A light distribution gradient compensation light column

Abstract

This invention relates to the field of light guide element technology, specifically to a light distribution gradient compensation light guide column. Its effective optical area is divided into multiple sequentially connected light guide segments of equal length. Each light guide segment includes a frosted segment and a smooth segment. The length of the frosted segment is determined as follows: based on a pre-obtained axial light output power distribution pattern of the light guide column, the total lateral light output of each light guide segment is calculated; then, the entrance light power of each light guide segment is calculated; based on the total lateral light output of each light guide segment, the entrance light power of each light guide segment, and a preset unit length extraction coefficient, the length of the frosted segment in each light guide segment is calculated. This technical solution, through an axial segmented structure design, ensures that the light output of the light guide column conforms to a preset axial light output power distribution pattern, achieving controllable light output and meeting the process requirements of high-precision photochemical reactions.

Description

Technical Field

[0001] This invention relates to the field of light guide element technology, and specifically to a light distribution gradient compensation light guide column. Background Technology

[0002] Photochemical reactions rely on photons to excite reactant molecules. In various photochemical reaction devices, it is usually necessary to guide the light emitted from the light source deep into the reaction medium to ensure that all regions of the reaction system receive effective irradiation. In existing photochemical reactors, the light source (such as a xenon lamp or LED array) is usually located at the top or side of the reactor. When the light passes through the reaction liquid or propagates in a traditional homogeneous light guide column, it undergoes exponential attenuation due to absorption and scattering by the medium. This results in excessively high light intensity in the region near the light source (which can easily trigger side reactions, thermal effects, or localized over-reactions), while the light intensity in the region far from the light source is severely insufficient (leading to incomplete reactions and low conversion rates).

[0003] To address the aforementioned issues, existing technologies typically employ either full-body polishing or full-body frosting on quartz light guides. Full-body polishing, based on the principle of total internal reflection, enables long-distance axial light transmission, resulting in minimal lateral light leakage. It only creates an effective irradiation area at the end of the guide, failing to achieve continuous lateral light emission along the axial direction, thus making it unsuitable for the full-area illumination requirements of long-range reactors. Full-body frosting allows some light to escape laterally after scattering, achieving lateral light emission from the guide. However, as light propagates within the light guide, its power continuously decreases with increasing propagation distance due to scattering and light extraction. With uniform frosting, the area near the light incident end exhibits high power and strong lateral light emission intensity, easily leading to localized over-reactions, byproduct formation, and accumulated thermal effects. Conversely, areas farther from the incident end experience severe power attenuation and insufficient light emission intensity, resulting in incomplete reactions, low overall conversion rates, and extremely poor axial light distribution uniformity, failing to meet the process requirements of high-precision photochemical reactions.

[0004] In summary, the axial light distribution of existing traditional light guide pillars does not meet the expected light distribution requirements of light guide pillars. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a light distribution gradient compensation light guide post to solve the problem that the axial light distribution of traditional light guide posts in the prior art does not meet the expected light distribution requirements.

[0006] According to a first aspect of the present invention, a light distribution gradient compensation light guide post is provided, comprising:

[0007] The light guide pillar body, and the effective optical area on the light guide pillar body; The effective optical region is divided into multiple sequentially connected light guide segments of the same length. Each light guide segment includes a frosted segment and a smooth segment distributed sequentially along the light propagation direction. The length of the abrasive section is determined as follows: The length of each light guide segment is calculated based on the length of the effective optical region and the number of light guide segments. Based on the pre-obtained axial light output power distribution pattern of the light guide column, calculate the total lateral light output of each light guide segment; Based on the preset incident light power of the light guide column, the axial output light power distribution pattern of each light guide segment, and the length of the light guide segment, calculate the entrance light power of each light guide segment; The length of the frosted section in each light guide segment is calculated based on the total lateral light output of each light guide segment, the entrance light power of each light guide segment, and the preset unit length extraction coefficient.

[0008] Preferably, when the axial light output power distribution of the light guide column is uniform, along the light propagation direction, the length of the frosted section increases and the length of the smooth section decreases among the plurality of light guide segments.

[0009] Preferably, when the axial light output power distribution of the light guide column is uniform, the total lateral light output of each light guide segment is calculated as follows: Substituting the lateral light output power per unit length and the length of the light guide segment into the following formula, the total lateral light output of the i-th light guide segment can be calculated. The formula is as follows:

[0010] in, The lateral output power per unit length is a constant; This refers to the length of the light guide segment.

[0011] Preferably, the input optical power of each light guide segment is determined as follows: Substituting the preset incident light power, the lateral light output power per unit length, and the length of the light guide column into the following formula, the entrance light power of the i-th light guide segment can be calculated. The formula is as follows:

[0012] in, The preset incident light power for the light guide column, Let be the length of the j-th light guide segment.

[0013] Preferably, the length of the frosted section in each light guide segment is determined as follows: Substituting the total lateral light output of each light guide segment, the entrance optical power of each light guide segment, and the preset unit length extraction coefficient into the following formula, the length of the frosted section in the i-th light guide segment is calculated. :

[0014] in, The coefficient is extracted per unit length, and is a constant.

[0015] Preferably, the light distribution gradient compensation light guide post further includes: The length of the smooth segment is determined in the following way: Calculate the difference between the length of the light guide segment and the length of the frosted segment in the i-th light guide segment to obtain the length of the smooth segment in the i-th light guide segment.

[0016] Preferably, the light guide column meets preset engineering constraints.

[0017] Preferably, the engineering constraints include: End residual constraint: The proportion of residual optical power at the end of the light guide post is less than or equal to a preset percentage; Minimum frosted processing length constraint: The length of the smallest frosted segment in the light guide column is greater than or equal to the preset minimum frosted processing length; Minimum number of frosted segments constraint: The number of frosted segments in the light guide column is greater than or equal to a preset number.

[0018] Preferably, when the axial light output power distribution of the light guide post is uniform, the range of the number of light guide segments is determined as follows: The range of values ​​for the number of light guide segments is calculated based on the preset residual light power ratio at the end, the minimum frosting processing length, and the preset extraction coefficient per unit length, where the lateral light output power per unit length is a constant.

[0019] Preferably, the number of light guide segments is determined as follows: Substituting the preset residual optical power ratio at the end, the minimum frosted processing length, and the preset unit length extraction coefficient into the following formula, we can obtain the range of values ​​for the number of light guide segments:

[0020] in, The percentage of residual optical power at the end. Minimum length for sanding process. Extract coefficients for preset unit lengths.

[0021] The technical solution provided by this invention may include the following beneficial effects: It is understood that the technical solution presented in this invention discloses a light distribution gradient compensation light guide column, whose effective optical area is divided into multiple sequentially connected light guide segments of equal length. Each light guide segment includes a frosted segment and a smooth segment. The length of the frosted segment is determined as follows: based on the pre-acquired axial light output power distribution law of the light guide column, the total lateral light output of each light guide segment is calculated; then, the entrance light power of each light guide segment is calculated; based on the total lateral light output of each light guide segment, the entrance light power of each light guide segment, and a preset unit length extraction coefficient, the length of the frosted segment in each light guide segment is calculated. This technical solution, through axial segmented structural design, actively compensates for the natural attenuation of light along the propagation path, so that the light output of the light guide column conforms to the preset axial light output power distribution law, achieving controllable light output and meeting the process requirements of high-precision photochemical reactions.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0024] Figure 1 This is a schematic diagram illustrating the steps of a method for determining the length of a frosted section of a light guide column according to an exemplary embodiment; Figure 2 This is a schematic diagram of a segmented light guide column structure according to an exemplary embodiment. Detailed Implementation

[0025] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0026] In one embodiment, a light distribution gradient compensation light guide column is provided, comprising: a light guide column body, and an effective optical region on the light guide column body; the effective optical region is divided into a plurality of sequentially connected light guide segments of the same length, each light guide segment including a frosted segment and a smooth segment sequentially distributed along the light propagation direction.

[0027] See Figure 1 The length of the abrasive section is determined as follows: Step S11: Calculate the length of each light guide segment based on the length of the effective optical region and the number of light guide segments.

[0028] For example, if the effective optical region length of the light guide column is L, and it is divided into N consecutive light guide segments, the length of each light guide segment is... .

[0029] Step S12: Calculate the total lateral light output of each light guide segment based on the pre-obtained axial light output power distribution pattern of the light guide column.

[0030] In practice, this step can be used to set the axial light output power distribution pattern of the light guide column according to the reaction or experimental requirements. Any custom pattern can be selected, such as uniform distribution, linear increasing / decreasing distribution, segmented step distribution, local enhancement distribution, parabolic distribution, etc.

[0031] Step S13: Calculate the entrance light power of each light guide segment based on the preset incident light power of the light guide column, the axial output light power distribution pattern of each light guide segment, and the length of the light guide segment.

[0032] The preset incident light power of the light guide column refers to the total light power input from the incident end face (light inlet end) of the light guide column after coupling through the focusing system, which is set in advance during the design stage; it represents the upper limit of the total light energy that the light source actually injects into the light guide column and can be used for lateral light emission, and is usually determined by the output power of the matching light source (xenon lamp, LED array) and the focusing coupling efficiency.

[0033] The axial power distribution pattern of each light guide segment refers to the distribution of the axial power output of the light guide column to each light guide segment. Taking a uniform distribution as an example, if the lateral power output per unit length is a constant, then the axial power distribution pattern of each light guide segment should be the same to achieve consistent axial global irradiance.

[0034] The entrance optical power of the i-th light guide segment refers to the remaining total optical power that remains inside the light guide column and has not yet been extracted by the frosted structure of that segment when the light propagates along the axial direction of the light guide column and reaches the starting end face of the i-th light guide segment.

[0035] Step S14: Calculate the length of the frosted section in each light guide segment based on the total lateral light output of each light guide segment, the entrance light power of each light guide segment, and the preset unit length extraction coefficient.

[0036] The extraction coefficient per unit length is a constant, determined by the grinding process parameters (laser power, scanning speed, and abrasive particle size). In practical applications, it can be determined through experimental or simulation methods.

[0037] When determining the preset unit length extraction coefficient using experimental methods, a section of known length L is processed. SThe incident light power P was measured on a pure frosted sample. in and output light power P out Substituting this into the following formula yields the extraction coefficient k per unit length:

[0038] This formula is derived from the original formula. We can deduce this by working backwards.

[0039] The simulation method involves creating a sample model with the same frosting parameters in optical simulation software (LightTools / Zemax), and extracting the value of the coefficient k by fitting the unit length through ray tracing.

[0040] Through step S14, the length of the frosted segment to be processed in each light guide segment can be obtained, and the length of the smooth segment to be processed can be derived from the length of the light guide segment and the length of the frosted segment. That is, each light guide segment consists of one frosted segment and one smooth segment, and the processed light guide column is composed of alternating frosted and smooth segments.

[0041] It is understood that the technical solution shown in this embodiment illustrates a light distribution gradient compensation light guide column, whose effective optical area is divided into multiple sequentially connected light guide segments of equal length. Each light guide segment includes a frosted segment and a smooth segment. The length of the frosted segment is determined as follows: based on the pre-acquired axial light output power distribution law of the light guide column, the total lateral light output of each light guide segment is calculated; then, the entrance light power of each light guide segment is calculated; based on the total lateral light output of each light guide segment, the entrance light power of each light guide segment, and a preset unit length extraction coefficient, the length of the frosted segment in each light guide segment is calculated. This technical solution, through axial segmented structural design, actively compensates for the natural attenuation of light along the propagation path, so that the light output of the light guide column conforms to the preset axial light output power distribution law, achieving controllable light output and meeting the process requirements of high-precision photochemical reactions.

[0042] In a preferred embodiment, the following description is given using a light guide column with uniform light distribution on the side surface of a high-transmittance JGS2 quartz glass as an example.

[0043] This embodiment uses a xenon lamp as the incident light source. The light emitted from the xenon lamp is converged by a condenser lens and enters the light guide column. According to the principle of total internal reflection, when the incident angle of the light on the side wall of the light guide column is greater than the critical angle, the transmitted light intensity is zero, and all the incident light energy is reflected back into the light guide column, thereby achieving efficient axial transmission of light. Because the light emitted from the condenser lens has a Gaussian distribution characteristic, and the angles at which each ray enters the light guide column differ, some rays do not meet the conditions for total internal reflection and escape from the side wall. At this time, the lateral light emitted along the length of the light guide column is generally weak, and the axial light distribution is uneven.

[0044] To achieve uniform lateral light intensity distribution along the length of the light guide column, based on the propagation law of light at the medium interface, frosted structures are set at different axial positions on the sidewall of the light guide column to break the condition of total internal reflection of light, allowing some light to be scattered by the sidewall and emitted laterally. In this embodiment, the frosting process parameters of the sidewall of the light guide column (including but not limited to surface roughness, scattering particle density, processing laser power and scanning speed) remain consistent along the axial direction, that is, the extraction coefficient k per unit length is constant; therefore, the light extraction efficiency of a single frosted section is determined only by the axial length of that frosted section, that is, the cumulative extraction efficiency of the frosted section in the i-th light guide segment. for:

[0045] Where k is the extraction coefficient per unit length. Let be the length of the frosted section in the i-th light guide segment.

[0046] Because light power attenuates during transmission due to lateral extraction, using equal lengths for all frosted segments would result in excessive light output at the front end and insufficient light output at the rear end of the light guide. Therefore, in this embodiment, the length of each frosted segment is varied along the light propagation direction (away from the light inlet). The design follows a monotonically increasing pattern: the area near the light inlet has higher optical power, so a shorter frosted section is used to reduce light extraction; the area farther from the light inlet experiences greater optical power attenuation, so a longer frosted section is used to increase light extraction. Through this gradient compensation mechanism of "compensating for efficiency with length," the lateral light output power density of each section can be made more consistent, ultimately achieving uniform axial light output from the light guide column.

[0047] In this embodiment, the effective optical area of ​​the light guide column is divided into several equally long light guide segments along the axial direction. Each light guide segment is composed of a frosted light-emitting segment and a smooth light-transmitting segment connected in series, and the total axial length of each light guide segment remains constant. Along the light propagation direction, the length of the frosted segment increases and the length of the smooth segment decreases, with the two lengths complementing each other.

[0048] The smooth section, due to its microscopic surface roughness, generates a trace amount of Fresnel transmitted light, on the order of approximately 0.1% to 0.5% / mm. The intensity of this trace lateral light decreases with decreasing smooth section length. This trend synergizes with the increasing light extraction rate in the frosted section, jointly compensating for the axial attenuation of optical power and further improving light emission uniformity. Since the light extraction coefficient of the smooth section is much smaller than the light extraction efficiency of the frosted section, its impact on light transmission can be neglected in first-order approximation calculations.

[0049] In summary, this embodiment focuses on the dominant control role of the frosting section length, by optimizing the frosting length of each section. By adjusting the gradient distribution, the uniformity of light output can be achieved.

[0050] Since the axial light output power distribution of the light guide column in this embodiment is uniform, the lateral light output power per unit length can be regarded as a constant I0.

[0051] First, the effective optical area of ​​the light guide column is divided into N consecutive light guide segments, and the length of each light guide segment is obtained.

[0052] This step divides the effective optical area of ​​the light guide post of length L into N (N≥1) continuous light guide segments along the axial direction, with each segment having a length of L. Each light guide segment consists of alternating frosted and smooth segments. Since the axial light output power distribution in this embodiment is uniform, it can be predicted that the length of the frosted segment along the light path propagation direction will be... It shows a monotonically increasing trend.

[0053] Then calculate the total lateral light output of each light guide segment.

[0054] Since the grinding process parameters (roughness, processing method, etc.) remain consistent along the axial direction, the extraction coefficient k per unit length is a constant, with the unit being mm. -1 The cumulative extraction efficiency of the frosted section of the i-th light guide segment. Calculated using Formula 1: Formula 1:

[0055] To achieve uniform axial light output, the lateral light output power per unit length is defined as a constant I0 (unit: W / mm). Then, the total lateral light output of the i-th segment... The calculation formula is Formula 2.

[0056] Formula 2:

[0057] The lateral output power I0 per unit length and the length of the light guide segment are considered. (Unit: mm) Substituting into Formula 2, we can obtain the total lateral light output of the i-th light guide segment. .

[0058] Then, the input optical power of each light guide segment is calculated.

[0059] The input optical power of the i-th light guide segment The calculation formula is given in Formula 3, which can be derived as follows: Formula 3:

[0060] in, The preset incident light power (in W) of the light guide column. Let be the length of the j-th light guide segment (in mm). This formula represents the input optical power of the i-th light guide segment. The total incident light power of the light guide column The difference between the incident light power of the i-1, i-2, ..., i-1 light guide segments and the total incident light power of the i-1, i-2, ..., i-1 light guide segments.

[0061] Then, the lengths of the frosted and smooth sections in each light guide segment are calculated.

[0062] The definition of light energy extraction is given in Formula 4:

[0063] By rearranging formulas 1, 2, and 4, we obtain formula 5:

[0064] The length of the frosted section in the i-th light guide segment can be obtained using Formula 5.

[0065] The difference between the length of the light guide segment and the length of the frosted segment in the i-th light guide segment is taken as the length of the smooth segment in the i-th light guide segment. See Formula 6.

[0066] Formula 6:

[0067] in, Let be the length of the i-th light guide segment. Let be the length of the smooth segment in the i-th light guide segment. Let be the length of the frosted section in the i-th light guide segment.

[0068] Regarding the determination of the number N of light guide segments, for the first light guide segment, its entrance light power P1 is equal to the incident light power P0.

[0069] Combining formulas 7 and 8, and substituting them into formula 5, we can obtain formula 9.

[0070] Formula 7:

[0071] Formula 8:

[0072] Formula 9:

[0073] in, This refers to the length of the first frosted section of the light guide; Formula 10 can be derived from Formula 9:

[0074] Since the minimum number of frosted sections should be 1, meaning the minimum number of light guide sections N is 1, we can deduce the range of values ​​for N:

[0075] in, The percentage of residual optical power at the end. This is the minimum length for sanding.

[0076] In a preferred embodiment, after calculating the length of the frosted section in each light guide segment, the method further includes: Calculate the length of the smooth section in each light guide segment based on the length of the frosted section and the length of the light guide segment in each segment; establish a three-dimensional model of the light guide column based on the lengths of the frosted and smooth sections in each light guide segment; call optical simulation software to establish an optical simulation model corresponding to the three-dimensional model of the light guide column; obtain the frosted scattering parameters, light source parameters, and condenser lens parameters of the light guide column; build a simulated optical path in the optical simulation model based on the frosted scattering parameters, light source parameters, and condenser lens parameters; run the optical simulation model to output the axial lateral illuminance distribution curve; optimize the lengths of the frosted and smooth sections in each light guide segment based on the axial lateral illuminance distribution curve and with the axial light output power distribution law as the target.

[0077] To compensate for the discrepancy between theoretical calculations and actual optical propagation characteristics, and to further improve the alignment between the actual light output distribution of the light guide column and the preset target, this embodiment includes a post-implementation simulation optimization step. First, a three-dimensional geometric model of the light guide column is constructed, transforming the axially segmented gradient structure into a digital carrier suitable for optical analysis. Next, professional optical simulation software such as LightTools is used to import the three-dimensional model and build a corresponding optical simulation environment. Simultaneously, parameters matching the actual working conditions are entered, and the incident light path is reconstructed in the simulation model. This simulates the entire process of light emanating from the light source, converging through a lens into the light guide column, undergoing axial transmission via total internal reflection, and being scattered laterally by the frosted structure. After running the simulation, the lateral illuminance distribution curve along the axial direction of the light guide column is output, visually presenting the actual light output effect corresponding to the theoretical dimensions.

[0078] Subsequently, using a pre-defined axial light output power distribution pattern as the optimization target, the difference between the simulated output illuminance curve and the target distribution was compared. The length ratio of the frosted and smooth sections within each light guide segment was then fine-tuned to correct the deviation. Understandably, this technical solution further ensures that the light output distribution of the actual manufactured light guide column more accurately matches the design requirements.

[0079] In a preferred embodiment, after integrating the frosted smoothing processing parameters, the method further includes: verifying the frosted smoothing processing parameters according to preset engineering constraints. The light guide column conforms to the preset engineering constraints.

[0080] The engineering constraints include: End residual constraint: The proportion of end residual optical power calculated based on the sanding and smoothing processing parameters is less than or equal to a preset percentage.

[0081] Minimum abrasive processing length constraint: The minimum abrasive segment length in the abrasive smoothing processing parameters is greater than or equal to the preset minimum abrasive processing length.

[0082] Minimum number of abrasive segments constraint: The number of abrasive segments in the abrasive smoothing processing parameters is greater than or equal to a preset number.

[0083] In a practical case, taking the effective optical region length L=98mm, incident light power P0=26.5W, and residual light power ratio at the end λ=10% as an example, the recursive solution process for the length of the frosted section and the smooth section in each light guide segment is as follows.

[0084] First, determine the number N of light guide segments: obtain the extraction coefficient per unit length k = 0.065mm. -1 (Based on the technological level of the frosting industry and the results of optical simulation), minimum frosting processing length Substituting into the formula for calculating the range of N, we can obtain 1≤N≤13.8. Considering that increasing the number of frosted segments can improve the uniformity of lateral light output from the light guide column, we take N=13.

[0085] Then, by combining formulas 1 to 6, the lengths of the frosted section and the smooth section in each light guide segment are calculated.

[0086] Based on the currently known parameters, the lateral light output power constant I0 per unit length is calculated using Formula 7, and the length of each light guide segment is calculated using Formula 8. .

[0087] With the initial incident light power P1=P0 as the initial condition, the loop iteration begins: Based on formulas 2 and 5, calculate the theoretical length of the frosted section of the current light guide segment, and then add the minimum frosted processing length during laser processing. Calculate the theoretical smooth segment length of the current light guide segment according to Formula 6. Calculate the entrance optical power of the next light guide segment according to Formula 3. Repeat this iterative process until the lengths of the frosted and smooth segments in all light guide segments are obtained.

[0088] After iteration, output the length of the frosted section of all 13 light guide segments. and smooth segment length and the input optical power of each light guide segment. It also automatically verifies engineering constraints.

[0089] After verification, a three-dimensional model is established using the calculated lengths of the frosted and smooth sections among all light guide segments as unique structural features. Based on this three-dimensional model, an optical simulation model is built using optical simulation software (LightTools). A simulated optical path is constructed by matching the same frosted scattering parameters, xenon lamp source, and condenser lens, and the axial and lateral illuminance distribution curves are output. The lengths of the frosted and smooth sections are then optimized accordingly.

[0090] See the schematic diagram of the optimized segmented light guide structure. Figure 2 . Figure 2 The light guide includes the flange 1, the non-functional area 2, and the functional area 3 of the light guide.

[0091] The flange 1 of the light guide column is the mounting and fixing structure of the light guide column, used to realize the positioning and sealed installation of the light guide column with the light source interface or equipment.

[0092] The non-functional area 2 of the light guide post is a high-transmittance section near the end of the light guide post, with a smooth polished surface. It is mainly used to efficiently transmit the incident light to the subsequent functional area.

[0093] The effective optical area 3 of the light guide column can be divided into a frosted section ( Figure 2 (Mid-shaded area) and smooth segment ( Figure 2 (Shaded area in Central Africa). From Figure 2 As can be seen, the frosted and smooth sections are arranged alternately, and the length of the frosted section generally increases along the direction away from the flange, which is used to compensate for the light intensity attenuation in the optical path and achieve uniform light output from the side.

[0094] The light guide column was processed and tested according to the optimized frosted smooth processing parameters. In the actual test, the surface uniformity of the light guide column reached 67.6%, the uniformity of the reaction area 3mm away from the light-emitting surface was improved to 75%, and the luminous efficacy reached 65.2%. This solved the unfavorable situation of the all-frosted light guide column having strong light emission at the near end and very weak light emission at the far end (expected uniformity of less than 20%).

[0095] This light guide column is a universal, independent light guide element that can be directly adapted for use in: liquid-phase photochemical synthesis reaction equipment, gas-liquid-solid three-phase photocatalytic degradation equipment, continuous flow microchannel photochemical reaction devices, photobiological reactions, and photocultivation lighting equipment. In use, simply arrange the light guide column vertically / horizontally / or in any other orientation within the equipment's optical path, connecting the top to the light source. No structural modifications to the existing reaction equipment are required, making it extremely versatile.

[0096] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0097] It should be noted that in the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means at least two.

[0098] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0099] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0100] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0101] Furthermore, the functional units in the various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0102] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0103] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0104] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A light distribution gradient compensation light guide post, characterized in that, include: The light guide pillar body, and the effective optical area on the light guide pillar body; The effective optical region is divided into multiple sequentially connected light guide segments of the same length. Each light guide segment includes a frosted segment and a smooth segment distributed sequentially along the light propagation direction. The length of the abrasive section is determined as follows: The length of each light guide segment is calculated based on the length of the effective optical region and the number of light guide segments. Based on the pre-obtained axial light output power distribution pattern of the light guide column, calculate the total lateral light output of each light guide segment; Based on the preset incident light power of the light guide column, the axial output light power distribution pattern of each light guide segment, and the length of the light guide segment, calculate the entrance light power of each light guide segment; The length of the frosted section in each light guide segment is calculated based on the total lateral light output of each light guide segment, the entrance light power of each light guide segment, and the preset unit length extraction coefficient.

2. The light distribution gradient compensation light guide post according to claim 1, characterized in that, When the axial light output power distribution of the light guide column is uniform, along the light propagation direction, the length of the frosted section increases and the length of the smooth section decreases among the plurality of light guide segments.

3. The light distribution gradient compensation light guide post according to claim 1, characterized in that, Assuming the axial light output power distribution of the light guide column is uniform, the total lateral light output of each light guide segment is calculated as follows: Substituting the lateral light output power per unit length and the length of the light guide segment into the following formula, the total lateral light output of the i-th light guide segment can be calculated. The formula is as follows: in, The lateral output power per unit length is a constant; This refers to the length of the light guide segment.

4. The light distribution gradient compensation light guide post according to claim 3, characterized in that, The input optical power of each light guide segment is determined as follows: Substituting the preset incident light power, the lateral light output power per unit length, and the length of the light guide column into the following formula, the entrance light power of the i-th light guide segment can be calculated. The formula is as follows: in, The preset incident light power for the light guide column, Let be the length of the j-th light guide segment.

5. The light distribution gradient compensation light guide post according to claim 4, characterized in that, The length of the frosted section in each light guide segment is determined as follows: Substituting the total lateral light output of each light guide segment, the entrance optical power of each light guide segment, and the preset unit length extraction coefficient into the following formula, the length of the frosted section in the i-th light guide segment is calculated. : in, The coefficient is extracted per unit length, and is a constant.

6. The light distribution gradient compensation light guide post according to claim 1, characterized in that, Also includes: The length of the smooth segment is determined in the following way: Calculate the difference between the length of the light guide segment and the length of the frosted segment in the i-th light guide segment to obtain the length of the smooth segment in the i-th light guide segment.

7. The light distribution gradient compensation light guide post according to claim 1, characterized in that, The light guide column meets the preset engineering constraints.

8. The light distribution gradient compensation light guide post according to claim 7, characterized in that, The engineering constraints include: End residual constraint: The proportion of residual optical power at the end of the light guide post is less than or equal to a preset percentage; Minimum frosted processing length constraint: The length of the smallest frosted segment in the light guide column is greater than or equal to the preset minimum frosted processing length; Minimum number of frosted segments constraint: The number of frosted segments in the light guide column is greater than or equal to a preset number.

9. The light distribution gradient compensation light guide post according to claim 1, characterized in that, When the axial light output power distribution of the light guide post is uniform, the range of the number of light guide segments is determined as follows: The range of values ​​for the number of light guide segments is calculated based on the preset residual light power ratio at the end, the minimum frosting processing length, and the preset extraction coefficient per unit length, where the lateral light output power per unit length is a constant.

10. The light distribution gradient compensation light guide post according to claim 9, characterized in that, The number of light guide segments is determined as follows: Substituting the preset residual optical power ratio at the end, the minimum frosted processing length, and the preset unit length extraction coefficient into the following formula, we can obtain the range of values ​​for the number of light guide segments: in, The percentage of residual optical power at the end. Minimum length for sanding process. Extract coefficients for preset unit lengths.

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