CN115046146B - Lighting fixture - Google Patents

Lighting fixture Download PDF

Info

Publication number
CN115046146B
CN115046146B CN202210587393.5A CN202210587393A CN115046146B CN 115046146 B CN115046146 B CN 115046146B CN 202210587393 A CN202210587393 A CN 202210587393A CN 115046146 B CN115046146 B CN 115046146B
Authority
CN
China
Prior art keywords
lighting fixture
spectrum
light
microalgae cultivation
chip
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.)
Active
Application number
CN202210587393.5A
Other languages
Chinese (zh)
Other versions
CN115046146A (en
Inventor
包书林
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.)
Xiamen Sanan Optoelectronics Technology Co Ltd
Original Assignee
Xiamen Sanan Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xiamen Sanan Optoelectronics Technology Co Ltd filed Critical Xiamen Sanan Optoelectronics Technology Co Ltd
Priority to CN202210587393.5A priority Critical patent/CN115046146B/en
Publication of CN115046146A publication Critical patent/CN115046146A/en
Application granted granted Critical
Publication of CN115046146B publication Critical patent/CN115046146B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-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
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements
    • H01L33/60—Reflective elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008—Processes
    • H01L2933/0033—Processes relating to semiconductor body packages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008—Processes
    • H01L2933/0033—Processes relating to semiconductor body packages
    • H01L2933/0041—Processes relating to semiconductor body packages relating to wavelength conversion elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008—Processes
    • H01L2933/0033—Processes relating to semiconductor body packages
    • H01L2933/0058—Processes relating to semiconductor body packages relating to optical field-shaping elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0008—Processes
    • H01L2933/0033—Processes relating to semiconductor body packages
    • H01L2933/0066—Processes relating to semiconductor body packages relating to arrangements for conducting electric current to or from the semiconductor body

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (AREA)
  • Cultivation Of Plants (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)

Abstract

The present invention provides a lighting fixture comprising: a lighting fixture assembly and at least one LED light bead mounted on the lighting fixture assembly, the lighting fixture having at least the following light emitting characteristics: the spectrum peak wavelength is 400-500 nm, and the spectrum half-wave width is less than 50nm; the spectrum has a second peak between 500nm and 660nm, and the absolute difference between the peak and the valley of the relative spectrum is less than 0.25; in the spectrum of the lighting fixture, the radiation energy ratio of red light to blue light and the radiation energy ratio of red light to green light are between 0.5 and 1. The spectrum curve of the lighting fixture is matched with the absorption spectrum curve of the microalgae, so that the light energy utilization efficiency is high, and the absorption of different microalgae can be satisfied.

Description

Lighting fixture
Technical Field
The invention belongs to the technical field of lighting devices, and particularly relates to a lighting device for microalgae cultivation and a manufacturing method of the lighting device.
Background
Microalgae are ancient lower single-cell plants and are widely distributed in water areas such as oceans, freshwater lakes and the like. Microalgae cells are small, various in morphology, strong in adaptation and wide in distribution. The algae with various species plays an important role in the water area ecology system, is an important natural bait for culturing shellfish, shrimp and sea cucumber, is the basis of fish food chains, is generally directly or indirectly derived from planktonic algae, has the characteristics of rapid propagation and high yield due to the fact that single-cell algae contain abundant nutrients, and has wide application in aspects of medical industry, food industry, animal feeding, environmental monitoring, purification and the like due to polysaccharide, protein, pigment and the like produced by cell metabolism.
The microalgae plants are the same as the higher plants, can utilize carbon dioxide and water to synthesize organic substances under the illumination condition, grow rapidly and efficiently, and are autotrophic original plant plants which can independently live. The illumination effect is a decisive factor for determining the vertical distribution of microalgae, because the absorption capacity of water body to light is very strong, and because seawater is easy to absorb long-wavelength light, the spectrum difference of each water layer is caused, and the requirements of various microalgae living on different layer depths on light intensity and spectrum are also different. Green algae generally live in water meter layers to absorb red light with equal wavelength, while red algae and brown algae can absorb green, yellow, orange light and other short wave light to live in deep water. At present, microalgae which can be cultivated and produced in large quantities mainly comprise cyanobacteria, chlorophyta, jinzhimen and Rhodophyta.
The selective absorption of light waves by photosynthetic pigments is the adaptation of plants to ecological environment formed in long-term evolution, and the suitable spectrum proportion of different plants is different. The spectrum of the traditional lighting fixture contains more infrared and ultraviolet components which are not suitable for plant absorption and can generate more heat, and the LEDs can emit monochromatic light required by plant photosynthesis, so that the LED lighting fixture is a basis for forming plant biomass and yield, but the current lighting fixture for plant lighting mainly uses red and blue monochromatic light, has poor spectrum continuity and lacks green, yellow and orange light required by microalgae cultivation production.
At present, a 6500K fluorescent lamp is mainly adopted for microalgae cultivation, a plant growing lamp is partially adopted, a lamp with a multi-color chip combination and light modulation selectable is also adopted, different spectrums are realized by controlling the brightness combination of different chips, however, the fluorescent lamp contains more ultraviolet components, and the spectrum utilization rate is low; the plant growth lamp mainly comprises red and blue spectrums, has single spectrum component and is not suitable for algae growth and propagation; the light-adjustable lamp is high in cost and low in light efficiency, is only suitable for experimental application, and is not suitable for large-scale cultivation.
Therefore, how to design and manufacture an LED lighting device with higher spectral absorption efficiency for providing green, yellow and orange light needed by microalgae cultivation to meet the requirements of various microalgae cultivation related to light environment is a problem to be solved.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a lighting fixture for microalgae cultivation and a manufacturing method thereof, which are used for solving the problem that the existing lighting device cannot provide a suitable environment for microalgae cultivation. To achieve the above and other related objects, the present invention provides a lighting fixture for microalgae cultivation, comprising: a lighting fixture assembly and at least one LED light bead mounted on the lighting fixture assembly, the lighting fixture having at least the following light emission characteristics:
a) The spectrum part or the whole spectrum with the wavelength of 500nm-660nm is formed by excitation and conversion of fluorescent materials;
b) The spectrum peak wavelength is 400-500 nm, and the spectrum half-wave width is less than 50nm;
c) The spectrum has a second peak between 500nm and 660nm, and the absolute difference between the peak and the valley of the relative spectrum is less than 0.25;
d) In the spectrum of the lighting fixture, the radiation energy ratio of red light to blue light and the radiation energy ratio of red light to green light are between 0.5 and 1.
Further, the wavelength range of the red light is 600nm-660nm; the wavelength range of the blue light is 400-500 nm, and the wavelength range of the green light is 500-600 nm.
Further, the fluorescent material is an up-conversion material.
Still further, the upconverting material comprises one or more of an aluminate, a silicate, a nitride, and an oxynitride.
Still further, the aluminate includes one or more of YAG derivatives, luAG derivatives.
Further, the lighting fixture comprises at least one LED lamp bead, and each LED lamp bead has the light-emitting characteristics in a), b), c), and d) above.
Further, the LED lamp bead comprises a chip support, a lead and a blue chip with the peak wavelength of 400-500 nm, wherein a reflecting cup is arranged on the chip support, the blue chip is arranged on the cup bottom of the reflecting cup, the lead is connected with the blue chip and pins at two ends, and the fluorescent material is arranged in the reflecting cup.
Further, the blue chip is a chip of 450nm or less of 0.5W.
Still further, the fluorescent material is prepared by the following method:
mixing and stirring aluminate 540nm series green fluorescent powder and nitride 640nm red fluorescent powder according to the mass parts of the fluorescent powder as the reference, and fully forming a fluorescent powder mixture according to the ratio of 7.5-8.5:1.5-2.5; and taking the mass parts of the fluorescent powder mixture as the reference, mixing and stirring the fluorescent powder mixture and silica gel according to the ratio of 1.5-2.5:7.5-8.5 to fully form a fluorescent powder silica gel mixture, and dripping the fluorescent powder silica gel mixture into the reflecting cup.
Further, the lighting fixture comprises a lighting structure component and a plurality of LED lamp beads with different colors and different color temperatures, wherein the LED lamp beads with different colors and different color temperatures are installed on the lighting structure component, and the LED lamp beads with different colors and different color temperatures have the luminous characteristics in the steps a), b), c) and d).
Still further, the lighting structure assembly comprises a printed circuit board, a driving component and a heat dissipation structural component, wherein the lamp beads of the LED lamp beads with different colors and different color temperatures are welded on the printed circuit board, and the driving component drives the printed circuit board.
Further, the driving part is a constant current conversion circuit.
Furthermore, the heat dissipation structural member is any one of die-cast aluminum, extruded and stretched aluminum, high-heat-conductivity plastic and graphite.
The invention also provides a manufacturing method of the lighting fixture for microalgae cultivation, the lighting fixture comprises at least one LED lamp bead, and each LED lamp bead has the following luminous characteristics:
a) The spectrum with the wavelength of 500nm-660nm is formed by excitation and conversion of fluorescent materials;
b) The spectrum peak wavelength is 400-500 nm, and the spectrum half-wave width is less than 50nm;
c) The spectrum has a second peak between 500nm and 660nm, and the absolute difference between the peak and the valley of the relative spectrum is less than 0.25;
d) In the spectrum of the lighting fixture, the radiation energy ratio of red light to blue light and the radiation energy ratio of red light to green light are between 0.5 and 1.
The manufacturing process of the LED lamp bead at least comprises the following steps: a blue chip with a single peak wavelength of 400-500 nm is arranged at the bottom of a reflecting cup of a chip bracket, and the chip is electrically connected with pins at two ends through wires;
dripping the fluorescent powder silica gel mixture into the reflecting cup to be solidified into corresponding fluorescent particles;
and the proportion relation of each fluorescent material in the fluorescent powder silica gel mixture is adjusted, so that the lamp beads have the luminous characteristic.
Further, the preparation method of the fluorescent powder silica gel mixture comprises the following steps:
mixing and stirring aluminate 540nm series green fluorescent powder and nitride 640nm red fluorescent powder according to the mass parts of the fluorescent powder as the reference, and fully forming a fluorescent powder mixture according to the ratio of 7.5-8.5:1.5-2.5; and mixing and stirring the fluorescent powder mixture and silica gel according to the mass parts of the fluorescent powder mixture as the reference, and fully forming the fluorescent powder silica gel mixture by mixing and stirring the fluorescent powder mixture and the silica gel according to the ratio of 1.5-2.5:7.5-8.5.
Furthermore, the position of the second peak between 500nm and 660nm can be adjusted by adjusting the proportion relation between the green fluorescent powder and the red fluorescent powder.
The invention also provides a manufacturing method of the lighting fixture for microalgae cultivation, which comprises the following steps: by adjusting the combination of a plurality of different color and different color temperature light beads mounted on the lighting fixture assembly, the lighting fixture is finally provided with the following luminous characteristics:
a) The spectrum part or the whole spectrum with the wavelength of 500nm-660nm is formed by excitation and conversion of fluorescent materials;
b) The spectrum peak wavelength is 400-500 nm, and the spectrum half-wave width is less than 50nm;
c) The spectrum has a second peak between 500nm and 660nm, and the absolute difference between the peak and the valley of the relative spectrum is less than 0.25;
d) In the spectrum of the lighting fixture, the radiation energy ratio of red light to blue light and the radiation energy ratio of red light to green light are between 0.5 and 1.
Further, the position of the second peak between 500nm and 660nm can be adjusted by changing the number of the lamp beads with different colors.
Still further, the lighting structure assembly comprises a printed circuit board, a driving part and a heat dissipation structural part, wherein a plurality of LED lamp beads with different colors and different color temperatures are welded on the printed circuit board, and the driving part drives the printed circuit board.
As described above, the lighting fixture for microalgae cultivation has the following beneficial effects: the emission spectrum curve of the lighting fixture is matched with the absorption spectrum curve of chlorophyll and phycobiliprotein of microalgae, the light energy utilization efficiency is high, the absorption of different microalgae can be met, the adaptability is good, and the lighting fixture is suitable for mass production. In addition, the lighting fixture has a simple structure and can meet the requirements of various lamp body forms such as high-well lamps or line lamps.
Drawings
FIG. 1 shows a relative spectral curve of a lighting fixture of the present invention;
FIG. 2 shows a relative spectral curve of a lighting fixture of the present invention having an adjustable second peak;
FIG. 3 is a schematic view of an LED lamp bead according to a first embodiment of the lighting fixture of the present invention;
FIG. 4 is a cross-sectional view of a second embodiment of a lighting fixture of the present invention;
FIG. 5 is a diagram showing a bead distribution diagram of a second embodiment of a lighting fixture of the present invention;
FIG. 6 is a graph showing a spectrum of 2700K color temperature in the fourth embodiment;
FIG. 7 is a graph showing a spectrum of 6500K color temperature in the fourth embodiment;
FIG. 8 is a graph showing the spectrum of a non-phosphor excited red LED in the fourth embodiment;
FIG. 9 is a graph showing a spectrum of a lighting fixture in the fourth embodiment;
FIG. 10 is a graph showing a spectrum of 6500K color temperature in the fifth embodiment;
FIG. 11 is a graph showing a spectrum of 1800K color temperature in the fifth embodiment;
fig. 12 shows a spectral graph of a lighting fixture in embodiment five.
Description of element reference numerals
1, a lamp bead; 2, a printed circuit board; 3, radiating structural members; 4, driving the component; 5, a chip; 6, a chip bracket; 7, a reflecting cup; 8, fluorescent particles; 9, pins; and 10, conducting wires.
Detailed Description
Microalgae are ancient lower single-cell plants and are widely distributed in water areas such as oceans, freshwater lakes and the like. Microalgae cells are small, various in morphology, strong in adaptation and wide in distribution. The algae with various species plays an important role in the water area ecology system, is an important natural bait for culturing shellfish, shrimp and sea cucumber, is the basis of fish food chains, is generally directly or indirectly derived from planktonic algae, has the characteristics of rapid propagation and high yield due to the fact that single-cell algae contain abundant nutrients, and has wide application in aspects of medical industry, food industry, animal feeding, environmental monitoring, purification and the like due to polysaccharide, protein, pigment and the like produced by cell metabolism.
The microalgae plants are the same as the higher plants, can utilize carbon dioxide and water to synthesize organic substances under the illumination condition, grow rapidly and efficiently, and are autotrophic original plant plants which can independently live. The illumination effect is a decisive factor for determining the vertical distribution of microalgae, because the water body has strong absorption capacity on light, and the seawater is easy to absorb long-wavelength light, so that the spectrum difference of each water layer is caused, and the requirements of various microalgae on light intensity and spectrum are different. Green algae generally live in water meter layers to absorb red light with equal wavelength, while red algae and brown algae can absorb green, yellow, orange light and other short wave light to live in deep water. At present, microalgae which can be cultivated and produced in large quantities mainly comprise cyanobacteria, chlorophyta, jinzhimen and Rhodophyta.
The selective absorption of light waves by photosynthetic pigments is the adaptation of plants to ecological environment formed in long-term evolution, and the suitable spectrum proportion of different plants is different. The spectrum of the traditional lighting fixture contains more infrared and ultraviolet components which are not suitable for plant absorption and can generate more heat, and the LEDs can emit monochromatic light required by plant photosynthesis, so that the LED lighting fixture is a basis for forming plant biomass and yield, but the current lighting fixture for plant lighting mainly uses red and blue monochromatic light, has poor spectrum continuity and lacks green, yellow and orange light required by microalgae cultivation production.
The lighting fixture for microalgae cultivation is designed according to the absorption characteristics of different microalgae, optimizes and provides green, yellow and orange light required by microalgae cultivation, can meet the requirements of various microalgae cultivation and light environment correlation, and has higher spectral absorption efficiency compared with the currently applied fluorescent lamp and single-spectrum LED lighting fixture, and is flexible to use and has wide application value.
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.
Please refer to fig. 1 to 5. It should be noted that, the illustrations provided in the present embodiment are merely schematic illustrations of the basic concepts of the present invention, and only the components related to the present invention are shown in the illustrations, rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
Embodiment one:
the present invention provides a lighting fixture for microalgae cultivation, comprising: a lighting fixture assembly and at least one LED light bead mounted on the lighting fixture assembly, the lighting fixture having at least the following light emission characteristics:
a) The spectrum with the wavelength of 500nm-660nm is formed by excitation and conversion of fluorescent materials;
b) The spectrum peak wavelength is 400-500 nm, and the spectrum half-wave width is less than 50nm;
c) The spectrum has a second peak between 500nm and 660nm, and the absolute difference between the peak and the valley of the relative spectrum is less than 0.25;
d) In the spectrum of the lighting fixture, the radiation energy ratio of red light to blue light and the radiation energy ratio of red light to green light are between 0.5 and 1.
The emission spectrum curve of the lighting fixture for microalgae cultivation is identical with the absorption spectrum curve of chlorophyll and phycobiliprotein of microalgae, the light energy utilization efficiency is high, the absorption of different microalgae can be satisfied, and the lighting fixture has good adaptability and is suitable for mass production.
The wavelength range of the red light in the embodiment is 600nm-660nm; the wavelength range of the blue light is 400nm-500nm, and the wavelength range of the green light is 500nm-600nm.
The lighting fixture of the present invention may realize the above-mentioned light emission characteristics a), b), c), and d) in various manners, and in this embodiment, the lighting fixture includes one LED lamp bead, and a single LED lamp bead has the above-mentioned light emission characteristics a), b), c), and d).
In this embodiment, the LED lamp bead includes a chip support 6, a wire 10 and a blue chip 5 with a peak wavelength between 400nm and 500nm, a reflective cup 7 is disposed on the chip support 6, the blue chip 5 is mounted on the bottom of the reflective cup 7, the wire 10 is connected with the blue chip 5 and pins 9 at two ends, and the fluorescent material is disposed in the reflective cup 7.
The chip 5 in the present invention may be a high-power chip 5, but considering that the blue chip 5 with a small and medium power (not more than 0.5W) of 450nm has the highest photoelectric conversion efficiency and higher cost performance, the blue chip 5 in the present embodiment is a small and medium-power chip with a small and medium power of 0.5W and below 450 nm.
The fluorescent material in the invention can be provided in various forms, such as a fluorescent layer coated on the inner wall of the reflecting cup 7, and the like, so long as the fluorescent material can partially excite the light emitted by the blue chip 5, and the excited light with the wavelength of 500-660nm after excitation and the unexcited blue light directly emitted by the blue chip 5 with 400-500 nm are compounded into a broad spectrum with the four characteristics of a), b), c) and d).
The fluorescent material in the present invention may be a conventional fluorescent material in the art, such as an up-conversion material of aluminate (YAG derivative, luAG derivative), silicate, nitride, oxynitride, etc., but the fluorescent material in the preferred embodiment is a 540nm series green fluorescent powder and a 640nm red fluorescent powder, and is prepared by the following steps:
1) Mixing and stirring aluminate 540nm series green fluorescent powder and nitride 640nm red fluorescent powder according to the mass parts of the fluorescent powder as the reference, and fully forming a fluorescent powder mixture according to the ratio of 7.5-8.5:1.5-2.5;
2) Mixing and stirring the fluorescent powder mixture and silica gel according to the mass parts of the fluorescent powder mixture as the reference, and fully forming a fluorescent powder silica gel mixture by mixing and stirring the fluorescent powder mixture and the silica gel according to the ratio of 1.5-2.5:7.5-8.5;
3) And dripping the fluorescent powder silica gel mixture into the reflecting cup 7 to be solidified into corresponding fluorescent particles 8.
The target lamp beads prepared by the method are characterized in that fluorescent powder particles are suspended in silica gel, a part of blue light emitted by a blue chip 5 is excited by fluorescent materials, a part of the blue light directly passes through the silica gel, and the excited light and the non-excited light passing through the silica gel are combined into the broad spectrum with the four characteristics of a), b), c) and d). The spectrum with the wavelength between 500nm and 660nm in the broad spectrum is formed by excitation and conversion of fluorescent materials, the peak wavelength of the pearlescent spectrum of the tested target lamp is between 440nm and 460nm, the yellow-green part of the spectrum is smoother, the absolute difference between the peak and the valley of the relative spectrum between 500nm and 660nm is smaller than 0.25, and the radiation energy ratio R/B, R/G of red light and blue light or green light is between 0.5 and 1.
Embodiment two:
as shown in fig. 4-5, the present embodiment provides an LED lighting device for microalgae cultivation, which includes a lighting structure component and a plurality of LED lamp beads 1, where each LED lamp bead 1 is an LED lamp bead described in embodiment one, and each LED lamp bead has four light-emitting characteristics of a), b), c), and d) described in embodiment one. The lighting structure assembly comprises a printed circuit board 2, a driving part 4 and a heat dissipation structural part 3, wherein a plurality of LED lamp beads 1 are welded on the printed circuit board 2 through reflow soldering, transparent silica gel is coated around a bonding pad to prevent moisture, and the driving part 4 drives the printed circuit board 2.
The heat dissipation structure 3 of the LED lighting fixture of the present invention may be any one of die-cast aluminum, extruded and stretched aluminum, high heat conductive plastic, and graphite, and is preferably die-cast aluminum with good heat dissipation.
The driving component 4 in this embodiment is a constant current conversion circuit, so as to convert a high-voltage ac or dc power supply into a suitable current of the LED lamp beads 1, and is connected to the printed circuit board 2 welded with a plurality of the LED lamp beads 1.
The light emitting units of the lighting fixture in the embodiment all adopt the LED lamp beads for microalgae cultivation, and the color temperature of the lighting fixture is 5000K-6000K.
Embodiment III:
the embodiment provides a manufacturing method of a lighting fixture for microalgae cultivation, the lighting fixture comprises at least one LED lamp bead, and each LED lamp bead has the following luminous characteristics:
a) The spectrum with the wavelength of 500nm-660nm is formed by excitation and conversion of fluorescent materials;
b) The spectrum peak wavelength is 400-500 nm, and the spectrum half-wave width is less than 50nm;
c) The spectrum has a second peak between 500nm and 660nm, and the absolute difference between the peak and the valley of the relative spectrum is less than 0.25;
d) In the spectrum of the lighting fixture, the radiation energy ratio of red light to blue light and the radiation energy ratio of red light to green light are between 0.5 and 1.
Referring to fig. 3, the manufacturing process of the LED lamp bead at least includes the following steps:
a blue chip 5 with the peak wavelength of 400-500 nm is arranged at the bottom of a reflecting cup 7 of a chip bracket 6, and the chip 5 is electrically connected with pins at two ends through a lead 10;
dripping the fluorescent powder silica gel mixture into the reflecting cup 7 to be solidified into corresponding fluorescent particles 8;
and (3) adjusting the proportion relation of each fluorescent material in the fluorescent powder silica gel mixture to enable the LED lamp bead to have the luminous characteristics in the steps a), b), c) and d).
Wherein the preparation steps of the fluorescent powder silica gel mixture comprise:
mixing and stirring aluminate 540nm series green fluorescent powder and nitride 640nm red fluorescent powder according to the mass parts of the fluorescent powder as the reference, and fully forming a fluorescent powder mixture according to the ratio of 7.5-8.5:1.5-2.5; and mixing and stirring the fluorescent powder mixture and silica gel according to the mass parts of the fluorescent powder mixture as the reference, and fully forming the fluorescent powder silica gel mixture by mixing and stirring the fluorescent powder mixture and the silica gel according to the ratio of 1.5-2.5:7.5-8.5.
The single lamp bead prepared by the method has the advantages that the peak wavelength of the spectrum is 440-460 nm, the yellow-green part of the spectrum is smooth, the absolute difference between the peak and the valley of the spectrum is less than 0.25, and the radiation energy ratio R/B, R/G of red light to blue light or green light is 0.5-1.
In this embodiment, the position of the second peak between 500nm and 660nm can be adjusted by adjusting the ratio of the green phosphor to the red phosphor.
Embodiment four:
as shown in fig. 4-5, the present embodiment provides a lighting fixture for microalgae cultivation, the lighting fixture includes a lighting structure component and a plurality of LED lamp beads with different colors and different color temperatures installed on the lighting structure component, and the plurality of LED lamp beads with different colors and different color temperatures have the following light emitting characteristics after being combined:
a) The spectrum with the wavelength of 500-660nm is partially formed by excitation and conversion of fluorescent materials;
b) The spectrum peak wavelength is 400-500 nm, and the spectrum half-wave width is less than 50nm;
c) The spectrum has a second peak between 500nm and 660nm, and the absolute difference between the peak and the valley of the relative spectrum is less than 0.25;
d) In the spectrum of the lighting fixture, the radiation energy ratio of red light to blue light is 0.5-1.
It should be noted that, the plurality of lamp beads with different colors and different color temperatures in the lighting fixture can be lamp beads with different color temperatures generated by adding fluorescent powder, which is similar to daily lighting, and can also be white lamp beads with different color temperatures of blue, red and d) singly, as long as the four characteristics of a), b), c) and d) are satisfied after the lamp beads emit light together. In this embodiment, after mixing a lamp bead with a color temperature of 2700K and a spectrum as shown in fig. 6, a lamp bead with a color temperature of 6500K and a spectrum as shown in fig. 7, and a non-fluorescent powder excited red LED (spectrum curve is shown in fig. 8) according to a ratio of 1:7:1, four characteristic spectrums as shown in fig. 9, a), b), c) and d) are obtained.
It should be further noted that the wavelength range of the red light in this embodiment is 600nm-660nm; the wavelength range of the blue light is 400nm-500nm, and the wavelength range of the green light is 500nm-600nm.
The light spectrum between 500 and 660nm in the light emitting characteristic a) of the LED lighting fixture in this embodiment is partially formed by excitation and conversion of fluorescent materials, that is, one part of the light spectrum between 500 and 660nm is formed by excitation and conversion of 2700K and 6500K light beads by fluorescent materials, and the other part of the light spectrum is red light emitted by the red LED chip itself excited by non-fluorescent powder.
Preferably, in this embodiment, the lighting structure assembly includes a printed circuit board 2, a driving component 4, and a heat dissipation structure 3, where the plurality of LED lamp beads 1 with different colors and different color temperatures are welded on the printed circuit board 2, and the driving component 4 drives the printed circuit board 2.
The heat dissipation structure 3 may be made of various materials such as die-cast aluminum, extruded and stretched aluminum, high heat conduction plastic, graphite, etc., and is preferably die-cast aluminum with good heat dissipation in this embodiment.
The driving component 4 in this embodiment is a constant current conversion circuit, so as to convert a high-voltage ac or dc power supply into a suitable current of the LED lamp bead 1, and is connected to the printed circuit board 2 welded with the LED lamp bead 1.
Fifth embodiment:
the embodiment provides a manufacturing method of a lighting fixture for microalgae cultivation, which comprises the following steps: by adjusting the combination of a plurality of different color and different color temperature light beads mounted on the lighting fixture assembly, the lighting fixture is finally provided with the following luminous characteristics:
a) The spectrum with the wavelength of 500-660nm is formed by excitation and conversion of fluorescent materials;
b) The spectrum peak wavelength is 400-500 nm, and the spectrum half-wave width is less than 50nm;
c) The spectrum has a second peak between 500nm and 660nm, and the absolute difference between the peak and the valley of the relative spectrum is less than 0.25;
d) In the spectrum of the lighting fixture, the radiation energy ratio of red light to blue light and the radiation energy ratio of red light to green light are between 0.5 and 1.
The four characteristic spectrums a), b), c) and d) can be realized by different combination forms of a plurality of different colors and different color temperature lamp beads, but in the embodiment, the four characteristic spectrums a), b), c) and d) are obtained by mixing a spectrum with a color temperature of 6500K shown in fig. 10 and a spectrum with a color temperature of 1800K shown in fig. 11 according to a ratio of 3:1, and the four characteristic spectrums a), b), c) and d) are obtained as shown in fig. 12. Wherein, the spectra of the 6500K and 1800K lamp beads of 500-660nm are all formed by excitation and conversion of fluorescent materials.
In this embodiment, the position of the second peak between 500nm and 660nm can be adjusted by changing the number of the different color beads.
In this embodiment, the lighting structure assembly includes a printed circuit board, a driving component, and a heat dissipation structure, where the LED lamp beads with different colors and different color temperatures are welded on the printed circuit board, and the driving component drives the printed circuit board.
In conclusion, the emission spectrum curve of the lighting fixture for microalgae cultivation is matched with the absorption spectrum curve of the chlorophyll and phycobilin of the microalgae, the light energy utilization efficiency is high, the absorption of different microalgae can be met, the adaptability is good, and the lighting fixture is suitable for mass production. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (12)

1. A lighting fixture for microalgae cultivation, comprising: a lighting fixture assembly and at least one LED light bead mounted on the lighting fixture assembly, the LED light bead comprising a fluorescent material, the lighting fixture having at least the following light emitting characteristics:
the wavelength range of the red light is 600nm-660nm; the wavelength range of blue light is 400-500 nm; the wavelength range of green light is 500-600 nm;
the spectrum peak wavelength is 400-500 nm, and the spectrum half-wave width is less than 50nm;
the spectrum has a second peak between 500nm and 660nm, and the absolute difference between the peak and the valley of the relative spectrum is less than 0.25;
in the spectrum of the lighting fixture, the radiation energy ratio of red light to blue light and the radiation energy ratio of red light to green light are between 0.5 and 1.
2. The lighting fixture for microalgae cultivation of claim 1, wherein part or all of the spectrum with the wavelength between 500nm and 660nm is converted by excitation of fluorescent materials.
3. A lighting fixture for microalgae cultivation as claimed in claim 2, characterized in that the fluorescent material comprises one or more of aluminate, silicate, nitride, oxynitride.
4. A lighting fixture for microalgae cultivation in accordance with claim 3, characterized in that the aluminate comprises one or more of YAG derivatives, luAG derivatives.
5. A lighting fixture for microalgae cultivation in accordance with claim 2, wherein the fluorescent material adopts 540nm series green fluorescent powder and 640nm red fluorescent powder of nitride.
6. The lighting fixture for microalgae cultivation of claim 1, wherein the color temperature of the LED lamp beads is 5000K-6000K.
7. The lighting fixture for microalgae cultivation according to claim 1, wherein the LED lamp beads comprise lamp beads with color temperatures of 2700K and 6500K, and a red LED chip.
8. The lighting device of claim 1, wherein a portion of the spectrum between 500nm and 660nm is converted from fluorescent material excitation by beads having color temperatures of 2700K and 6500K, and another portion is red light emitted by the red LED chip itself excited by non-fluorescent powder.
9. The lighting fixture for microalgae cultivation of claim 1, wherein the LED lamp beads further comprise a chip support, a wire and a blue chip with a peak wavelength of 400-500 nm, a reflection cup is arranged on the chip support, the blue chip is arranged on the cup bottom of the reflection cup, the wire is connected with the blue chip and two end pins, and the fluorescent material is arranged in the reflection cup.
10. The lighting fixture for microalgae cultivation of claim 9, wherein the blue chip is a small and medium power chip of 0.5W and below.
11. A lighting fixture for microalgae cultivation in accordance with claim 1, wherein the lighting fixture assembly comprises a printed circuit board, a driving component, and a heat dissipation structure, a plurality of the LED light beads are mounted on the printed circuit board, and the driving component drives the printed circuit board.
12. A lighting fixture for microalgae cultivation in accordance with claim 1, wherein the lighting fixture comprises a lighting fixture component and a plurality of LED light beads of different colors and different color temperatures mounted on the lighting fixture component, and the plurality of LED light beads of different colors and different color temperatures have the light emitting characteristics described in claim 1 in combination.
CN202210587393.5A 2019-03-28 2019-03-28 Lighting fixture Active CN115046146B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210587393.5A CN115046146B (en) 2019-03-28 2019-03-28 Lighting fixture

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/CN2019/080185 WO2020191738A1 (en) 2019-03-28 2019-03-28 Lighting fixture used for microalgae cultivation and manufacturing method for said lighting fixture
CN201980003981.6A CN111164344B (en) 2019-03-28 2019-03-28 Lighting fixture for microalgae cultivation and manufacturing method of lighting fixture
CN202210587393.5A CN115046146B (en) 2019-03-28 2019-03-28 Lighting fixture

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201980003981.6A Division CN111164344B (en) 2019-03-28 2019-03-28 Lighting fixture for microalgae cultivation and manufacturing method of lighting fixture

Publications (2)

Publication Number Publication Date
CN115046146A CN115046146A (en) 2022-09-13
CN115046146B true CN115046146B (en) 2023-05-23

Family

ID=70562402

Family Applications (2)

Application Number Title Priority Date Filing Date
CN201980003981.6A Active CN111164344B (en) 2019-03-28 2019-03-28 Lighting fixture for microalgae cultivation and manufacturing method of lighting fixture
CN202210587393.5A Active CN115046146B (en) 2019-03-28 2019-03-28 Lighting fixture

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN201980003981.6A Active CN111164344B (en) 2019-03-28 2019-03-28 Lighting fixture for microalgae cultivation and manufacturing method of lighting fixture

Country Status (2)

Country Link
CN (2) CN111164344B (en)
WO (1) WO2020191738A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112930915A (en) * 2021-01-29 2021-06-11 浙江英特来光电科技有限公司 Packaged bowl and cup lamp with adjustable light source

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013059348A (en) * 2012-12-18 2013-04-04 Iwasaki Electric Co Ltd Light source for growing plant
CN103220902A (en) * 2010-11-25 2013-07-24 夏普株式会社 Light emitting device, LED light source for plant cultivation, and plant factory
CN203190151U (en) * 2013-04-22 2013-09-11 宁波成利照明科技有限公司 Plant lighting device
CN105202484A (en) * 2015-09-04 2015-12-30 李欣澄 LED composite full-spectrum light source capable of promoting plant growth
CN106248882A (en) * 2016-08-19 2016-12-21 河北神通光电科技有限公司 Plant illumination LED red blue spectrum ratio evaluation methodology
CN106764547A (en) * 2016-11-18 2017-05-31 中国计量大学 A kind of LED light supplement lamp for both culturing microalgae
CN107204394A (en) * 2017-06-06 2017-09-26 江苏鸿利国泽光电科技有限公司 A kind of LED lamp bead for fresh illumination
CN107543038A (en) * 2016-06-24 2018-01-05 台达电子工业股份有限公司 Plant growth lighting device
CN107916211A (en) * 2016-10-11 2018-04-17 诠兴开发科技股份有限公司 Mass production method of microalgae
CN108183099A (en) * 2017-12-21 2018-06-19 厦门市三安光电科技有限公司 A kind of White-light LED package structure and white light source system
CN108826098A (en) * 2018-06-27 2018-11-16 朗昭创新控股（深圳）有限公司 A kind of plant growth lamp
CN109285937A (en) * 2018-08-16 2019-01-29 佛山市国星光电股份有限公司 LED white light parts and preparation method thereof, LED backlight mould group

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101331840A (en) * 2008-05-20 2008-12-31 广西科学院 Method for promoting plant grow using light source and light source products thereof
CN101492602B (en) * 2009-02-16 2012-05-09 江苏博睿光电有限公司 Mixed fluorescent powder for white light emitting device and white light emitting device using the same
FI20095967A (en) * 2009-09-18 2011-03-19 Valoya Oy ILLUMINATOR
DK2668259T3 (en) * 2011-01-28 2017-05-01 Algaecytes Ltd Process for the preparation of microalgae, cyanobacteria and their metabolites
TW201323573A (en) * 2011-12-13 2013-06-16 Solidlite Corp Light-emitting diode for plant growth
WO2016154570A1 (en) * 2015-03-25 2016-09-29 Vitabeam Ltd. Method and apparatus for stimulation of plant growth and development with near infrared and visible lights
TWI580890B (en) * 2016-05-25 2017-05-01 國立中正大學 Light source module
CN106051544A (en) * 2016-06-08 2016-10-26 山东盈光新材料有限公司 LED light-supplementing plant lamp based on adjustable and controllable fluorescent powder spectra and production process
CN107706282A (en) * 2017-07-04 2018-02-16 区峰 The generation method of plant growth and the LED ecology light sources of human eye demand can be met simultaneously

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103220902A (en) * 2010-11-25 2013-07-24 夏普株式会社 Light emitting device, LED light source for plant cultivation, and plant factory
JP2013059348A (en) * 2012-12-18 2013-04-04 Iwasaki Electric Co Ltd Light source for growing plant
CN203190151U (en) * 2013-04-22 2013-09-11 宁波成利照明科技有限公司 Plant lighting device
CN105202484A (en) * 2015-09-04 2015-12-30 李欣澄 LED composite full-spectrum light source capable of promoting plant growth
CN107543038A (en) * 2016-06-24 2018-01-05 台达电子工业股份有限公司 Plant growth lighting device
CN106248882A (en) * 2016-08-19 2016-12-21 河北神通光电科技有限公司 Plant illumination LED red blue spectrum ratio evaluation methodology
CN107916211A (en) * 2016-10-11 2018-04-17 诠兴开发科技股份有限公司 Mass production method of microalgae
CN106764547A (en) * 2016-11-18 2017-05-31 中国计量大学 A kind of LED light supplement lamp for both culturing microalgae
CN107204394A (en) * 2017-06-06 2017-09-26 江苏鸿利国泽光电科技有限公司 A kind of LED lamp bead for fresh illumination
CN108183099A (en) * 2017-12-21 2018-06-19 厦门市三安光电科技有限公司 A kind of White-light LED package structure and white light source system
CN108826098A (en) * 2018-06-27 2018-11-16 朗昭创新控股（深圳）有限公司 A kind of plant growth lamp
CN109285937A (en) * 2018-08-16 2019-01-29 佛山市国星光电股份有限公司 LED white light parts and preparation method thereof, LED backlight mould group

Also Published As

Publication number Publication date
CN111164344B (en) 2022-06-17
CN111164344A (en) 2020-05-15
WO2020191738A1 (en) 2020-10-01
CN115046146A (en) 2022-09-13

Similar Documents

Publication Publication Date Title
JP6330063B2 (en) Light source module
CN102597602B (en) Horticultural LED lighting assembly
CN110349941B (en) Full spectrum L ED plant lighting source
CN205177879U (en) A LED encapsulates integrated optical source for plant illumination
CN104037310A (en) Three-primary-color matching white-light LED based on carbon quantum dots and ZnCuInS quantum dots and preparation method thereof
CN103925483A (en) Novel LED (Light Emitting Diode) plant growth lamp
CN103629596B (en) A kind of laser instrument plant lamp and preparation method thereof
CN106796003A (en) One species solar spectrum LED structure
CN115046146B (en) Lighting fixture
CN110671645A (en) Multispectral high-power waterproof LED light supplement lamp
CN103672687A (en) LED lamp boards capable of improving tomato photosynthesis based on solar energy
CN103606619A (en) Near ultraviolet light-emitting diode capable of promoting growth of plants and preparing method thereof
CN210567830U (en) Multispectral high-power waterproof LED light supplement lamp
CN203036334U (en) Intelligent light emitting diode (LED) plant growing lamp
CN205227030U (en) Dull and stereotyped light source of LED for vegetation
CN204497231U (en) For LED encapsulation structure and the plant illumination device of plant illumination
CN110671646B (en) Multispectral waterproof LED light filling lamp with stepless adjustable energy ratio
CN203812904U (en) Near-ultraviolet light-emitting diode for promoting plant growth
TW201032705A (en) A light emitting diode lamp for cultivating plants and medical treatment
CN105333341B (en) Novel ecological light fixture
TW201216841A (en) Process for changing the growth rate of shrimp using light emitting diode illumination
CN210567829U (en) Multispectral waterproof LED light filling lamp with stepless adjustable energy ratio
CN202302930U (en) Light-emitting diode (LED) light-emitting module structure
CN208670692U (en) A kind of plant growth lamp
CN109315174A (en) A kind of LED plant lamp

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant