Optical lens structure, eave lighting module and method

Abstract

The present disclosure relates to the technical field of lighting, and provides an optical lens structure, a roof lighting module and a method. The optical lens structure comprises a lens body, the lens body is formed with an entrance light concave cavity close to a light source and an exit light part protruding from the side opposite to the entrance light concave cavity. A center line passing through the entrance light concave cavity and the exit light part is used as a reference axis, a direction perpendicular to the reference axis is used as a first direction, and a plurality of entrance light surfaces are formed in the entrance light concave cavity along the first direction. At least one of the entrance light surfaces is in the form of an inclined circular arc relative to the reference axis, and at least two of the entrance light surfaces extend along the reference axis direction. Each of the entrance light surfaces extends towards the light source to form a plurality of columnar guide bodies arranged in an array, and the diameters and distribution densities of the guide bodies corresponding to adjacent entrance light surfaces are different. The optical lens structure can differentially adjust the light rays in different entrance light regions, reduce the difference in exit light energy between the regions, and improve the uniformity and consistency of the exit light spot.

Description

Technical Field

[0001] This disclosure relates to the field of lighting technology, and more specifically, to an optical lens structure, a roof lighting module, and a method. Background Technology

[0002] An optical lens structure is an optical element positioned on the light-emitting side of a light source to collect, refract, and redistribute the light emitted by the source. It typically includes a light-incident section for receiving light and a light-emitting section for outputting light. In lighting devices, indicating devices, and optical display devices, optical lens structures can alter the propagation direction and energy distribution of light, allowing the light to form a light spot that meets usage requirements. To improve light utilization and adjust light propagation directions, some optical lenses have a light-incident cavity on the side closest to the light source. This cavity is divided into multiple light-incident regions, and an array of light-guiding microstructures is placed within these regions to guide the light into the lens's interior, where it is then projected outwards through the light-emitting section.

[0003] Light emitted from a light source has different exit angles, and the relative positions of each light-receiving region within the incident cavity to the light source differ. Consequently, the incident angle, quantity, and propagation path of the light received by each light-receiving region vary. Existing optical lenses typically use the same or similar structural parameters to adjust the light in multiple incident regions. This can easily lead to excessive convergence of light in some regions and insufficient adjustment of light in others. These differences are further reflected in the exiting region after the light propagates through the lens, causing localized brightness concentration, clear boundaries between light and dark areas, or striped brightness variations in the formed light spot. This affects the uniformity of the light spot and the consistency of the light output effect.

[0004] Therefore, there is a need to provide an optical lens structure, a roof lighting module, and a method to solve the problem that existing optical lenses do not adjust the light unevenly in different incident light areas, resulting in poor uniformity of the emitted light spot. Summary of the Invention

[0005] The main objective of this disclosure is to provide an optical lens structure, a roof lighting module, and a method, which aims to solve the problem that existing optical lenses do not adjust the light unevenly in different incident light areas, resulting in poor uniformity of the emitted light spot.

[0006] The present invention adopts the following technical solution: An optical lens structure, a roof lighting module and a method are disclosed, comprising a lens body having an entrance cavity near a light source and an exit portion protruding from the side opposite to the entrance cavity, with the center line passing through the entrance cavity and the exit portion as a reference axis, and one of the directions perpendicular to the reference axis as a first direction. The light-incident cavity has a plurality of light-incident surfaces formed along the first direction, wherein at least one light-incident surface is arranged in an inclined arc shape relative to the reference axis, and at least two light-incident surfaces extend along the reference axis direction. Several light-incident surfaces are respectively extended with several columnar guides facing the light source. The guides are arranged in an array, wherein the diameter and distribution density of the guides corresponding to adjacent light-incident surfaces are different.

[0007] Furthermore, the plurality of light-incident surfaces include a first light-incident surface, a second light-incident surface, and a third light-incident surface. The first light-incident surface is distributed on the bottom wall of the light-incident cavity, and the second light-incident surface and the third light-incident surface are respectively located on opposite sides of the first light-incident surface along the first direction. The light-emitting part has an outgoing light-emitting surface, and the projection of the outgoing light-emitting surface in the reference axis direction covers the first light-incident surface, the second light-incident surface, and the third light-incident surface.

[0008] Furthermore, the first light-incident surface is arranged in an arc shape, and the radius of the point on the first light-incident surface that passes through the reference axis is set at a preset acute angle with the reference axis. The second light-incident surface and the third light-incident surface both extend along the reference axis direction, and the second light-incident surface and the third light-incident surface are parallel to each other.

[0009] Furthermore, the area of ​​the second light-incident surface is larger than the area of ​​the third light-incident surface, the lower ends of the second and third light-incident surfaces extend to the opening edge of the light-incident cavity, and the upper ends of the second and third light-incident surfaces are respectively connected to the first light-incident surface.

[0010] Furthermore, several interconnected guiding cavities are formed between several of the guiding bodies, and the several guiding bodies are respectively configured as a first emitter, a second emitter, and a third emitter corresponding to the first light-incident surface, the second light-incident surface, and the third light-incident surface, with the diameter and distribution density of the first emitter, the second emitter, and the third emitter decreasing sequentially.

[0011] Furthermore, the angle between the axis of the second projectile and the first direction is 8-15°, the angle between the axis of the third projectile and the first direction is 5-8°, and the axis of the first projectile is parallel to the reference axis.

[0012] Furthermore, taking the direction that is perpendicular to both the reference axis and the first direction as the second direction, the outgoing light surface forms a first arc-shaped profile in a cross-section that passes through the reference axis and is parallel to the first direction, and the outgoing light surface forms a second arc-shaped profile in a cross-section that passes through the reference axis and is parallel to the second direction. The radius of curvature of the first arc-shaped profile is smaller than the radius of curvature of the second arc-shaped profile.

[0013] Furthermore, the lens body also includes a base, and the light-emitting part protrudes from one end face of the base. The light-emitting part is inclined along the side near the second light-incident surface toward the third light-incident surface.

[0014] A method for forming an optical lens structure, characterized in that it is applied to the optical lens structure as described in any of the above claims, wherein the lens body and the guide body are integrally formed.

[0015] An eaves lighting module, characterized in that it includes an optical lens structure as described in any of the preceding claims, and the eaves lighting module further includes a housing, a lamp panel, a light source, and wires; The outer casing is provided with a receiving cavity and a light-emitting window. The lamp panel is disposed in the receiving cavity, and the light source is disposed on the lamp panel and located on the opening side of the light-entry concave cavity. The lens is positioned above the lamp panel, with its light-emitting surface facing the light-emitting window. The wire passes through the outer casing and is electrically connected to the lamp panel; The housing has a wall-mounted side and an outer side, with the first direction pointing from the outer side to the wall-mounted side.

[0016] Beneficial effects: In this invention, a lens body receives light emitted from a light source via an incident cavity and projects it outward through a protruding light-emitting section. Multiple incident surfaces are distributed along a first direction within the incident cavity. The inclined, arc-shaped incident surfaces continuously refract and adjust light rays that deviate from the reference axis and exhibit significant changes in incident angle. Incident surfaces extending along the reference axis guide light rays from corresponding regions into the lens body, allowing light rays at different positions and angles to be adjusted to their respective propagation states. Each incident surface is oriented towards the light source with an array of columnar guides. The diameter and distribution density of the guides corresponding to adjacent incident surfaces differ, resulting in variations in the reception and refraction of light in each incident region. This allows for adjustment of light transmission based on the incident light state in different regions. Therefore, it reduces the difference in emitted light energy between incident regions, suppresses local brightness concentration, light-dark boundaries, and banding phenomena, and improves the uniformity and consistency of the emitted light spot. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural schematic diagram of an optical lens structure according to the present invention; Figure 2 This is a schematic diagram of the overall structure of an optical lens structure according to the present invention; Figure 3 This is a schematic diagram of the light-entry concave cavity structure of an optical lens structure according to the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of an optical lens structure according to the present invention; Figure 5This is a schematic diagram of the structure of the first projectile of the present invention; Figure 6 This is a schematic diagram of the structure of the second projectile of the present invention; Figure 7 This is a schematic diagram of the structure of the third projectile of the present invention; Figure 8 This is a schematic diagram of the overall structure of a roof lighting module according to the present invention; Figure 9 This is an exploded structural diagram of a roof lighting module according to the present invention; in: 1. Lens body; 11. Entrance cavity; 12. Exiting section; 121. Exiting surface; 13. Entrance surface; 131. First entrance surface; 132. Second entrance surface; 133. Third entrance surface; 14. Guide body; 141. First emitter; 142. Second emitter; 143. Third emitter; 15. Guide cavity; 16. Base; 20. Outer shell; 21. Receiving cavity; 22. Exiting window; 30. Lamp panel; 40. Light source; 50. Wire; The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] Reference Figures 1 to 7 The present invention proposes an optical lens structure, including a lens body 1, wherein the lens body 1 forms an entrance cavity 11 near the light source 40 and an exit portion 12 protruding from the side opposite to the entrance cavity 11, with the center line passing through the entrance cavity 11 and the exit portion 12 as the reference axis, and one of the directions perpendicular to the reference axis as the first direction. The light-incident cavity 11 has a plurality of light-incident surfaces 13 formed along the first direction, wherein at least one light-incident surface 13 is arranged in an inclined arc shape relative to the reference axis, and at least two light-incident surfaces 13 extend along the reference axis direction. Each of the light-incident surfaces 13 extends a plurality of columnar guides 14 toward the light source 40. The plurality of guides 14 are arranged in an array, wherein the diameter and distribution density of the guides 14 corresponding to adjacent light-incident surfaces 13 are different.

[0023] In the above embodiment, the lens body 1 can be integrally formed from transparent resin or optical glass, with the side near the light source 40 recessed inward to form a light-entry cavity 11, and the side away from the light source 40 forming an outwardly protruding light-exiting part 12. The light source 40 is disposed on the opening side of the light-entry cavity 11 and located near the reference axis, so that the emitted light enters the lens body 1 through the inner wall of the cavity.

[0024] The reference axis is an imaginary axis passing through the center of the light-entry cavity 11 and the center of the light-exiting section 12. The first direction lies in a plane perpendicular to the reference axis and is used to indicate the arrangement direction of each light-entry surface 13. The inner wall of the light-entry cavity 11 is divided into multiple adjacent light-receiving areas along the first direction, and each light-receiving area constitutes a light-entry surface 13. The inclined arc-shaped light-entry surface 13 is continuously arc-shaped in the cross-section jointly determined by the reference axis and the first direction, and its arc-shaped profile is oblique to the reference axis. The light-entry surfaces 13 extending along the reference axis can be arranged in adjacent positions, with the main extension direction parallel or approximately parallel to the reference axis, and can form a plane or a gently curved surface. Adjacent light-entry surfaces 13 can be directly connected or connected through a smooth transition surface to reduce the unexpected disturbance to light propagation caused by surface abrupt changes.

[0025] Each light-incident surface 13 has multiple columnar guides 14 protruding towards the light source 40. The columnar guides 14 can be integrally formed with the lens body 1, and their cross-section is circular or hexagonal, distributed in a regular row and column or staggered manner. The columnar guides 14 on adjacent light-incident surfaces 13 have different diameters and the number distributed per unit area. The distribution density can be determined by the center distance, row spacing, or column spacing of adjacent guides 14. Since light rays at different lateral positions have different incident angles and luminous fluxes, the surface normal of the inclined arc-shaped light-incident surface 13 will continuously change along the arc contour, so that light rays incident at different positions will obtain continuously changing refraction directions, thereby dispersing light rays that deviate from the reference axis and have large angle changes into the lens body 1. The light-incident surface 13 extending along the reference axis has a relatively stable surface orientation, which allows light rays in the corresponding area to enter the lens body 1 with a relatively gentle deflection. The change in the diameter of the columnar guide 14 alters the effective range of light reception for a single guide 14, while the change in distribution density changes the number of structures involved in refraction and guidance within a unit area. Therefore, different degrees of light modulation can be achieved in each incident light area. The processed light forms a more uniform energy distribution inside the lens body 1 and is projected outward from the light exiting part 12, thereby reducing local brightness concentration, light-dark boundaries, and strip-shaped brightness differences, resulting in a more uniform brightness transition of the emitted light spot.

[0026] In one embodiment, the plurality of light-incident surfaces 13 include a first light-incident surface 131, a second light-incident surface 132 and a third light-incident surface 133. The first light-incident surface 131 is distributed on the bottom wall of the light-incident cavity 11, and the second light-incident surface 132 and the third light-incident surface 133 are respectively located on opposite sides of the first light-incident surface 131 along a first direction. The light-emitting part 12 has an outgoing light-emitting surface 121, and the projection of the outgoing light-emitting surface 121 in the reference axis direction covers the first light-incident surface 131, the second light-incident surface 132 and the third light-incident surface 133.

[0027] In the above embodiment, the inner wall of the light-receiving cavity 11 can be divided into a first light-receiving surface 131 located at the bottom of the cavity, and a second light-receiving surface 132 and a third light-receiving surface 133 respectively disposed on its lateral sides. The three together form a light-receiving space open towards the light source 40. The cavity bottom region mainly receives light propagating near the reference axis, while the two side regions respectively receive off-axis light diverging in different lateral directions, so that light rays with different propagation directions fall into the corresponding light-receiving areas before entering the lens body 1. The columnar guides 14 on each light-receiving surface 13 refract and guide the light according to their respective areas, avoiding excessive convergence of axial light and large-angle off-axis light passing through the same surface.

[0028] The projection of the outgoing light surface 121 onto the reference axis covers the three incident light surfaces 13. That is, when viewed along the reference axis, each light-receiving area is within the coverage of the outgoing light surface 121, so that the light rays adjusted by different incident light surfaces 13 have the spatial conditions to reach the outgoing light surface 121 and be refracted again.

[0029] The outgoing light surface 121 can form a continuous curved surface, the lateral dimension of which matches the light-receiving range of the incident light cavity 11, so that light from the bottom and sides of the cavity is projected outward within the same outgoing light range. The outgoing light beams from different regions can thus be continuously connected in the first direction, reducing the possibility that the boundary of the incident light region is directly mapped as the brightness boundary, and making the energy distribution of the light spot more gradual.

[0030] In one example, the first light-incident surface 131 is arranged in an arc shape, and the radius of the point through which the first light-incident surface 131 passes along the reference axis is arranged at a preset acute angle with the reference axis. The second light-incident surface 132 and the third light-incident surface 133 both extend along the reference axis direction, and the second light-incident surface 132 and the third light-incident surface 133 are parallel to each other.

[0031] In the above embodiment, the first light-incident surface 131 forms a continuous arc within a cross-section jointly determined by the reference axis and the first direction, with its center of curvature offset relative to the reference axis. The radius line corresponding to the intersection of the reference axis and the light-incident surface 131 forms a preset acute angle with the reference axis, giving the arc surface an overall posture of deflection to one side, rather than being symmetrically set around the reference axis. The preset acute angle can be determined by combining the emission angle of the light source 40, the refractive index of the lens material, and the predetermined light emission direction.

[0032] Because the direction of the normal to each position on the curved surface changes continuously with the curvature, light falling on different parts will be deflected to different degrees; the offset of the center of curvature also gives the deflection a certain directional tendency, so the light with a large angular span in the cavity bottom area can be continuously adjusted to reduce the sudden concentration of light in local positions.

[0033] The second and third light-incident surfaces 132 and 133 can be configured as planes or near-planes extending along the reference axis, and kept parallel to each other, so that the extension posture of the two side surfaces is relatively stable. After the light rays diverging to both sides reach the corresponding surfaces, they can enter the lens body 1 through a relatively gentle deflection process, avoiding obvious fluctuations in the side light rays due to drastic changes in the local direction of the surface. The arc-shaped cavity bottom and the parallel light-incident surfaces 13 on both sides cooperate with each other, and combined with the differentiated setting of the columnar guides 14 in each region, the abrupt changes in propagation direction and light flux between adjacent regions can be reduced.

[0034] In one example, the area of ​​the second light-incident surface 132 is larger than the area of ​​the third light-incident surface 133. The lower ends of the second light-incident surface 132 and the third light-incident surface 133 extend to the opening edge of the light-incident cavity 11, and the upper ends of the second light-incident surface 132 and the third light-incident surface 133 are respectively connected to the first light-incident surface 131.

[0035] In the above embodiment, the light-receiving area of ​​the second light-receiving surface 132 is larger than that of the third light-receiving surface 133. Both light-receiving surfaces 13 extend from the opening edge of the light-receiving cavity 11 into the cavity and connect with the first light-receiving surface 131 near the bottom of the cavity, thereby forming a light-receiving inner wall extending from the cavity opening to the cavity bottom. The second light-receiving surface 132 can obtain a larger surface area by increasing the extension length along the reference axis, increasing the lateral width, or simultaneously adjusting the above dimensions. The third light-receiving surface 133 has a relatively smaller light-receiving range. The non-uniform area arrangement can form a laterally asymmetrical light-receiving profile together with the inclined arc-shaped first light-receiving surface 131, so that the side with a larger light-receiving area covers a wider light divergence area, and the side with a smaller light-receiving area corresponds to a narrower incident area, thereby adapting the light-receiving range on both sides to the divergence state of the light source 40 in different directions.

[0036] The lower ends of the two light-incident surfaces 13 extend to the edge of the cavity opening, ensuring that laterally divergent light rays can promptly contact the corresponding surfaces after entering the cavity, reducing the likelihood of light rays bypassing the effective light-incident area. Their upper ends connect with the first light-incident surface 131, eliminating any significant light-receiving gaps between the cavity bottom and side regions. The connection points can either directly intersect or form a small-curvature transition section, causing a gradual change in the surface orientation of adjacent regions. This allows different lateral regions to distribute light according to their actual light-receiving range, reducing the difference in light energy output between the two sides.

[0037] In one example, a plurality of interconnected guiding cavities 15 are formed between a plurality of the guiding bodies 14. The plurality of guiding bodies 14 are respectively configured as a first emitter 141, a second emitter 142, and a third emitter 143 corresponding to the first light-incident surface 131, the second light-incident surface 132, and the third light-incident surface 133. The diameter and distribution density of the first emitter 141, the second emitter 142, and the third emitter 143 decrease sequentially.

[0038] In the above embodiment, gaps are maintained between adjacent columnar guides 14, and each gap is interconnected along the row and column directions of the array to form a plurality of guide cavities 15 that are open toward the light source 40. The guide cavity 15 is a light-incident space continuously distributed around the adjacent columnar guides 14, through which light from different directions can reach the outer peripheral surface, end face and corresponding light-incident surface 13 of the column.

[0039] The columnar guide bodies 14 located on the first light-incident surface 131, the second light-incident surface 132, and the third light-incident surface 133 respectively constitute the first emitter 141, the second emitter 142, and the third emitter 143. The diameter and the number of emitters per unit area decrease sequentially. A larger diameter emitter has a larger single-unit light-receiving range. When the distribution density is high, the number of columns per unit area that can contact the light increases accordingly, allowing more light to enter the lens body 1 through the column interface. As the diameter and density decrease step by step, the proportion of columns in each region, the opening ratio of the guide cavity 15, and the light splitting scale change accordingly, thus forming different light-receiving coverage states. In specific arrangements, areas with more concentrated light or larger changes in the incident angle can correspond to larger and denser emitters, while areas with relatively dispersed light can correspond to smaller and sparser emitters. The interconnected guide cavities 15 can also maintain the continuity of the incident space at the array partitions, allowing the adjustment degree of each region to transition step by step, reducing local brightness concentration and strip-shaped brightness differences.

[0040] In one example, the axis of the second projectile 142 makes an angle of 8-15° with the first direction, the axis of the third projectile 143 makes an angle of 5-8° with the first direction, and the axis of the first projectile 141 is parallel to the reference axis.

[0041] In the above embodiment, the first emitter 141 is disposed in the bottom light-receiving area of ​​the light-receiving cavity 11, and its axis is parallel to the reference axis, so that the light propagating near the reference axis can enter the lens body 1 near the axial direction of the column, thereby reducing the excessive lateral deflection of this part of the light during the incident stage.

[0042] The second projectile 142 and the third projectile 143 are located on either side of the first projectile 141, and their axes can lie in a plane defined by a reference axis and a first direction. The included angle is the acute angle between the axis of each projectile and the first direction. The second projectile 142 is tilted at 8° to 15° relative to the first direction, and the third projectile 143 is tilted at 5° to 8° relative to the first direction. The corresponding axis orientation can be selected according to the propagation state of the light on both sides. In a preferred embodiment, the actual included angle of the second projectile 142 is greater than the actual included angle of the third projectile 143.

[0043] After the axis of the cylinder is tilted, the orientation of its end face and circumferential surface relative to the incident light changes accordingly, and the incident angle of the light entering the cylinder and the propagation direction after entering the lens body 1 also change accordingly. The axis of the second emitter 142 has a large reference axis direction component, and the extension posture of the third emitter 143 is closer to the first direction. As a result, the light on both sides can be guided to different degrees, and form a continuous transition with the axial light guided by the first emitter 141. The above-mentioned angle range can also take into account the spacing between adjacent emitters and the communication state of the guide cavity 15, reduce mutual occlusion caused by excessive tilting of the cylinder, and allow the light in each incident area to enter the lens body 1 more stably, thereby mitigating the brightness abrupt change in the exit area.

[0044] In one embodiment, with the direction that is perpendicular to both the reference axis and the first direction as the second direction, the outgoing light surface 121 forms a first arcuate profile in a cross-section passing through the reference axis and parallel to the first direction, and the outgoing light surface 121 forms a second arcuate profile in a cross-section passing through the reference axis and parallel to the second direction, wherein the radius of curvature of the first arcuate profile is smaller than the radius of curvature of the second arcuate profile.

[0045] In the above embodiments, the second direction is perpendicular to both the reference axis and the first direction, and the first direction and the second direction together form a transverse plane perpendicular to the reference axis.

[0046] The outgoing light surface 121 can be formed into an elliptical surface, a compound arc surface, or other continuous convex surfaces. It exhibits a first arcuate profile in a cross-section passing through the reference axis and parallel to the first direction, and a second arcuate profile in a cross-section passing through the reference axis and parallel to the second direction. The radius of curvature of the first arcuate profile is smaller than that of the second arcuate profile, indicating that the outgoing light surface 121 has a greater degree of curvature along the first direction, while the surface change along the second direction is relatively gentle. This difference in surface curvature causes the normal direction of the outgoing light surface 121 to change at different rates in the two transverse directions. After light travels from inside the lens body 1 to the outgoing light surface 121, the refraction adjustment along the first direction is greater, while the propagation direction along the second direction remains relatively stable.

[0047] Each light-incident surface 13 and its corresponding guide 14 are arranged in sections along the first direction. The differences in light intensity formed by different light-incident areas are also mainly distributed along this direction. A smaller radius of curvature allows the emitted light from adjacent areas to further expand and connect with each other along the first direction. The second direction uses a larger radius of curvature, which can reduce excessive deflection of light in this direction, coordinate the diffusion of the light spot in the two lateral directions, and reduce the possibility of the boundary between the light-incident areas forming a strip-shaped brightness difference on the light-emitting side.

[0048] In one embodiment, the lens body 1 further includes a base 16, and the light-emitting portion 12 protrudes from one end face of the base 16. The light-emitting portion 12 is inclined along the side near the second light-incident surface 132 toward the third light-incident surface 133.

[0049] In the above embodiment, the lens body 1 also forms a base 16 for supporting the light-emitting part 12. The base 16 can be plate-shaped, block-shaped, or a seat with a mounting frame. One end face of the base 16 serves as the forming basis for the light-emitting part 12, and the light-entry cavity 11 can be formed by recessing inward from the opposite end face of the base 16. The light-emitting part 12 protrudes outward from the end face of the base 16 and is inclined as a whole from the side near the second light-entry surface 132 toward the side near the third light-entry surface 133. The inclination can be manifested as the center of the protrusion of the light-emitting part 12 being offset relative to the reference axis on the side of the third light-entry surface 133, or it can be manifested as the height, tangential direction, or normal direction of the light-emitting surface 121 changing continuously in the first direction, as long as the main light-emitting posture of the light-emitting part 12 is offset toward the side where the third light-entry surface 133 is located.

[0050] After light rays from different incident surfaces 13 enter the lens body 1, their propagation direction, propagation distance, and incident position at the exiting light surface 121 are not entirely the same. With the light-emitting section 12 laterally tilted, the exiting light surfaces 121 near the two sides have different surface orientations and optical paths, causing light rays from the second incident surface 132 and the third incident surface 133 to be refracted and adjusted to different degrees upon exiting, and to overlap within a predetermined light-emitting area. This tilted shape can also be matched with the asymmetrical contour of the incident surface 13 and the distribution of the guide body 14 within the incident cavity 11, mitigating the energy shift caused by direct light emission from both sides. The end face area reserved by the base 16 around the light-emitting section 12 can be used for positioning, installation, or connection to the lamp housing, ensuring that the lens body 1 maintains a stable relative position and light-emitting direction in the assembled state.

[0051] A method for forming an optical lens structure, characterized in that it is applied to the optical lens structure as described in any of the above claims, wherein the lens body 1 and the guide body 14 are integrally formed.

[0052] In this embodiment, a molding mold can be fabricated according to the predetermined shape of the lens body 1, the light-entry cavity 11, the light-exiting part 12, and each columnar guide body 14. Cavities corresponding to each light-entry surface 13, light-exiting surface 121, and guide body 14 are formed within the mold. During molding, transparent resin is injected into the cavity, and after pressure holding, cooling, and demolding, the light-entry cavity 11, the light-exiting part 12, and the columnar guide bodies 14 distributed on different light-entry surfaces 13 form a continuous integral structure. When using optical glass, the material can also be filled into the corresponding cavity by hot pressing. Since the columnar guide bodies 14 are formed directly outward from the light-entry surface 13, their axial position, diameter, spacing, and relative orientation to the light-entry surface 13 are all defined by the same mold, which can reduce positional deviations, tilting deviations, and localized connection layers caused by reconnecting parts after separate processing. The pre-defined size and density differences between the guide bodies 14 in each region can be preserved more accurately, so that the zonal adjustment of light when passing through different light-incident areas remains stable, avoiding abnormal convergence or dispersion of local light due to microstructure misalignment, which helps to maintain the consistency of the brightness distribution of the emitted light spot.

[0053] Reference Figures 8 to 9 An eaves lighting module, characterized in that it includes an optical lens structure as described in any of the preceding claims, and the eaves lighting module further includes a housing 20, a lamp panel 30, a light source 40, and a wire 50; The outer casing 20 is provided with a receiving cavity 21 and a light-emitting window 22. The lamp plate 30 is disposed in the receiving cavity 21, and the light source 40 is disposed on the lamp plate 30 and located on the opening side of the light-entry concave cavity 11. The lens body 1 is disposed above the lamp panel 30, and the light-emitting surface 121 faces the light-emitting window 22; The wire 50 passes through the outer casing 20 and is electrically connected to the lamp panel 30; The housing 20 has a wall-mounted side and an outer side, with the first direction pointing from the outer side to the wall-mounted side.

[0054] In the above embodiment, the housing 20 has an internal cavity 21 for accommodating the lamp plate 30 and the lens body 1. A light-emitting window 22, opposite the light-emitting surface 121, is opened on the side of the housing 20 facing the illumination area. The light source 40 is fixed to the lamp plate 30 and located on the opening side of the light-incident cavity 11. Its light-emitting center can be aligned with the reference axis of the lens body 1, allowing the axial and off-axis light emitted by the light source 40 to enter the bottom and side light-receiving areas of the cavity, respectively. The lens body 1 is mounted above the lamp plate 30, with the light-emitting surface 121 facing the light-emitting window 22. Light entering from each light-incident surface 13 propagates through the lens body 1 and can be projected through the light-emitting window 22 onto the area below the eaves or adjacent walls. A wire 50 passes through the housing 20 and connects to the lamp plate 30 to supply power to the light source 40. A sealing structure can be provided at the wire's insertion point to maintain the installation state of the components within the cavity 21. The wall-mounted side of the housing 20 is used to be close to or connected to the building wall. The first direction extends from the outside to the wall-mounted side, thereby aligning the arrangement direction of each light-incident surface 13 inside the lens body 1 with the actual installation position. The light adjustment differences formed by different light-incident areas can be applied to different illumination ranges on the wall-mounted side and the outside, so that the light emitted from both sides is continuously connected in the target area, reducing the possibility of local bright spots, dark bands and sudden changes in brightness near the wall or the outer edge of the eaves.

[0055] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An optical lens structure, characterized in that, Includes a lens body (1), which has an entrance cavity (11) near the light source (40) and an exit portion (12) protruding from the side opposite to the entrance cavity (11), with the center line passing through the entrance cavity (11) and the exit portion (12) as the reference axis, and one of the directions perpendicular to the reference axis as the first direction; The light-incident cavity (11) has a plurality of light-incident surfaces (13) formed in the first direction, wherein at least one light-incident surface (13) is arranged in an inclined arc shape relative to the reference axis, and at least two light-incident surfaces (13) extend along the reference axis direction. Several light-incident surfaces (13) extend with several columnar guides (14) facing the light source (40), and the guides (14) are arranged in an array. The diameter and distribution density of the guides (14) corresponding to adjacent light-incident surfaces (13) are different.

2. The optical lens structure according to claim 1, characterized in that, The plurality of light-incident surfaces (13) include a first light-incident surface (131), a second light-incident surface (132) and a third light-incident surface (133). The first light-incident surface (131) is distributed on the bottom wall of the light-incident cavity (11), and the second light-incident surface (132) and the third light-incident surface (133) are located on opposite sides of the first light-incident surface (131) along a first direction. The light-emitting part (12) has an outgoing light surface (121), and the projection of the outgoing light surface (121) in the reference axis direction covers the first light-incident surface (131), the second light-incident surface (132) and the third light-incident surface (133).

3. The optical lens structure according to claim 2, characterized in that, The first light-incident surface (131) is arranged in an arc shape. The radius of the first light-incident surface (131) extending from the point of the first light-incident surface (131) along the reference axis is set at a preset acute angle with the reference axis. The second light-incident surface (132) and the third light-incident surface (133) both extend along the reference axis direction, and the second light-incident surface (132) and the third light-incident surface (133) are parallel to each other.

4. The optical lens structure according to claim 2, characterized in that, The area of ​​the second light-incident surface (132) is larger than the area of ​​the third light-incident surface (133). The lower ends of the second light-incident surface (132) and the third light-incident surface (133) extend to the opening edge of the light-incident cavity (11), and the upper ends of the second light-incident surface (132) and the third light-incident surface (133) are respectively connected to the first light-incident surface (131).

5. An optical lens structure according to claim 2, characterized in that, A plurality of interconnected guiding cavities (15) are formed between a plurality of the guiding bodies (14). The plurality of guiding bodies (14) are respectively configured as the first light-incident surface (131), the second light-incident surface (132) and the third light-incident surface (133), and are respectively configured as the first light-incident body (141), the second light-incident body (142) and the third light-incident body (143). The diameter and distribution density of the first light-incident body (141), the second light-incident body (142) and the third light-incident body (143) decrease sequentially.

6. An optical lens structure according to claim 5, characterized in that, The axis of the second projectile (142) is at an angle of 8-15° with the first direction, the axis of the third projectile (143) is at an angle of 5-8° with the first direction, and the axis of the first projectile (141) is parallel to the reference axis.

7. An optical lens structure according to claim 2, characterized in that, With the direction that is perpendicular to both the reference axis and the first direction as the second direction, the outgoing light surface (121) forms a first arc-shaped profile in a cross-section that passes through the reference axis and is parallel to the first direction, and the outgoing light surface (121) forms a second arc-shaped profile in a cross-section that passes through the reference axis and is parallel to the second direction. The radius of curvature of the first arc-shaped profile is smaller than the radius of curvature of the second arc-shaped profile.

8. An optical lens structure according to claim 2, characterized in that, The lens body (1) also includes a base (16), and the light-emitting part (12) protrudes from one end face of the base (16). The light-emitting part (12) is inclined along the side near the second light-incident surface (132) toward the third light-incident surface (133).

9. A method for forming an optical lens structure, characterized in that, Applied to the optical lens structure as described in any one of claims 1-8, the lens body (1) and the guide body (14) are integrally formed.

10. A roof lighting module, characterized in that, Including the optical lens structure as described in any one of claims 1-8, the roof lighting module further includes a housing (20), a lamp panel (30), a light source (40), and a wire (50). The outer shell (20) is provided with a receiving cavity (21) and a light-emitting window (22). The lamp plate (30) is disposed in the receiving cavity (21), and the light source (40) is disposed on the lamp plate (30) and located on the opening side of the light-inlet cavity (11). The lens body (1) is positioned above the lamp panel (30), with the light-emitting surface (121) facing the light-emitting window (22); The wire (50) passes through the outer casing (20) and is electrically connected to the lamp panel (30); The housing (20) has a wall-mounted side and an outer side, with the first direction pointing from the outer side to the wall-mounted side.

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