A light source device

Abstract

The utility model discloses a light source device, include: light source, set up on the preset axle, and light source is used for emitting the light of emitting to the side of preset axle, reflector, surround the preset axle and set, and the preset cutting line of reflector is curve, and the cutting line of reflector on the section along the preset axle includes two preset cutting lines with the preset axle symmetry, and reflector is used for making the emergent light of light source incident to reflector, and is reflected to target area by reflector, the utility model discloses a light source device passes through the reflector regulation and control light source's emergent light, makes the emergent light of light source emit to target area, can make light source device irradiation to the light energy density of target area improves, if this light source device is applied to sterilization, can improve the sterilization effect to target area, improves the sterilization efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical technology, and in particular to a light source device. Background Technology

[0002] Pulsed ultraviolet (UV) light sterilization technology utilizes the instantaneous release effect of UV light to kill bacteria, fungi, and other microorganisms. Compared with traditional UV sterilization, pulsed light sterilization is more thorough and has a stronger sterilization ability. Pulsed light can cause the microorganisms' repair system and enzymes to lose their activity, and the destruction of the bacterial structure is irreversible. Currently, it is mainly used in industries such as air purification, food hygiene, and water treatment.

[0003] The proportion of ultraviolet energy in the light source and the energy density received by the sample surface are key factors determining effective sterilization. Based on the spectral characteristics of pulsed light sources, as the voltage increases, the peak wavelength of the radiation shifts towards shorter wavelengths. By controlling the capacitance and input voltage, the content of the far-ultraviolet component in the spectrum can be increased. In practical applications, light sources with a high ultraviolet proportion should be selected, ideally above 20%. The energy density received by the sample surface depends on the light distribution of the light source. However, existing light sources used for pulsed intense light produce rotationally symmetric light distributions, with the axis of rotation being the axis containing the anode and cathode. This often results in a relatively low energy density value at the sample surface, leading to unsatisfactory sterilization effects and low sterilization efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a light source device that can be used for sterilization, improve sterilization effect, and increase sterilization efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A light source device, comprising:

[0007] A light source is positioned on a preset axis, and the light source is used to emit light that is emitted laterally toward the preset axis;

[0008] A reflective surface is arranged around the preset axis. The cross section of the reflective surface along the preset axis includes two preset cross sections that are symmetrical about the preset axis. The preset cross sections are curves. The reflective surface is used to allow the emitted light from the light source to be incident on the reflective surface and reflected by the reflective surface to the target area.

[0009] Optionally, the preset intercept line includes a first boundary point, a second boundary point, and at least one dividing point, wherein the at least one dividing point is located between the first boundary point and the second boundary point, and the segment of the preset intercept line between any two adjacent points among the first boundary point, the second boundary point, and the at least one dividing point is a curve segment.

[0010] Optionally, the segment between any two adjacent points includes at least one control point, and the segment between any two adjacent points is a curve segment defined by the at least one control point.

[0011] Optionally, on the cross section of the reflective surface along the preset axis, the first boundary point is farther away from the target area than the second boundary point, and the first boundary point is closer to the preset axis than the second boundary point. The distances from each point to the preset axis increase sequentially from the first boundary point to the second boundary point.

[0012] Optionally, on the cross section of the reflective surface along the preset axis, a Y axis is established with the preset axis as the Z axis and in a direction perpendicular to the preset axis;

[0013] The first boundary point, the second boundary point, and the at least one dividing point divide the preset line into at least two first segments. The difference in length along the Z-axis of any two of the at least two first segments is less than a first preset value, and the difference in length along the Y-axis of any two of the at least two first segments is less than the first preset value.

[0014] Optionally, any first segment includes at least one control point, which divides the first segment into at least two second segments, wherein the difference in length along the Z-axis of any two of the at least two second segments is less than a second preset value and the difference in length along the Y-axis of any two of the at least two second segments is less than the second preset value.

[0015] Optionally, the preset cross-section includes a first boundary point and a second boundary point. On the cross-section of the reflective surface along the preset axis, the first boundary point is farther away from the target area than the second boundary point, and the position of the first boundary point satisfies the following condition:

[0016] L = 2·d / tanθ;

[0017] Wherein, the distance from the first boundary point to the preset axis is L / 2, d represents the distance from the first boundary point to the light source along the preset axis on the cross section of the reflecting surface, and the divergence angle of the light source on the cross section of the reflecting surface along the preset axis is 2θ.

[0018] Optionally, the reflective surface is a curved surface that is rotationally symmetrical about the preset axis.

[0019] Optionally, it also includes:

[0020] The connecting surface is connected to the reflecting surface, and the preset cross-section includes a first boundary point away from the target area. The cross-section of the connecting surface along the preset axis is connected to the first boundary point of the preset cross-section.

[0021] Optionally, the light source includes: a tube;

[0022] An anode and a cathode are respectively disposed at opposite ends of the tube body and are arranged along the preset axis, for inputting electrical signals to the anode and the cathode to make the tube body emit light.

[0023] As can be seen from the above technical solution, the light source device provided by this utility model includes: a light source, disposed on a preset axis, for emitting light emitted laterally towards the preset axis; and a reflecting surface, disposed around the preset axis, the preset cross-section of the reflecting surface being a curve, the cross-section of the reflecting surface along the preset axis including two preset cross-sections symmetrical about the preset axis, the reflecting surface being used to allow the emitted light from the light source to be incident on the reflecting surface and reflected to the target area. The light source device of this utility model regulates the emitted light of the light source through the reflecting surface, enabling the emitted light from the light source to be emitted to the target area, thereby increasing the light energy density of the light irradiated by the light source device to the target area. If this light source device is applied to sterilization, it can improve the sterilization effect on the target area and increase the sterilization efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic cross-sectional view of a light source device along a preset axis, provided in one embodiment;

[0026] Figure 2 A schematic diagram showing two preset cross-sections of the reflective surface of a light source device according to an embodiment;

[0027] Figure 3 This is a schematic diagram of a light source device according to an embodiment, showing angles and distances on a cross section along a preset axis;

[0028] Figure 4 A schematic diagram illustrating the design process of the reflective surface of a light source device according to an embodiment;

[0029] Figure 5-1 This is a light intensity distribution diagram of a light source emitting light to both sides in a specific example.

[0030] Figure 5-2 This is a light intensity distribution diagram of light emitted from one side of a specific light source;

[0031] Figure 6 The light intensity distribution diagram is shown for a specific example of a light source device.

[0032] Figure 7-1 The illuminance diagram of the light source on the sample surface is shown for a specific example.

[0033] Figure 7-2 This is an illuminance diagram of a sample surface based on a specific example of a light source device.

[0034] The reference numerals in the accompanying drawings include:

[0035] 10-Preset axis, 11-Light source, 20-Reflecting surface, 21-First preset section line, 22-Second preset section line, 23-Connecting surface, 24-First boundary point, 30-Target area. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0037] This embodiment provides a light source device, including:

[0038] A light source is positioned on a preset axis, and the light source is used to emit light that is emitted laterally toward the preset axis;

[0039] A reflective surface is arranged around the preset axis. The cross section of the reflective surface along the preset axis includes two preset cross sections that are symmetrical about the preset axis. The preset cross sections are curves. The reflective surface is used to allow the emitted light from the light source to be incident on the reflective surface and reflected by the reflective surface to the target area.

[0040] The light source is positioned on a preset axis, emitting light that is directed to the side of the preset axis. The emitted light is incident on a reflecting surface and reflected, then emitted towards the target area. The preset cross-section being curved means that the preset cross-section is curved, i.e., the reflecting surface includes a curved surface. In this embodiment, the light source device controls the emitted light through the reflecting surface, ensuring the emitted light reaches the target area. This increases the light energy density irradiated by the light source in the target area. If this light source device is used for sterilization, it can improve the sterilization effect on the target area and increase sterilization efficiency.

[0041] For example, refer to Figure 1 , Figure 1 A schematic cross-sectional view of a light source device along a preset axis is provided in one embodiment, as shown below. Figure 1 As shown, the light source 11 is positioned on a preset axis 10. The cross-section of the reflecting surface 20 along the preset axis 10 includes a first preset cross-section 21 and a second preset cross-section 22 symmetrical about the preset axis 10. Both the first preset cross-section 21 and the second preset cross-section 22 are curved segments. The emitted light from the light source 11 is incident on the reflecting surface 20, reflected by the reflecting surface 20, and then emitted. The angle between the reflected light and the preset axis 10 is less than 90°.

[0042] In some embodiments, the preset intercept includes a first boundary point, a second boundary point, and at least one dividing point. The at least one dividing point is located between the first boundary point and the second boundary point. The segment of the preset intercept between any two adjacent points among the first boundary point, the second boundary point, and the at least one dividing point is a curved segment. The first boundary point and the second boundary point are the two boundary points of the preset intercept, and the at least one dividing point is a point on the preset intercept located between the first boundary point and the second boundary point. The curve shape of the preset intercept is defined by the first boundary point, the second boundary point, and the at least one dividing point. After the first boundary point and the second boundary point of the preset intercept are determined, the curve shape of the preset intercept can be adjusted by adjusting the position of the at least one dividing point. In practical applications, the first boundary point, the second boundary point, and the at least one dividing point of the preset intercept can be determined according to the emitted light distribution of the light source 11, the size of the target area 30, and the relative position of the target area 30 and the light source device, so that the curved shape of the reflecting surface 20 allows the emitted light from the light source 11 to illuminate the target area 30.

[0043] In some embodiments, the segment between any two adjacent points includes at least one control point, and the segment between any two adjacent points is a curve segment defined by the at least one control point. The at least one control point is located on the segment between any two adjacent points, and the curve segment between any two adjacent points is a curve segment whose curve shape is controlled by the at least one control point. After the first boundary point, the second boundary point, and at least one dividing point of the preset slit are determined, for any two adjacent points among the first boundary point, the second boundary point, and at least one dividing point, the curve shape of the segment can be adjusted by adjusting the position of the at least one control point of the segment. In practical applications, the first boundary point, the second boundary point, the at least one dividing point, and the at least one control point on each segment of the preset slit can be determined according to the emitted light distribution of the light source 11, the size of the target area 30, and the relative position of the target area 30 and the light source device, so that the emitted light of the light source 11 illuminates the target area 30 after being reflected by the reflecting surface 20. In some embodiments, the segment between any two adjacent points can be a spline curve.

[0044] In some embodiments, on the cross-section of the reflective surface 20 along the preset axis 10, the first boundary point is farther from the target region 30 than the second boundary point, and the first boundary point is closer to the preset axis 10 than the second boundary point. Points arranged sequentially from the first boundary point to the second boundary point have progressively increasing distances to the preset axis 10. These points include the first boundary point, a dividing point, a control point, and the second boundary point. Thus, the preset cross-section is a curve segment where the distance from the first boundary point to the second boundary point to the preset axis 10 increases progressively, and the reflective surface 20 is a curved surface where the distance from one end to the preset axis 10 increases progressively, allowing the reflective surface 20 to concentrate the emitted light from the light source 10 onto the target region 30.

[0045] In some embodiments, the at least one boundary point includes two boundary points, and the segment between any two adjacent points includes two control points. The segment between any two adjacent points is a curve segment defined by the two control points. That is, the preset intercept includes a first boundary point, a second boundary point, and two boundary points, with the two boundary points located between the first and second boundary points. The segment of the preset intercept between any two adjacent points among the first boundary point, the second boundary point, and the two boundary points includes two control points located on the segment between the any two adjacent points. The segment between the any two adjacent points is a curve segment, and its curve shape is controlled by the two control points. After the first boundary point, the second boundary point, and at least one boundary point of the preset intercept are determined, the curve shape of the segment between any two adjacent points among the first boundary point, the second boundary point, and at least one boundary point can be adjusted by adjusting the positions of the two control points in the segment. In some embodiments, the segment between any two adjacent points can be a spline curve.

[0046] The more boundary points set between the first and second boundary points, and the more control points set in the segment between any two adjacent points, the finer the control over the curve shape of the preset cross-section, but the greater the computational load during the design process. Therefore, considering both the control accuracy requirements for the surface shape of the reflective surface 20 and the computational load, it is more appropriate for the at least one boundary point to include two boundary points, and for the segment between any two adjacent points to include two control points. An example can be referred to... Figure 2 , Figure 2 This is a schematic diagram of two predetermined cross-sections of the reflective surface of a light source device according to an embodiment, as shown below. Figure 2 As shown, boundary point 1 represents the first boundary point, boundary point 4 represents the second boundary point, control point 1 and control point 2 are between boundary point 1 and boundary point 2, control point 3 and control point 4 are between boundary point 2 and boundary point 3, and control point 5 and control point 6 are between boundary point 3 and 4.

[0047] In this embodiment, the preset intercept can be considered to be a cubic B-spline curve, and therefore the preset intercept can be represented by a cubic B-spline curve equation. The overall equation of the B-spline curve is expressed as:

[0048] ;

[0049] ;

[0050] ;

[0051] Among them, P i The control curve contains characteristic points, where n indicates that there are n characteristic points. F i,n(t) represents the basis function. It can be n=3.

[0052] The control polygon of a cubic B-spline curve has four vertices, and the corresponding four basis functions are as follows:

[0053] ;

[0054] ;

[0055] ;

[0056] .

[0057] Each segment has 4 control points, including two boundary points and two control points. There are a total of 4 boundary points. Boundary point 1 and boundary point 4 are the boundary points of the preset cut-off line.

[0058] In some embodiments, on the cross-section of the reflective surface along the preset axis, a Y-axis is established with the preset axis as the Z-axis and in a direction perpendicular to the preset axis. The first boundary point, the second boundary point, and the at least one dividing point divide the preset section into at least two first segments. The difference in length along the Z-axis between any two of the at least two first segments is less than a first preset value, and the difference in length along the Y-axis between any two of the at least two first segments is also less than the first preset value. The difference in length along the Z-axis between any two of the at least two first segments is less than the first preset value, thus minimizing the difference in length along the Z-axis, and causing the at least one dividing point along the Z-axis to approximately evenly divide the preset section. The difference in length along the Y-axis between any two of the at least two first segments is less than a first preset value, making the difference in length along the Y-axis small. This ensures that the at least one dividing point along the Y-axis approximately bisects the preset section. This approximately bisects the preset section by the at least one dividing point, which helps to control the curve shape of the preset section relatively uniformly through the first boundary point, the second boundary point, and the at least one dividing point, resulting in a relatively uniform surface shape of the reflective surface. For example, as... Figure 2 As shown, the curve segment between boundary point 1 and boundary point 4 is the preset section of the reflective surface 20. Boundary point 2 and boundary point 3 approximately divide the segment between boundary point 1 and boundary point 4 equally, and the positions of both can be finely adjusted.

[0059] In some embodiments, any first segment includes at least one control point that divides the first segment into at least two second segments, wherein the difference in length along the Z-axis of any two of the at least two second segments is less than a second preset value, and the difference in length along the Y-axis of any two of the at least two second segments is less than the second preset value. For any first segment, it includes at least one control point that divides the first segment into at least two second segments.

[0060] The difference in length along the Z-axis between any two of the at least two second segments is less than a second preset value, making the difference in length along the Z-axis small, so that the at least one control point along the Z-axis approximately divides the first segment equally. Similarly, the difference in length along the Y-axis between any two of the at least two second segments is less than a second preset value, making the difference in length along the Y-axis small, so that the at least one control point along the Y-axis approximately divides the first segment equally. Thus, for any first segment, the at least one control point approximately divides the first segment equally. For example, the preset cutoff line includes boundary point 1, boundary point 2, boundary point 3, and boundary point 4. Two control points are set between adjacent boundary points, and these two control points approximately divide the segment between adjacent boundary points equally. The positions of the two control points can be finely adjusted. Changes in local control points do not affect the shape of the remaining freeform surface.

[0061] In some embodiments, the preset cross-section includes a first boundary point and a second boundary point. On the cross-section of the reflective surface 20 along the preset axis 10, the first boundary point is farther away from the target region 30 than the second boundary point. The position of the first boundary point satisfies the following condition:

[0062] L = 2·d / tanθ;

[0063] Wherein, the distance from the first boundary point to the preset axis is L / 2, d represents the distance from the first boundary point along the preset axis to the light source on the cross section of the reflecting surface along the preset axis, and the divergence angle of the light source on the cross section of the reflecting surface along the preset axis is 2θ. The first boundary point of the preset section of the reflecting surface 20 satisfies the above condition, so that the emitted light from the light source 11 is emitted outside the reflecting surface 20 as little as possible. For example, refer to Figure 3 , Figure 3 A schematic diagram of a light source device according to an embodiment, showing angles and distances on a cross-section along a preset axis, is shown below. Figure 3 As shown, the divergence angle of the light source 11 on the cross section of the reflecting surface 20 along the preset axis 10 is 2θ, the distance from the first boundary point 24 to the preset axis 10 is L / 2, and the distance from the first boundary point 24 along the preset axis 10 to the light source 11 is d.

[0064] In some embodiments, on the cross-section of the reflective surface 20 along the preset axis 10, the first boundary point is farther from the target region 30 than the second boundary point, and the first boundary point is closer to the preset axis 10 than the second boundary point. The distances from each point to the preset axis 10 increase sequentially from the first boundary point to the second boundary point. That is, compared to the end of the reflective surface closer to the target region 30, the end of the reflective surface farther from the target region 30 is more convergent and more convergent towards the preset axis 10. This causes the emitted light from the light source to be incident on the reflective surface, reflected, and converged to the target region 30.

[0065] In some embodiments, the reflective surface 20 is a curved surface that is rotationally symmetrical about a preset axis 10. The light source 11 emits light in all directions around the preset axis 10, and the reflective surface 20 can reflect the emitted light in all directions so that the light emitted by the light source 11 in all directions illuminates the target area 30.

[0066] In some embodiments, the light source device further includes: a connecting surface 23 connected to the reflecting surface 20, wherein the preset cross-section includes a first boundary point 24 away from the target region 30, and the cross-section of the connecting surface 23 along the preset axis 10 is connected to the first boundary point 24 of the preset cross-section. For example, see [reference needed]. Figure 1 As shown, the connecting surface 23 is connected to the reflecting surface 20. In some embodiments, the connecting surface 23 is a plane, which can reduce the difficulty of processing.

[0067] In some embodiments, the light source includes: a tube; an anode and a cathode, respectively disposed at opposite ends of the tube and arranged along a predetermined axis, for inputting electrical signals to the anode and cathode to cause the tube to emit light. The electrical signals input to the anode and cathode of the light source can be pulse signals, making the light source a pulsed high-intensity light source. Alternatively, the electrical signals input to the anode and cathode of the light source can be voltages. The light emitted by the light source has a bactericidal effect and may include ultraviolet light, enabling the light source device to be used for sterilization.

[0068] For reference Figure 4 , Figure 4 This is a schematic diagram illustrating the design process of the reflective surface of a light source device according to one embodiment. The design process of the reflective surface of the light source device in this embodiment is as follows:

[0069] Step 1: Based on the usage conditions, give the boundary conditions of the reflective surface 20.

[0070] The light source device includes a central connecting surface 23 and a side reflecting surface 20. The connecting surface 23 is a plane, and the reflecting surface 20 is a free-form surface. The reflecting surface 20 of this light source device has a rotationally symmetric structure, and its rotation axis, namely the preset axis 10, is parallel to the direction of the line connecting the anode and cathode of the light source 11.

[0071] The length of the connecting surface 23 on the cross section along the preset axis 10 satisfies the following condition: L = 2·d / tanθ, where L represents the length of the connecting surface 23 on the cross section along the preset axis 10.

[0072] The cross-section of the reflective surface 20 along the preset axis 10 includes two preset cross-sections symmetrical about the preset axis 10. Each preset cross-section is divided into three segments, consisting of four dividing points. The curves between adjacent dividing points are spline curves. Dividing point 1 is the edge point of the connecting surface 23, and dividing point 4 is the outermost point of the reflective surface 20, determined by the dimensions of the reflective surface 20. The intermediate dividing points 2 and 3 can be adjusted according to different irradiation conditions. Two control points are set between any two dividing points. The specific shape of the spline curve is adjusted according to the direction of light transmission to ensure that the light is transmitted to the target area 30 as much as possible.

[0073] Step 2: Set control points to further construct and optimize the optical structure.

[0074] Step 3: Perform simulation analysis on the results.

[0075] The optimization results of step two are simulated and analyzed to check the light distribution and light energy density. If the results are good, the optical structure obtained is the final structure. If the results are not good, return to step two to reselect and optimize the control points.

[0076] The light source device of this embodiment will be described in detail below with a specific example.

[0077] This light source device is used for sterilization. The sample surface is 50cm away from the light source device, and the sterilization area is a circular area with a radius of 25cm. This sterilization area is also the target area 30. Light source 11 uses a pulsed xenon lamp, with light intensity conforming to a Lambertian distribution and a divergence angle approximately 120°. (For reference...) Figure 5-1 and Figure 5-2 , Figure 5-1 This is a light intensity distribution diagram of a specific example of a light source emitting light to both sides. Figure 5-2 The above diagrams show the light intensity distribution of light emitted from one side of a specific light source, specifically light source 11. Light source 11 is placed vertically, meaning the line connecting its anode and cathode is parallel to the vertical direction; light source 11 is placed horizontally, meaning the line connecting its anode and cathode is parallel to the horizontal direction.

[0078] Assume the distance from the light source 11 to the connecting surface 23 is 20mm, and the total width of the optical structure of the reflecting surface 20 does not exceed 20cm and the height does not exceed 10cm.

[0079] Based on L=2∙d⁄tanθ, the dimension of the connecting surface 23 can be calculated to be 23mm. According to the maximum size requirement of the optical structure of the reflecting surface 20, the outermost edge dimension of the reflecting surface 20 should be less than 100mm. Therefore, the positions of the dividing point 1 ((y,z)=(11.5,-100)) and the dividing point 4 ((y,z)=(100,0)) can be determined. Boundary points 2 and 3 are approximately evenly distributed between boundary points 1 and 4, with boundary point 2 at (y,z)=(40,-70) and boundary point 3 at (y,z)=(70,-35). Between any two boundary points, there are two control points, also approximately evenly distributed. Specifically, the coordinates of the control points between boundary points 1 and 2 are (y,z)=(20,-90) and (y,z)=(30,-80); between boundary points 2 and 3 are (y,z)=(50,-60) and (y,z)=(60,-50); and between boundary points 3 and 4 are (y,z)=(80,-20) and (y,z)=(90,-10). Based on these coordinates, a two-dimensional contour map can be constructed in the Tracepro interactive software. (See reference.) Figure 2 As shown.

[0080] The initial structure of the reflective surface 20 is formed by rotating the two-dimensional contour map along the Z-axis. This structure is then imported into TracePro software, and the optimization function is set as follows: energy transfer efficiency of the target region 30 is greater than 80%, uniformity (average / maximum) is greater than 50%, and each control point of the reflective surface 20 is a variable. Interactive optimization is performed. The reflective surface 20 can be coated with a highly polished aluminum-coated quartz protective layer, which simultaneously improves ultraviolet and infrared reflectivity.

[0081] The final optimized structure was simulated and analyzed, including the light intensity distribution curve of the light source device and the illuminance of the sample surface. For example... Figure 6 , Figure 6 This is a light intensity distribution diagram of a specific example of a light source device. For example... Figure 7-1 and Figure 7-2 , Figure 7-1 The illuminance diagram of the sample surface as a specific example of the light source is the illuminance diagram of the sample surface when the bare light source 11 is placed vertically and the sample surface is directly below the light source 11. Figure 7-2 The image shows the illuminance diagram of a sample surface from a specific example of a light source device. The results demonstrate that the optical structure of the reflective surface 20 can effectively modulate light diverging in two directions into convergent light in the same direction. Figure 7-1 In the sample area, the minimum illuminance value is 0.21995 W / m². 2 The maximum illuminance value is 1.3929 W / m². 2 The average illuminance value is 0.9517 W / m². 2The light source 11 has a luminous power of 0.23792W, which is simulated with 241,555 rays. The light energy utilization efficiency is only 23.8%, and the average energy density of the sample surface is 0.95W / m2. Figure 7-2 In the sample area, the minimum illuminance value is 5.2571e-0.12 W / m². 2 The maximum illuminance value is 7.6026 W / m². 2 The average illuminance value was 4.1496 W / m². 2 The light source 11 has a luminous power of 0.81477W, which is simulated with 815722 rays, and the light energy utilization efficiency can reach 81.5%. It can be seen that compared with using a bare light source, the energy density value can be increased by more than 4 times when using the optical structure of reflective surface 20, that is, the sterilization effect can be improved by more than 4 times.

[0082] This light source device employs a reflective surface optical structure, which can modulate the light distribution of the light source. For sterilization sites in specific directions, it can improve the sterilization effect, increasing sterilization efficiency by more than four times. Users can adjust the structural form according to different application needs, facilitating customer adoption and reducing investment costs. The reflective surface optical structure increases the energy density of the sample surface during sterilization in specific directions, thus improving sterilization efficiency. The optical structure is highly practical, simple, and efficient to construct.

[0083] The present invention provides a detailed description of a light source device. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely illustrative and are intended to help understand the method and core concepts of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A light source apparatus, characterized by comprising: include: A light source is positioned on a preset axis, and the light source is used to emit light that is emitted laterally toward the preset axis; A reflective surface is arranged around the preset axis. The cross section of the reflective surface along the preset axis includes two preset cross sections that are symmetrical about the preset axis. The preset cross sections are curves. The reflective surface is used to allow the emitted light from the light source to be incident on the reflective surface and reflected by the reflective surface to the target area.

2. The light source apparatus according to claim 1, wherein The preset intercept line includes a first boundary point, a second boundary point, and at least one dividing point. The at least one dividing point is located between the first boundary point and the second boundary point. The segment of the preset intercept line between any two adjacent points among the first boundary point, the second boundary point, and the at least one dividing point is a curve segment.

3. The light source apparatus according to claim 2, wherein The segment between any two adjacent points includes at least one control point, and the segment between any two adjacent points is a curve segment defined by the at least one control point.

4. The light source apparatus according to claim 3, wherein On the cross section of the reflective surface along the preset axis, the first boundary point is farther away from the target area than the second boundary point, and the first boundary point is closer to the preset axis than the second boundary point. The distances from each point to the preset axis increase sequentially from the first boundary point to the second boundary point.

5. The light source apparatus according to claim 2, wherein On the cross-section of the reflective surface along the preset axis, a Y-axis is established with the preset axis as the Z-axis and in a direction perpendicular to the preset axis; The first boundary point, the second boundary point, and the at least one dividing point divide the preset line into at least two first segments. The difference in length along the Z-axis of any two of the at least two first segments is less than a first preset value, and the difference in length along the Y-axis of any two of the at least two first segments is less than the first preset value.

6. The light source apparatus according to claim 5, wherein Each of the first segments includes at least one control point, which divides the first segment into at least two second segments, wherein the difference in length along the Z-axis of any two of the at least two second segments is less than a second preset value and the difference in length along the Y-axis of any two of the at least two second segments is less than the second preset value.

7. The light source apparatus according to claim 1, wherein The preset cross-section includes a first boundary point and a second boundary point. On the cross-section of the reflective surface along the preset axis, the first boundary point is farther away from the target area than the second boundary point. The position of the first boundary point satisfies the following condition: L = 2·d / tanθ; Wherein, the distance from the first boundary point to the preset axis is L / 2, d represents the distance from the first boundary point to the light source along the preset axis on the cross section of the reflecting surface, and the divergence angle of the light source on the cross section of the reflecting surface along the preset axis is 2θ.

8. The light source apparatus according to any one of claims 1 to 7, characterized by The reflective surface is a curved surface that is rotationally symmetrical about the preset axis.

9. The light source apparatus according to any one of claims 1 to 7, characterized by Also includes: The connecting surface is connected to the reflecting surface, and the preset cross-section includes a first boundary point away from the target area. The cross-section of the connecting surface along the preset axis is connected to the first boundary point of the preset cross-section.

10. The light source apparatus according to claim 1, wherein The light source includes: tube body; An anode and a cathode are respectively disposed at opposite ends of the tube body and are arranged along the preset axis, for inputting electrical signals to the anode and the cathode to make the tube body emit light.

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