A light diffuser, lampshade and soft light fixture for changing the light output effect of a light source

Abstract

The present invention discloses a light diffusing plate, a lamp shade and a soft light fixture for changing the light output effect of a light source. The light diffusing plate comprises at least two layers of polygonal convex array plates. The polygonal convexes on the front surface of the polygonal convex array plate are of solid structures, and there are edges from the central vertex of the surface of the polygonal convex to each corner. There is a rotation angle between the polygonal convexes of each layer and those of the adjacent layer. By means of at least two layers of polygonal convex array plates, the present invention changes the direction of the emitted light and focuses the light layer by layer, so that the emitted light forms an obvious bright-dark boundary line according to the edges and planes on the surface of the polygonal convexes. After being superimposed by at least two layers, the original light source is divided into a point light source array with a smaller unit volume, obvious boundaries, light output directions and uniform brightness distribution. Compared with the traditional light diffusing plate, the light emitting surface is still uniform, but the light focusing effect is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of soft light plates, and particularly to a soft light plate, a lamp shade and a soft light fixture for changing the light-emitting effect of a light source. Background Art

[0002] The light of a soft light lamp is soft and has no obvious shadow. It is usually composed of a soft light plate and a light source. The soft light plate is the core component, which can make the light irradiated on the soft light plate evenly distributed as much as possible. It converts the rigid direct light into soft diffused light through an optical device with a softening effect and irradiates it on an object.

[0003] In the prior art, for example, the utility model with the publication number CN202149442U discloses a soft light plate for an LED soft light lamp. The inner side of the soft light plate is a straight edge, and the outer side is a non-smooth shape. The inner side is connected to the lamp body of the LED soft light lamp through a bracket. At least one surface of the soft light plate is a rough surface, and this rough surface is arranged on the surface opposite to the LED light source. This soft light plate softens the light field edge of the LED soft light lamp, so that a transition area with a gradually decreasing light intensity is formed at the light field edge. There will be no obvious spot connection boundary in the irradiated area.

[0004] Another example is the utility model with the publication number CN201116961, which discloses a honeycomb soft light plate for a photographic lamp radar cover, including a soft light plate and a honeycomb plate. The soft light plate is a circular through-hole ring-shaped white soft light cloth plate with a circular through-hole in the center, and the honeycomb plate is embedded in the circular through-hole of the soft light plate. The outer circular edge of the honeycomb plate has a mounting clip. The honeycomb plate is a metal mesh plate with honeycomb-shaped light-transmitting holes, and its light-transmitting holes are regular hexagonal holes. It can create a parallel light source and has a soft light effect.

[0005] In order to achieve the soft light effect, the current soft light plates all make the point light source become a surface light source effect after passing through the soft light plate, or evenly expand the light-emitting surface of the surface light source. However, since the existing soft light plates all use the principle of diffuse reflection, the light is very divergent. But in some scenarios, especially in photography work, the opposite effect of part of the traditional soft light plate is required, that is, to avoid diffuse reflection on the premise of uniform light output, reduce the divergence of light to improve the lighting effect. The current prior art cannot achieve this. Summary of the Invention

[0006] In view of the problem that the soft light plates in the prior art cannot ensure uniform light output while reducing light divergence, the present invention provides a soft light plate, a lamp shade and a soft light fixture for changing the light output effect of a light source. Through at least two layers of polygonal convex array plates, light refraction and reflection are respectively carried out on each layer. The polygonal convexes on each layer can change the direction of the light emitted by the light source behind it, and the light is concentrated layer by layer, so that the outgoing light forms obvious bright and dark dividing lines according to the edges and planes on the surface of the polygonal convexes. After at least two layers of superposition, the original light source is divided into a point light source array with a smaller unit volume, obvious boundaries, light output directions and uniform brightness distribution. On the premise of uniformly expanding the light emitting surface, the light no longer diverges at a large angle, and the light concentrating effect is enhanced compared with the traditional soft light plate.

[0007] The following is the technical solution of the present invention.

[0008] A soft light plate for changing the light output effect of a light source includes at least two layers of polygonal convex array plates. The polygonal convexes on the front surface of the polygonal convex array plate are solid structures. There are edges from the central vertex to each corner on the surface of the polygonal convex. There is a rotation angle between the polygonal convexes on each layer and the polygonal convexes on the adjacent layer.

[0009] The polygonal convexes in the present invention refer to structures with a polygonal bottom surface and edges on the surface, rather than a dome structure. When the light source behind irradiates the polygonal convex array plate, through phenomena such as refraction, reflection and total reflection in the polygonal convexes, there will be an obvious light concentrating effect on the front outgoing light. And because the surface of the polygonal convex is a structure with edges, the direction of the outgoing light is not continuous but discontinuous. Therefore, there will be light spots with obvious boundaries and directions, alternating bright and dark, with the edges and central vertices on the surface of the polygonal convex as the bright parts, forming a point light source array in which the outgoing light directions are mostly perpendicular to the soft light plate. After passing through the second layer of polygonal convex array plate, through the same phenomena such as refraction, reflection and total reflection, a finer and more uniform light output point light source array is finally formed. That is to say, the present invention divides the original point light source or surface light source behind into a point light source array with a smaller unit volume, obvious boundaries, light output directions and uniform brightness distribution. On the premise of uniformly expanding the light emitting surface, the light no longer diverges at a large angle, and the light concentrating effect is enhanced compared with the traditional soft light plate.

[0010] Preferably, the polygonal convex is a regular hexagon convex. The array formed by regular hexagon convexes can extend infinitely at the same angle, which is beneficial for manufacturing, has distinct edges and corners, the included angles between the planes and edges on the surface are appropriate, and the structure is stable.

[0011] Preferably, the polygonal protrusions are regular octagonal protrusions. In another alternative, an array formed by regular octagonal protrusions can also extend infinitely at the same angle, which is beneficial for manufacturing, has distinct edges and corners, and the included angles between the planes and edges on the surface are appropriate, but the structural stability is slightly lower than that of regular hexagonal protrusions.

[0012] Preferably, at the cone angle where the central vertex of the surface of the regular hexagonal protrusion is located, the included angle formed by every two diagonal edges is 100-110 degrees. At this angle, the light emission is the most concentrated, the brightness difference between the bright part and the dark part is the largest, the contour is the clearest, and the light emission between different bright parts is uniform.

[0013] Preferably, the rotation angle is 90 degrees. When the regular hexagonal protrusion rotates 90 degrees, the light emission direction also differs by 90 degrees, which can balance the light emission in all directions and comprehensively obtain a point light source array with the most obvious boundary and the most uniform brightness distribution.

[0014] Preferably, a groove is provided on the back of the polygonal protrusion array plate, and the position of the groove corresponds to the position of a single light source one by one. The groove can semi-embed and accommodate the light source behind, making the utilization efficiency of the light source higher.

[0015] Preferably, the diameter of the circumcircle of the regular hexagon of the regular hexagonal protrusion is 1.7 mm to 2 mm, and the diameter of the incircle of the hexagon is 1.55 mm to 1.65 mm. At this size, the manufacturing difficulty is appropriate and the light emission effect is better.

[0016] The present invention also provides a lampshade for changing the light emission effect of a light source, including the above-mentioned light softening plate for changing the light emission effect of a light source. Since the light emission effect no longer mainly relies on diffuse reflection but has a certain light concentrating effect, external structures such as a light shielding plate and a light concentrating plate can be omitted when using this lampshade.

[0017] The present invention also provides a light softening lamp for changing the light emission effect of a light source, including a light source and a lampshade, and the lampshade is provided with the above-mentioned light softening plate for changing the light emission effect of a light source. Since the light emission effect no longer mainly relies on diffuse reflection but has a certain light concentrating effect, external structures such as a light shielding plate and a light concentrating plate of the lamp can be omitted, making the volume smaller.

[0018] The substantial effects of the present invention include: when the light source on the back works, it irradiates the polygonal convex array plate. Through refraction, reflection, total internal reflection and other phenomena inside the polygonal convexes, there will be obvious angles in the light emitted from the front. And because the surface of the polygonal convexes is a structure with edges and corners, the direction of the emitted light is discontinuous rather than continuous. Therefore, there will be light and dark spots with obvious boundaries and directions, with the edges and central vertices of the surface of the polygonal convexes as the bright parts, forming a preliminary but not very uniform point light source array. After passing through the second-layer polygonal convex array plate, through the same refraction, reflection, total internal reflection and other phenomena, a finer and more uniform point light source array is finally formed. That is to say, the present invention divides the original point light source or surface light source behind into a point light source array with a smaller unit volume, obvious boundaries, light-emitting directions and uniform brightness distribution after passing through the light diffusing plate. On the premise of uniformly expanding the light-emitting surface, the light no longer diverges at large angles, and the light-gathering effect is enhanced compared with traditional light diffusing plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the polygonal convex array plate according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the polygonal convex according to an embodiment of the present invention;

[0021] Figure 3 is a cross-sectional view of the polygonal convex according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of the light diffusing plate with two layers of polygonal convex array plates according to an embodiment of the present invention;

[0023] Figure 5 is the actual light-emitting effect diagram of the single-layer polygonal convex array plate according to an embodiment of the present invention;

[0024] Figure 6 is the actual light-emitting effect diagram of the two-layer polygonal convex array plate according to an embodiment of the present invention;

[0025] In the figure, it includes: 1 - polygonal convex array plate, 2 - polygonal convex, 3 - edge, 4 - included angle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in combination with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be understood that in various embodiments of the present invention, the sequence numbers of the various processes do not imply the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0028] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] It should be understood that in the present invention, "a plurality of" means two or more. " / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "Including A, B, and C", "including A, B, C" means that all of A, B, and C are included. "Including A, B, or C" means including one of A, B, and C. "Including A, B, and / or C" means including any one or any two or all three of A, B, and C.

[0030] The technical solutions of the present invention will be described in detail below with specific embodiments. The embodiments can be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

[0031] Embodiment:

[0032] As Figures 1-6 shown, this embodiment provides a soft light plate for changing the light-emitting effect of a light source, including a two-layer polygonal convex array plate 1. Figure 1 is a schematic diagram of a polygonal convex array plate. The back surface of the polygonal convex array plate is a flat surface or a smooth curved surface with a small angle bend. The polygonal convexes 2 on the front surface of the polygonal convex array plate are solid structures, and equidistant gaps are left between adjacent polygonal convexes. The degree of diffuse reflection can be adjusted by making different surface roughnesses.

[0033] As Figure 2 shown, in this embodiment, the polygonal convexes are regular hexagonal convexes, and there are edges 3 from the central vertex to each corner on the surface of the regular hexagonal convexes. The array formed by the regular hexagonal convexes can extend infinitely at the same angle, which is beneficial for manufacturing, and has distinct edges and corners, and the included angles between the planes and edges on the surface are appropriate, and the structure is stable.

[0034] As Figure 3As shown, at the cone angle where the central vertex of the regular hexagon convex surface is located, the angle 4 formed by every two diagonal edges is 100 - 110 degrees. In this embodiment, 105 degrees is adopted. At this angle, the light emission is the most concentrated, the brightness difference between the bright part and the dark part is the largest, the contour is the clearest, and the light emission between the bright parts is uniform. It should be noted that when the degree between 100 - 110 degrees is adopted, the effect difference is not obvious.

[0035] In this embodiment, there is a rotation angle between the polygon convexes of each layer and the polygon convexes of the adjacent layer, and the rotation angle is 90 degrees. It can be understood that one polygon convex array plate is set horizontally, and the other is set vertically. When the regular hexagon convex rotates 90 degrees, the light emission directions also differ by 90 degrees, which can balance the light emission in all directions and comprehensively obtain a point light source array with the most obvious boundary and the most uniform brightness distribution.

[0036] In this embodiment, the diameter of the circumscribed circle of the regular hexagon convex is 1.8 mm, but it is feasible between 1.7 mm and 2 mm. The diameter of the inscribed circle of the hexagon is 1.6 mm, but it is feasible between 1.55 mm and 1.65 mm. At this size, the manufacturing difficulty is appropriate and the light emission effect is better.

[0037] In this embodiment, the light source used is an n*n light source array. Due to the need for heat dissipation, there is an obvious interval between individual light sources. When this light source array irradiates a single polygon convex array plate, its effect is as Figure 5 shown. Since the surface of the polygon convex has an angular structure rather than a dome structure, when the light source on the back irradiates the polygon convex array plate, through phenomena such as refraction, reflection, and total internal reflection in the polygon convex, there will be an obvious angle in the light emitted from the front. And because the surface of the polygon convex has an angular structure, the direction of the emitted light is not continuous but discontinuous. Therefore, there will be light spots with bright parts at the edges and the central vertex of the polygon convex surface, with bright and dark intervals and obvious boundaries and directions. Although the sizes and shapes of these light spots are different, the light emission directions are the same, and the brightness distribution is more uniform than that of the original light source, forming a point light source array with the same light emission direction. In Figure 5 it is shown as a point light source array with different sizes but obvious bright and dark boundaries.

[0038] As Figure 6 shown, after passing through the second layer of polygon convex array plate, through the same phenomena such as refraction, reflection, and total internal reflection, a finer and more uniform point light source array is finally formed. That is to say, in this embodiment, the original point light source or surface light source behind is divided into a point light source array with a smaller unit volume, obvious boundaries and emission directions, and uniform brightness distribution after passing through the diffuser plate. On the premise of uniformly expanding the light-emitting surface, the light no longer diverges at a large angle, and the light concentration effect is enhanced compared with the traditional diffuser plate. It is manifested in Figure 6It is the visual effect of a dense dot-shaped light source, and due to a significant reduction in diffuse reflection, the light-emitting direction is concentrated. Compared with traditional diffuser plates, the spotlighting effect is increased by 140%-160%, and sometimes even better than the effect of a traditional diffuser plate with a spotlight hood.

[0039] In another embodiment, grooves are provided on the back of the polygonal convex array plate, and the positions of the grooves correspond one by one to the positions of individual light sources. The grooves can semi-embed and accommodate the light sources behind, making the utilization efficiency of the light sources higher. And the polygonal protrusions are regular octagon protrusions. The array formed by the regular octagon protrusions can also extend infinitely at the same angle, which is conducive to manufacturing, with distinct edges and corners, and the angles between the planes and edges of the surface are appropriate, but the structural stability is slightly lower than that of the regular hexagon protrusions.

[0040] In another embodiment, a lamp shade for changing the light-emitting effect of a light source is also provided, including a diffuser plate for changing the light-emitting effect of the light source as described above. Since the light-emitting effect no longer mainly relies on diffuse reflection but has a certain spotlighting effect, external structures such as light-shielding plates and condenser plates can be omitted when using this lamp shade.

[0041] In another embodiment, a diffuser lamp for changing the light-emitting effect of a light source is also provided, including a light source and a lamp shade, and the lamp shade is provided with a diffuser plate for changing the light-emitting effect of the light source as described above. Since the light-emitting effect no longer mainly relies on diffuse reflection but has a certain spotlighting effect, external structures such as light-shielding plates and condenser plates can be omitted for this lamp, making it possible to make the volume smaller.

[0042] Through the description of the above embodiments, those skilled in the art can understand that for the convenience and simplicity of description, only the above-mentioned division of each functional module is used as an example. In actual applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of a specific device is divided into different functional modules to complete all or part of the functions described above.

[0043] In the embodiments provided in this application, it should be understood that the disclosed structures and methods can be implemented in other ways. For example, the embodiments of the structures described above are merely illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another structure, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed with each other can be through some interfaces, indirect couplings or communication connections of structures or units, and can be in electrical, mechanical or other forms.

[0044] The unit described as a separating component may or may not be physically separated. The component displayed as a unit may be a physical unit or multiple physical units, that is, it may be located in one place, or may also be distributed to multiple different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0045] The above content is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A soft light plate for changing the light-emitting effect of a light source, characterized in that A polygonal convex array plate including at least two layers, wherein the polygonal convexes on the front surface of the polygonal convex array plate are solid structures, there are edges from the central vertex of the surface of the polygonal convex to each corner, and there is a rotation angle between the polygonal convexes of each layer and the polygonal convexes of the adjacent layer; The polygonal convex is a regular hexagon convex or a regular octagon convex; The rotation angle is 90 degrees.

2. The soft light plate for changing the light output effect of a light source according to claim 1, characterized in that, When the polygonal convex is a regular hexagon convex, at the cone angle where the central vertex of the surface of the regular hexagon convex is located, the included angle formed by every two diagonal edges is 100-110 degrees.

3. The soft light plate for changing the light-emitting effect of a light source according to claim 1, wherein, A groove is provided on the back surface of the polygonal convex array plate, and the position of the groove corresponds to the position of a single light source one by one.

4. The soft light plate for changing the light-emitting effect of a light source according to claim 1, characterized in that, When the polygonal convex is a regular hexagon convex, the diameter of the circumscribed circle of the regular hexagon convex is 1.7 mm to 2 mm, and the diameter of the inscribed circle of the hexagon is 1.55 mm to 1.65 mm.

5. A lampshade for changing the light-emitting effect of a light source, characterized in that, A light diffusing plate for changing the light-emitting effect of a light source, comprising the light diffusing plate according to any one of claims 1-4.

6. A soft light fixture for changing the light output effect of a light source, comprising a light source and a lamp shade, characterized in that, The lamp shade is provided with a light diffusing plate for changing the light-emitting effect of a light source, comprising the light diffusing plate according to any one of claims 1-4.

Images