Lamp lens structure

Abstract

The utility model provides a lamp lens structure which comprises a lens body, the lens body is provided with an optical light source light inlet face and an optical light source light outlet face, the optical light source light inlet face is provided with a multi-ring-layer optical arc structure in a corrugated diffusion shape, and the density of the multi-ring-layer optical arc structure is 0.4-1.0. And a calculus bead surface structure is arranged on the light emitting surface of the optical light source. In the utility model, the light incident surface of the optical light source distributes incident light in a segmented and partitioned manner through the multi-ring layer optical arc structure which is of a non-spherical curved surface and has different arc angles to form different refraction angles, and the whole light emergent surface of the optical light source is differentiated through the calculus bead surface structure to form different refraction angles. Light enters the optical light source incident surface and then penetrates out of the optical light source emergent surface to generate double refraction, multiple refraction of the upper layer and the lower layer and segmentation and partition, the light emergent surface is differentiated to have the effect of enabling the light to be crossed, mixed and uniformly distributed, the brightness and uniformity of the light are effectively improved, the floodlight is enhanced, and uniform transition in light spots is achieved. And the light efficiency is also guaranteed, and the light mixing capability is maximized through mutually staggered optical paths. When light enters from the direction of the light-emitting surface of the optical light source, primary refraction is generated when the light passes through optical calculus of the light-emitting surface of the optical light source, and the light penetrates into the lens body and is reflected back through the light-entering surface of the optical light source. Light incident from the light-emitting surface of the optical light source passes through the light-incident surface of the optical light source and then is reflected back, so that a light source, electrons and cables at the bottom of the lens body cannot be seen by eyes of people, and the lens body presents a glittering visual effect due to the fact that external light is reflected back.

Description

Technical Field

[0001] The utility model relates to the technical field of lenses, in particular to a lens structure for a lamp.

Background Art

[0002] Traditional downlights have a very wide application market and a huge market. Downlights belong to direct lighting, with a single lighting method and can only be used for simple lighting. Their illuminance is insufficient. When we need to enhance the lighting effect by illuminating specific scenes (such as TV walls, hanging paintings, ornaments, etc.) or feel that the illuminance is not bright enough when reading under the lamp, we can only replace the downlights with spotlights.

[0003] In order to integrate downlights and spotlights into one lighting fixture body, there are now downlight-spotlight integrated lamps on the market. In earlier designs, in the downlight-spotlight integrated lamps, the downlight lens and the spotlight lens were separately separated. For example, a patent with the publication number CN107559690A discloses an integrated ceiling downlight-spotlight.

[0004] In this case, we developed a lens that applies light concentration to downlights. It is applied to downlight-spotlight integrated lamps, which not only improves the brightness of basic lighting but also can achieve accent lighting, and can create a light charm at positions such as TV walls, ornaments, and hanging paintings, enhancing the scene atmosphere. When basic lighting is required, the downlight lighting part can be selected to light up, which can meet the space lighting effect. When accent lighting is required, the spotlight lighting part can be selected to light up, which can achieve the rendering atmosphere effect of items, ornaments, etc. When both basic lighting and accent lighting are selected, the downlight part and the spotlight part can be selected to light up simultaneously, which can not only meet the space brightness lighting but also meet the rendering effect of items, ornaments, etc., thereby improving the overall lighting effect of the space.

[0005] Among the above lenses, whether it is a separate downlight lens or the downlight optical processing part in the downlight-spotlight integrated lens, in order to shield the downlight LED light source, circuits, and cables in the lamp from being directly visible to users, there are generally two processing methods for the lens. One is to design it as milky white. This design can play a good role in shielding the downlight LED light source, but the light effect of the downlight light source is not good, the light transmittance is low, and the light loss is too large. The other is to set sunken patterns or frosting on the lens. The light effect of this downlight light source is better, but the shielding effect on the downlight LED light source is limited.

[0006] In view of the above problems, the present application proposes a new technical solution.

Content of the Utility Model

[0007] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model proposes a lens structure for a lamp, and the technical solutions adopted include:

[0008] A lamp lens structure includes a lens body. The lens body has an optical light source incident surface and an optical light source exit surface. The optical light source incident surface is a non-spherical curve lens, and a multi-layered optical arc structure in a corrugated diffusion shape is provided on the optical light source incident surface. The density of the multi-layered optical arc structure is 0.4 - 1.0; the optical arc structure is a three-dimensional layered structure, and the depth between two adjacent layered optical arc structures is d, and the ratio of this depth d to the thickness of the lens body is 1:3; a calculus bead surface structure is provided on the optical light source exit surface, and the calculus bead surface structure is a honeycomb bead surface structure.

[0009] According to an embodiment of the present invention, for a lamp lens structure, the lens body is planar, the optical light source incident surface is the bottom surface of the lens body, and the optical light source exit surface is the top surface of the lens body.

[0010] According to an embodiment of the present invention, for a lamp lens structure, the lens body has an arc-shaped contour structure with gradually tapering widths at both ends, in a crescent shape. The optical light source incident surface is the concave bottom surface of the lens body, and the optical light source exit surface is the concave top surface of the lens body.

[0011] According to an embodiment of the present invention, for a lamp lens structure, the lens body is trumpet-shaped, which includes a light condensing part provided in the middle and a floodlight part annularly arranged around the light condensing part. The optical light source incident surface is the incident surface of the floodlight part, and the optical light source exit surface is the exit surface of the lens body.

[0012] According to an embodiment of the present invention, for a lamp lens structure, a light condensing structure is provided on the incident surface of the light condensing part.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In the present utility model, the light incident surface of the optical light source divides and distributes the incident light in segments and regions through a multi-layer optical arc structure with a non-spherical curved surface, having depth and density, and different arc angles, and forms different refraction angles. Through the calculus spherical surface structure, combined with the Fermat spiral technology, the entire light-emitting surface of the optical light source is differentiated, and different refraction angles are formed. When the light is incident from the direction of the light incident surface of the optical light source, it undergoes a first refraction when passing through the optical arc structure of the light incident surface of the optical light source, and then undergoes a first refraction when passing through the calculus spherical surface structure of the light-emitting surface of the optical light source. The light is incident on the light incident surface of the optical light source and then exits the light-emitting surface of the optical light source, resulting in two refractions. When the light is incident from the direction of the light-emitting surface of the optical light source, it undergoes a first refraction when passing through the calculus spherical surface structure of the light-emitting surface of the optical light source, and is reflected back when passing through the optical arc structure of the light incident surface of the optical light source through the lens body. The multiple refractions, segmental and regional division, and differentiation of the light-emitting surface in the upper and lower layers also have the effect of making the light evenly distributed, effectively increasing the brightness and uniformity of the light, enhancing the floodlight effect. While achieving a uniform transition inside the light spot, the light efficiency is also guaranteed. The intersecting optical paths also make the light mixing ability reach the extreme, solving the problem of low light transmittance of traditional downlight lens sheets, and being able to increase the light transmittance by more than 35%. Visually, the light incident from the light-emitting surface of the optical light source passes through the light incident surface of the optical light source and then is reflected back, making the human eye unable to see the light source, electronics, and cables at the bottom of the lens body. Moreover, due to reflecting the external light back, the lens body presents a shiny visual effect.

Description of the Drawings

[0015] The above and / or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0016] Figure 1 is the structural schematic diagram of the optical lens structure according to Embodiment 1 of the present application Figure 1 ;

[0017] Figure 2 is the structural schematic diagram of the optical lens structure according to Embodiment 1 of the present application Figure 2 ;

[0018] Figure 3 is the cross-sectional view of the optical lens structure according to Embodiment 1 of the present application;

[0019] Figure 4 is the structural schematic diagram of the optical lens structure according to Embodiment 2 of the present application Figure 1 ;

[0020] Figure 5 is the structural schematic diagram of the optical lens structure according to Embodiment 2 of the present application Figure 2 ;

[0021] Figure 6It is a cross-sectional view of the optical lens structure described in the second embodiment of the present application;

[0022] Figure 7 It is a schematic structure diagram of the optical lens structure described in the third embodiment of the present application Figure 1 ;

[0023] Figure 8 It is a schematic structure diagram of the optical lens structure described in the third embodiment of the present application Figure 2 ;

[0024] Figure 9 It is a cross-sectional view of the optical lens structure described in the third embodiment of the present application.

[0025] Description of main element symbols:

[0026] 10. Lens body; 20. Optical light source incident surface; 30. Optical light source exit surface; 40. Condensing part; 50. Floodlight part.

Detailed implementation manners

[0027] The embodiments of the present utility model will be described in detail below. The described embodiments are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end.

[0028] The orientation shown in the drawings should not be construed as limiting the specific protection scope of the present utility model. It is only for reference and understanding of the preferred embodiments. The positions of the product components shown in the drawings can be changed, the quantity can be increased, or the structure can be simplified.

[0029] The "connection" described in the specification and the "connection" relationship between the components shown in the drawings can be understood as fixedly connected, detachably connected, or integrally formed; it can be directly connected or connected through an intermediate medium. Those of ordinary skill in the art can understand the connection relationship according to the specific situation and can obtain different implementation manners by appropriate means such as screwing, riveting, welding, clamping, or embedding.

[0030] The orientation words such as upper, lower, left, right, top, bottom, etc. described in the specification and the orientation shown in the drawings. The components can be in direct contact or in contact through other features between them; for example, being above can be directly above or obliquely above, or it only means being higher than other objects; the same can be analogously understood for other orientations.

[0031] The manufacturing materials of the components with physical shapes shown in the specification and drawings can be metallic materials, non-metallic materials or other composite materials; the machining processes for the components with physical shapes can be stamping, forging, casting, wire cutting, laser cutting, injection molding, numerical milling, 3D printing, machining, etc.; those of ordinary skill in the art can adaptively select or combinatorially select according to different processing conditions, costs and precisions, but are not limited to the above materials and manufacturing processes.

[0032] The present utility model provides a lamp lens structure. In Embodiments 1, 2 and 3, as Figures 1 to 9 shown, it includes a lens body 10, and the lens body 10 has an optical light source incident surface 20 and an optical light source exit surface 30; the optical light source incident surface 20 is a non-spherical curve lens, and the optical light source incident surface 20 is provided with a multi-layered optical arc structure in a corrugated diffusion shape thereon, so that each layer of the optical arcs has different angles, the density of the multi-layered optical arc structure is 0.4 - 1.0, that is to say, the average distance between two adjacent layers of the optical arc structure is 0.4 - 1.0, the optical arc structure is a three-dimensional layered structure, and the depth between two adjacent layers of the optical arc structure is d, and the ratio of this depth d to the thickness of the lens body is 1:3; the optical light source exit surface 30 is provided with a calculus bead surface structure thereon, and the calculus bead surface structure is a honeycomb bead surface structure arranged in a Fermat spiral array. In the present utility model, through the calculus bead surface structure, the entire optical light source exit surface 30 is differentiated in combination with the Fermat spiral technology and different refraction angles are formed.

[0033] In the present utility model, the light incident surface 20 of the optical light source divides and distributes the incident light in segments and regions through a multi-layer optical arc structure with a non-spherical curved surface, having depth and density, and different arc angles, and forms different refraction angles. Through the calculus bead surface structure, combined with the Fermat spiral technology, the entire light-emitting surface 30 of the optical light source is differentiated and forms different refraction angles. When the light is incident from the direction of the light incident surface 20 of the optical light source, it undergoes a first refraction when passing through the optical arc structure of the light incident surface 20 of the optical light source, and then undergoes a first refraction when passing through the calculus bead surface structure of the light-emitting surface 30 of the optical light source. The light is incident on the light incident surface 20 of the optical light source and then exits through the light-emitting surface 30 of the optical light source, resulting in two refractions. When the light is incident from the direction of the light-emitting surface 30 of the optical light source, it undergoes a first refraction when passing through the calculus bead surface structure of the light-emitting surface 30 of the optical light source, and is reflected back when passing through the optical arc structure of the light incident surface 20 of the optical light source through the lens body. The multiple refractions, segmental and regional division, and differentiation of the light-emitting surface in the upper and lower layers also have the effect of making the light cross and mix evenly, effectively increasing the brightness and uniformity of the light, enhancing the floodlight effect, achieving a uniform transition inside the light spot, and ensuring the light efficiency at the same time. The intersecting optical paths also maximize the light mixing ability, solve the problem of low light transmittance of the traditional downlight lens, and can increase the light transmittance by more than 35%. Visually, the light incident from the light-emitting surface 30 of the optical light source passes through the light incident surface 20 of the optical light source and then is reflected back, making the eyes unable to see the light source, electronics, and cables at the bottom of the lens body. Moreover, due to reflecting the external light back, the lens body 10 presents a shiny visual effect.

[0034] In the first embodiment of the present utility model, as Figure 1 、 2 、Figure 3 shows, the lens body 10 is planar, the light incident surface 20 of the optical light source is the bottom surface of the lens body 10, and the light-emitting surface 30 of the optical light source is the top surface of the lens body 10.

[0035] In the second embodiment of the present utility model, as Figure 4 、 5 、Figure 6 shows, the lens body 10 has an arc-shaped contour structure with gradually tapered widths at both ends, is crescent-shaped, the light incident surface 20 of the optical light source is the concave bottom surface of the lens body 10, and the light-emitting surface 30 of the optical light source is the concave top surface of the lens body 10.

[0036] The optical lens structures provided in the first embodiment and the second embodiment are only for the lenses applied in downlight fixtures. Therefore, the present utility model also provides a downlight, which adopts the optical lens structure embodied by the planar lens body 10 shown in the first embodiment, or the optical lens structure embodied by the crescent-shaped lens body 10 shown in the second embodiment.

[0037] In the third embodiment of the present utility model, as Figure 7 、8 As shown in FIG. 9, the optical lens structure provided in the third embodiment is for the lens applied in the integrated spotlight and floodlight fixture. Therefore, the present invention also provides an integrated spotlight and floodlight. In the integrated spotlight and floodlight, the lens body 10 is in a horn shape, which includes a condensing part 40 provided in the middle and a floodlight part 50 disposed around the condensing part 40. The incident light surface 20 of the optical light source is the incident light surface of the floodlight part 50, and the exit light surface 20 of the optical light source is the exit light surface of the lens body 10. A condensing structure is provided on the incident light surface of the condensing part 40 to condense the light emitted by the spotlight.

[0038] A spotlight light source is correspondingly arranged below the condensing part 40 (i.e., the center of the lens body) of the lens body 10, and a downlight light source is correspondingly arranged below the floodlight part 40 of the lens body 10. Through the up-and-down mutual cooperation of the condensing part 40 and the exit light surface 20 of the optical light source, the light is aggregated by the condensing part 40 and refracted out from the top of the condensing part 40. Then, the exit light surface 30 of the optical light source converges the light again and refracts it out again.

[0039] In order to improve the light efficiency of the spotlight light source, a light mixing structure can also be provided on the exit light surface of the condensing part 40. The light mixing structure is used to make the light beam irradiated on the condensing part 40 form a uniform light beam, thereby improving the spotlight light efficiency and making the light efficiency uniform and soft.

[0040] Both the condensing structure and the light mixing structure are Fresnel lens structures. The Fresnel lens structure is a Fresnel annular stripe. When the light mixing structure preferably adopts a Fresnel annular stripe, it can not only mix the light beam but also control the light beam angle. The light mixing structure can also be other bead surface or matte microstructures, such as compound eye dot surface or texturing. The texturing can be shallow texturing, as long as the light mixing structure can achieve the effect of making the light beam uniform and the light efficiency uniform and soft.

[0041] When the optical lens structure described in the third embodiment of the present application is applied to the integrated spotlight and floodlight, only the spotlight light source is turned on, which provides focused lighting. Moreover, the emitted light beam of the spotlight light source has high brightness, good uniformity, good floodlight effect, good spot uniformity, and effectively optically shields and hides the downlight light source, electronics, and cables below the lens body 10.

[0042] When the optical lens structure described in the third embodiment of the present application is applied to the integrated spotlight and floodlight, the downlight light source and the spotlight light source are turned on simultaneously, which provides focused lighting and basic brightness lighting. Moreover, the light emission effect has high brightness, good uniformity, good floodlight effect, good spot uniformity, and effectively optically shields and hides the downlight light source, electronics, and cables below the lens body 10.

[0043] When the optical lens structure described in the third embodiment of the present application is applied to a downlight-integrated spotlight, only the downlight source is turned on, which provides basic brightness illumination, and the light-emitting effect has high brightness, good uniformity, good floodlight, good spot uniformity, and effectively optically shields and hides the downlight source, electronics, and cables below the lens body 10.

[0044] Although the present utility model has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art through the present disclosure that various changes or modifications can be made to the present utility model without departing from the principle and spirit scope of the present utility model defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, rather than to limit the present utility model, and the scope of protection is defined by the content of the claims.

Claims

1. A lamp lens structure, characterized in that: The invention comprises a lens body (10), wherein the lens body (10) has an optical light source incident surface (20) and an optical light source exit surface (30), wherein the optical light source incident surface (20) is a non-spherical curved lens, and the optical light source incident surface (20) is provided with a multi-layer optical arc structure in a corrugated diffusion shape, and the density of the multi-layer optical arc structure is 0.4-1.0; the optical arc structure is a three-dimensional layer structure, and the depth of the optical arc structure of two adjacent layers is d, and the ratio of the depth d to the thickness of the lens body is 1:3; the optical light source exit surface (30) is provided with a calculus bead surface structure, and the calculus bead surface structure is a honeycomb bead surface structure.

2. The lamp lens structure according to claim 1, characterized in that: The lens body (10) is planar, the optical light source incident surface (20) is the bottom surface of the lens body (10), and the optical light source exit surface (30) is the top surface of the lens body (10).

3. The lamp lens structure according to claim 1, characterized in that: The lens body (10) has an arc-shaped profile structure with a gradually decreasing width at both ends; the optical light source incident surface (20) is the concave bottom surface of the lens body (10); and the optical light source exit surface (30) is the concave top surface of the lens body (10).

4. The lamp lens structure according to claim 1, characterized in that: The lens body (10) is trumpet-shaped and comprises a light-collecting portion (40) arranged in the middle and a floodlight portion (50) arranged around the light-collecting portion (40); the optical light source light incident surface (20) is the light incident surface of the floodlight portion (50); and the optical light source light exit surface (30) is the light exit surface of the lens body (10).

5. The lamp lens structure according to claim 4, characterized in that: A light-focusing structure is provided on the light-incident surface of the light-focusing portion (40).

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