Optical lens

Abstract

The utility model relates to the technical field of lighting equipment, in particular to an optical lens which comprises a lens body, the lens body comprises a mounting surface and a light-emitting surface which are oppositely arranged, a light inlet cavity formed by the mounting surface is arranged in the lens body, the light-emitting surface comprises a multi-petal area and an annular arc area, the multi-petal area is provided with a plurality of arc petal structures, and the annular arc area is provided with a plurality of arc petal structures. Each arc petal structure is arranged around a center shaft in an annular array mode, the width of each arc petal structure is reduced from outside to inside in the direction from the outer side to the center shaft, the arc petal structures converge at one point at the center shaft, the convergent point is in a concave state, the annular arc area is arranged outside the multi-petal area in a winding mode, and the annular arc area is formed by an arc line surrounding the center shaft by a circle. According to the lens, better uniformity is achieved after light is emitted, the better light emitting angle is achieved, and the use requirements of a lamp in different scenes can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting equipment technical field, especially optical lens. BACKGROUND

[0002] LED lamp gradually becomes the mainstream choice of lighting tool because of its advantages of high brightness, energy saving and lightness. LED lighting lamps and lanterns include ceiling lamp and direct down lamp. The existing ceiling lamp and direct down lamp need LED patch lamp bead and single lens cooperation to realize the divergent distribution of light beam. With the improvement of people's pursuit of high-quality life demand, new requirements are put forward for lamp design shape, light uniformity, light shape structure and the like. The existing ordinary lens is insufficient to meet. Therefore, a new lens structure needs to be designed as the basis to meet the use demand of lamps and lanterns in different scenes. SUMMARY

[0003] In order to overcome the defects in the prior art, the utility model provides an optical lens.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an optical lens, comprising a lens body, the lens body includes oppositely arranged mounting surface and light emitting surface, the lens body is provided with a light inlet cavity formed by the mounting surface, the light emitting surface includes a multi-lobe area and a ring arc area, the multi-lobe area has a plurality of arc lobe structures, each arc lobe structure is arranged in a circular array around a center axis, the arc lobe structure is arranged from the outside to the center axis direction, and the width of the arc lobe structure is reduced from the outside to the inside, each arc lobe structure converges at a point at the center axis, and the convergence point is in a concave state, the ring arc area is arranged outside the multi-lobe area, and the ring arc area is formed by one arc line around the center axis.

[0005] Further, the radius of the outer edge of the multi-lobe area to the center axis is r1, the radius of the outer edge of the ring arc area to the center axis is r2, and the relationship between r1 and r2 satisfies 0.2r2≤r1≤0.8r2.

[0006] Further, the mounting surface and the light emitting surface are further formed with an outer side wall, and the outer side wall is formed by vertically extending the ring arc area towards the mounting surface.

[0007] Further, the outer side wall and the mounting surface are provided with a grain.

[0008] Further, the number of the arc lobe structure is N, N is a natural number, and N≥6.

[0009] Further, the mounting surface is provided with a recessed step surface, the step surface is provided with a recessed lamp bead placement site, and the light inlet cavity is further formed by the lamp bead placement site towards the light emitting surface.

[0010] Further, the light inlet cavity forms a taper structure from the mounting surface to the light outlet surface, the light inlet cavity comprises a plurality of light inlet portions combined from the mounting surface to the light outlet surface, each light inlet portion is formed by an array of curved surfaces around a central axis, the number of curved surfaces in each light inlet portion is consistent, the number of curved surfaces in each light inlet portion array is M, M is a natural number, and M is greater than or equal to 6.

[0011] Further, the lens body material is one of polycarbonate and acrylic.

[0012] Further, the light distribution curve generated by the lens body is asymmetric, the beam peak angle of the C0° / 180° cross section of the lens is 154°±5°, and the beam peak angle of the C90° / 270° cross section is 152°±5°, the light distribution curve is narrow and elongated, and the divergent light is formed.

[0013] From the above description of the utility model, compared with the prior art, the optical lens provided by the utility model is designed, a new optical structure, light uniformity and beam angle are proposed. The light emitted by the lamp bead enters the lens body through the wall surface of the light inlet cavity and is refracted, part of the light is refracted out of the lens body through the multi-lobe area, and part of the light is refracted out of the lens body through the ring arc area. The light emitted through the lens of the present application has better uniformity and better light emitting angle, which can meet the use requirements of the lamp in different scenes. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 is a perspective view of the optical lens of the utility model.

[0015] Figure 2 Fig. 2 is another perspective view of the optical lens of the utility model.

[0016] Figure 3 Fig. 3 is a top view of the optical lens of the utility model.

[0017] Figure 4 Fig. 4 is a sectional view of the optical lens of the utility model.

[0018] Figure 5 Fig. 5 is a polar coordinate system light distribution curve diagram of the utility model.

[0019] Figure 6 Fig. 6 is a rectangular coordinate system light distribution curve diagram of the utility model.

[0020] Corresponding marks in the figure are as follows: 1-mounting surface, 11-step surface, 12-lamp bead placement site, 2-light outlet surface, 21-multi-lobe area, 211-arc lobe structure, 22-ring arc area, 23-central axis, 3-outer wall, 4-light inlet cavity. DETAILED DESCRIPTION

[0021] The utility model is further described below through specific embodiments.

[0022] Referring to Figures 1 to 4 As shown in the figure, the optical lens comprises a lens body, and the lens body is made of polycarbonate or acrylic.

[0023] The lens body comprises oppositely arranged mounting surfaces 1 and light-emitting surfaces 2, and the lens body is provided with a light inlet cavity 4 formed by the mounting surfaces 1. The light-emitting surfaces 2 comprise a multi-petal region 21 and a ring-arc region 22. The multi-petal region 21 has a plurality of arc petal structures 211, and the arc petal structures 211 are arranged in an annular array around a central axis 23. The arc petal structures 211 are of a structure in which the width decreases from the outside to the central axis 23. The arc petal structures 211 converge at a point on the central axis 23, and the converging point is in a recessed state. The number of the arc petal structures 211 is N, N is a natural number, and N≥6. In this embodiment, N is preferably 10. The ring-arc region 22 is arranged outside the multi-petal region 21 and is formed by an arc line surrounding the central axis 23 once. The radius of the outer edge of the multi-petal region 21 to the central axis 23 is r1, and the radius of the outer edge of the ring-arc region 22 to the central axis is r2. The relationship between r1 and r2 satisfies 0.2r2≤r1≤0.8r2.

[0024] An outer sidewall 3 is further formed between the mounting surfaces 1 and the light-emitting surfaces 2. The outer sidewall 3 is formed by vertically extending the ring-arc region 22 towards the mounting surfaces 1, and the outer sidewall 3 and the mounting surfaces 1 are provided with a texture. The mounting surfaces 1 are provided with a recessed step surface 11, and the step surface 11 is provided with a recessed lamp bead placement site 12. The light inlet cavity 4 is formed by opening the lamp bead placement site 12 towards the light-emitting surfaces 2.

[0025] The light inlet cavity 4 is formed in a taper structure that decreases from the mounting surfaces 1 to the light-emitting surfaces 2. The light inlet cavity 4 comprises a plurality of light inlet portions arranged in layers from the mounting surfaces 1 to the light-emitting surfaces 2. Each layer of the light inlet portions is formed by an annular array of curved surfaces around the central axis. The number of the curved surfaces in each layer of the light inlet portions is consistent. The number of the curved surfaces in each layer of the light inlet portions is M, M is a natural number, and M≥6.

[0026] The light distribution curve generated by the lens body is asymmetric. The peak angle of the light beam of the C0° / 180° cross section of the lens is 154°±5°, and the peak angle of the light beam of the C90° / 270° cross section is 152°±5°. The light distribution curve is narrow and elongated, and forms divergent light.

[0027] Figure 5 、 Figure 6 The figure is a test experimental data graph. The optical lens of the present application is installed on a 2835 or 3030 patch lamp bead, and the light distribution curve generated by the light-emitting of the lamp bead. Figure 5 The light distribution curve in the polar coordinate system. Figure 6is the light distribution curve of the rectangular coordinate system, which shows the divergent spatial light intensity distribution. The generated light distribution curve is asymmetric, the beam peak angle of C0° / 180° section is ±77°, the beam peak angle is about 154°, the light distribution curve is narrow and long; the beam peak angle of C90° / 270° section is ±76°, the beam peak angle is about 152°, the light distribution curve is narrow and long.

[0028] The above is only one specific embodiment of the present application, but the design concept of the present application is not limited thereto, and any non-substantial modification of the present application using this concept shall be deemed as an infringement of the protection scope of the present application.

Claims

1. An optical lens characterized in that: The lens body comprises oppositely arranged mounting surface and light emitting surface, and the lens body is provided with a light inlet cavity formed by the mounting surface, wherein the light emitting surface comprises a multi-lobe area and a ring-arc area, the multi-lobe area has a plurality of arc lobe structures, each arc lobe structure is arranged in an annular array around a central axis, the arc lobe structure has a width decreasing structure from the outside to the central axis, each arc lobe structure converges at a point at the central axis, and the convergence point is in a concave state, and the ring-arc area is arranged outside the multi-lobe area and formed by an arc line around the central axis.

2. The optical lens of claim 1, wherein: The radius of the outer edge of the multi-lobe area to the central axis is r1, and the radius of the outer edge of the ring-arc area to the central axis is r2, wherein the relationship between r1 and r2 satisfies 0.2r2≤r1≤0.8r2.

3. The optical lens of claim 1, wherein: An outer side wall is further formed between the mounting surface and the light emitting surface, and the outer side wall is formed by vertically extending the ring-arc area towards the mounting surface.

4. The optical lens of claim 3, wherein: The outer side wall and the mounting surface are provided with a sunken texture.

5. The optical lens of claim 1, wherein: The number of the arc lobe structures is N, N is a natural number, and N≥6.

6. The optical lens of claim 1, wherein: The mounting surface is provided with a recessed step surface, the step surface is provided with a recessed lamp bead placement site, and the light inlet cavity is formed by opening the lamp bead placement site towards the light emitting surface.

7. The optical lens of claim 1, wherein: The light inlet cavity has a taper structure from the mounting surface to the light emitting surface, and the light inlet cavity comprises a plurality of light inlet parts in the mounting surface to the light emitting surface direction, each light inlet part is formed by an array of curved surfaces around the central axis, the number of the curved surfaces in each light inlet part is consistent, the number of the curved surfaces in each light inlet part array is M, M is a natural number, and M≥6.

8. The optical lens of claim 1, wherein: The lens body material is one of polycarbonate and acrylic.

9. The optical lens of claim 1, wherein: The light distribution curve of the lens body is asymmetric, the beam peak angle of the C0° / 180° cross section of the lens is 154°±5°, the beam peak angle of the C90° / 270° cross section is 152°±5°, the light distribution curve is narrow and elongated, and the lens forms divergent light.

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