5) Extension arm 6) Light delivery assembly 7) Diffusericover 8) Illuminated area 9) Cooling fan 10) Lamp-house body 11) Electronics 12) Lamp connector 13 ) Lamp 14) Reflector 15) Infrared blocking filter 1 G) Optical system 17) Light trap & ventilation 18) Filter holder 19) Fiber optic cable connector 20) Retaining screws 21 ) Proximal fiber ferrule 22) Fiber optic cable 23) Distal fiber ferrule 24) Distal optical system 25) Deflector assembly.
The lighting system compromises an improved light source for illuminating optical fibers in the visible light spectrum including, a high intensity gas discharge [or other] lamp posi boned within a reflector assembly that focuses visible radiation from the lamp into the fiber op-tic medium at a focal point that selectively transmits visible light and attenuates the ultra-violet and infra-red radiation.
The alignment procedures and the geometry of the reflector design ensure maximum in-tensity supplied to the fiber optics positioned at the focal point of the assembly.
The bulbs are formed in a glass blank that supports the electrode and the lead in conduc-tons that are housed for the electrodes in a fixed relationship. The bulb and the blank with the lead-in connectors pass through the envelope to form the connector pins. Lamps are currently available with this type of configuration.
Lamps typically include a reflector substantially axially and symmetrically disposed about the lamp. The lamp may be symmetrically orientated about the horizontal and vertical axis for the purpose of concentrating the illumination intensity of the lamp.
The reflector includes an alignment section arid a mounting section .The reflector is de-signed to focus the light from a filament or a gas discharge arc, which is maintained between electrodes by use of conventional external circuitry, into the desired area.
Light is focused in a relatively small focal area such that the ends of the optical fibers are located within the focus. Reflector design is of ellipsoidal shape of revolution about the ori-gin axis which lay the foci of the Lamp. The ellipsoidal reflector nay optimized for different bulb types and shapes.
At certain times mercury vapour lights provide an optimum spectrum of light for street lighting applications. They optimize in th.e blue wavelengths and are effective in daylight simu-lation. Sodium lamps are also used and produce a reddish Light to optimize seen features on a pathway or enclosed area. Typically high-pressure lights have the highest efficiency providing one hundred to one hundred plus .lumens per watt. :Metal-halide or mercury vapour lamps pro-vide the best lighting alternative of natural light at a cost efficiency.
In the present invention, the means for transmitting light is fiber optic cable. This is shown in Figure 3. Fiber optic cable means that optical fibers are gathered together in one bun-dle or conductor. There may be, for example, several hundred fibers in such a cable or in glass cable incozporating several thousand fibers. The fiber optic cable bundle is terminated at the light delivery end of the fiber by grouping the fibers together into a metal fixture then cleaning or polishing the end fittings [ferrules.
Each fiber must be located and optimized for efficient light transmission to the distal end of the fiber optic cable. The method of achievW g this is by means of a lens or other optical structure to focus the available light into the proximal end of the fiber optic cable. A holder or fitting secures the optical fibers in their ferrule at the proximal end.
The light transmitted through the fiber optic cable is focused or diffused as needed by an optical system which may contain lenses, reflectors or diffusers such that the light is projected into the area where illumination is desired. A holder or fitting secures the optical fibers in their ferrule at the distal end.
It will be understood that modifications can be made in the embodiments of the invention de-scribed herein.
~3~
C,~bj~C~~ Of ~Y9E: I~I~J~P't~.i~!'1 It is an object of the invention that it provides a light source. with optimal characteristics for JtI~:'.e~ light117g;
It is a further object of the invention that it provides a means for focusing light from said light sovzrce into a fibre optic traz;amission medium;
It is a fuz-ther object of the invention that it incorporates a fibre optic cable for transmitting the light tom said light sc:zrce :o a distribution means:
It is a fuz-ther ob,~ect of the invention that it provides for a fza.tttre containing a lens andlor dif fuser to distribute the light over a specified area.
In accordance with the present in'~ention, a lighting system is deseribe-d comprising a projection light to simulate daylight conditions.Pro~~idina daylight simulation by ways of focus-ing the light into a fibre optic $raIlSI?llSSlon Illedl!ltn Of dual or single mode transmission.
~..~'~
( 10) Lamp-house body (11) Electronics ( 12) Lamp connector (13) Lamp (14) Reflector (15) Infrared blocking filter ( 16) Optical system 17) Light trap and ventilation (18) Filter holder for color changes ( 19) Fiber optic cable connector (20) Retaining screws (21 ) Proximal fiber ferrule (22) Fiber optic cable (23) Distal fiber ferrule (24) Distal optical system (25) Deflector assembly Figure 3 - An "x-ray" drawing of the invention showing an embodiment where the lamp-house, fiber optic cable, light delivery fixture and associated components are in a single assembly which has the appearance of a conventional streetlight assembly [numbers in brackets refer to the numbered items in the drawing] with:
(1) Base (2) Lamp-house access (3) Light standard [pole (4) Photo detector (5) Extension arm (6) Light delivery assembly (7) Diffuser/cover (8) Illuminated area (9) Cooling fan (10)Lamp-house body ( Electronics ) ( Lamp connector 12) ( Lamp ) ( Reflector 14) (15)Infrared blocking filter ( Optical system 16) ( Light trap and ventilation 17) (18)Filter holder to permit colour changes (19)Fiber optic cable connector (20) Retaining screws (21) Proximal fiber ferrule (22) Fiber optic cable (23) Distal fiber ferrule (24) Distal optical system (25) Deflector assembly Detailed Description of the Invention In order to more clearly understand the present invention part numbers are assigned as follows:
Part Number I)escraptl~n 1) Base 2) Lamp-house access 3) Light standard [pole]
4) Photo detector 5) Extension arm 6) Light delivery assembly 7) Diffusericover 8) Illuminated area 9) Cooling fan 10) Lamp-house body 11) Electronics 12) Lamp connector 13 ) Lamp 14) Reflector 15) Infrared blocking filter 1 G) Optical system 17) Light trap & ventilation 18) Filter holder 19) Fiber optic cable connector 20) Retaining screws 21 ) Proximal fiber ferrule 22) Fiber optic cable 23) Distal fiber ferrule 24) Distal optical system 25) Deflector assembly.
The lighting system compromises an improved light source for illuminating optical fibers in the visible light spectrum including, a high intensity gas discharge [or other] lamp posi boned within a reflector assembly that focuses visible radiation from the lamp into the fiber op-tic medium at a focal point that selectively transmits visible light and attenuates the ultra-violet and infra-red radiation.
The alignment procedures and the geometry of the reflector design ensure maximum in-tensity supplied to the fiber optics positioned at the focal point of the assembly.
The bulbs are formed in a glass blank that supports the electrode and the lead in conduc-tons that are housed for the electrodes in a fixed relationship. The bulb and the blank with the lead-in connectors pass through the envelope to form the connector pins. Lamps are currently available with this type of configuration.
Lamps typically include a reflector substantially axially and symmetrically disposed about the lamp. The lamp may be symmetrically orientated about the horizontal and vertical axis for the purpose of concentrating the illumination intensity of the lamp.
The reflector includes an alignment section arid a mounting section .The reflector is de-signed to focus the light from a filament or a gas discharge arc, which is maintained between electrodes by use of conventional external circuitry, into the desired area.
Light is focused in a relatively small focal area such that the ends of the optical fibers are located within the focus. Reflector design is of ellipsoidal shape of revolution about the ori-gin axis which lay the foci of the Lamp. The ellipsoidal reflector nay optimized for different bulb types and shapes.
At certain times mercury vapour lights provide an optimum spectrum of light for street lighting applications. They optimize in th.e blue wavelengths and are effective in daylight simu-lation. Sodium lamps are also used and produce a reddish Light to optimize seen features on a pathway or enclosed area. Typically high-pressure lights have the highest efficiency providing one hundred to one hundred plus .lumens per watt. :Metal-halide or mercury vapour lamps pro-vide the best lighting alternative of natural light at a cost efficiency.
In the present invention, the means for transmitting light is fiber optic cable. This is shown in Figure 3. Fiber optic cable means that optical fibers are gathered together in one bun-dle or conductor. There may be, for example, several hundred fibers in such a cable or in glass cable incozporating several thousand fibers. The fiber optic cable bundle is terminated at the light delivery end of the fiber by grouping the fibers together into a metal fixture then cleaning or polishing the end fittings [ferrules.
Each fiber must be located and optimized for efficient light transmission to the distal end of the fiber optic cable. The method of achievW g this is by means of a lens or other optical structure to focus the available light into the proximal end of the fiber optic cable. A holder or fitting secures the optical fibers in their ferrule at the proximal end.
The light transmitted through the fiber optic cable is focused or diffused as needed by an optical system which may contain lenses, reflectors or diffusers such that the light is projected into the area where illumination is desired. A holder or fitting secures the optical fibers in their ferrule at the distal end.
It will be understood that modifications can be made in the embodiments of the invention de-scribed herein.
~3~
C,~bj~C~~ Of ~Y9E: I~I~J~P't~.i~!'1 It is an object of the invention that it provides a light source. with optimal characteristics for JtI~:'.e~ light117g;
It is a further object of the invention that it provides a means for focusing light from said light sovzrce into a fibre optic traz;amission medium;
It is a fuz-ther object of the invention that it incorporates a fibre optic cable for transmitting the light tom said light sc:zrce :o a distribution means:
It is a fuz-ther ob,~ect of the invention that it provides for a fza.tttre containing a lens andlor dif fuser to distribute the light over a specified area.
In accordance with the present in'~ention, a lighting system is deseribe-d comprising a projection light to simulate daylight conditions.Pro~~idina daylight simulation by ways of focus-ing the light into a fibre optic $raIlSI?llSSlon Illedl!ltn Of dual or single mode transmission.
~..~'~
Claims (9)
1) The invention shown in figure 1 is a streetlight that uses a remote lamp-house and high intensity light source, along with appropriate optics, to focus the light into a fiber optic medium whereby the light is transmitted to a remote radiating assembly where it can be directed with op-tics, a reflector or a diffuser so as to distribute the light over an area for safety or decorative illu-mination.
2) It is a claim to the invention to provide an unproved lighting system for residential or commercial applications in street or outdoor area lighting by providing improved quality of light and reduced costs of maintaining the fixtures.
3) It is a further claim of the invention to provide a lighting system using fiber optics to al-low flexibility in the location of the light source for the lighting system.
4) It is a further claim to the invention to provide a lighting system that is capable of locating the light source and related electrical supply or electronics outside of, or away from, the area to be illuminated.
5) It is a further claim to the invention that is provides a lighting system with consistent light levels.
6) It is a further claim to the invention to provide a lighting system without the need for ex-tensive maintenance at the top of the light standard, which reduces maintenance factors.
7) It is a further claim to the invention to provide a lighting system friar can produce colour changes, either statically or dynamically, to suit the season or the needs of the owner.
8) It is a further claim of the invention to provide flexibility in lighting configurations by al-lowing for a single light source to he delivered through a fiber optics cable where the distal end of the cable can be split into two or more cables to provide light through remote multiple light delivery fixtures.
9) It is a further claim of the invention that it can provide heat and electricity free illimina-tion of areas where flammable or explosive materials are located. thus providing a greater mea-sure of safety than conventional lighting systems
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002425474A CA2425474A1 (en) | 2003-04-24 | 2003-04-24 | Fibre optic street lighting fixtures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002425474A CA2425474A1 (en) | 2003-04-24 | 2003-04-24 | Fibre optic street lighting fixtures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2425474A1 true CA2425474A1 (en) | 2003-07-13 |
Family
ID=27587749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002425474A Abandoned CA2425474A1 (en) | 2003-04-24 | 2003-04-24 | Fibre optic street lighting fixtures |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2425474A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033851A (en) * | 2013-03-07 | 2014-09-10 | 芊菉有限公司 | Remote plasma light pole system and its maintenance method |
| US20140254168A1 (en) * | 2013-03-07 | 2014-09-11 | Green De Corp. Limited | Remote plasma lamp pole system and method for installing the same |
| CN107178743A (en) * | 2017-06-30 | 2017-09-19 | 中山市风华稀柠照明设计有限公司 | A kind of street lamp of convenient maintenance |
| DE102018221999B3 (en) * | 2018-12-18 | 2020-02-13 | Audi Ag | Method for operating a lighting system with light from a motor vehicle, use of a lighting device and motor vehicle |
| WO2020144343A1 (en) * | 2019-01-10 | 2020-07-16 | Sls Super Light Solutions Ug (Haftungsbeschränkt) | Lighting device |
| US10876712B2 (en) | 2017-09-07 | 2020-12-29 | Signify Holding B.V. | Comfort of outdoor luminaires due to phyllotactic arrangement of LED sources |
-
2003
- 2003-04-24 CA CA002425474A patent/CA2425474A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033851A (en) * | 2013-03-07 | 2014-09-10 | 芊菉有限公司 | Remote plasma light pole system and its maintenance method |
| US20140254168A1 (en) * | 2013-03-07 | 2014-09-11 | Green De Corp. Limited | Remote plasma lamp pole system and method for installing the same |
| CN107178743A (en) * | 2017-06-30 | 2017-09-19 | 中山市风华稀柠照明设计有限公司 | A kind of street lamp of convenient maintenance |
| US10876712B2 (en) | 2017-09-07 | 2020-12-29 | Signify Holding B.V. | Comfort of outdoor luminaires due to phyllotactic arrangement of LED sources |
| DE102018221999B3 (en) * | 2018-12-18 | 2020-02-13 | Audi Ag | Method for operating a lighting system with light from a motor vehicle, use of a lighting device and motor vehicle |
| WO2020144343A1 (en) * | 2019-01-10 | 2020-07-16 | Sls Super Light Solutions Ug (Haftungsbeschränkt) | Lighting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |