An illumination structure without ghosting

Abstract

The present application relates to a kind of shadow-free lighting structure, including lamp group mounting plate, lens panel and light emitting component, cavity is arranged between lamp group mounting plate and lens panel, light emitting component is set in cavity and is opposite to lens panel, the upper end surface of lens panel is provided with polarizing bump, the side outer end surface of polarizing bump is incident light surface, the other side inner end surface of polarizing bump is reflection light surface, the lower end surface of lens panel is microlens body, one side of microlens body is short arc surface, the other side of microlens body is long arc surface, the light emitted by multiple light emitting components is divided into numerous microlens channels by the small lens group of microlens body, so that ghosting is continuous, so that ghosting problem is basically eliminated, in addition, the setting of polarizing bump increases polarized light, improves the uniformity of illumination field illumination, greatly improves the utilization of light, and microlens body also plays the role of mixing light and polarized light, further improves the uniformity of illumination.

Description

Technical Field

[0001] This invention relates to the field of lighting equipment technology, and more particularly to a ghost-free lighting structure. Background Technology

[0002] Currently, various lighting devices are widely used as auxiliary lighting fixtures in people's lives. Table lamps, for example, typically consist of LED beads and a lampshade composed of multiple lenses. The light emitted by the LED beads is projected through a small semi-circular lens. However, because the lens is composed of multiple lenses, it can only alleviate the problem of ghosting to a certain extent. The shadows cast by each lens on the object cannot overlap, resulting in ghosting. Specifically, as shown... Figure 1 The ghosting problem shown, and the fact that the light source emits light at a 180° angle, are examples of this. Figure 2 The portion of light within the α angle cannot be deflected to the desktop through refraction, resulting in insufficient desktop illumination and low light utilization, which is a problem we urgently need to solve. Summary of the Invention

[0003] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a ghost-free illumination, which solves the technical problem of ghosting caused by the fact that the shadows formed by each lens illuminating the object cannot overlap because the lens is composed of multiple lenses.

[0004] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by the present invention include: This invention provides a ghost-free lighting structure, including a lamp mounting plate, a lens panel disposed at the lower end of the lamp mounting plate, and a light-emitting component. A cavity is provided between the lamp mounting plate and the lens panel, and the light-emitting component is disposed in the cavity and opposite to the lens panel. A polarizing bump is provided on the upper end surface of the lens panel, one outer end surface of the polarizing bump is the incident light surface, and the other inner end surface of the polarizing bump is the reflected light surface. The lower end surface of the lens panel is a microlens, one side of the microlens is a short arc surface, and the other side of the microlens is a long arc surface.

[0005] Preferably, the incident light surface and the reflected light surface conform to the following calculation parameters: K(i) is the tangent line at the i-th point on the reflection curve of the polarizing bump, and the slope of the tangent line can be obtained by the incident unit vector and the outgoing unit vector; R(i) is the distance from the light source to the incident light surface of the polarizing bump, which is the lateral coordinate; L(i) is the longitudinal coordinate of the incident light surface; θ(i) is the angle between the outgoing ray from the reflecting surface and the normal, satisfying: .

[0006] Preferably, the microlens body is a three-dimensional wavy, honeycomb beaded, Fermat spiral beaded, Thiessen polygonal beaded, or textured microstructure.

[0007] Preferably, there are two or more polarizing bumps, and a light-emitting component is disposed between each pair of polarizing bumps.

[0008] Preferably, the reflective surface is an arc surface.

[0009] Preferably, there are two or more microlenses, which are arranged in a continuous manner to form a small lens group.

[0010] Preferably, the upper surface of the polarizing bump is an arc-shaped surface.

[0011] Preferably, the polarizing bump has an asymmetrical structure.

[0012] Preferably, the incident light surface is inclined downwards from right to left at a angle of 90 to 100° from the upper end face of the polarizing bump.

[0013] Preferably, the reflective surface extends downwards from left to right from the upper surface of the polarizing bump in an arc shape.

[0014] (III) Beneficial Effects The beneficial effects of the present invention are as follows: The ghost-free illumination structure of the present invention divides the light emitted by multiple light-emitting components into numerous microlens channels through a group of small lenses composed of microlenses, so that the ghosting is continuous and the ghosting problem is basically eliminated. In addition, the setting of the polarizing bump increases the polarization, improves the uniformity of the illumination field, greatly improves the utilization rate of light, and the microlenses also play the role of light mixing and polarization, further improving the uniformity of illumination. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a semi-circular lens in the prior art according to an embodiment of the present invention; Figure 2 In this embodiment of the invention, the light source emits light at a 180° angle, such as... Figure 2 The portion of light within angle α cannot be deflected to the desktop diagram by refraction; Figure 3 This is an overall structural diagram of an embodiment of the present invention; Figure 4 This is a half-sectional view of the overall structure in an embodiment of the present invention; Figure 5 As described in the embodiments of the present invention Figure 3 Enlarged view of point A in the image; Figure 6As described in the embodiments of the present invention Figure 3 The enlarged view at point B in the image shows the trajectory of the measured ray 9 after passing through the incident light surface inside the polarizing bump and then being reflected by the reflecting light surface.

[0016] [Explanation of Labels in the Attached Image] 1. Lamp mounting plate; 2. Light-emitting component; 3. Cavity; 4. Lens panel; 5. Polarizing protrusion; 51. Incident light surface; 52. Reflecting light surface; 6. Lens body; 61. Long arc surface; 62. Short arc surface; 7. Highest point; 8. Semicircular lens; 9. Light ray; 10. Illuminated object; 11. Ghosting. Detailed Implementation

[0017] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0018] like Figure 1 As shown, in the existing technical solution, the light 9 is scattered again by the semi-circular lens 8, which relatively reduces the ghosting 11 of the illuminated object 10 compared to the light 9 emitted by ordinary lighting. However, the problem of ghosting 11 still exists, and according to... Figure 2 As can be seen from the demonstration, the light emitted by the light-emitting component 2 will cause the light illuminating the surface within an α-angle range to deviate beyond the tabletop, resulting in this part of the light not being effectively utilized. The existing lighting structure is also unable to control this part of the light within a reasonable lighting range in order to achieve full utilization of the light.

[0019] Please see Figures 2 to 6 This embodiment provides a ghost-free lighting structure, including a lamp mounting plate 1, a lens panel 4 disposed at the lower end of the lamp mounting plate 1, and a light-emitting component 2. A cavity 3 is provided between the lamp mounting plate 1 and the lens panel 4, and the light-emitting component 2 is disposed in the cavity 3 and is disposed opposite to the lens panel 4. A polarizing protrusion 5 is formed by protruding upwards from the upper end of the lens panel 4. The upper end of the polarizing protrusion 5 is an arc-shaped surface. One outer end of the polarizing protrusion 5 is the incident light surface 51, and the other inner end of the polarizing protrusion 5 is the reflecting light surface 52. The reflecting light surface 52 is an arc-shaped surface. When light 9 enters the polarizing protrusion 5 from the incident light surface 51, when light 9 passes through the reflecting light surface 52, part of the light 9 will be reflected from the reflecting light surface 52, which increases the travel distance of light 9 inside the polarizing protrusion 5, so that light 9 can have enough travel distance for polarization and mixing, thereby improving the uniformity of illumination. Based on the above content and further parameter calculations, the incident light surface 51 and the reflected light surface 52 meet the following calculation parameters: taking K(i) as the tangent line at the i-th point on the reflection curve of the polarizing convex block 5, the slope of the tangent line can be obtained from the incident unit vector and the outgoing unit vector: R(i) is the distance from the light source to the incident light surface 51 of the polarizing bump 5, which is the lateral coordinate; L(i) is the longitudinal coordinate of the incident light surface 51; θ(i) is the angle between the outgoing ray from the reflecting surface 52 and the normal, and its formula satisfies: .

[0020] Among them, taking desktop illuminance distribution and light utilization as optimization objectives, and using LED beads as the light-emitting component as an example, according to... Figure 4 It can be seen that a portion of the light 9 emitted by the LED bead passes through the incident light surface 51 and forms an irradiation surface within the polarizing bump 5 with an angle range of α, and then reaches the reflecting light surface 52. Based on the various parameters of the parameterized light refraction mentioned above, calculations and controls are performed to ensure that the light 9 emitted by the LED bead is refracted from the incident light surface 51 and then from the reflecting light surface 52 back to the space on the tabletop. Figure 6 It can be seen that the light ray 9 illuminating the surface within the α angle range is polarized. By calculating the above parameters, the trajectory of the light ray 9 is rationally designed, which greatly improves the uniformity of the illumination of the illuminated light field and further improves the efficiency of light use.

[0021] The lower end surface of the lens panel 4 is a microlens body 6. Centered on the highest point 7 of the microlens body 6, one side of the microlens body 6 is a short arc surface 62, and the other side of the microlens body 6 is a long arc surface 61. There are two or more microlens bodies 6. In the continuous microlens bodies 6, the light 9 passing through the short arc surface 62 of one microlens body 6 and the long arc surface 61 of another microlens body 6 will be mixed and polarized again. It is equivalent to the light 9 forming a mixed scattering state when passing through many microlens bodies 6, which further improves the uniformity of illumination.

[0022] In this embodiment, the incident light surface 51 and the reflected light surface of the polarizing bump 5 are designed accordingly based on the above parameters, wherein the incident light surface 51 is a short slope and the reflected light surface 52 is a long slope.

[0023] In this embodiment, the microlens body 6 is a three-dimensional wavy, honeycomb beaded, Fermat spiral beaded, Thiessen polygonal beaded, or textured microstructure.

[0024] In this embodiment, there are two or more light-emitting components 2, and the light-emitting components 2 are LED lamp beads.

[0025] In this embodiment, there are two or more polarizing bumps 5, and light-emitting components 2 are arranged between each pair of polarizing bumps 5. The light 9 emitted by the light-emitting components 2 will be mixed within the polarizing bumps 5.

[0026] In this embodiment, the polarizing bump 5 has an asymmetrical structure.

[0027] In this embodiment, the incident light surface 51 is inclined downward from right to left at a angle of 90 to 100° from the upper end surface of the polarizing protrusion 5.

[0028] In this embodiment, the reflective surface 52 extends in an arc shape from the upper end surface of the polarizing protrusion 5 from left to right downwards.

[0029] In this embodiment, a group of microlenses divides the light emitted by multiple light-emitting components into numerous microlens channels, making the ghosting continuous (i.e., overlapping). In addition, the setting of the polarizing bump increases the polarization. By setting the light trajectory parameters of the incident light surface and the reflected light surface of the polarizing bump, the reflection trajectory of the light is controlled, and the light within the α angle is precisely controlled. This part of the light is completely reflected onto the table, which improves the uniformity of the illumination field and greatly improves the utilization rate of light. It can basically eliminate ghosting. Furthermore, the microlenses also play the role of light mixing and polarization, further improving the uniformity of illumination.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to 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.

[0031] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A ghost-free lighting structure, comprising a lamp mounting plate (1), a lens panel (4) disposed at the lower end of the lamp mounting plate (1), and a light-emitting component (2), wherein a cavity (3) is provided between the lamp mounting plate (1) and the lens panel (4), and the light-emitting component (2) is disposed within the cavity (3) and opposite to the lens panel (4), characterized in that: The upper end face of the lens panel (4) is provided with a polarizing bump (5). One side of the outer end face of the polarizing bump (5) is the incident light surface (51), and the other side of the inner end face of the polarizing bump (5) is the reflecting light surface (52). The reflecting light surface (52) will reflect the light. The lower end face of the lens panel (4) is a microlens body (6). One side of the microlens body (6) is a short arc surface (62), and the other side of the microlens body (6) is a long arc surface (61). There are more than two polarizing bumps (5), and a light-emitting component (2) is provided between each pair of polarizing bumps (5). The incident light surface (51) and the reflected light surface (52) conform to the following calculation parameters: K(i) is the tangent at the i-th point on the polarizing bump reflection curve, which can be obtained from the incident unit vector and the outgoing unit vector. R(i) is the distance from the light source to the incident light surface of the polarizing bump, which is the lateral coordinate; L(i) is the longitudinal coordinate of the incident light surface; θ(i) is the angle between the outgoing ray from the reflecting surface and the normal, satisfying: 。 2. The ghost-free lighting structure as described in claim 1, characterized in that: The microlens body (6) is a three-dimensional wavy, honeycomb bead, Fermat spiral bead, Thiessen polygon bead, and sun-textured microstructure.

3. The ghost-free lighting structure as described in claim 1, characterized in that: The reflective surface (52) is an arc surface.

4. The ghost-free lighting structure as described in claim 1, characterized in that: The number of microlens bodies (6) is two or more, and the microlens bodies (6) are arranged in a continuous manner to form a small lens group.

5. The ghost-free lighting structure as described in claim 1, characterized in that: The upper surface of the polarizing bump (5) is an arc-shaped surface.

6. The ghost-free lighting structure as described in claim 1, characterized in that: The polarizing bump (5) has an asymmetric structure.

7. The ghost-free lighting structure as described in claim 1, characterized in that: The incident light surface is inclined downwards from right to left at a angle of 90 to 150° from the upper end face of the polarizing bump.

8. The ghost-free lighting structure as described in claim 1, characterized in that: The reflective surface extends downwards from the upper surface of the polarizing bump in an arc shape from left to right.

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