Lens capable of rotatably adjusting light distribution type

Abstract

The utility model discloses a lens capable of rotatably adjusting light distribution types, which belongs to the technical field of lenses and comprises a lens body, the lens body is provided with a plurality of first lens groups and second lens groups which are arranged in an annular array, the first lens groups and the second lens groups are alternately arranged, the first lens groups comprise a plurality of symmetrical lenses, and the second lens groups comprise a plurality of symmetrical lenses. The second lens group comprises a plurality of spreadlight lenses. The lens body is provided with the first lens groups and the second lens groups which are arranged in the annular array, the first lens groups and the second lens groups are alternately arranged, each first lens group comprises a plurality of symmetrical lenses, and each second lens group comprises a plurality of spreadlight lenses. Switching between a symmetrical light type and a polarized light type can be achieved, and switching of light emitting angles is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lenses, and in particular relates to a lens of a rotation-adjustable light distribution type. Background Art

[0002] With the development of the lighting market, people's demand for lamps is increasing day by day, and lamps with a single angle can no longer meet people's daily lighting needs. Currently, the market mainly uses the following two methods to achieve the angle adjustment of industrial and mining lamps:

[0003] One is to adjust the angle by changing the distance between the lens and the light source and adjusting the focal length of the lens. However, this method will cause changes in optical efficiency after adjusting the focal length, resulting in a loss of luminous flux.

[0004] The second method is to adjust the angle by adjusting the relative position of the two layers of lenses and changing the optical path. However, this method requires passing through two layers of optical structure, resulting in a large loss of light flux.

[0005] Currently, most point lens products of industrial and mining lamps have a one-to-one match between the light source and the lens, and the angle adjustment is mostly from one symmetrical light type to another symmetrical light type.

[0006] Therefore, there is an urgent need for a lens that can rotate and adjust the light distribution. Utility Model Content

[0007] In order to solve the problems raised in the above background technology, the utility model provides a lens of a rotation-adjustable light distribution type, which has the characteristic of being able to achieve angle change by rotating the lens.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a lens of a rotationally adjustable light distribution type, comprising a lens body, on which a plurality of first lens groups and second lens groups in an annular array are arranged, the first lens groups and the second lens groups are arranged alternately, wherein the first lens group comprises a plurality of symmetrical lenses, and the second lens group comprises a plurality of polarized lenses.

[0009] Furthermore, both the symmetrical lens and the polarized lens are formed by stretching a free-form surface lens.

[0010] Furthermore, a plurality of symmetrical lenses are radially distributed on the lens body.

[0011] Furthermore, a plurality of polarized lenses are radially distributed on the lens body.

[0012] Furthermore, the included angle between the adjacent first lens group and the second lens group is 7.5°.

[0013] In order to reasonably utilize the space of the lens body and improve the space utilization rate, further, the diameters of the plurality of symmetrical lenses increase sequentially from the center of the lens body to the outside. The diameters of the plurality of polarized lenses increase sequentially from the center of the lens body to the outside.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The lens body of the utility model is provided with a plurality of first lens groups and second lens groups in an annular array, the first lens groups and the second lens groups are arranged alternately, the first lens group includes a plurality of symmetrical lenses, and the second lens group includes a plurality of polarized lenses. By rotating the lens body, the switching between the symmetrical light type and the polarized light type can be realized, and the switching of the light output angle can be realized;

[0016] 2. The diameters of the several symmetrical lenses of the utility model increase from the center of the lens body to the outside, and the diameters of the several polarized lenses increase from the center of the lens body to the outside, so as to reasonably utilize the space of the lens body and improve the space utilization rate;

[0017] 3. The symmetrical lens and polarized lens of the utility model both adopt a dot lens structure, which constrains scattered light outside the 120° light cone angle, reduces the UGR of the entire lamp, and has better anti-glare ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the light source board corresponding to the utility model;

[0021] Figure 3 A light pattern diagram of a symmetrical light pattern of the utility model;

[0022] Figure 4 This is the light pattern diagram of the polarized light type of the utility model;

[0023] In the figure: 1. lens body; 2. first lens group; 3. second lens group; 4. light source board; 5. lamp bead group. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] See also Figure 1 The utility model provides the following technical solution: a rotationally adjustable light distribution type lens, comprising a lens body 1, on which a plurality of first lens groups 2 and second lens groups 3 in an annular array are arranged, the first lens groups 2 and the second lens groups 3 are alternately arranged, wherein the first lens group 2 comprises a plurality of symmetrical lenses, which are radially distributed on the lens body 1, the second lens group 3 comprises a plurality of polarized lenses, which are radially distributed on the lens body 1, and the symmetrical lenses and the polarized lenses are both formed by stretching free-form surface lenses.

[0027] By adopting the above technical solution, by rotating the lens body 1, it is possible to switch between the symmetrical light type and the polarized light type, thereby achieving the switching of the light output angle.

[0028] Specifically, the included angle between the adjacent first lens group 2 and the adjacent second lens group 3 is 7.5°.

[0029] Example 2

[0030] The difference between this embodiment and Embodiment 1 is that the diameters of the plurality of symmetrical lenses increase sequentially from the center of the lens body 1 toward the outside, and the diameters of the plurality of polarized lenses increase sequentially from the center of the lens body 1 toward the outside.

[0031] By adopting the above technical solution, the space of the lens body 1 is reasonably utilized and the space utilization rate is improved.

[0032] Example 3

[0033] like Figure 2 As shown, a light source board 4 corresponding to the present invention is provided with a plurality of lamp bead groups 5 in a circular array, and the angle between adjacent lamp bead groups 5 is 15°.

[0034] Furthermore, the lamp bead group 5 includes a plurality of lamp beads distributed radially, and the number of the lamp beads increases from the center of the light source plate 4 toward the outside corresponding to the area of ​​the symmetrical lens or the polarized lens.

[0035] By adopting the above technical solution, the space of the light source board 4 is reasonably utilized, thereby improving the space utilization rate.

[0036] In summary, a lens body 1 of the utility model is provided with a plurality of first lens groups 2 and second lens groups 3 in a ring array, the first lens group 2 and the second lens group 3 are alternately arranged, the first lens group 2 includes a plurality of symmetrical lenses, and the second lens group 3 includes a plurality of polarized lenses. By rotating the lens body 1, the symmetrical light type and the polarized light type can be switched, and the light output angle can be switched. The diameters of the plurality of symmetrical lenses of the utility model increase sequentially from the center of the lens body 1 toward the outside, and the diameters of the plurality of polarized lenses increase sequentially from the center of the lens body 1 toward the outside, so that the space of the lens body 1 is reasonably utilized and the space utilization rate is improved. Both the symmetrical lenses and the polarized lenses of the utility model adopt a point lens structure, which constrains scattered light outside the 120° light cone angle, reduces the UGR of the whole lamp, and has better anti-glare ability.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lens of a rotationally adjustable light distribution type, characterized in that: The lens body comprises a lens body, on which a plurality of first lens groups and second lens groups in an annular array are arranged, the first lens groups and the second lens groups are arranged alternately, wherein the first lens group comprises a plurality of symmetrical lenses, and the second lens group comprises a plurality of polarized lenses.

2. A lens of a rotationally adjustable light distribution type according to claim 1, characterized in that: The symmetrical lens and the polarized lens are both formed by stretching a free-form surface lens.

3. The lens of the rotation-adjustable light distribution type according to claim 1, characterized in that: A plurality of symmetrical lenses are radially distributed on the lens body.

4. The lens of the rotation-adjustable light distribution type according to claim 1, characterized in that: A plurality of polarizing lenses are radially distributed on the lens body.

5. The lens of the rotation-adjustable light distribution type according to claim 1, characterized in that: The included angle between the adjacent first lens group and the adjacent second lens group is 7.5°.

6. The lens of the rotation-adjustable light distribution type according to claim 1, characterized in that: The diameters of the plurality of symmetrical lenses increase sequentially from the center of the lens body toward the outside.

7. The lens of the rotation-adjustable light distribution type according to claim 1, characterized in that: The diameters of the plurality of polarized lenses increase in sequence from the center of the lens body toward the outside.

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