Monomeric solid state non-imaging light guide beam combining system, energy bias compensation method and applications

Abstract

The application belongs to the technical field of non-imaging light guide bundle, and particularly relates to a single solid-state non-imaging light guide bundle system, an energy bias compensation method and application. The single solid-state light guide is designed, and the light shaping surface thereof is defined by a high-order polynomial function and is limited by physical truncation. A plurality of off-axis input interfaces are arranged on an interface seat, and an energy bias compensation matrix is applied, in particular, a forced bias compensation angle is injected into the interface closest to the central optical axis, so that the straight-through Gaussian central light beam is forced to collide with the multiple total internal reflection by crossing overshoot. The central hot spot is dispersed, and the flat-top spot output of the full array light beam is realized without relying on an external scattering component. Meanwhile, the centroid of each off-axis channel is perfectly converged through a time-sharing working mode. The application effectively eliminates the dependence on wavelength and polarization state, has high robustness, and realizes super-high coupling efficiency and high-quality uniform flat-top spot output.

Description

Technical Field

[0001] This invention relates to the field of non-imaging optical guide beam combining technology, and more particularly to a single solid-state non-imaging optical guide beam combining system, energy bias compensation method and application. Background Technology

[0002] Currently, in high-end industrial and optoelectronic equipment scenarios such as vehicle-mounted lidar, high-brightness medical photon therapy devices, biochemical spectroscopy fluorescence detection equipment, and high-performance laser projection displays, it is often necessary to achieve efficient spatial beam combining and deep overlap homogenization of multiple spatially distributed laser diode (LD) array units with different divergence angles and operating wavelengths. Ultimately, a flat-top characteristic light spot with high spectral purity, high power density, and uniform energy distribution is generated on the system output coupling surface. This meets the specific geometric and energy index requirements of different applications such as ranging detection, clinical phototherapy, micro-fluorescence spectroscopy acquisition, and high-definition imaging projection for the output light field.

[0003] Traditional multi-path laser spatial beam combining often employs complex lens assemblies such as polarizing beam splitters (PBS), dichroic mirrors, and microlens arrays. However, these traditional solutions face the following insurmountable technical challenges in practical engineering applications and system integration: (1) High wavelength and polarization sensitivity: Dichroic mirrors and multilayer dielectric films are extremely sensitive to the wavelength of the beam. They can usually only perform narrowband beam combining for fixed discrete wavelengths (such as red, green and blue), which cannot meet the requirements of pure power superposition or continuous spectrum beam combining for arrays of the same wavelength. In addition, the PBS scheme has strict restrictions on the polarization state of the beam. Polarization depolarization caused by temperature drift or thermal stress of the laser will directly cause more than 50% of the fundamental mode energy loss.

[0004] (2) Uneliminable central hot spot and high attenuation loss. When dealing with closely arranged array surface light sources, traditional single TIR photoconductors tend to "straight out" laser beams near the center of the main axis due to geometric symmetry, failing to undergo sufficient total internal reflection folding at the light guide sidewall. This results in a "spiky hot spot" with extremely high energy accumulating in the central region of the light exit, which can easily burn out subsequent delicate components. If a full-layer scattering film or homogenizer is used to eliminate the hot spot at the light exit end, strong Fresnel reflection will be induced at large angles of incidence, and the scattering efficiency of different wavelengths will be inconsistent, causing severe dispersion and attenuation of no less than 15% of the overall light intensity.

[0005] (3) The environmental reliability and robustness are fragile. The traditional multi-component assembly of spatial reflection / refractive optical path contains a large number of fine-tuning moving parts. Faced with the severe vehicle driving vibration, continuous impact and high and low temperature alternation in the vehicle environment, the lens is very prone to micron-level deformation and optical path detuning, resulting in a precipitous drop in the overall optical coupling efficiency.

[0006] Therefore, there is an urgent need for a laser spatial beam combining solution that eliminates complex lens groups, requires no wavelength-selective coating, can eliminate central hot spots, and is suitable for harsh automotive environments. Summary of the Invention

[0007] This invention provides a single-unit solid-state non-imaging optical guide beam combining system, an energy bias compensation method, and its applications, solving the problems existing in the prior art. This invention constructs a composite optical architecture with multiple off-axis incident beams, asymmetric beam shaping, and coupled energy bias compensation matrices. This constrains multiple beams to complete total internal reflection transmission within the single solid-state optical guide, avoiding the risk of optical path spatial misalignment and achieving ultra-high coupling efficiency and high-quality, uniform flat-top beam output.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a single-unit solid-state non-imaging optical guide beam combining system for high-efficiency spatial beam combining and deep overlap homogenization of multiple LD light sources. The system includes an interface base, on the light-emitting side of which is a single-unit solid-state optical guide. The left end of the single-unit solid-state optical guide is the light-inlet end, and the right end is the light-emitting end face. The light-emitting end face is configured as an optical coupling interface. The front and rear sidewalls of the single-unit solid-state optical guide are symmetrically designed. From left to right, the sidewalls are, respectively, a truncating plane, a beam-shaping curved surface, and a through plane. The distance between two truncating planes is greater than the distance between two through planes. The profile of the beam shaping surface is characterized by a fifth-order polynomial function. The upper and lower end faces of the single solid-state light guide are symmetrically designed and smoothly and linearly taper from left to right. The interface base is provided with multiple off-axis input interfaces at uniform intervals. Each input interface is provided with a laser diode light source. A bias compensation angle is set for each laser diode light source in the slow axis direction to force each beam to achieve total internal reflection within the single solid-state light guide. An inclined plane is provided on the light-incident end corresponding to each laser diode light source. The inclined plane is set perpendicular to the incident direction of its corresponding laser diode light source.

[0009] Furthermore, the single solid-state light guide is made of a light-transmitting material, and a continuous light transmission channel without air gaps is formed inside it.

[0010] Furthermore, the single solid-state optical guide is made of quartz glass, germanium glass, or zinc selenide glass.

[0011] Furthermore, the fifth-order polynomial function characterizing the profile of the beam-shaping surface is:

[0012] In the formula, , , , , , , The coordinates representing the Z-axis, Represents the radius.

[0013] Furthermore, the length of the single solid-state light guide is 150mm, the width of the light-incident end of the single solid-state light guide is 38mm and the height is 8mm, the width of the light-outcident end face is 10.5mm and the height is 6mm, and the length of the through plane is 50mm.

[0014] Furthermore, the interface base is provided with an even number of input interfaces at uniform intervals, the distance between two adjacent input interfaces is 6mm, and all input interfaces are symmetrically designed with respect to the symmetrical planes of the front and rear side walls.

[0015] Furthermore, the single solid-state optical guide is made of quartz glass, and the fifth-order polynomial function is:

[0016] In the formula, , , , , , ; In this case, the energy bias compensation angles corresponding to the six input interfaces are +11.65°, +6.91°, +3.22°, -3.22°, -6.91° and -11.65° respectively.

[0017] Furthermore, the divergence half-angle of the laser diode light source is defined as not greater than 10° in the slow axis length direction, not greater than 25° in the fast axis height direction, and the light-emitting area is 1.0mm × 1.0mm.

[0018] Secondly, based on the premise of providing a single-unit solid-state non-imaging optical guide beam combining system in the first aspect, an energy bias compensation method is provided, including: The interface base and the single solid-state light guide are set in a coordinate system, with the X-axis representing the width direction of the single solid-state light guide, the Y-axis representing the height direction of the single solid-state light guide, and the Z-axis representing the length direction of the single solid-state light guide. The interface base is set at Z=0 and is parallel to the XY axis plane. The angle of refraction of light in the XZ plane after light enters a single solid-state optical guide. The calculation formula is:

[0019] In the formula, Let be the angle of incidence of light in the XZ plane relative to the Z-axis as the light propagates through the air; The refractive index of a single solid-state optical guide; For the first Offset compensation angle of the channel; The minimum critical angle for total internal reflection when light travels from an optically denser medium to an air interface. for:

[0020] Angle of incidence of light for:

[0021] With the first Channel offset compensation angle As variables, the goal is to achieve uniform energy distribution and maximum efficiency of the emitted light from the light-emitting end face, while satisfying the following conditions: The optimal offset compensation angle for output is found within the range of 0 to 20° using Matlab software.

[0022] Thirdly, the present invention provides the application of the single-unit solid-state non-imaging optical guide beam combining system described in the first aspect in vehicle-mounted lidar, high-brightness medical photon therapy devices, biochemical spectral analysis fluorescence detection, and high-performance laser projection display.

[0023] The beneficial effects achieved by one or more of the above technical solutions are as follows: This invention designs a single solid-state light guide with an asymmetric beam-shaping profile defined by a high-order polynomial function and subject to physical truncation, thus transforming traditional multi-lens optical beam combining into a simple single solid-state geometric beam combining. Multiple off-axis input interfaces are connected to the inlet, and an energy bias compensation matrix is ​​applied. Specifically, a forced bias angle is injected into the interface closest to the central optical axis, forcing the straight-through Gaussian central beam to undergo crossover and multiple total internal reflection collisions. This disperses the central hot spot and achieves a flat-top beam output for the entire array without relying on external scattering components. Simultaneously, perfect centroid convergence of each off-axis channel is achieved through a time-division multiplexing operation mode. This invention effectively eliminates dependence on wavelength and polarization state, exhibits extremely high robustness, and simultaneously possesses ultra-high coupling efficiency and a flat-top beam output. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0025] Figure 1 This is a schematic diagram showing the position of the light source in this invention; Figure 2 A schematic diagram of the structure for energy bias compensation of the light source of the present invention; Figure 3 This is a structural diagram of the single solid-state optical guide of the present invention; Figure 4 This is an XZ cross-sectional view of the solid-state optical guide of the present invention; Figure 5 This is a YZ cross-sectional view of the monolithic solid-state optical guide of the present invention; Figure 6 This is a simulation diagram of the optical path of the single-unit solid-state non-imaging optical guide beam combining system of the present invention; Figure 7 The spatial distribution of the exit pupils for the common operation of all channels in this invention; Figure 8 This is a thermal diagram showing the energy distribution of all channels working together in this invention. Figure 9 This is a simulation diagram of the spatial distribution of the exit pupil under the time-division multiplexing (TDM) mode of each independent channel in this invention; Figure 10 The far-field energy-angle distribution curves of each channel's output port in this invention are shown. In the figure, 1 is the interface socket, 2 is the single solid-state light guide, 3 is the light input end, 4 is the light output end face, 5 is the side wall, 501 is the truncated plane, 502 is the beam shaping surface, 503 is the straight plane, 6 is the symmetry plane, 7 is the upper end face, 8 is the lower end face, 9 is the input interface, 10 is the laser diode light source, and 11 is the inclined plane. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0028] Example 1

[0029] Figure 1-2As shown, in a first aspect, the present invention provides a single solid-state non-imaging optical guide beam combining system for high-efficiency spatial beam combining and deep overlap homogenization of multiple LD light sources. The system includes an interface base 1, on which a single solid-state optical guide 2 is provided on the light-emitting side. The left end of the single solid-state optical guide 2 is the light-inlet end 3, and the right end is the light-emitting end face 4. The light-emitting end face 4 serves as an optical coupling interface. The front and rear sidewalls of the single solid-state optical guide 2 are symmetrically designed. From left to right, each sidewall 5 consists of a truncating plane 501, a beam-shaping curved surface 502, and a through plane 503. The distance between two truncating planes 501 is greater than the distance between two through planes 503. The contour of the beam shaping surface 502 is characterized by a fifth-order polynomial function. The upper and lower end faces of the single solid-state light guide 2 are symmetrically designed and smoothly and linearly taper from left to right. Multiple off-axis input interfaces 9 are evenly spaced on the interface base 1. Laser diode light sources 10 are provided on the input interfaces 9. A bias compensation angle is set for each laser diode light source 10 in the slow axis direction to force each beam to achieve total internal reflection within the single solid-state light guide 2. An inclined plane 11 is provided on the light input end 3 corresponding to each laser diode light source 10. The inclined plane 11 is set perpendicular to the incident direction of its corresponding laser diode light source 10.

[0030] To facilitate understanding of the various dimensions and spatial relationships, the above-described single-unit solid-state non-imaging optical guide beam combining system is presented in a three-dimensional coordinate system. Specifically: Settings: Width corresponds to the X-axis, height corresponds to the Y-axis, and length corresponds to the Z-axis; like Figure 1-10As shown, interface base 1 is positioned along the X-axis (width) direction (Z=0), and the width of interface base 1 is 38mm. Then, L1 (center coordinates: X=-15mm, Y=0, Z=0), L2 (center coordinates: X=-9mm, Y=0, Z=0), L3 (center coordinates: X=-3mm, Y=0, Z=0), L4 (center coordinates: X=3mm, Y=0, Z=0), and L5 (center coordinates: X=9mm, Y=0, Z=0) are evenly spaced at 6mm intervals along the X-axis on interface base 1. The system has six input interfaces 9 (channels) L6 (center coordinates: X=15mm, Y=0, Z=0), and these six input interfaces 9 are symmetrically designed about the symmetry plane 6 of the front and rear sidewalls. They are used to connect at least two sets of laser emitting units (laser diode light sources 10) with independent divergence angles and spatial positions, and are centrally placed in the XY plane of the three-dimensional coordinate system. The divergence half-angle of the laser diode light source 10 is defined as no more than 10° in the slow axis X direction and no more than 25° in the fast axis Y direction. The emitting area of ​​each chip is 1.0mm × 1.0mm. The wavelength of the input laser diode light source 10 has very flexible selectivity, which can improve the combined power of multiple identical wavelengths, or achieve high-efficiency combined beams of different wavelengths across the entire spectrum. Positions L3 and L4 can be prioritized, employing a revolutionary spatial offset angle control: an optimized offset angle is forcibly injected into the two central laser units (L3 / L4) with coordinates ±3mm, so that the final output principal optical axis tilt angle reaches 3.22 (L4 is similarly symmetrically offset to -3.22). This offset value is a critical optimization value, ensuring that the edge high-order diverging light constrains the three-dimensional total internal reflection (TIR) ​​grazing angle to be always less than the medium critical angle of deep ultraviolet quartz (43.2°) when colliding with the sidewall. This achieves multiple oscillation mixing and ensures extremely high light transmittance.

[0031] like Figure 3 As shown, the single solid-state light guide 2, preferably made of quartz glass (refractive index n ≈ 1.46), is located on the light-emitting side of the input interface 9. It is a light guide body composed of a single transparent material, forming a continuous light transmission channel without air gaps inside. The light-emitting end face 4 of the single solid-state light guide 2 is defined as the final optical coupling interface, and the input end (light-incident end 3) interface size is 38mm (width). The input is 8mm (height), and the output end (light-emitting end face 4) interface size is 10.5mm (width). The output is 6mm (height), with a total length of 150mm (compressed section light guide with a reference length L=100mm). Furthermore, to constrain the installation dimension, the maximum horizontal physical half-width R_LIMIT of the sidewall is forcibly truncated to 19.0mm (i.e., the maximum cut-off value for the total physical width of the input port is 38.0mm). There is a straight-through section from Z=100mm to 150mm (i.e., the length of the straight-through plane is 50mm), and the final output half-width remains at 5.25mm (total output physical width 10.5mm).

[0032] like Figure 4-5 As shown, the beam shaping surface 502 (profile) of the monolithic solid-state optical guide 2 has an asymmetric geometric compression configuration on its sidewall 5, wherein the profile of the sidewall 5 is defined by a high-order polynomial function and is subject to truncation constraints in the horizontal direction by mutually parallel physical surfaces (truncation plane 501) to accommodate compact installation spaces. The sidewall profile is defined by a strict fifth-order polynomial equation:

[0033] In the formula, , , , , , , The coordinates representing the Z-axis, Represents the radius.

[0034] To accommodate extremely compact industrial / automotive installation spaces, the upper and lower surfaces (i.e., upper end face 7 and lower end face 8) of the single solid-state light guide 2 exhibit a smooth, linear taper from the light-incident end 3 to the light-exit end face 4 along the vertical Y-axis. Specifically, the height of the light-incident end 3 is 8.0 mm, and the height of the light-exit end face 4 is linearly compressed to 6.0 mm. The output beam is then limited to 10.5 mm by the beam shaping surface 502. Uniform output within a 6mm beam range.

[0035] An energy bias compensation matrix (setting a bias compensation angle for each input interface 9) is established with the zero position in the X direction strictly aligned with the most prominent part of the incident light end, using this as the absolute origin reference. This scheme abandons the conventional idea of ​​axially symmetrical incident light from optical guides, and introduces an asymmetric, non-parallel bias compensation angle for the spatial fold of each independent input interface 9. The physical center x-coordinate centers of each independent channel are respectively arranged at X=[-15, -9, -3, 3, 9,15] mm. The main output optical axis of the input interface 9 is not directly aligned with the geometric center of the output end face 4 of the single solid-state optical guide 2. For the central interfaces L3 and L4, which are closest to the central axis and most likely to form hot spots, this invention innovatively injects a forced bias compensation angle (absolute value 3.22°). This bias compensation angle forces the centroid of the Gaussian distributed direct light to actively deviate from the main geometric axis, causing it to cross the main central axis within a limited cavity length of 150 mm and experience a spatial crossover overshoot effect on the opposite side. This overshoot strongly overlaps spatially with the light reflected back from the opposite edge channel, fundamentally eliminating the central energy spike. The other light source channels are also equipped with corresponding offset compensation angles (see Table 1).

[0036] Table 1 - Energy Bias Compensation Angles Corresponding to Light Source Channels

[0037] Example 2

[0038] An energy bias compensation method is provided, comprising: The interface base 1 and the single solid-state light guide 2 are set in a coordinate system, with the X-axis representing the width direction of the single solid-state light guide 2, the Y-axis representing the height direction of the single solid-state light guide 2, and the Z-axis representing the length direction of the single solid-state light guide 2. The interface base 1 is set at Z=0 and is parallel to the XY axis plane. After light enters the single solid-state optical guide 2, the angle of refraction in the XZ plane The calculation formula is:

[0039] In the formula, Let be the angle of incidence of light in the XZ plane relative to the Z-axis as the light propagates through the air; The refractive index of the single solid-state optical guide 2; For the first Offset compensation angle of the channel; The minimum critical angle for total internal reflection when light travels from an optically denser medium to an air interface. for:

[0040] Fiber optic incident angle for:

[0041] With the first Channel offset compensation angle As variables, the goal is to achieve uniform energy distribution and maximum efficiency of the emitted light from the emitting end face 4, while satisfying the following conditions: The optimal offset compensation angle for output is found within the range of 0 to 20° using Matlab software.

[0042] Taking L1 (center coordinates: X=-15mm, Y=0, Z=0) as an example: Based on the fact that the light emitted by the LED chip has a horizontal divergence angle of 10° relative to the Z-axis, the most representative large-angle edge light rays are selected. The material is quartz. According to Snell's law, light travels from air (… ) enter quartz ( Refraction will occur, and the angle of refraction will be... for:

[0043] The above method was optimized to obtain... Therefore, the actual angle of incidence of the light within the medium is:

[0044] The following analysis explains why 18.48° was chosen as the angle of incidence.

[0045] When light travels through an optically dense medium ( ) to air ( At the interface, the minimum critical angle for total internal reflection for:

[0046] When light hits the sidewall, total internal reflection will occur as long as the angle of incidence is greater than 43.23°. Without offset compensation of 11.65°, the transition refraction angle of the light within the medium... When the angle is very small (e.g., 6.83°), the light ray travels almost parallel to the Z-axis. When it hits the side wall, the angle of incidence is... (Meets the requirement, much greater than 43.23°). However, because the LD is at the edge (-15mm), the light actually travels at an angle towards the sidewall. Without an offset compensation angle, the light might directly penetrate the sidewall or the angle of incidence might be insufficient. Adding an offset compensation angle of 11.65° changes the angle of incidence within the medium to 18.48°, allowing the light to better "aim" at a specific area of ​​the sidewall. Combined with the sidewall's expansion angle, this ensures that the local angle of incidence at a specific point remains greater than 43.23°. The remaining offset compensation angles can be determined using the same method.

[0047] When LD light only considers 0-degree light... ,but The actual angle of incidence of light within the medium is the offset compensation angle, which is the angle of incidence of the light source within the medium.

[0048] verify: A full 3D surface light source high-precision analytical tracking simulation was performed on the operating conditions of 6 input interfaces (9 channels) simultaneously and individually in a time-division manner. The simulation used a large sample (50,000 rays / channel) Gaussian far-field model input to realistically reproduce the spatial beam combining and distribution performance of the system.

[0049] like Figure 6-9 As shown, the input channels L1 (X=-15mm), L2 (X=-9mm), and L3 (X=-3mm) on the left are injected with positive bias compensation angles (+11.65°, +6.91°, and +3.22°, respectively), forcing the beam to undergo spatial crossover. At a cavity length of 150mm, the exit centroid of L3 successfully crosses the central axis, with an offset of ΔX=+1.1mm; similarly, the centroid of L4 (-3.22° offset) on the right overshoots to ΔX=-1.13mm. The actual system light transmittance for all off-axis channels is as follows: L1 (99.94%), L2 (99.99%), L3 (99.99%), L4 (99.98%), L5 (99.98%), and L6 (99.92%). All beam centroids perfectly converge to the ±1.5mm core mixing region at the exit pupil, achieving excellent spatial beam combining capability.

[0050] like Figure 10 As shown, at the output end, the X-axis far-field "energy-angle" distribution curve exhibits a clear and mirror-compliant "kaleidoscope discrete virtual image array" peak pulse distribution due to the limitation of the low-order discrete total internal reflection times caused by the optical guide cavity (38mm wide, 150mm long, small slow-axis divergence angle). In the Y-axis, the narrow cavity and large fast-axis divergence induce high-order multiple collisions of up to 7-10 times, causing countless virtual images to deeply diffuse and overlap, presenting a continuous and smooth Gaussian envelope curve. This asymmetric far-field angular distribution feature smooths the laser's spatial coherence, perfectly suppressing speckle noise without an external scattering film, ultimately achieving multi-source beam combining with a divergence half-angle within 40° at the multi-channel output port, with a light transmission efficiency greater than 99%.

[0051] This invention achieves zero-loss elimination of central hot spots and spatial beam convergence. The pioneering forced energy bias compensation-induced beam crossover effect enables near 100% high-efficiency beam homogenization even in extremely compact physical spaces. Furthermore, large-sample Gaussian surface light source tracking calculations show that the centroids of off-axis beams corresponding to all time-division independent working channels can accurately converge and return, overcoming the large-angle Fresnel reflection heat loss caused by traditional external scattering films.

[0052] The above specific embodiments should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, any alternative improvements or modifications made to the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0053] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A single-unit solid-state non-imaging optical guide beam combining system, characterized in that, This device is used for high-efficiency spatial beam combining and deep overlap homogenization of multiple LD light sources. It includes an interface base with a single solid-state light guide on the light-emitting side. The left end of the single solid-state light guide is the light-inlet end, and the right end is the light-emitting end face, which serves as an optical coupling interface. The front and rear sidewalls of the single solid-state light guide are symmetrically designed. From left to right, the sidewalls are a truncated plane, a beam-shaping surface, and a through plane. The distance between two truncated planes is greater than the distance between two through planes. The contour of the beam-shaping surface is characterized by a fifth-order polynomial function. The upper and lower end faces of the single solid-state light guide are symmetrically designed and smoothly linearly taper from left to right. The interface base has multiple off-axis input interfaces evenly spaced, each with a laser diode light source. Each laser diode light source is given a bias compensation angle in the slow axis direction, forcing each beam to achieve total internal reflection within the single solid-state light guide. An inclined plane is provided on the light-inlet end corresponding to each laser diode light source, and the inclined plane is perpendicular to the incident direction of its corresponding laser diode light source.

2. The single-unit solid-state non-imaging optical guide beam combining system according to claim 1, characterized in that, The single solid-state optical guide is made of a light-transmitting material, and its interior forms a continuous light transmission channel without air gaps.

3. The single-unit solid-state non-imaging optical guide beam combining system according to claim 2, characterized in that, The single solid-state optical guide is made of quartz glass, germanium glass, or zinc selenide glass.

4. The single-unit solid-state non-imaging optical guide beam combining system according to claim 3, characterized in that, The fifth-order polynomial function characterizing the profile of the beam-shaping surface is: In the formula, , , , , , , The coordinates representing the Z-axis, Represents the radius.

5. A single-unit solid-state non-imaging optical guide beam combining system according to claim 4, characterized in that, The single solid-state light guide has a length of 150mm, an incident light end width of 38mm and a height of 8mm, an exit light end face width of 10.5mm and a height of 6mm, and a through plane length of 50mm.

6. A single-unit solid-state non-imaging optical guide beam combining system according to claim 5, characterized in that, The interface base is provided with an even number of input interfaces at uniform intervals, and the distance between two adjacent input interfaces is 6mm. All input interfaces are symmetrically designed with respect to the symmetrical planes of the front and rear side walls.

7. A single-unit solid-state non-imaging optical guide beam combining system according to claim 6, characterized in that, The single solid-state optical guide is made of quartz glass, and the fifth-order polynomial function is: In the formula, , , , , , ; In this case, the energy bias compensation angles corresponding to the six input interfaces are +11.65°, +6.91°, +3.22°, -3.22°, -6.91° and -11.65° respectively.

8. A single-unit solid-state non-imaging optical guide beam combining system according to claim 1 or 7, characterized in that, The divergence half-angle of the laser diode light source is defined as not greater than 10° in the slow axis length direction, not greater than 25° in the fast axis height direction, and the light-emitting area is 1.0mm×1.0mm.

9. An energy bias compensation method, comprising the single-unit solid-state non-imaging optical guide beam combining system as described in any one of claims 1-8, wherein the compensation method comprises: The interface base and the single solid-state light guide are set in a coordinate system, with the X-axis representing the width direction of the single solid-state light guide, the Y-axis representing the height direction of the single solid-state light guide, and the Z-axis representing the length direction of the single solid-state light guide. The interface base is set at Z=0 and is parallel to the XY axis plane. The angle of refraction of light in the XZ plane after light enters a single solid-state optical guide. The calculation formula is: In the formula, Let be the angle of incidence of light in the XZ plane relative to the Z-axis as the light propagates through the air; The refractive index of a single solid-state optical guide; For the first Offset compensation angle of the channel; The minimum critical angle for total internal reflection when light travels from an optically denser medium to an air interface. for: Angle of incidence of light for: With the first Channel offset compensation angle As variables, the goal is to achieve uniform energy distribution and maximum efficiency of the emitted light from the light-emitting end face, while satisfying the following conditions: The optimal offset compensation angle for output is found within the range of 0 to 20° using Matlab software.

10. The application of the single-unit solid-state non-imaging optical beam combining system according to any one of claims 1 to 8 in vehicle-mounted lidar, high-brightness medical photon therapy instrument, biochemical spectral analysis fluorescence detection, and high-performance laser projection display.

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