CN116920132A - Ultraviolet light generating system - Google Patents
Ultraviolet light generating system Download PDFInfo
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- CN116920132A CN116920132A CN202210345637.9A CN202210345637A CN116920132A CN 116920132 A CN116920132 A CN 116920132A CN 202210345637 A CN202210345637 A CN 202210345637A CN 116920132 A CN116920132 A CN 116920132A
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- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
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- 239000004065 semiconductor Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 230000001954 sterilising effect Effects 0.000 description 30
- 238000004659 sterilization and disinfection Methods 0.000 description 29
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Led Device Packages (AREA)
Abstract
The invention discloses an ultraviolet light generating system, which is an ultraviolet light generating system for performing secondary light distribution on incident light by using a light distribution unit to form high-intensity and high-uniformity ultraviolet light.
Description
Technical Field
The present invention relates to an ultraviolet light generating system, and more particularly, to an ultraviolet light generating system that uses a light distribution unit to perform secondary light distribution on incident light to form high-intensity and high-uniformity ultraviolet light.
Background
Beginning in 12 2019, serious special infectious diseases (Coronavirus Disease-2019, abbreviated as COVID-19) are abused worldwide, related sterilization products are continuously updated due to the influence of the COVID-19 on the global environment, wherein C-band short wave ultraviolet rays (UltraViolet C radiation, abbreviated as UV-C or ultraviolet-C) are one of the most common sterilization modes, and the ultraviolet-C can kill or prevent bacteria by destroying the molecular structure of deoxyribonucleic acid (deoxyribonucleic acid, abbreviated as DNA) or ribonucleic acid (abbreviated as RNA) of microorganisms, and the ultraviolet-C can kill or inhibit all bacteria, viruses, parasites, pathogens or algae, and the like, and has no secondary pollution and no residual toxic substances; however, the following problems still remain in the ultraviolet-C sterilization apparatus used in the existing workshops:
1. because of the problem of the light emitting angle of the ultraviolet-C sterilization device, sterilization is difficult to be performed on a specific angle and space, and even the light emitted by the ultraviolet-C sterilization device can possibly irradiate the human body, so that the problems of radiation injury and the like are caused.
2. Because of the problem of the light emitting angle of the ultraviolet-C sterilization device, the emitted light energy is weaker, and if the effect of instant sterilization is to be achieved, a plurality of light emitting diodes are needed to increase the energy, so that the overall cost is increased.
3. Although the problems can be solved by using a light distribution structure of a general spherical or aspherical surface, the central light focusing range designed in this way is small, and the range which can be sterilized in practice is reduced; referring to fig. 1, a spherical or aspherical light distribution diagram of a conventional deep ultraviolet generating system is shown, wherein the conventional deep ultraviolet generating system has a sterilizing function only when the energy sterilization range after being reflected by a built-in reflection cup is too small, and the light intensity is above 0.9.
Therefore, by means of innovative hardware design, the defects of small condensing range and sterilization range of the center of the structure using the common spherical surface or the aspheric surface in the prior art can be effectively overcome, so that the light rays which are scattered are condensed into the light rays with a concentrated pattern and the irradiation range of the ultraviolet light rays with high intensity can be effectively increased, and the problems of development industry and related researchers of related industries such as ultraviolet light generation and sterilization systems need to be continuously strived to overcome and solve.
Disclosure of Invention
The invention mainly aims to provide an ultraviolet light generating system, in particular to an ultraviolet light generating system which uses a light distribution unit to carry out secondary light distribution on incident light rays to form ultraviolet light rays with high intensity and high uniformity, and mainly adopts a hardware design of a plurality of free-form surface structures arranged in the light distribution unit, so that first light rays incident by Light Emitting Diodes (LEDs) of a light emitting unit can be effectively reflected by a plurality of free-form surface structures to form emergent light of the ultraviolet light rays with high intensity and high uniformity, thereby solving the defects of small light gathering range, small sterilization range and the like in the structural center of the traditional ultraviolet light generating system which uses a common sphere or an aspheric surface, really achieving the main advantages of gathering divergent light rays into light rays with concentrated pattern, effectively increasing the irradiation range of the ultraviolet light rays with high intensity, being suitable for sterilization environments with high flow rate, being 3 times greater than the traditional ultraviolet light generating system, and the like.
In order to achieve the above-mentioned object, the present inventors propose an ultraviolet light generating system, which at least comprises a substrate, at least one light emitting unit, and at least one light distribution unit; the substrate comprises a first surface; the at least one light-emitting unit is arranged on the first surface of the substrate and is electrically connected with the substrate, wherein the light-emitting unit is used for emitting a first light; the at least one light distribution unit comprises a first opening, a second opening and a curved surface module, wherein the first opening is annularly arranged around the light emitting unit, the second opening is opposite to the first opening, the curved surface module is gradually reduced from the second opening to the first opening, and the curved surface module comprises a plurality of free-form surface structures used for reflecting first light rays of the light emitting unit.
An ultraviolet light generating system as described above, wherein the free-form surface structure is formed by the following formula 1:
where r is the radial image coordinate (radial coordinate), c is the curvature of the surface (curvature of the surface), k is the conic constant, N is the number of polynomial coefficients, ai is the coefficient of the ith expansion polynomial, and Ei is the ith expansion polynomial.
The ultraviolet light generating system as described above, wherein r, c, k are respectively 0 and are brought into formula 1, wherein n=1 to 14, the formula 1 can be simplified as shown in the following formula 2:
z＝C 1 x+C 2 y+C 3 x 2 +C 4 xy+c 5 y 2 +c 6 x 3 +c 7 x 2 y+c 8 xy 2 +c g y 3 + c 10 x 4 +c 11 x 3 y+c 12 x 2 y 2 +c 13 xy 3 +c 14 y 4 (equation 2)
Further, when y=0 is taken into formula 2, a free-form surface structural equation of xz plane can be obtained, as shown in the following formula 3:
z＝c 1 x+c 3 x 2 +c 6 x 3 +c 10 x 4 (equation 3)
Wherein c 1 A parameter value of-0.2 to-2.2, c 3 A parameter value of 0.5 to 2.5, c 6 A parameter value of-0.05 to-1, c 10 A parameter value of 0.005 to 0.15.
The ultraviolet light generating system as described above, wherein the substrate comprises a second surface opposite to the first surface, and the second surface may be further provided with a heat dissipating unit.
The above ultraviolet light generating system, wherein the heat dissipating unit is made of one of gold, copper, aluminum, ceramic or graphite.
The ultraviolet light generating system as described above, wherein a heat conducting medium may be further disposed between the second surface of the substrate and the heat dissipating unit.
The ultraviolet light generating system as described above, wherein the heat conducting medium is one of a heat conducting silica gel, a heat conducting paste or a ceramic chip.
The ultraviolet light generating system as described above, wherein the substrate is one of a glass circuit board, an aluminum circuit board, a copper circuit board, and the like.
The ultraviolet light generating system as described above, wherein the light emitting unit is one of a light emitting diode, a fluorescent lamp, or a semiconductor laser.
The ultraviolet light generating system as described above, wherein the wavelength of the first light is between 100nm and 280 nm.
The ultraviolet light generating system as described above, wherein the first opening comprises a first diameter and the second opening comprises a second diameter, and the second diameter is greater than the first diameter.
An ultraviolet light generating system as described above, wherein the second diameter is between 5mm and 20 mm.
The ultraviolet light generating system as described above, wherein the curved module is one of a reflector and a condenser lens.
In the ultraviolet light generating system, when the curved surface module is a reflector, the curved surface module is made of one of plastics or metals with reflective materials formed on the surface.
In the ultraviolet light generating system, the plastic with the reflective material formed on the surface is one of polymethyl methacrylate (Polymethyl methacrylate, abbreviated as PMMA), polycarbonate (PC), polytetrafluoroethylene (PTFE), and the like.
The ultraviolet light generating system as described above, wherein the metal is one of aluminum, silver, copper or gold.
In the ultraviolet light generating system, when the curved module is a condensing lens, the curved module is made of one of optical plastic or quartz glass.
The ultraviolet light generating system as described above, wherein the curved surface module comprises a height of between 3.5mm and 20 mm.
The ultraviolet light generating system as described above, wherein the free-form surface structure condenses the first light into a second light between 5 degrees and 30 degrees, and the second light exits from the second opening to the outside of the ultraviolet light generating system.
The ultraviolet light generating system comprises a plurality of light emitting units and a plurality of light distribution units correspondingly arranged.
The ultraviolet light generating system as described above, wherein the ultraviolet light generating system may further have a housing, and the second opening exposes the housing.
The ultraviolet light generating system as described above, wherein the ultraviolet light generating system may further be provided with a flow guiding pipe with a medium built in the second opening.
The ultraviolet light generating system as described above, wherein the medium is one of air, water or other liquid.
Therefore, the ultraviolet light generating system of the invention is mainly designed by means of hardware of a plurality of free-form surface structures arranged in the light distribution unit, and can effectively lead the first light rays incident by the Light Emitting Diodes (LEDs) of the light emitting unit to form emergent light of ultraviolet light rays with high intensity and high uniformity through multiple reflection of the plurality of free-form surface structures, so as to solve the defects of small condensation range, small sterilization range and the like of the structure center of the traditional ultraviolet light generating system using a common spherical surface or an aspheric surface, and truly achieve the main advantages of condensing the divergent light rays into light rays in a concentrated state, effectively increasing the irradiation range of the ultraviolet light rays with high intensity, being suitable for sterilization environments with high flow rate, being 3 times more than the traditional ultraviolet light generating system, and the like.
Drawings
Fig. 1: spherical or aspherical light distribution diagram of a conventional deep ultraviolet generating system.
Fig. 2: the ultraviolet light generating system of the present invention is a schematic overall structure of a preferred embodiment thereof.
Fig. 3: the ultraviolet light generating system of the invention is a schematic diagram of the combination of the light emitting unit and the light distribution unit in a preferred embodiment.
Fig. 4A and 4B: the ultraviolet light generating system of the invention has a general structural schematic diagram of one and two preferred embodiments.
Fig. 5: in the ultraviolet light generating system of the present invention, the reflection of the first light ray on the curved surface module is schematically shown.
Fig. 6: one embodiment of the ultraviolet light generating system of the present invention is compared with a conventional light distribution curve.
Fig. 7: the ultraviolet light generating system of the present invention is a curved module schematic diagram of a preferred embodiment.
Fig. 8: the ultraviolet light generating system of the invention is a light distribution curve comparison chart of a preferred embodiment.
Fig. 9: the curved surface module of the two preferred embodiments of the ultraviolet light generating system of the present invention is schematically shown.
Fig. 10: the light distribution curve comparison chart of the two preferred embodiments of the ultraviolet light generating system of the invention.
Fig. 11: the three preferred embodiments of the ultraviolet light generating system of the present invention are schematically illustrated as curved surface modules.
Fig. 12: the light distribution curve comparison chart of the three preferred embodiments of the ultraviolet light generating system of the invention.
Fig. 13: the filter screen arrangement of the fourth preferred embodiment of the ultraviolet light generating system of the present invention is schematically shown.
Fig. 14: the housing of the fifth preferred embodiment of the ultraviolet light generating system of the present invention is shown in the schematic diagram (I).
Fig. 15: the fifth preferred embodiment of the ultraviolet light generating system of the present invention has a schematic diagram (II) of the housing arrangement.
Fig. 16: the flow guiding pipe of the sixth preferred embodiment of the ultraviolet light generating system is schematically shown.
Description of the figure:
1: ultraviolet light generating system
11: substrate board
12: light-emitting unit
13: light distribution unit
131: a first opening
132: a second opening
133: curved surface module
1331: free-form surface structure
14: heat radiation unit
15: heat conducting medium
2: shell body
21: upper shell
211: holes and holes
22: lower shell
23: accommodating space
3: flow guiding pipe
31: medium (D)
4: filter screen
D1: first diameter
D2: second diameter
H: height of (1)
P: surface of the body
O: output unit vector of second light
I: incident unit vector of first light ray
N: a normal line.
Detailed Description
Firstly, referring to fig. 2 and 3, an overall structure diagram of a preferred embodiment of the ultraviolet light generating system of the present invention and a combination diagram of a light emitting unit and a light distribution unit are shown, wherein the ultraviolet light generating system 1 of the present invention is formed by combining at least a substrate 11, a light emitting unit 12, a light distribution unit 13, a heat dissipating unit 14 and a heat conducting medium 15; therefore, the ultraviolet light generating system 1 of the present invention is designed mainly by means of the hardware of the plurality of freeform structures 1331 disposed in the light distribution unit 13, so that the first light incident by the Light Emitting Diode (LED) of the light emitting unit 12 can be formed into the emergent light of the ultraviolet light with high intensity and high uniformity through the multiple reflection of the plurality of freeform structures 1331, thereby solving the defects of small condensing range and small sterilization range of the center of the structure of the conventional ultraviolet light generating system using the common spherical or aspheric surface, and really achieving the main advantages of condensing the divergent light into the light with concentrated state, effectively increasing the irradiation range of the ultraviolet light with high intensity, being suitable for the sterilization environment with high flow rate, being 3 times greater than the sterilization intensity of the conventional ultraviolet light generating system, and the like.
The substrate 11 is formed by combining a first surface (not shown) and a second surface (not shown), wherein the second surface is a lower surface of the substrate 11 and is arranged corresponding to the first surface of the upper surface, and the substrate 11 is made of one of a glass circuit board, an aluminum circuit board or a copper circuit board; in a preferred embodiment of the present invention, the substrate 11 is in the form of a copper circuit board, and the substrate 11 has functions of electrical conduction and thermal conduction, that is, the first surface of the substrate 11 is provided with a circuit structure (not shown) electrically connected to the light emitting unit 12, so as to provide the power required by the light emitting unit 12 in operation, and transfer the heat generated by the light emitting unit 12 in operation to the heat dissipating unit 14 disposed on the second surface, so that the heat dissipating unit 14 dissipates the heat to the outside of the uv light generating system 1.
In addition, the heat dissipation unit 14 is made of one of gold, copper, aluminum, ceramic or graphite, and a heat conducting medium 15 made of one of a heat conducting silica gel, a heat conducting paste or a ceramic sheet is disposed between the second surface of the substrate 11 and the heat dissipation unit 14, wherein the heat conducting medium 15 is used for bonding the substrate 11 and the heat dissipation unit 14; in a preferred embodiment of the present invention, the heat dissipating unit 14 is made of copper metal, the heat conducting medium 15 is a heat conducting silica gel, and the substrate 11 transfers the heat generated by the light emitting unit 12 to the heat dissipating unit 14 through the heat conducting medium 15, and then the heat dissipating unit 14 transfers the heat to the outside of the uv generating system 1, so as to achieve the heat dissipating effect of the uv generating system 1 or the light emitting unit 12.
The light emitting unit 12 is disposed on the first surface of the substrate 11 and electrically connected to the substrate 11, so as to receive the power required by the operation of the substrate 11; in addition, the light emitting unit 12 is one of a Light Emitting Diode (LED), a fluorescent lamp or a semiconductor laser, which emits a first light (not shown), and the wavelength of the first light is between 100nm and 285 nm; in a preferred embodiment of the present invention, the light emitting unit 12 is a Light Emitting Diode (LED) capable of emitting a first light with a wavelength ranging from 200nm to 285nm, wherein the first light is ultraviolet light emitted in a direction away from the substrate 11.
The light distribution unit 13 is formed by combining at least a first opening 131, a second opening 132 and a curved surface module 133, wherein the first opening 131 is annularly arranged around the light emitting unit 12 and has a first diameter D1, the second opening 132 is arranged at the other end of the curved surface module 133 relative to the first opening 131 and has a second diameter D2, the second diameter D2 is between 5mm and 20mm, the curved surface module 133 is tapered from the second opening 132 towards the first opening 131, the second diameter D2 of the second opening 132 is larger than the first diameter D1 of the first opening 131, the curved surface module 133 is formed by combining a plurality of free curved surface structures 1331 for reflecting the first light of the light emitting unit 12, the free curved surface structures 1331 can concentrate the first light emitted by the Light Emitting Diode (LED) of the light emitting unit 12 into a second light with a degree between 5 and 30 degrees, and the second light is emitted from the second opening 132 to the outside of the ultraviolet light generating system 1; in addition, the curved module 133 includes a height H between 3.5mm and 20mm, and referring to fig. 4A and 4B, which are schematic overall structures of one and two preferred embodiments of the uv light generating system according to the present invention, wherein fig. 4A and 4B are respectively one and two preferred embodiments of the uv light generating system 1 according to the present invention, and one preferred embodiment of the uv light generating system is different from the two preferred embodiments in that the second diameter D2 of the second opening 132 and the height H of the curved module 133 are different, but the second diameter D2 is different from the height H, but the second light can be condensed into a second light between 5 degrees and 30 degrees by the first light emitted by the Light Emitting Diode (LED) of the light emitting unit 12, and the second light is emitted from the second opening 132 to the outside of the uv light generating system 1.
In addition, the curved module 133 is one of a reflector or a condensing lens; when the curved surface module 133 is a reflector, the curved surface module 133 is made of one of plastic or metal with a reflective material formed on the surface, wherein the plastic with the reflective material formed on the surface is one of polymethyl methacrylate (PMMA), polycarbonate (PC) or Polytetrafluoroethylene (PTFE), and the metal is one of aluminum, silver, copper or gold; when the curved module 133 is a condensing lens, the curved module 133 is made of one of optical plastic or quartz glass.
Furthermore, in order to achieve high intensity and high uniformity of the secondary light distribution, the free-form surface structure 1331 is formed by the following formula 1:
where r in the formula 1 is a radial image coordinate (radial coordinate), c is a curvature of a curved surface (curvature of the surface), k is a conic constant (conic constant), N is the number of polynomial coefficients, ai is the coefficient of the i-th expansion polynomial, and Ei is the i-th expansion polynomial, where n=1 to 14.
If r, c, k are 0 respectively and are taken to be formula 1, where n=1 to 14, the formula 1 can be simplified to be shown in the following formula 2:
z＝c 1 x+c 2 y+c 3 x 2 +c 4 xy+c 5 y 2 +c 6 x 3 +c 7 x 2 y+c 8 xy 2 +c 9 y 3 + c 10 x 4 +c 11 x 3 y+c 12 x 2 y 2 +c 13 xy 3 +c 14 y 4 (equation 2)
Referring to fig. 5, a reflection diagram of a first light ray on a curved surface module of an ultraviolet light generating system according to an embodiment of the invention is shown, wherein the free-form surface structures 1331 adopt a rotationally symmetrical structure, so it is assumed that an incident unit vector I of a first light ray emitted by a Light Emitting Diode (LED) of the light emitting unit 12 is incident on a surface P of the free-form surface structure 1331, and an emergent unit vector O of a second light ray reflected by the surface P of the free-form surface structure 1331 is emitted parallel to a Z axis, wherein an included angle between the first light ray and a normal N of the surface P of the free-form surface structure 1331 is equal to an included angle between the second light ray and the normal N of the surface P of the free-form surface structure 1331, i.e. an incident angle is equal to a reflection angle.
If y=0 is taken into equation 2, the free-form surface structure 1331 equation of the xz plane can be obtained as shown in equation 3 below:
z＝c 1 x+c 3 x 2 +c 6 x 3 +c 10 x 4 (equation 3)
Similarly, if x=0 is taken to formula 2, then the free-form surface structure 1331 equation for the yz plane can be obtained as shown in formula 4 below:
z＝c 2 y+c 5 y 2 +c 9 y 3 +c 14 y 4 (equation 4)
Wherein the free-form surface structures 1331 of the surface module 133 are obtained in both the formulas 3 and 4 and are symmetrically equal to each other, so that the conditions in the formulas 3 and 4 have corresponding equal relations, i.e. c of the formula 3 1 C will be equivalent to equation 4 2 C of formula 3 3 C will be equivalent to equation 4 5 C of formula 3 6 C will be equivalent to equation 4 9 C of formula 3 10 C will be equivalent to equation 4 14 The method comprises the steps of carrying out a first treatment on the surface of the Wherein, in a preferred embodiment of the invention, c 1 A parameter value of-0.2 to-2.2, c 3 A parameter value of 0.5 to 2.5, c 6 A parameter value of-0.05 to-1, c 10 A parameter value of 0.005 to 0.15, thereby enabling the free-form surface structure of the curved surface module to have a larger structure center light condensing range and sterilization range; in addition, the curved module 133 configured in the uv generating system 1 of the present invention can obtain the second light with an angle of 5 degrees to 35 degrees emitted from the second opening 132 after the second light distribution of the free-form surface structures 1331 by the first light with an angle of 50 degrees to 140 degrees emitted from the Light Emitting Diode (LED) of the light emitting unit 12, wherein the second light has a higher intensity and uniformity than the first light; that is, referring to fig. 6, a comparison graph of a conventional light distribution curve and a preferred embodiment of the ultraviolet light generating system of the present invention is shown, wherein the ultraviolet light generating system 1 of the present invention has a larger light emitting angle when the light intensity is greater than 0.9The diagonal line in fig. 6 is a part of the ultraviolet light generating system 1 of the present invention, so that the ultraviolet light generating system 1 of the present invention has a larger structure center condensing range and sterilization range compared with the conventional ultraviolet light generating system.
Taking the following embodiments as examples, the ultraviolet light generating system of the present invention can have a larger structure center condensing range and sterilization range:
1. the included angle of the curved surface module 133 is 5 degrees: referring to fig. 7 and 8 together, a curved module diagram of a preferred embodiment of the uv light generating system according to the present invention and a comparison diagram of light distribution curves are shown, wherein an angle of 5 degrees is an included angle between two sides of a cross section of the curved module 133, that is, two sides of the curved module 133 extend 2.5 degrees from a normal direction of the curved module 133 to the left and right, that is, an opening angle of the second opening 132 is 5 degrees, and compared with a conventional uv light generating system, a preferred embodiment of the uv light generating system 1 according to the present invention can have a larger structure center light focusing range and sterilization range (as shown by the slant line in fig. 8).
2. The included angle of the curved surface module 133 is 12 degrees: referring to fig. 9 and 10 together, a curved module diagram of two preferred embodiments of the uv light generating system according to the present invention and a comparison graph of light distribution curves are shown, wherein the 12 degree angle is the included angle between two sides of the cross section of the curved module 133, that is, the two sides of the curved module 133 extend 6 degrees from the normal direction of the curved module 133 to the left and right, that is, the opening angle of the second opening 132 is 12 degrees, and compared with the conventional uv light generating system, one preferred embodiment of the uv light generating system 1 according to the present invention can have a larger structure center light collecting range and sterilization range (as shown by the slant line in fig. 10).
3. The included angle of the curved surface module 133 is 35 degrees: referring to fig. 11 and 12 together, a curved module diagram of the three preferred embodiments of the uv light generating system according to the present invention and a comparison graph of light distribution curves are shown, wherein the angle of 35 degrees is the included angle between two sides of the cross section of the curved module 133, that is, the two sides of the curved module 133 extend from the normal direction of the curved module 133 to the left and right 17.5 degrees, that is, the opening angle of the second opening 132 is 35 degrees, and compared with the conventional uv light generating system, one preferred embodiment of the uv light generating system 1 according to the present invention can have a larger structure center light focusing range and sterilization range (as shown by the oblique line portion in fig. 12).
In the comparison of the light distribution curves of the preferred embodiment to the third preferred embodiment of the present invention, the larger the angle of the curved module 133 is, the larger the opening angle of the second opening 132 is, and the larger the structure center light condensing range and the sterilization range of the ultraviolet light generating system 1 are.
In addition, please refer to fig. 13, which is a schematic diagram illustrating an embodiment of the uv light generating system according to the present invention disposed on a filter, wherein the uv light generating system 1 of the present invention includes three light emitting units 12 and three light distribution units 13 disposed correspondingly, and when the uv light generating system 1 is disposed in front of a filter 4, a more efficient sterilization effect can be achieved.
Furthermore, referring to fig. 14 and 15, a schematic diagram (one) of a housing arrangement and a schematic diagram (two) of a housing arrangement of a fifth preferred embodiment of the uv light generating system according to the present invention are shown, wherein the uv light generating system 1 is covered by a housing 2, and the housing 2 comprises an upper housing 21, a lower housing 22, and a receiving space 23 disposed between the upper housing 21 and the lower housing 22, the uv light generating system 1 is disposed in the receiving space 23, and the second opening 132 is exposed from the hole 211 of the upper housing 21.
In addition, referring to fig. 16, a schematic diagram of a flow guide tube arrangement of a sixth preferred embodiment of the uv light generating system according to the present invention is shown, wherein the uv light generating system 1 is provided with a flow guide tube 3 with a built-in medium 31 at the second opening 132, and the medium 31 is one of air, water or other liquid, in the sixth preferred embodiment of the present invention, the medium 31 is air, and when the second light is emitted from the second opening 132 and enters the flow guide tube 3, the second light collides with the air of the medium 31 in the flow guide tube 3 to generate refraction, so as to effectively ensure the traveling direction of the second light in the flow guide tube 3, thereby avoiding the occurrence of glare.
As can be seen from the above description, the ultraviolet light generating system of the present invention has the following advantages compared with the prior art and products:
the ultraviolet light generating system of the invention mainly utilizes the hardware design of a plurality of free-form surface structures arranged in the light distribution unit, and can effectively lead the first light rays incident by the Light Emitting Diodes (LEDs) of the light emitting unit to form emergent light of ultraviolet light rays with high intensity and high uniformity through multiple reflection of the plurality of free-form surface structures, so as to solve the defects of small condensation range, small sterilization range and the like of the center of the structure of the traditional ultraviolet light generating system using a common sphere or an aspheric surface, really achieve the main advantages of condensing the divergent light rays into light rays in a concentrated state, effectively increasing the irradiation range of the ultraviolet light rays with high intensity, being suitable for sterilization environment with high flow rate, being 3 times greater than the sterilization intensity of the traditional ultraviolet light generating system and the like.
Claims (15)
1. An ultraviolet light generating system, comprising at least:
a substrate (11) comprising a first surface;
at least one light emitting unit (12) disposed on the first surface of the substrate (11) and electrically connected to the substrate (11), wherein the light emitting unit (12) is configured to emit a first light, and a wavelength of the first light is between 100nm and 285 nm; and
the light distribution unit (13) comprises a first opening (131) which is arranged around the light emitting unit (12), a second opening (132) which is opposite to the first opening (131), and a curved surface module (133) which is gradually reduced from the second opening (132) towards the first opening (131), wherein the curved surface module (133) comprises a plurality of free-form surface structures (1331) which are used for reflecting first light rays of the light emitting unit (12).
2. The ultraviolet light generating system as defined in claim 1, wherein the freeform surface structure (1331) is formed by the following equation 1:
wherein r is the radial image coordinate, c is the curvature of the curved surface, k is the conic constant, N is the number of polynomial coefficients, ai is the coefficient of the ith expansion polynomial, and Ei is the ith expansion polynomial; wherein r, c, k are each 0 and are taken to be in formula 1, wherein n=1 to 14, the formula 1 can be simplified to be shown in the following formula 2:
z＝c 1 x+c 2 y+c 3 x 2 +c 4 xy+c 5 y 2 +c 6 x 3 +c 7 x 2 y+c 8 xy 2 +c 9 y 3 +c 10 x 4 +c 11 x 3 y+c 12 x 2 y 2 +c 13 xy 3 +c 14 y 4
(equation 2)
Further, by taking y=0 into equation 2, the freeform structure (1331) equation for the xz plane can be obtained as shown in equation 3 below:
z＝c 1 x+c 3 x 2 +c 6 x 3 +c 10 x 4 (equation 3)
Wherein c 1 A parameter value of-0.2 to-2.2, c 3 A parameter value of 0.5 to 2.5, c 6 A parameter value of-0.05 to-1, c 10 A parameter value of 0.005 to 0.15.
3. The uv light generating system according to claim 1 or 2, wherein the substrate (11) comprises a second surface opposite to the first surface, and the second surface is further provided with a heat dissipating unit (14).
4. A uv light generating system according to claim 3, wherein the heat dissipating unit (14) is made of one of gold, copper, aluminum, ceramic or graphite.
5. A uv light generating system according to claim 3, wherein a heat conducting medium (15) is further arranged between the second surface of the substrate (11) and the heat dissipating unit (14).
6. The ultraviolet light generating system as recited in claim 5, wherein the thermally conductive medium (15) is one of a thermally conductive silicone gel, a thermally conductive paste or a ceramic sheet.
7. The uv light generating system according to claim 1 or 2, wherein the substrate (11) is one of a glass circuit board, an aluminum circuit board or a copper circuit board.
8. The ultraviolet light generating system according to claim 1 or 2, wherein the light emitting unit (12) is one of a light emitting diode, a fluorescent lamp or a semiconductor laser.
9. The uv light generating system of claim 1 or 2, wherein the first opening (131) comprises a first diameter (D1) and the second opening (132) comprises a second diameter (D2), and the second diameter (D2) is larger than the first diameter (D1), wherein the second diameter (D2) is between 5mm and 20 mm.
10. The uv light generating system of claim 1 or 2, wherein the curved module (133) is one of a reflector or a condenser lens.
11. The uv light generating system of claim 1 or 2, wherein the curved module (133) comprises a height (H) of between 3.5mm and 20 mm.
12. The uv light generating system of claim 1 or 2, wherein the freeform surface structure (1331) condenses the first light into a second light between 5 degrees and 30 degrees, and the second light exits the uv light generating system (1) from the second opening (132).
13. The ultraviolet light generating system according to claim 1 or 2, wherein the ultraviolet light generating system (1) comprises a plurality of the light emitting units (12) and a plurality of the light distribution units (13) correspondingly arranged.
14. The uv light generating system according to claim 1 or 2, wherein the uv light generating system (1) further has a housing (2) covered by the second opening (132) exposing the housing (2).
15. The uv light generating system according to claim 1 or 2, wherein the uv light generating system (1) is further provided with a flow guide (3) with a medium (31) built in at the second opening (132).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210345637.9A CN116920132A (en) | 2022-03-31 | 2022-03-31 | Ultraviolet light generating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210345637.9A CN116920132A (en) | 2022-03-31 | 2022-03-31 | Ultraviolet light generating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116920132A true CN116920132A (en) | 2023-10-24 |
Family
ID=88376099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210345637.9A Pending CN116920132A (en) | 2022-03-31 | 2022-03-31 | Ultraviolet light generating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116920132A (en) |
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2022
- 2022-03-31 CN CN202210345637.9A patent/CN116920132A/en active Pending
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