CN111120884A - Quantum dot fluorescent optical fiber lamp - Google Patents

Quantum dot fluorescent optical fiber lamp Download PDF

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Publication number
CN111120884A
CN111120884A CN201911405694.6A CN201911405694A CN111120884A CN 111120884 A CN111120884 A CN 111120884A CN 201911405694 A CN201911405694 A CN 201911405694A CN 111120884 A CN111120884 A CN 111120884A
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CN
China
Prior art keywords
fiber
quantum dot
optical fiber
lamp
lamp body
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.)
Pending
Application number
CN201911405694.6A
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Chinese (zh)
Inventor
张航
陆建东
葛燕妮
马慧玲
朱瓒
陈利春
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.)
Zhejiang Guangta Energy Saving Technology Co ltd
Original Assignee
Zhejiang Guangta Energy Saving Technology Co ltd
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Filing date
Publication date
Application filed by Zhejiang Guangta Energy Saving Technology Co ltd filed Critical Zhejiang Guangta Energy Saving Technology Co ltd
Priority to CN201911405694.6A priority Critical patent/CN111120884A/en
Publication of CN111120884A publication Critical patent/CN111120884A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/69Details of refractors forming part of the light source
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/10Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type
    • F21V2200/17Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type characterised by the admission of light into the guide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/30Semiconductor lasers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

A quantum dot fluorescent optical fiber lamp belongs to the technical field of optical fiber illumination. The optical fiber lamp comprises a laser light source, a transmission optical fiber, a quantum dot optical fiber and an optical fiber lamp body; the optical fiber lamp body is internally provided with a bare fiber connected with one end of the quantum dot optical fiber, and the other end of the quantum dot optical fiber is connected with a transmission optical fiber; the laser light source reaches the quantum dot optical fiber through the transmission optical fiber, and the quantum dot in the optical fiber core is stimulated to emit fluorescence and is transmitted into the bare fiber in the optical fiber lamp body. The LED lamp replaces an LED light source for illumination, and is safe and reliable, the light source is easy to replace, and the illumination is uniform and stable.

Description

Quantum dot fluorescent optical fiber lamp
Technical Field
The invention relates to the technical field of optical fiber illumination, in particular to a quantum dot fluorescent optical fiber lamp.
Background
The optical fiber lamp is a new lighting technology, optical fiber (or a light guide pipe) is adopted to directly transmit light energy to the optical fiber lamp, and the optical element and the optical loop cannot leak electricity, generate heat or be short-circuited, so that potential safety hazards such as personal electric shock and fire can be effectively avoided.
Quantum dots are quasi-zero-dimensional semiconductor nanostructures that confine excitons in three spatial directions, and their unique optical and electronic properties have become a research hotspot. With the continuous improvement of quantum dot preparation technology, quantum dot technology is applied to the fields of illumination and display and other fields. In recent years, artificial nanomaterials are rapidly developed, nanocrystal quantum dots have become a focus of attention of researchers due to unique optical characteristics, and among the nanocrystal quantum dots, the CdSe quantum dots in II-VI groups draw attention due to the characteristics of simple synthesis method, controllable light-emitting wavelength, strong fluorescence, stability, reliability and the like.
For example, utility model patent CN201720607695.9 discloses a lamp and lighting system using quantum dot technology, and specifically discloses a system including a lamp body and a quantum dot LED lamp; the quantum dot LED lamp is arranged on the lamp body; the quantum dot LED lamp comprises an LED chip and a quantum dot adhesive layer; the LED chip is sequentially covered with a fluorescent powder adhesive layer, a transparent adhesive layer and the quantum dot adhesive layer; the quantum dot particles comprise quantum dots, mesoporous materials and water and oxygen blocking materials, the quantum dots are distributed in the mesoporous materials, and gaps between the quantum dots and the mesoporous materials are filled with the water and oxygen blocking materials. Although the system can generate a plurality of fluorescent lights by stimulating the quantum dot glue layer and generate white light after mixing to realize the lighting function, the light is not uniformly distributed in the lamp.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a quantum dot fluorescent optical fiber lamp which replaces an LED light source for illumination, is safe and reliable and can illuminate uniformly.
The invention is realized by the following technical scheme:
the invention provides a quantum dot fluorescent optical fiber lamp, which comprises a laser light source, a transmission optical fiber, a quantum dot optical fiber and an optical fiber lamp body, wherein the transmission optical fiber is arranged on the transmission optical fiber; the optical fiber lamp body is internally provided with a bare fiber connected with one end of the quantum dot optical fiber, and the other end of the quantum dot optical fiber is connected with a transmission optical fiber; the laser light source reaches the quantum dot optical fiber through the transmission optical fiber, and the quantum dot in the optical fiber core is stimulated to emit fluorescence and is transmitted into the bare fiber in the optical fiber lamp body.
According to the optical fiber lamp, the quantum dots are used for replacing the fluorescent sheet, so that the problems of color coordinate drift, poor light emitting uniformity, short service life and the like of the fluorescent sheet are solved. Meanwhile, the light is uniformly illuminated by adopting the bare fiber with variable curvature and the bending loss of the optical fiber.
Preferably, the bare fiber is a bent bare fiber with gradually reduced light intensity and gradually increased curvature from the incident end to the tail end.
Preferably, the bare fiber is an optical fiber having the same size and the same refractive index as the transmission fiber and the quantum dot fiber.
Preferably, two ends of the quantum dot optical fiber are respectively welded with the transmission optical fiber and the bare fiber or connected through a connector.
Preferably, the quantum dot optical fiber has a core using semiconductor nanocrystals cadmium sulfide and/or cadmium selenide quantum dots as dopants.
Preferably, the bare fiber is fixed by two pieces of flat glass and is placed inside the lamp body; or, the panel of the lamp body is engraved with a groove, and the bare fiber is embedded in the groove and solidified in the groove.
Preferably, the laser light source is one of a solid laser, a gas laser, a semiconductor laser, and a fiber laser.
Preferably, the transmission fiber is a glass fiber or a plastic fiber.
Preferably, the inner surface of the optical fiber lamp body is a frosted surface.
Preferably, the optical fiber lamp body is of a bowl-shaped structure, and the top edge of the bowl-shaped structure is embedded with the panel; or the optical fiber lamp body is of a plane structure, and the edge of the plane structure is embedded with the panel.
The invention has the following beneficial effects:
the invention relates to a quantum dot fluorescent optical fiber lamp,
(1) the quantum dots have wide and continuous distribution of excitation spectrum, narrow emission spectrum, adjustable color, high photochemical stability and difficult photolysis.
(2) The quantum dots with different sizes can generate various colored lights under the same excitation light, so that the white light laser output is realized.
(3) The LED light source is replaced by the optical fiber light guide, the laser light source and the lighting system are of a separated structure, and the light source is easy to replace and maintain.
(4) The optical fiber lamp simplifies a common lighting system, improves the safety level and the economic benefit, and has a great application prospect in important safe production places such as factories, warehouses and the like.
Drawings
FIG. 1 is a schematic structural diagram of a quantum dot fluorescent fiber lamp according to the present invention;
FIG. 2 is a structural view of embodiment 1;
fig. 3 is a side view of the internal structure of embodiment 2.
Detailed Description
Referring to fig. 1, the quantum dot fluorescent fiber lamp of the present invention includes a laser light source 10, a transmission fiber 11, a quantum dot fiber 12, and a fiber lamp body. The optical fiber lamp body is internally provided with a bare fiber 13 connected with one end of a quantum dot optical fiber 12, and the other end of the quantum dot optical fiber 12 is connected with a transmission optical fiber 11. The laser light source 10 reaches the quantum dot optical fiber 12 through the transmission optical fiber 11, and the quantum dots in the fiber core are stimulated to emit fluorescence and are transmitted into the bare fiber 13 in the fiber lamp body. The bare fiber 13 is an optical fiber having the same size and the same refractive index as the transmission optical fiber and the quantum dot optical fiber.
The quantum dot optical fiber has a fiber core using semiconductor nanocrystal cadmium sulfide and/or cadmium selenide quantum dots as dopants. The quantum dots with different diameters are doped in the quantum dot optical fiber section and are arranged according to a certain density, so that the laser light source and various fluorescent lights generated by the stimulated emission of the quantum dots with different particle diameters are mixed to emit white light, and the lighting function is realized. In the artificial nanocrystal material, the radiation and absorption spectra of the equivalent quantum dots of PbSe, CdSe, CdTe and CdS almost cover a broad band from 465-2340 nm. The width of the quantum well is regulated and controlled by manually regulating and controlling the size of the nano crystal, so that the wavelength positions of an absorption peak and a radiation peak and the full width at half maximum of a spectrum are regulated and controlled. The quantum dots with different sizes are doped into the optical fiber, and the quantum dots with different sizes are excited by the semiconductor blue laser to generate various colored lights, so that the white light laser output is realized.
And two ends of the quantum dot optical fiber are respectively welded with the transmission optical fiber and the bare fiber or connected through a connector. That is, the quantum dot fiber and the transmission fiber can be fused or connected through a connector; the quantum dot optical fiber and the bare fiber can be welded or connected through a connector.
The laser light source is one of a solid laser, a gas laser, a semiconductor laser and a fiber laser. Preferably, the laser light source is a blue laser.
The transmission optical fiber is a glass optical fiber or a plastic optical fiber.
The optical fiber lamp body is provided with a lampshade 6 and a panel 5, and the lampshade is a fully transparent lampshade. The bare fiber is fixed by two pieces of plate glass and is placed in the lamp body; or, the panel of the lamp body is engraved with a groove, and the bare fiber is embedded in the groove and solidified in the groove. From the incident end to the tail end of the bare fiber 13, the light intensity is gradually reduced, the curvature is gradually increased, and the light leakage is more and more serious. That is, the tip of the bare fiber 13 has a small degree of curvature, a large radius of curvature, little light leakage, little loss, but a large light intensity of leakage; the light leakage increases and the loss increases as the degree of curvature of the rear end of the bare fiber 13 increases and the radius of curvature decreases, and the light leakage is weaker than that of the front end of the bare fiber 13 in addition to the loss of the light transmission itself in the bare fiber 13. Therefore, the light in the first half part with less light leakage and the light in the second half part with less light leakage can reach a balance to make the light distribution uniform, thereby realizing uniform illumination. For example, the bare fiber is bent in the form of an archimedes spiral, flaring out equidistantly in each revolution.
Example 1
Fig. 2 shows a flat mosquito coil-shaped optical fiber lamp. The optical fiber lamp body is of a plane structure, and the edge of the plane structure is embedded with the panel. The bare fiber 13 is arranged in the optical fiber lamp body in a mosquito-repellent incense mode, and the bare fiber 13 in the lamp body penetrates through the opening 4 in the panel 5 to be connected with the transmission fiber 11 and the quantum dot fiber 12 outside the lamp body. In order to enlarge the illumination area, the inner surface of the transparent lampshade can be designed into a frosted surface.
Example 2
Fig. 3 shows a three-dimensional spiral fiber lamp. The optical fiber lamp body is of a bowl-shaped structure, and the top edge of the bowl-shaped structure is embedded with the panel. The bare fiber 13 is spirally coiled in the optical fiber lamp body, and the bottom view of the internal structure thereof can refer to fig. 2. In order to enlarge the illumination area, the inner surface of the transparent lampshade can be designed into a frosted surface.
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims (10)

1. A quantum dot fluorescent fiber lamp is characterized by comprising a laser light source, a transmission fiber, a quantum dot fiber and a fiber lamp body; the optical fiber lamp body is internally provided with a bare fiber connected with one end of the quantum dot optical fiber, and the other end of the quantum dot optical fiber is connected with a transmission optical fiber; the laser light source reaches the quantum dot optical fiber through the transmission optical fiber, and the quantum dot in the optical fiber core is stimulated to emit fluorescence and is transmitted into the bare fiber in the optical fiber lamp body.
2. The quantum dot fluorescent fiber lamp of claim 1, wherein the bare fiber is a bent bare fiber with gradually decreasing light intensity and gradually increasing curvature from the incident end to the tail end.
3. The quantum dot fluorescent fiber lamp of claim 1, wherein the bare fiber is a fiber with the same size and refractive index as the transmission fiber and the quantum dot fiber.
4. The quantum dot fluorescent fiber lamp of claim 1, wherein both ends of the quantum dot optical fiber are respectively welded with the transmission fiber and the bare fiber or connected through a connector.
5. A quantum dot fluorescent fiber lamp as claimed in claim 1, wherein the quantum dot fiber has a core using semiconductor nanocrystal cadmium sulfide and/or cadmium selenide quantum dots as dopants.
6. The quantum dot fluorescent fiber lamp of claim 1, wherein the bare fiber is fixed by two pieces of plate glass and placed inside the lamp body; or, the panel of the lamp body is engraved with a groove, and the bare fiber is embedded in the groove and solidified in the groove.
7. A quantum dot fluorescent fiber lamp as claimed in claim 1, wherein the laser source is one of a solid laser, a gas laser, a semiconductor laser, and a fiber laser.
8. The quantum dot fluorescent fiber lamp of claim 1, wherein the transmission fiber is a glass fiber or a plastic fiber.
9. The quantum dot fluorescent fiber lamp of claim 1, wherein the inner surface of the fiber lamp body is frosted.
10. The quantum dot fluorescent fiber lamp of claim 1, wherein the fiber lamp body is a bowl-shaped structure, and the top edge of the bowl-shaped structure is embedded with the panel; or the optical fiber lamp body is of a plane structure, and the edge of the plane structure is embedded with the panel.
CN201911405694.6A 2019-12-31 2019-12-31 Quantum dot fluorescent optical fiber lamp Pending CN111120884A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1474223A (en) * 2003-08-08 2004-02-11 中国科学院上海光学精密机械研究所 Multiple wave length hedgehog quantum dot double coated optical fibre amplifiying device
CN1664633A (en) * 2005-03-04 2005-09-07 浙江工业大学 Nanocrystalline quantum dot optical fiber and optical fiber amplifier
CN101393299A (en) * 2008-11-06 2009-03-25 中国计量学院 Ultra-continuous wideband white light source of quanta point optical fiber
CN103486502A (en) * 2013-09-27 2014-01-01 深圳极光世纪科技有限公司 Optical fiber network board laser light source
CN106939991A (en) * 2017-02-26 2017-07-11 中国科学院上海光学精密机械研究所 A kind of headlight for vehicles based on LASER Excited Fluorescence optical fiber
CN108800051A (en) * 2018-06-04 2018-11-13 常州星宇车灯股份有限公司 A kind of automobile tail light using red laser light source and glass optical fiber
CN211502362U (en) * 2019-12-31 2020-09-15 浙江光塔节能科技有限公司 Quantum dot fluorescent optical fiber lamp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1474223A (en) * 2003-08-08 2004-02-11 中国科学院上海光学精密机械研究所 Multiple wave length hedgehog quantum dot double coated optical fibre amplifiying device
CN1664633A (en) * 2005-03-04 2005-09-07 浙江工业大学 Nanocrystalline quantum dot optical fiber and optical fiber amplifier
CN101393299A (en) * 2008-11-06 2009-03-25 中国计量学院 Ultra-continuous wideband white light source of quanta point optical fiber
CN103486502A (en) * 2013-09-27 2014-01-01 深圳极光世纪科技有限公司 Optical fiber network board laser light source
CN106939991A (en) * 2017-02-26 2017-07-11 中国科学院上海光学精密机械研究所 A kind of headlight for vehicles based on LASER Excited Fluorescence optical fiber
CN108800051A (en) * 2018-06-04 2018-11-13 常州星宇车灯股份有限公司 A kind of automobile tail light using red laser light source and glass optical fiber
CN211502362U (en) * 2019-12-31 2020-09-15 浙江光塔节能科技有限公司 Quantum dot fluorescent optical fiber lamp

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