Design method of reflecting cover bus, medium, program, electronic terminal and reflecting lamp

Abstract

The invention provides a design method of a reflector bus, a medium, a program, an electronic terminal and a reflective lamp, firstly, a first equal luminous flux principle is used to constrain an irradiation point, and a relative position relation of incident light is determined based on a second equal luminous flux principle, so that the light irradiated to a target surface is uniform; thirdly, by setting the position of the A1 and combining the relative position of the incident light, iteratively solving the position of a reflection point on the generatrix of the reflecting cover; and finally, fitting the generatrix of the reflecting cover. According to the design method, the polarization degree of the light source, namely the position of the illumination section line (relative to the light source), is preset in advance, so that the light can integrally deviate towards the C0 direction, and the light in the C180 direction is obviously reduced. Therefore, when a person travels, light rays directly emitted to human eyes are greatly reduced, and uncomfortable glare is relieved.

Description

Technical Field

[0001] This application relates to the field of lighting fixtures, and in particular to a design method, medium, program, electronic terminal, and reflective lighting fixture for a reflector busbar. Background Technology

[0002] In confined spaces with low headroom, conventional lighting fixtures are prone to glare problems because their installation height is close to eye level. Specifically:

[0003] (i) For transmissive luminaires, since the light-emitting surface of the light source is directly exposed, people can directly see the high-brightness light-emitting surface and the uneven bright and dark granular light spots inside through the lens, which causes strong disabling glare.

[0004] (ii) For traditional reflector-type lighting fixtures, such as Figure 8 As shown, although the light-emitting surface of the light source is hidden, the design often only focuses on the lateral light distribution in the C90 / 270 direction, while neglecting the strict constraint on the light along the pedestrian's C0 / C180 direction of travel (especially the C180 direction). This results in a large amount of ineffective light shining directly into the eyes, causing uncomfortable glare. Especially on roads with low headroom, the large amount of rearward spillage light from the lamps can cause uncomfortable glare for drivers behind, which to some extent endangers driving safety. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this application is to provide a design method, medium, program, electronic terminal and reflective lamp for a reflector busbar to solve the aforementioned problems.

[0006] To achieve the above and other related objectives, a first aspect of this application provides a method for designing a reflector busbar, comprising: based on a first luminous flux principle and a preset reflective surface type, taking n illumination points {B1, B2, ..., B...} on the illuminance profile line L of the target surface. n The first equal luminous flux principle includes: for each segment on the illuminance profile line L defined by adjacent illumination points, the luminous flux received by the corresponding target surface area is equal; the position of the incident light on the reflector corresponding to each illumination point is determined according to the preset position A1; wherein, A1 is the reflection point closest to the light source O; the method for determining the position of the incident light includes: determining the incident light based on the position of A1 and the relative position of the incident light determined based on the second equal luminous flux principle. The location, and according to The position determines all other incident rays The position; where {A1,A2,...,A n} represents the reflection point of the incident light ray on the generatrix of the reflector, and the line connecting each reflection point and its corresponding illumination point constitutes the outgoing light ray. The second equal luminous flux principle includes: dividing the luminous intensity distribution domain of the light source O defined by the preset initial beam angle θ into (n-1) basic angular domains with equal luminous flux, and generating an incident ray at the boundary of each basic angular domain to obtain n incident rays. Based on the position of A1 and the incident ray The positions of other reflection points are iteratively calculated based on the location of A; wherein, the rules for the iterative calculation include: according to A j Position calculation A j The tangent vector on the generatrix of the reflector will be A j tangent vector and The intersection point is taken as A j+1 The position, j∈Z∩[1,n-1]; based on all reflection points {A1,A2,...,A... n The position and tangent vector of the reflector are used to perform curve fitting to obtain the reflector generatrix.

[0007] In one embodiment of the first aspect of this application, the position and length of the illuminance profile line are set based on the relative position of the light source O, the spacing between the light sources, and the type of the reflecting surface.

[0008] In one embodiment of the first aspect of this application, the reflective surface type includes a mirror surface, a Lambertian surface, and a hybrid surface; wherein, the hybrid surface is a mixture of a mirror surface and a Lambertian surface; and the n illumination points {B1, B2, ..., B...} are selected on the illuminance profile line L according to the reflective surface type. n The method includes: Let the coordinates of the i-th irradiation point be (l i ,-h); where the i-th illumination point refers to the i-th illumination point on the illuminance profile line when the light source is sorted from near to far, based on the projection point O' of the light source on the illuminance profile line. s is the distance from the projection point of the light source on the illuminance profile line to the nearest endpoint B on the illuminance profile line. n The distance, L, is the length of the illuminance profile line; and, when the reflecting surface type is a mirror, k i =1; when the reflecting surface type is a Lambertian surface, k i =a1×i+a2, or Where a1, a2, b1, b2, and b3 are constants; when the reflective surface type is a hybrid surface, Where c1, c2, and c3 are constants.

[0009] In one embodiment of the first aspect of this application, the statement according to A j Position calculation A jThe method for determining the tangent vector on the reflector generatrix includes: based on the law of reflection, according to A... j The position, combined with the position of the light source O and the B on the reflected light. j The position of A is calculated. j The normal vector on the generatrix of the reflector is used to calculate the tangent vector corresponding to that point.

[0010] In one embodiment of the first aspect of this application, the value of n should satisfy a convergence criterion; wherein, the convergence criterion includes: calculating and fitting an initial reflector busbar based on the value of n, and using 2n to replace n to calculate and fit a test reflector busbar; if the difference between the initial reflector busbar and the test reflector busbar is less than a preset range, then the value of n is deemed to satisfy the convergence criterion.

[0011] To achieve the above and other related objectives, a second aspect of this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in any of the preceding claims.

[0012] To achieve the above and other related objectives, a third aspect of this application provides a computer program product comprising computer program code that, when executed on a computer, causes the computer to perform the method described in any of the preceding claims.

[0013] To achieve the above and other related objectives, a fourth aspect of this application provides an electronic terminal, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the method described in any of the preceding claims.

[0014] To achieve the above and other related objectives, a fifth aspect of this application provides a reflective luminaire, comprising: a light source; a reflector, wherein the light source is disposed within the reflector; wherein the generatrix of the reflector is designed according to any of the preceding methods, and the axial width of the reflector matches the size of the light source.

[0015] In one embodiment of the fifth aspect of this application, the luminaire includes a plurality of light source-reflector modules; wherein each light source-reflector module is connected in a parallel and / or end-to-end manner.

[0016] As described above, this application has the following beneficial effects:

[0017] This invention provides a method for designing a reflector busbar. By determining n illumination points on the target surface and constraining these points using a first equal luminous flux principle, and determining the relative positional relationship of incident light rays based on a second equal luminous flux principle, the light illuminating the target surface is made uniform. Furthermore, by setting the position of A1 and combining it with the relative positions of the incident light rays, the positions of reflection points on the reflector busbar are iteratively calculated, and the reflector busbar is fitted accordingly. Since the polarization degree, i.e., the position of the illuminance profile (relative to the light source), is preset during the design of the reflector busbar, the light rays are shifted overall towards the C0 direction, and the light rays in the C180 direction are significantly reduced. Therefore, when people walk, the amount of light directly hitting their eyes is greatly reduced, thereby alleviating uncomfortable glare; especially on roads with low headroom, this reduces the degree of uncomfortable glare for drivers and improves driving safety. Attached Figure Description

[0018] Figure 1 The diagram shown is a flowchart illustrating the design method of the reflector busbar in one embodiment of this application.

[0019] Figure 2 The diagram shows the optical path of incident light after being reflected by the reflector's generatrix and exiting onto the illuminance profile line in one embodiment of this application (the reflecting surface is a mirror).

[0020] Figure 3 The diagram shows the optical path of incident light after being reflected by the reflector's generatrix and exiting onto the illuminance profile line in one embodiment of this application (the reflecting surface is a hybrid surface).

[0021] Figure 4 The diagram shows the optical path of incident light after being reflected by the reflector's generatrix and exiting onto the illuminance profile line in one embodiment of this application (the reflecting surface is a Lambertian surface).

[0022] Figure 5 The diagram shown is a schematic representation of the basic corner domain division in one embodiment of this application.

[0023] Figure 6 The diagram shows the optical path of incident light after being reflected by the reflector's generatrix and exiting onto the illuminance profile line in one embodiment of this application (the reflecting surface is a mirror).

[0024] Figure 7 The diagram shown is a structural schematic of a reflective lamp in one embodiment of this application.

[0025] Figure 8 The diagram shown is a structural schematic of a reflective lamp in one embodiment of this application.

[0026] Figure 9 This is a schematic diagram showing the light distribution curve of a traditional reflector luminaire in the direction of travel (C0 / C180) on the road.

[0027] Figure 10 The diagram shows the light distribution curve of a reflective luminaire in the road travel direction (C0 / C180) according to one embodiment of this application.

[0028] Figure 11 The diagram shown is a structural schematic of an electronic terminal according to an embodiment of this application. Detailed Implementation

[0029] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0030] In the embodiments of this application, terms such as "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. For example, "first XX" and "second XX" are merely used to distinguish different XXs and do not limit their order. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or execution order, and that "first" and "second" do not necessarily imply that they are different.

[0031] It should be noted that, in the embodiments of this application, the words "exemplary" or "for example" indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0032] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0033] like Figure 1 As shown, the first aspect of this application provides a design method for a reflector busbar, comprising:

[0034] S1: Based on the principle of first-order luminous flux and the preset reflective surface type, n illumination points {B1, B2, ..., B} are selected on the illuminance profile line L of the target surface. n}; wherein, the first equal luminous flux principle includes: for each line segment on the illuminance profile line L defined by adjacent illumination points, the luminous flux received by the corresponding target surface region is equal.

[0035] The target surface is a specific surface that needs to be illuminated, such as a road, desktop, or workbench. It serves as a reference plane for evaluating the lighting effect. To achieve uniform illumination on this target surface, its two-dimensional illuminance distribution needs to be effectively controlled. To simplify the design complexity, this invention transforms the design of the three-dimensional reflector into the design of its two-dimensional generatrix (the complete reflective surface can be constructed by rotating or stretching this generatrix). Similarly, a representative illuminance profile line L is selected on the target surface, and the design objective of the two-dimensional generatrix is ​​transformed into achieving a specific light energy distribution on this one-dimensional profile (by optimizing the light path on this one-dimensional profile and utilizing the inherent geometric symmetry or extensibility of the reflector for restoration, the shape of the reflector generatrix that ensures uniform illumination of the entire target surface can be accurately derived), thus further simplifying the problem. In this way, the entire reflector design process can be achieved efficiently.

[0036] Based on this, and according to the principle of first-order luminous flux and the preset reflective surface type, n illumination points are determined on the illuminance profile line L. This means that, according to the principle of uniform luminous flux distribution, the total luminous flux corresponding to L is divided into (n-1) equal parts, and then L is divided into (n-1) continuous line segments by determining n dividing points (i.e., illumination points). Furthermore, each line segment corresponds to a sub-region on the target surface, and each sub-region receives an equal amount of luminous flux. Therefore, the selection of illumination points is not done in isolation, but rather the division of L as a whole, with the goal of equalizing the global luminous flux.

[0037] For example, assuming n is 10, if the illuminance profile line L is divided into 9 segments, then all segments have 10 non-coincident endpoints, namely {B1, B2, ..., B...}. 10}. Among them, in line segments B1B2, B2B3, ..., B9B 10 The luminous flux of light (emitted from the light source and reflected by the reflector) received in the target area corresponding to each of these 9 line segments is equal.

[0038] In one embodiment of the first aspect of this application, the position and length of the illuminance profile line are set based on the relative position of the light source O, the spacing between the light sources, and the type of the reflecting surface.

[0039] It should be understood that, under actual lighting requirements, the position of the light source relative to the illuminance profile line (such as the vertical distance, horizontal offset, and optical axis tilt angle of the light source from the target surface), the spacing between light sources, and the type of reflecting surface (such as specular, diffuse, or a hybrid of specular and diffuse reflection) are all predetermined based on the specific lighting scenario and optical performance requirements. These parameters together constitute the boundary conditions and initial constraints of the design. Based on these determined inputs, the first step of this design method is to set the position and length of the illuminance profile line L accordingly.

[0040] Specifically, the relative position and spacing of the light sources determine the actual range and geometry of the area to be illuminated on the target surface, thus defining the start and end points of the illuminance profile and its path on the target surface. The type of reflective surface directly affects the breadth and gradient of light energy distribution, thereby determining the effective optical range that the illuminance profile needs to cover. This setting process ensures that all subsequent light energy distribution and reflector generatrix calculations based on the illuminance profile are closely aligned with the real physical scenario, giving the design a clear engineering focus and feasibility from the outset, ultimately guiding the design results to accurately meet specific lighting specifications.

[0041] In one embodiment of the first aspect of this application, the value of n should satisfy a convergence criterion; wherein, the convergence criterion includes: calculating and fitting an initial reflector busbar based on the value of n, and using 2n to replace n to calculate and fit a test reflector busbar; if the difference between the initial reflector busbar and the test reflector busbar is less than a preset range, then the value of n is deemed to satisfy the convergence criterion.

[0042] It should be understood that the core of this invention lies in approximating a theoretically continuous ideal generatrix through discrete reflection points. When the number of sampling points n is too small, the fitted generatrix may miss key optical features, leading to a certain deviation between the actual light distribution effect and the design target. By introducing a convergence test (such as doubling n to 2n for verification), it is possible to effectively evaluate whether the current value of n is dense enough so that the fitted curve no longer changes fundamentally with the increase of the number of points. If the difference between the two results is within the allowable error range, it proves that the current discretization accuracy is sufficient to represent a continuous solution, thereby ensuring the mathematical rigor and optical accuracy of the design results.

[0043] Blindly choosing an extremely large value for n, while ensuring accuracy, will drastically increase computational complexity and impact design efficiency. Therefore, a preferable approach is to start with a moderately sized n value and iteratively verify whether it meets the convergence criteria. If not, the n value is increased by setting an appropriate step size, and the convergence criteria are verified again. Once the convergence condition is met, the calculation is terminated. This method avoids unnecessary resource consumption, obtaining deterministic design results that meet engineering requirements at the optimal computational cost.

[0044] It should be understood that the convergence criterion proposed in this embodiment is only a preferred implementation method for verifying and determining the value of n, and not the only limitation on the method of choosing the value of n. Without departing from the core inventive concept of this invention, any value of n selected in a way that can ensure the qualified and effective design of the reflector busbar should fall within the protection scope of this invention.

[0045] In one embodiment of the first aspect of this application, the reflective surface type includes a mirror surface, a Lambertian surface, and a hybrid surface; wherein, the hybrid surface is a mixture of a mirror surface and a Lambertian surface; and the n illumination points {B1, B2, ..., B...} are selected on the illuminance profile line L according to the reflective surface type. n The method includes: Let the coordinates of the i-th irradiation point be (l i ,-h); where the i-th illumination point refers to the i-th illumination point on the illuminance profile line when the light source is sorted from near to far, based on the projection point O' of the light source on the illuminance profile line. s is the distance from the projection point of the light source on the illuminance profile line to the nearest endpoint B on the illuminance profile line. n The distance, L, is the length of the illuminance profile line; and, when the reflecting surface type is a mirror, k i =1; when the reflecting surface type is a Lambertian surface, k i =a1×i+a2, or Where a1, a2, b1, b2, and b3 are constants; when the reflective surface type is a hybrid surface, Where c1, c2, and c3 are constants.

[0046] The types of reflective surfaces include specular surfaces, Lambertian surfaces, and hybrid surfaces, corresponding to the aforementioned specular reflection, diffuse reflection, and a hybrid type combining specular and diffuse reflection, respectively. Among them, a specular surface is an ideally smooth surface whose reflection behavior strictly follows the laws of geometric optics, with a clearly defined direction of emitted light; a Lambertian surface is an ideal diffuse reflective surface, whose reflected light intensity varies with the cosine of the angle between the observation direction and the normal, exhibiting isotropic brightness characteristics; a hybrid surface lies between the two, possessing both directional reflection and diffuse scattering characteristics to simulate the optical behavior of actual engineering materials.

[0047] like Figure 6 As shown, the core of the method for selecting n illumination points on the illuminance profile line L based on the type of reflective surface lies in adjusting the distribution coefficient k. i This is to compensate for the spatial distribution differences in light energy caused by different reflective surfaces. When the luminous flux corresponding to each incident ray is equal, the light rays illuminating the target surface along the illuminance profile are also uniform.

[0048] like Figure 2 As shown, taking a low-headroom road as an example, when the reflecting surface is a mirror, k i When the value is constant at 1, the illumination points are uniformly distributed along L. This corresponds to the characteristics of clear and concentrated energy in specular reflection, and equal luminous flux in each region can be directly achieved by dividing the target surface into equal areas.

[0049] like Figure 3 As shown, taking a low-headroom road as an example, when the reflecting surface is a mixed surface, k i By employing a power function or similar method to gradually attenuate the light, the distribution density of the illumination point is determined to be between that of a specular surface and a Lambertian surface. This formula can flexibly adapt to different ratios of diffuse and specular reflection components. By adjusting the function parameters, the distribution gradient of light energy on the target surface can be precisely controlled, achieving effective fitting of complex optical characteristics to obtain a smooth transition and adjustable uniformity of illumination.

[0050] like Figure 4 As shown, taking a low-headroom road as an example, when the reflecting surface is a Lambertian surface, k i This is expressed as a function (linear or exponential form) that decreases as i increases. This results in a sparser distribution of illumination points near the center of the light spot and a denser distribution at the edges. This is intended to compensate for the edge intensity attenuation effect inherent in Lambertian reflection, that is, by reducing the target surface segmentation area corresponding to the edge region, the insufficient light energy received per unit area is balanced, thereby ensuring that the total luminous flux obtained by each segmented region is equal, ultimately forming a uniform and soft illumination spot.

[0051] Preferably, the theoretical solution of the spatial distribution of the illumination point is obtained by numerical integration and inverse solution of the light intensity distribution function, thereby analytically determining the initial approximate values ​​of the aforementioned constants (a1, a2, b1, b2, b3, c1, c2, and c3). Alternatively, preferably, parametric optimization is performed using optical simulation software, that is, the distribution formula containing undetermined constants is set as variables, the uniformity of illumination on the target surface is used as the optimization objective, and the constant values ​​are automatically adjusted through an iterative algorithm until the simulation results reach the optimum, thereby determining the aforementioned constant values.

[0052] S2: Based on the preset position of A1, determine the position of the incident light on the reflector corresponding to each illumination point.

[0053] Where A1 is the reflection point closest to the light source O.

[0054] The method for determining the position of the incident ray includes: determining the position of the incident ray based on the position of A1 and the relative position of the incident ray determined based on the second equal luminous flux principle. The location, and according to The position determines all other incident rays The positions, where {A1,A2,...,A n} represents the reflection point of the incident light ray on the generatrix of the reflector, and the line connecting each reflection point and its corresponding illumination point constitutes the outgoing light ray. The second equal luminous flux principle includes: dividing the luminous intensity distribution domain of the light source O defined by the preset initial beam angle θ into (n-1) basic angular domains with equal luminous flux, and generating an incident ray at the boundary of each basic angular domain to obtain n incident rays.

[0055] It should be understood that, unless otherwise specified, the "incident ray position" in this invention refers to the absolute position of the incident ray.

[0056] The position of reflection point A1 (i.e., the starting point closest to the light source on the reflector's generatrix) is set by comprehensively considering the balance between optical objectives and mechanical constraints. Specifically, it can be determined based on the overall size of the luminaire and the preset diameter of the reflector opening. Defining A1, the starting point on the reflector's generatrix, as the starting point for iterative calculations offers the advantage of numerical stability. Because the reflector's generatrix is ​​a continuous curve, starting from the known closest point A1, the next point A2 is solved based on the intersection of the tangent at that point and the next incident ray. Mathematically, this is a well-defined boundary value problem, ensuring that the iterative process steadily expands outwards, effectively avoiding problems such as curve intersections, divergence, or non-convergence that may occur when calculating from a distant point.

[0057] After the absolute position of A1 is determined, its corresponding incident ray The absolute position can also be determined, and when Once the absolute position of A1 is determined, the relative positions of the incident rays are also determined according to the second equal luminous flux principle. It should be understood that the second equal luminous flux principle divides the light beam from source O into several angular regions with equal luminous flux, and the boundary directions define the relative angular relationships between the incident rays. This constitutes a "ray skeleton" that is not yet oriented in space. When the absolute coordinates of A1 are set, it is essentially equivalent to setting the absolute coordinates of this ray skeleton... Once the lines are fixed, the orientation of the entire skeleton is locked, thus uniquely determining the absolute direction of all other incident rays.

[0058] like Figure 5 As shown, the second equal luminous flux principle divides the luminous intensity distribution domain of the light source O (the largest sector in the figure) defined by the preset initial beam angle θ into (n-1) basic angular domains with equal luminous flux, namely basic angular domain g1 (the sector in the figure where g1 is located), basic angular domain g2 (the sector in the figure where g2 is located), basic angular domain g3 (the sector in the figure where g3 is located), ..., basic angular domain g n-1 (marked as g in the figure) n-1 (The sector-shaped region where it is located); thus, n incident rays are obtained. Furthermore, the area of ​​the light intensity distribution domain divided by each basic angular domain is equal (it should be noted that...). Figure 5 In A1, A2, ..., A n For illustrative purposes only, not their exact locations, A1, A2, ..., A n The appearance of this is only intended to illustrate the incident light. The distribution of the data is shown in the diagram, but this illustrative label should not be construed as limiting the scope of protection of the technical solution in this application.

[0059] The core function of this division is to achieve equal distribution of light energy from the initial stage starting from the light source, ensuring that each incident ray pointing to the reflection point carries an equal amount of luminous flux. Furthermore, it lays a solid foundation for subsequent steps; that is, as long as the bus iteration calculation is accurate, these equal energy packets can be precisely projected onto the corresponding sub-regions on the target surface. In other words, this method decomposes the complex light distribution problem into two continuous, interconnected equal luminous flux mapping processes, thus guaranteeing the uniformity of the final illumination effect in principle.

[0060] S3: Based on the position of A1 and the incident ray The position is determined iteratively to obtain the positions of other reflection points.

[0061] The rules for the iterative calculation include: based on A j Position calculation A j The tangent vector on the generatrix of the reflector will be A j tangent vector and The intersection point is taken as A j+1 The position of j∈Z∩[1,n-1].

[0062] Given the position of A1 and the incident ray After determining the position of A, the positions of subsequent reflection points can be calculated sequentially. It should be understood that A... j+1 Falling on A j On the tangent vector, it can be ensured that the smooth reflector generatrix obtained by fitting is in every A jAll locations can strictly satisfy the requirement of reflecting light to their corresponding illumination point B. j Optical requirements.

[0063] In one embodiment of the first aspect of this application, the statement according to A j Position calculation A j The method for determining the tangent vector on the reflector generatrix includes: based on the law of reflection, according to A... j The position, combined with the position of the light source O and the B on the reflected light. j The position of A is calculated. j The normal vector on the generatrix of the reflector is used to calculate the tangent vector corresponding to that point.

[0064] S4: Based on all reflection points {A1,A2,...,A...} n The position and tangent vector of the reflector are used to perform curve fitting to obtain the reflector generatrix.

[0065] This step is the final stage of the reflector busbar design method. Its purpose is to transform a series of discrete, optically meaningful geometric data generated by the aforementioned iterative process into a continuous and smooth curve that can be used for actual processing.

[0066] like Figure 9 The diagram shows the light distribution curves of the final designed reflector busbar in the C0 / C180 direction. Because the light rays are generally shifted towards the C0 direction, the light rays in the C180 direction are significantly reduced. Therefore, when people are walking, the amount of light directly hitting their eyes is greatly reduced, thus alleviating uncomfortable glare. Especially on roads with low headroom, this reduces the degree of uncomfortable glare for drivers, thereby improving driving safety.

[0067] The fifth aspect of this application provides a reflective luminaire, comprising: a light source; a reflector, wherein the light source is disposed within the reflector; wherein the generatrix of the reflector is designed according to any of the preceding methods, and the axial width of the reflector matches the size of the light source.

[0068] It should be understood that the design method of the reflector busbar has been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0069] In one embodiment of the fifth aspect of this application, the luminaire includes a plurality of light source-reflector modules; wherein each light source-reflector module is connected in a parallel and / or end-to-end manner.

[0070] like Figure 7-8As shown, the lamp includes multiple light source-reflector modules, and each light source-reflector module is connected end to end; the end-to-end connection means that, except for the first light source-reflector module, the head of the next light source-reflector module is placed at the tail of the previous light source-reflector module, and each light source-reflector module is arranged in the same way.

[0071] A second aspect of this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in any of the preceding claims.

[0072] A third aspect of this application provides a computer program product comprising computer program code that, when executed on a computer, causes the computer to perform the method described in any of the preceding claims.

[0073] A fourth aspect of this application provides an electronic terminal, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the method described in any of the preceding claims. The electronic terminal includes at least one processor 101, a memory 102, at least one network interface 103, and a user interface 105. The various components in the electronic terminal are coupled together via a bus system 104. It is understood that the bus system 104 is used to enable communication between these components. In addition to a data bus, the bus system 104 also includes a power bus, a control bus, and a status signal bus.

[0074] The user interface 105 may include a monitor, keyboard, mouse, trackball, clicker, button, touchpad, or touch screen.

[0075] It is understood that memory 102 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM) or programmable read-only memory (PROM), used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM) and synchronous static random access memory (SSRAM). The memories described in the embodiments of this invention are intended to include, but are not limited to, these and any other suitable categories of memory.

[0076] In this embodiment of the invention, the memory 102 is used to store various types of data to support the operation of the electronic terminal 100. Examples of this data include: any executable program for operation on the electronic terminal 100, such as the operating system 1021 and application programs 1022; the operating system 1021 contains various system programs, such as the framework layer, core library layer, driver layer, etc., for implementing various basic services and handling hardware-based tasks. The application program 1022 may contain various applications, such as a media player, browser, etc., for implementing various application services. The methods provided in this embodiment of the invention may be included in the application program 1022.

[0077] The methods disclosed in the above embodiments of the present invention can be applied to processor 101, or implemented by processor 101. Processor 101 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 101 or by instructions in the form of software. The processor 101 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 101 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. General-purpose processor 101 may be a microprocessor or any conventional processor, etc. The steps of the accessory optimization method provided in the embodiments of the present invention can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in a memory. The processor reads the information in the memory and combines it with its hardware to complete the steps of the aforementioned method.

[0078] In an exemplary embodiment, the electronic terminal 100 may be used by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), or complex programmable logic devices (CPLDs) to execute the aforementioned method.

[0079] According to the method provided in the embodiments of this application, this application also provides a computer program product, which includes: computer program code, which, when run on a computer, causes the computer to perform the method of any embodiment in the embodiments of this application.

[0080] According to the method provided in the embodiments of this application, this application also provides a computer-readable storage medium storing program code, which, when run on a computer, causes the computer to perform the method of any embodiment in the embodiments of this application.

[0081] The terms “component,” “module,” “system,” etc., used in this specification are used to refer to computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. As illustrated, applications running on computing devices and computing devices can both be components. One or more components may reside in a process and / or an execution thread, and components may be located on a single computer and / or distributed among two or more computers. Furthermore, these components can be executed from various computer-readable media on which various data structures are stored. Components can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system, and / or a network, such as the Internet interacting with other systems via signals).

[0082] Those skilled in the art will recognize that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0083] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0084] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0085] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0086] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0087] In the above embodiments, the functions of each functional unit can be implemented entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. A computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. Computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs, DVDs), or semiconductor media (e.g., solid-state disks, SSDs, etc.).

[0088] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0089] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0090] In summary, this application effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0091] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A design method for a reflector busbar, characterized in that, include: Based on the principle of first-order luminous flux and the preset reflective surface type, n illumination points {B1, B2, ..., B} are selected on the illuminance profile line L of the target surface. n }; where the first equal luminous flux principle includes: for each line segment on the illuminance profile line L defined by adjacent illumination points, the luminous flux received by the corresponding target surface region is equal; Based on the preset position A1, determine the position of the incident light on the reflector corresponding to each illumination point; where A1 is the reflection point closest to the light source O; The method for determining the position of the incident ray includes: determining the position of the incident ray based on the position of A1 and the relative position of the incident ray determined based on the second equal luminous flux principle. The location, and according to The position determines all other incident rays The position; where {A1,A2,...,A n } represents the reflection point of the incident light ray on the generatrix of the reflector, and the line connecting each reflection point and its corresponding illumination point constitutes the outgoing light ray. The second equal luminous flux principle includes: dividing the luminous intensity distribution domain of the light source O defined by the preset initial beam angle θ into (n-1) basic angular domains with equal luminous flux, and generating an incident ray at the boundary of each basic angular domain to obtain n incident rays. Based on the position of A1 and the incident ray The positions of other reflection points are obtained by iterative calculation based on the location of A; wherein, the rules for the iterative calculation include: according to A j Position calculation A j The tangent vector on the generatrix of the reflector will be A j tangent vector and The intersection point is taken as A j+1 The position of j∈Z∩[1,n-1]; Based on all reflection points {A1,A2,...,A... n The position and tangent vector of the reflector are used to perform curve fitting to obtain the reflector generatrix.

2. The design method of a reflector busbar according to claim 1, characterized in that, The position and length of the illuminance profile line are set based on the relative position of the light source O, the spacing between the light sources, and the type of the reflecting surface.

3. The design method of a reflector busbar according to claim 1, characterized in that, The reflective surface types include mirror surfaces, Lambertian surfaces, and hybrid surfaces; wherein, the hybrid surface is a mixture of mirror and Lambertian surfaces; and n illumination points {B1, B2, ..., B} are selected on the illuminance profile line L according to the reflective surface type. n The methods include: Let the coordinates of the i-th irradiation point be (l i ,-h); where the i-th illumination point refers to the i-th illumination point on the illuminance profile line when the light source is sorted from near to far, based on the projection point O' of the light source on the illuminance profile line. s is the distance from the projection point of the light source on the illuminance profile line to the nearest endpoint B on the illuminance profile line. n The distance, L, is the length of the illuminance profile line; and... When the reflecting surface type is a mirror, k i =1; When the reflecting surface type is a Lambertian surface, k i =a1×i+a2, or Where a1, a2, b1, b2, and b3 are constants; When the reflective surface type is a hybrid surface Where c1, c2, and c3 are constants.

4. The design method of a reflector busbar according to claim 1, characterized in that, According to A j Position calculation A j The method for determining the tangent vector on the reflector's generatrix includes: based on the law of reflection, according to A... j The position, combined with the position of the light source O and the B on the reflected light. j The position of A is calculated. j The normal vector on the generatrix of the reflector is used to calculate the tangent vector corresponding to that point.

5. The design method of a reflector busbar according to claim 1, characterized in that, The value of n should meet the convergence criterion; wherein, the convergence criterion includes: calculating and fitting an initial reflector busbar based on the value of n, and using 2n to replace n to calculate and fit a test reflector busbar; if the difference between the initial reflector busbar and the test reflector busbar is less than a preset range, then the value of n is considered to meet the convergence criterion.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1-5.

7. A computer program product, characterized in that, The computer program product includes computer program code that, when run on a computer, causes the computer to implement the method as described in any one of claims 1-5.

8. An electronic terminal, comprising a memory, a processor, and a computer program stored in the memory, characterized in that, The processor executes the computer program to implement the method according to any one of claims 1-5.

9. A reflective luminaire, characterized in that, include: light source; A reflector, wherein the light source is disposed within the reflector; wherein the generatrix of the reflector is... Designed according to any one of claims 1-5, the axial width of the reflector matches the size of the light source.

10. A reflective luminaire according to claim 9, characterized in that, The luminaire includes multiple light source-reflector modules; wherein each light source-reflector module is connected in parallel and / or end-to-end.

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