A portable TSP and PSP composite excitation light source device

Abstract

The application discloses a TSP and PSP composite excitation light source device, which comprises a light source host, a light recycling scheme based on a free-form surface optical design, a dichroic mirror for mixing light rays emitted by two light source modules of different wavelengths and simultaneously outputting light signals of different wavelengths suitable for TSP and PSP, a light transmission module for coupling the light signals of different wavelengths mixed by the dichroic mirror into a solid-state cluster optical fiber to transmit the light signals, and an out-light module for using a multi-lens group structure to perform light distribution again on light rays at an exit end of the solid-state cluster optical fiber, so as to meet the adaptation of different optical windows, concentrate the light rays and enhance the light intensity, and also provide angle and effective light spot range control for the out-light. The application makes the optical structure of the light source more compact, provides convenience for simultaneous measurement of TSP and PSP technologies, can be flexibly applied in various complex experimental environments, and effectively improves the out-light stability and uniformity of the light source.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of aerospace aerodynamics industry detection, and particularly relates to a portable TSP and PSP composite excitation light source device. BACKGROUND

[0002] TSP (Temperature-Sensitive Paint) and PSP (Pressure-Sensitive Paint) are respectively an optical temperature measurement technology and an optical pressure measurement technology with advantages of non-contact, high spatial resolution and full-field measurement. When TSP / PSP is irradiated by excitation light of a specific wavelength, it will absorb the energy of the excitation light and emit emission light different from the wavelength of the excitation light, which is the "photoluminescence" of TSP / PSP. The measurement principle of TSP is based on the thermal quenching effect in the photoluminescence process, and the light intensity of the radiation light will decrease with the increase of temperature. Similarly, the measurement principle of PSP is based on the oxygen quenching effect in the photoluminescence process, and the PSP signal is affected by the air pressure in the surrounding environment, resulting in that the radiation light intensity is inversely proportional to the surface pressure. The development of TSP / PSP technology has great application prospects for complex flow phenomena such as transition, separation and shock boundary layer interference which exist universally in high-speed flow, and can meet the increasing demand for fine measurement.

[0003] The excitation light source is one of the important devices necessary for the application of TSP / PSP technology, and it has a great influence on the measurement results of TSP / PSP technology, so it is very important to choose a suitable excitation light source. Because TSP / PSP technology has high requirements for the excitation light source, the excitation light sources suitable for TSP / PSP field on the market cannot meet the demand of simultaneous measurement of TSP / PSP technology. Moreover, the currently available excitation light sources are either large in overall structure under good heat dissipation system, so they are limited by the size of the test space, or small in overall size, so that the heat dissipation system cannot be well solved, the power of the light source is too small, and the uniformity of the light source cannot be guaranteed, thereby affecting the test results. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art and provide a portable TSP and PSP composite excitation light source device.

[0005] Therefore, the present application provides a portable TSP and PSP composite excitation light source device, which comprises a light source host, a light transmission module and a light emitting module, wherein,

[0006] The light source host adopts a dichroic mirror to mix the light emitted by two light source modules of different wavelengths based on a light recycling scheme of free-form optical design, and outputs light signals of different wavelengths suitable for TSP and / or PSP.

[0007] The light transmission module is used for coupling the light signals of different wavelengths mixed by the dichroic mirror into a solid-state bundle fiber to transmit the light signals.

[0008] The light emission module is used for using a multi-lens group structure to re-optimize the light emitted by the bundle fiber, to meet the adaptation of different optical windows, and to concentrate and enhance the light intensity, and is also used for providing control over the light emission angle and effective spot range.

[0009] Preferably, the two light source modules of different wavelengths are fixed perpendicularly to each other in the optical cavity, the dichroic mirror is arranged in the optical cavity and forms a 45° angle with the two light source modules, the two different wavelengths are 395 nm and 460 nm, and the output mode of the light source host includes outputting light signals suitable for TSP, outputting light signals suitable for PSP, and simultaneously outputting light signals suitable for TSP and PSP.

[0010] Preferably, each light source module adopts an LED module, and a compound eye lens is used to integrate separate LED filaments into an integrated light source and realize collimation of the light beam.

[0011] Preferably, the LED module adopts a hexagonal seven-unit module arrangement, includes seven unit modules, and each unit module is a regular hexagon, and the center and the vertex of the regular hexagon can both place a lamp bead.

[0012] Preferably, the light source module includes a heat sink and a fan, and the heat sink adopts a pin-type aluminum profile heat sink.

[0013] Preferably, the bottom of the heat sink is coated with a uniform thickness of heat-conducting silicone thin layer.

[0014] Preferably, the light source host further includes an electronic module, adopts a combination of a high-power linear constant-current source design and a multi-stage feedback loop control hardware control system, realizes stable output of the light signals, and solves the problem of loop oscillation.

[0015] Preferably, the focal length f of the lens of the multi-lens group of the light emission module satisfies the following formula:

[0016]

[0017] Wherein, n is the refractive index, r1 is the convex surface radius of the object side, and r2 is the convex surface radius of the image side.

[0018] Preferably, the light-emitting module meets the adaptation of a minimum diameter Φ of 40mm optical window, the effective light spot changes in the range of diameter Φ of 100mm-250mm, and the light spot uniformity of the receiving surface is above 85%.

[0019] Preferably, the device further comprises a light-emitting connecting piece for realizing the connection of the device and external equipment.

[0020] Compared with the prior art, the advantages of the present application are that:

[0021] 1. Due to the difference in the wavelength of the excitation light source used in TSP / PSP technology, it is difficult for a single-wavelength light source to meet the experimental requirements when TSP and PSP technologies are simultaneously applied to experimental measurement, and two single-wavelength light sources are easily limited by the experimental space. The design of the excitation light source of the present application is to fix two light source modules of different wavelengths perpendicularly in the optical cavity inside the same light source main machine, mix the light emitted by the two light source modules through the dichroic mirror existing in the optical cavity, and use the compound eye lens integration method to form an integrated light source from the separated LED chips, so as to save the optical path, make the optical structure of the light source more compact, and provide convenience for simultaneous measurement of TSP / PSP technology.

[0022] 2. Due to the problems such as insufficient light incidence, low light source energy density, and too small light irradiation surface caused by the small optical window of the wind tunnel equipment and the large surface area of the experimental model during the simultaneous measurement of TSP / PSP technology, the light-emitting module of the present application uses a multi-lens group structure to design the light distribution of the light emitted by the fiber exit end again, so as to optimize the size and uniformity of the light spot of the system, ensure that it can be adapted to the optical window with a minimum diameter Φ of 40mm, and further meet the use requirements of small optical window and large measurement range, and can be flexibly applied in various complex experimental environments.

[0023] 3. The cooling objects inside the light source main machine are arranged according to the ideal air flow channel, the heat dissipation module is composed of a 60-needle aluminum profile radiator and a high-speed low-decibel fan, the space is effectively saved, the portable TSP / PSP composite excitation light source provided by the present application can continuously and stably dissipate heat under the conditions of multiple optical component transmission and compact optical structure, so as to improve the light-emitting stability and uniformity of the light source. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the overall structure schematic diagram of the TSP / PSP composite excitation light source device of the present application;

[0025] Figure 2 is the overall structure arrangement diagram of the light source main machine;

[0026] Figure 3 is a schematic diagram of the arrangement of the light core inside the light source;

[0027] Fig. 4(a) is a schematic diagram of the optical coupling light path simulation model of 395nm / 460nm, Fig. 4(b) is a two-dimensional distribution diagram of irradiance in the circular area, Fig. 4(c) is a one-dimensional distribution diagram of irradiance along the Y axis direction, Fig. 4(d) is a one-dimensional distribution diagram of irradiance along the X axis direction, Fig. 4(e) is a color bar corresponding to the numerical value of irradiance, and Fig. 4(f) is the data analysis result in the process of optical simulation;

[0028] Fig. 5 is a schematic diagram of the optical simulation model, wherein Fig. 5(a) is a schematic diagram of the optical simulation model as a whole, and Fig. 5(b) is a schematic diagram of the light-emitting module model of the multi-lens group structure;

[0029] Fig. 6 is a simulation result in a circular area with a diameter of 250mm, wherein Fig. 6(a) is a two-dimensional distribution diagram of irradiance in the circular area, Fig. 6(b) is a one-dimensional distribution diagram of irradiance along the Y axis direction, Fig. 6(c) is a one-dimensional distribution diagram of irradiance along the X axis direction, and Fig. 6(d) is a color bar corresponding to the numerical value of irradiance;

[0030] Fig. 7 is a simulation result in a circular area with a diameter of 180mm, wherein Fig. 7(a) is a two-dimensional distribution diagram of irradiance in the circular area, Fig. 7(b) is a one-dimensional distribution diagram of irradiance along the Y axis direction, Fig. 7(c) is a one-dimensional distribution diagram of irradiance along the X axis direction, and Fig. 7(d) is a color bar corresponding to the numerical value of irradiance;

[0031] Fig. 8 is a simulation result in a circular area with a diameter of 100mm, wherein Fig. 8(a) is a two-dimensional distribution diagram of irradiance in the circular area, Fig. 8(b) is a one-dimensional distribution diagram of irradiance along the Y axis direction, Fig. 8(c) is a one-dimensional distribution diagram of irradiance along the X axis direction, and Fig. 8(d) is a color bar corresponding to the numerical value of irradiance;

[0032] Figure 9 is a schematic diagram of the thermal simulation model of a single channel light source;

[0033] Fig. 10 is a thermal simulation result of a single channel light source, wherein Fig. 10(a) is a three-dimensional temperature distribution of the model, Fig. 10(b) is a two-dimensional temperature distribution contour diagram of the upper cross section of the model channel, and Fig. 10(c) is a two-dimensional temperature distribution contour diagram of the lower cross section of the model channel. DETAILED DESCRIPTION

[0034] The purpose of the present application is to optimize the layout of the light path system, improve the stability and uniformity of the light source, improve the efficiency of the heat dissipation system, and adapt to small light window and large measurement range, etc. A portable TSP / PSP composite light source is proposed, which comprises a light source host, a light transmission module and a light-emitting module.

[0035] The light source host mixes the light emitted by two light source modules of different wavelengths by using a dichroic mirror based on a light recycling scheme of free-form optical design, and outputs light signals of different wavelengths suitable for TSP and / or PSP, that is, has three output modes: TSP, PSP, and TSP and PSP simultaneously outputting light signals of three wavelengths.

[0036] The light transmission module is used for coupling the light signals of different wavelengths mixed by the dichroic mirror into a solid-state bundle fiber, and performing long-distance, high-efficiency and high-uniformity transmission of the light signals.

[0037] The light emission module is used for using a multi-lens group structure to perform light distribution again on the light emitted by the bundle fiber, so as to meet the adaptation of different optical windows, and to concentrate the light and enhance the light intensity; and is also used for providing control over the angle and effective spot range of light emission.

[0038] The technical solutions of the present application will be described in detail below in combination with the drawings and embodiments.

[0039] Embodiment 1

[0040] As shown in the figure, embodiment 1 of the present application proposes a portable TSP / PSP composite excitation light source. Figure 1

[0041] The overall structure of the light source mainly includes a light source host, a light transmission module, a light emission module, and a light emission connecting piece; the structure of the light source host includes a shell, an optical cavity, an electronic module, a light source module, and the like; the optical cavity can increase the intensity of light on one hand, and on the other hand, the requirement for a specific wavelength light source is extremely high when TSP / PSP technology is measured, and the optical cavity can make the output light frequency more single and stable, so as to ensure the monochromaticity and coherence of the light source output light; the electronic module can control the opening and closing of the light source, adjust the power of the light source, and ensure that the output light intensity, frequency and other parameters remain stable; the light source module is the core part of the light source host, and includes a collimating mirror group, a light source, a heat sink, a fan and the like, and the main function is to generate laser with high intensity and good coherence through stimulated emission principle; the heat sink and the fan can dissipate the large amount of heat generated in the continuous light emission process of the light source in time, so as to ensure that the light source host works stably and normally in a suitable temperature range.

[0042] The light transmission module is mainly used for transmission of light signals.

[0043] The light emission module can focus light on one hand, so that the light is more concentrated, thereby enhancing the illumination intensity of the target area to meet the extremely high requirement of TSP / PSP technology on the illumination intensity; on the other hand, the angle and range of light emission can be controlled, so that the light covers a wider or narrower area, thereby solving the influence of the size of the space range on the measurement of TSP / PSP technology. ​

[0044] The light emitting connector is mainly used for connecting the light source system and external equipment to ensure that the light can be effectively and accurately transmitted.

[0045] The light source host part, as shown in Figure 2 adopts two light source modules A and B with different wavelengths, and the light source modules A and B are coupled through a dichroic mirror. The light source host part mainly includes a shell, an optical cavity, an electronic module, a light source module, etc. The light source module is composed of a collimating mirror group, a light source, a heat sink, a fan, etc. The light source modules A and B are fixed perpendicularly to each other in the optical cavity. The dichroic mirror is placed in the optical cavity and forms a 45° angle with the light source modules A and B. The optical cavity and the shell are fixed by screws;

[0046] The light source module adopts a light recycling scheme based on free-form optical design to improve the light source energy density;

[0047] Both of the two light source modules adopt LED modules. The compound eye lens integration method is used to integrate the separated LED filaments into a high-power integrated light source, and the collimation of the light beam is realized.

[0048] The LED light source layout adopts a hexagonal seven-unit module arrangement, as shown in Figure 3 , that is, a regular hexagon is taken as a basic unit, and a lamp bead can be placed at the top point and the center position of each regular hexagon. Seven such units are combined to form a module. Compared with a square arrangement, this arrangement has higher space utilization, can make the light source structure more compact, effectively improves the luminous intensity per unit area, helps to realize more uniform light distribution, and is also helpful for heat dissipation, thereby meeting the high luminous flux requirement.

[0049] As shown in FIG. 4(a), the light transmission module mainly includes a fiber transmission system, etc., which is responsible for transporting the light signal. A special dichroic mirror with long-wavelength light transmission and short-wavelength light reflection functions is used to couple the LEDs with different wavelengths in the two light source modules in the effectively arranged solid-state cluster optical fiber. This not only improves the efficient transmission of light, but also realizes the output of high-uniform light.

[0050] The light emitting module mainly includes a light emitting lens, etc. A multi-lens group structure is used to design the light distribution of the light emitted from the cluster optical fiber again to meet the adaptation of small rectangular optical windows and circular optical windows, and to realize the improvement of the effective light spot coverage range and light uniformity. The multi-lens group structure can focus the light on one hand, so that the light is more concentrated, thereby enhancing the illumination intensity of the target area to meet the extremely high requirements of TSP / PSP technology on illumination intensity, and on the other hand, the angle and range of light emission are controlled to make the light cover a wider or narrower area, thereby solving the influence of the space range size on the TSP / PSP technology during measurement.

[0051] The light emitting connecting piece is usually designed according to the actual structure size, mainly connecting the light source system with external equipment, to ensure that the light signal can be effectively and accurately transmitted;

[0052] The electronic module adopts a combination of high-power linear constant current source design and multi-stage feedback loop control hardware control system, realizes high stability output of the light source system, and solves the loop oscillation problem caused by multi-stage control;

[0053] The heat dissipation module of the host is composed of a pin type aluminum profile radiator and a high-speed low-power fan, which maximizes the space saving while realizing the timeliness and uniformity of heat dissipation, and protects the light source system to work continuously and stably;

[0054] A thin layer of heat-conducting silicone is applied to the bottom of the radiator to prevent heat blockage between the radiator and the PCB.

[0055] Embodiment 2

[0056] Embodiment 2 of the present application provides a design method of a TSP / PSP composite excitation light source device, comprising:

[0057] Step 1) Two light source modules use LED modules with wavelengths of 395nm and 460nm respectively, and the modules adopt an existing compound eye lens integration scheme to integrate separate LED chips into an integrated light source;

[0058] Step 2) Based on the consideration of light flux demand, existing optical materials, processing precision on light transmission process loss, LED (395nm, size 1.09mm*1.09mm, light flux 4W; 460nm, size 1.5mm*1.2mm, light flux 1.6W; ) and optical fiber specifications (NA 0.56, φ 10mm), Table 1 is the light transmittance parameters in an embodiment:

[0059] Table 1

[0060] Optical component Optical lens Compound eye lens Dichroic mirror Optical fiber Transmittance 0.95 0.90 0.85 0.40 Design Hexagonal compound eye Lens distortion 395 LED / circular fiber 460 LED / circular fiber Transmittance 0.825 0.80 0.78 0.628

[0061] It can be estimated that the number of 395nm LED and 460nm LED is about:

[0062]

[0063] The LED lamp bead is designed to adopt the array layout mode of the hexagonal seven-unit module group as shown in Figure 3 ;

[0064] Step 3) Special two-way beam splitter is integrated to couple two different wavelengths of LED light and transmit to the next focusing optical system, and then coupled into the solid-state bundled optical fiber;

[0065] Step 4) In the optical ray tracing software, the actual model is imported, and the optical simulation is performed. The parameters of each material and surface property are set according to the actual processing conditions. As shown in FIG. 4(a), it is a simulation model of 395nm / 460nm optical coupling light path. FIG. 4(b) is a two-dimensional distribution diagram of irradiance in the circular area. FIG. 4(c) is a one-dimensional distribution diagram of irradiance along the Y-axis direction. FIG. 4(d) is a one-dimensional distribution diagram of irradiance along the X-axis direction. FIG. 4(e) is a color bar corresponding to the irradiance value. FIG. 4(f) is the data analysis result in the process of optical simulation, including the error estimation peak value, the sample number, the total power of the light in the area, the irradiance and other parameters.

[0066] From the simulation result in FIG. 4, it can be seen that the light flux is 74.775W. Considering the actual conditions such as optical material absorption and interface loss, the light source obtained by the above technical method can meet the design requirements.

[0067] As shown in FIG. 5, it is an optical model of the optical fiber lens. FIG. 5(a) is a schematic diagram of the optical simulation model as a whole. FIG. 5(b) is an optical model of the light-emitting module with a multi-lens group structure.

[0068] Step 5) The light rays from the fiber exit end are designed again by using a multi-lens group structure. First, the initial structure of the lens group is determined. According to the optical principle, the types and arrangement order of the main optical elements through which the light rays from the fiber exit end pass are determined. Then, the initial parameters are set and optimized. According to the system requirements, the initial focal length of each lens is set. According to the relationship between the focal length of the lens and the curvature radius in formula (1), the initial lens curvature radius is calculated, where f is the focal length of the lens, n is the refractive index, r1 is the convex radius on the object side, and r2 is the convex radius on the image side. For a thin lens, r1=-r2.

[0069]

[0070] The light rays are focused at the required position, and the lens spacing is adjusted to optimize the spot size and uniformity of the system.

[0071] Step 6) The optical design software is used to perform ray tracing to check the optical performance of the system. FIG. 6 is a simulation result in a circular area with a diameter of 250mm. FIG. 6(a) is a two-dimensional distribution diagram of irradiance in the circular area. FIG. 6(b) is a one-dimensional distribution diagram of irradiance along the Y-axis direction. FIG. 6(c) is a one-dimensional distribution diagram of irradiance along the X-axis direction. FIG. 6(d) is a color bar corresponding to the irradiance value.

[0072] FIG. 7 is a simulation result in a circular area with a diameter of 180mm. FIG. 7(a) is a two-dimensional distribution diagram of irradiance in the circular area. FIG. 7(b) is a one-dimensional distribution diagram of irradiance along the Y-axis direction. FIG. 7(c) is a one-dimensional distribution diagram of irradiance along the X-axis direction. FIG. 7(d) is a color bar corresponding to the irradiance value.

[0073] Figure 8 shows the simulation results within a circular area with a diameter of 100 mm. Figure 8(a) is a two-dimensional distribution of irradiance within the circular area, Figure 8(b) is a one-dimensional distribution of irradiance along the Y-axis, Figure 8(c) is a one-dimensional distribution of irradiance along the X-axis, and Figure 8(d) is a color bar corresponding to the irradiance values.

[0074] As shown in Figures 6, 7 and 8 of the simulation results, the fiber optic lens assembly meets the requirements of adapting to an optical window with a minimum diameter of Φ of 40mm, covering the effective spot variation range of diameter Φ from 100mm to 250mm throughout the entire focusing range, and achieving a spot uniformity of over 85% on the receiving surface.

[0075] Step 7) The structure of the light source host includes multiple modules, including the outer shell, optical cavity, electronic module, light source module, etc. The light source module consists of collimating lens group, light source, heat sink, fan, etc. Light source modules A and B are fixed perpendicularly to each other in the optical cavity. The dichroic mirror is placed in the optical cavity, forming a 45° angle with the light source modules AB. The optical cavity and the outer shell are connected and fixed by screws.

[0076] Step 8) Select a pin-type aluminum profile heat sink and a low-power DC fan to form the heat dissipation system of the host. The heat sink is attached to the bottom of the electronic board to fully absorb heat. Then, the airflow caused by the rotation of the fan blows the heat away from the air outlets on both sides. The heat dissipation is completed in a cycle, ensuring the timeliness and uniformity of heat dissipation.

[0077] Step 9) Apply a thin layer of thermally conductive silicone to the bottom of the heat sink that is in contact with the electronic board. The thermal conductivity of the silicone is about 13 W / (mK) to prevent thermal blockage in the confined space due to the high thermal conductivity of air.

[0078] Step 10) Figure 9 As shown, thermal simulation studies were conducted on the light source of each channel. A 60-pin aluminum heat sink with a high-speed, low-decibel fan was selected for heat dissipation. The thermal simulation results are shown in Figure 10. Figure 10(a) shows the three-dimensional temperature distribution of the model, Figure 10(b) is a two-dimensional temperature distribution contour plot of the upper section of the model channel, and Figure 10(c) is a two-dimensional temperature distribution contour plot of the lower section of the model channel. The color gradient from yellow to red represents the temperature change from low to high. We obtained that the junction temperature of the LED light source module is 67.7℃ and the case temperature is less than 45℃, indicating that the heat dissipation model has good heat dissipation capabilities.

[0079] Finally, it should be noted that the above examples are merely used to illustrate the technical solutions of the present application but not to limit. Although the present application is explained in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A portable TSP and PSP combined excitation light source device, characterized by, The device comprises a light source host, a light transmission module and a light emitting module, wherein, The light source host adopts a dichroic mirror to mix the light emitted by two light source modules of different wavelengths based on a light recycling scheme of free-form optical design, and outputs light signals of different wavelengths suitable for TSP and / or PSP. The light transmission module is used for coupling the light signals of different wavelengths mixed by the dichroic mirror into a solid-state cluster optical fiber to transmit the light signals. The light emitting module is used for re-distributing the light emitted by the solid-state cluster optical fiber by using a multi-lens group structure to meet the adaptation of different optical windows, and to concentrate and enhance the light intensity, and is also used for providing control over the angle and effective spot range of light emission. The two light source modules of different wavelengths are fixed perpendicularly in an optical cavity, and the dichroic mirror is arranged in the optical cavity and forms a 45° angle with the two light source modules, the two different wavelengths are 395 nm and 460 nm respectively, and the output modes of the light source host include outputting light signals suitable for TSP, outputting light signals suitable for PSP, and simultaneously outputting light signals suitable for TSP and PSP. Each light source module adopts an LED module, and uses a compound eye lens to integrate separate LED filaments into an integrated light source and realize collimation of the light beam.

2. The portable TSP and PSP combined excitation light source apparatus according to claim 1, characterized by, The LED module adopts a hexagonal seven-unit module arrangement, and comprises seven unit modules, each of which is a regular hexagon, and the center and the vertex of the regular hexagon can both place a lamp bead.

3. The portable TSP and PSP combined excitation light source apparatus according to claim 2, characterized by, The light source module comprises a heat sink and a fan, and the heat sink adopts a pin-type aluminum profile heat sink.

4. The portable TSP and PSP combined excitation light source apparatus according to claim 2, wherein, The bottom of the heat sink is coated with a thin layer of uniform thickness of heat-conducting silicone.

5. The portable TSP and PSP combined excitation light source apparatus according to claim 4, wherein, The light source host further comprises an electronic module, which adopts a combination of a high-power linear constant-current source design and a multi-stage feedback loop control hardware control system to realize stable output of light signals and solve the problem of loop oscillation.

6. The portable TSP and PSP combined excitation light source apparatus according to claim 1, wherein, The focal length f of the multi-lens group of the light emitting module satisfies the following formula:

7. The portable TSP and PSP combined excitation light source apparatus according to claim 1, wherein, Wherein, n is the refractive index, r1 is the convex radius of the object side, and r2 is the convex radius of the image side. The light emitting module meets the adaptation of the minimum diameter Φ of 40 mm optical window, the effective spot range is 100 mm to 250 mm in diameter Φ, and the spot uniformity of the receiving surface is more than 85%.

8. The portable TSP and PSP combined excitation light source apparatus according to claim 7, wherein, The device further comprises a light emitting connecting piece for connecting the device and an external device.

9. The portable TSP and PSP combined excitation light source apparatus according to claim 1, wherein, ​

Images