A beam splitting lens, a full-circle luminous lamp and a working method thereof

Abstract

The present invention discloses a spectroscopic lens, a full-circle luminous lamp and a working method thereof. The spectroscopic lens is in a cylindrical structure, a light incident surface is provided at the first end of the spectroscopic lens, a reflective arc surface is provided at the second end which is recessed into the inside of the spectroscopic lens, the light incident surface and the reflective arc surface are connected via a circumferential light emitting surface, the light source is provided on one side of the light incident surface of the spectroscopic lens, so that the light emitted by the light source enters the spectroscopic lens through the light incident surface and is reflected by the reflective arc surface and then emitted along the circumferential light emitting surface; in the full-circle luminous lamp of the present invention, due to the existence of the reflective arc surface, the light emitted by the light source will not irradiate the area above the reflective arc surface, the light after being split by the spectroscopic lens is emitted 360 degrees around the cylindrical spectroscopic lens and forms a uniform annular light spot around it, and when the human eye observes within the angle range covered above the reflective arc surface, glare is not easily generated, the light intensity distribution in the halo area is uniform, and the atmosphere is comfortable.

Description

Technical Field

[0001] The present invention belongs to the technical field of lamps, and in particular, relates to a light splitting lens, a full-circle luminous lamp and a working method thereof. Background Art

[0002] With the evolution and changes of human society, humans have a demand for indoor lighting after living in caves. In modern society, people have a systematic development of indoor lighting, from single-lamp lighting to gradually adding key lighting, special lighting and atmosphere lighting design. Atmosphere lighting is widely used and is commonly seen in theme parks, hotels, homes, exhibitions, commercial and artistic lighting.

[0003] For ambient lighting lamps, most of them add a simple lens to the traditional LED light source as the design basis, and most of them adopt single-sided light emission, with simple optical characteristics, which is not conducive to the ambient lighting needs around the lamp environment.

[0004] The invention patent application with application number 201410346180.9 discloses an "all-around LED lamp". This solution realizes all-around lighting. However, in the lens of the LED, the reflective surface reflects a part of the light. However, in fact, since the contour of the reflective surface is convex to the opposite side of the lens entity, the reflective surface has a focusing effect on the reflected light, which is not conducive to the uniformity of the light illumination below the lens side. In addition, since another part of the light on the reflective surface is refracted and projected above the reflective surface, in fact, there is also a large amount of light above the lens, thereby generating an inappropriate brightness distribution in all directions in space. When observing from above the lens, it is easy to generate glare in the human field of vision, which may cause people to feel disgusted, uncomfortable or even lose their vision. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a full-circle luminous lamp with uniform illumination and capable of reducing the generation of glare.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A beam splitter lens is provided, the beam splitter lens is in a cylindrical structure, a light incident surface is provided at the first end of the beam splitter lens, a reflective arc surface is provided at the second end of the beam splitter lens which is recessed into the inside of the beam splitter lens, and the light incident surface and the reflective arc surface are connected via a circumferential light emitting surface.

[0008] Furthermore, the light incident surface is a concave curved surface provided at the first end of the beam splitter lens, and a curved surface profile of the light incident surface is convex toward a side opposite to the beam splitter lens entity.

[0009] Furthermore, the arc-shaped profile on the reflective arc surface is concave toward one side of the beam splitting lens entity.

[0010] A full-circle luminous lamp comprises a splitter lens and a light source, wherein the light source is arranged on one side of the light incident surface of the splitter lens, so that the light emitted by the light source enters the splitter lens through the light incident surface and is reflected by the reflection arc surface and then emitted along the circumferential light emitting surface.

[0011] Furthermore, the all-round luminous lamp also includes an anti-glare lens, which includes a plurality of anti-glare rings with colinear central axes, and the plurality of anti-glare rings are stacked up and down in sequence and are sleeved on the circumferential light-emitting surface of the splitter lens. In any two adjacent groups of anti-glare rings, the upper anti-glare ring is connected to the lower anti-glare ring and a light-absorbing structure is provided on the contact surface.

[0012] Furthermore, a light guide lens is provided between the light source and the beam splitter lens, the light source is provided at one end of the light incident surface of the light guide lens, and the beam splitter lens is provided at one end of the light emitting surface of the light guide lens, so that the light emitted by the light source is converged on the light incident surface of the beam splitter lens through the light guide column.

[0013] Furthermore, the light guide lens includes a light guide column and a convex lens arranged on the light emitting surface of the light guide column, the light source is arranged at one end of the light incident surface of the light guide column, and the beam splitting lens is arranged at one end of the light emitting surface of the convex lens.

[0014] Furthermore, the convex lens is an annular convex lens with a concave middle portion of the light emitting surface.

[0015] Furthermore, a plurality of light mixing microstructures are provided on the light emitting surface of the convex lens.

[0016] Furthermore, the light mixing microstructure is a micro convex lens structure arranged on the light emitting surface of the convex lens.

[0017] Furthermore, the inner diameter of the anti-glare ring matches the outer diameter of the circumferential light-emitting surface of the beam splitter lens.

[0018] Furthermore, the all-around luminous lamp also includes an outer cover, the light source is placed inside the outer cover, and the anti-glare lens is arranged above the light source.

[0019] A working method of a full-circle luminous lamp: light emitted by a light source converges on a reflective arc surface of a beam splitter lens through a light incident surface, and the reflective arc surface scatters the light and emits it along a circumferential light exit surface of the beam splitter lens.

[0020] The light emitted through the circular light-emitting surface enters the anti-glare lens, the first part of the light is refracted in the anti-glare lens and emitted along the four sides of the anti-glare lens, and the second part of the light enters the light-absorbing structure of the anti-glare lens and is absorbed. At this time, the anti-glare lens converges the first part of the light to the same side of the light-absorbing structure.

[0021] The beneficial effects of the present invention are as follows: in the full-circle luminous lamp of the present invention, the light emitted by the light source is first split for the first time through the light incident surface of the splitter lens and irradiated into the splitter lens, and then split for the second time through the reflection arc surface and produces total reflection. Since the reflection arc surface is a wide-angle mirror surface, the light is diverged and evenly incident on the circular light-emitting surface. The light on the circular light-emitting surface is emitted along the circular light-emitting surface arranged between the light incident surface and the reflection arc surface; due to the existence of the reflection arc surface, the light emitted by the light source will not irradiate the area above the transmission arc surface. When the human eye observes within the angle range covered above the reflection arc surface, it is not easy to form glare in the area above the reflection arc surface; the light after splitting by the splitter lens is emitted 360 degrees around the cylindrical splitter lens and forms an annular light spot around it, and the illumination distribution in the light spot area is uniform, and the atmosphere is comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the all-around luminous lamp of the present invention;

[0023] Figure 2 A perspective view of an optical lens assembly of the full-circle luminous lamp of the present invention;

[0024] Figure 3 A three-dimensional diagram of the light guide lens of the full-circle luminous lamp of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the light splitting lens of the omni-directional light emitting lamp of the present invention;

[0026] Figure 5 It is a schematic diagram of the anti-glare lens structure of the all-around luminous lamp of the present invention;

[0027] Figure 6 This is a light principle analysis diagram of the omni-luminous lamp of the present invention;

[0028] Figure 7 The light distribution curve diagram of the omni-directional luminaire of the present invention;

[0029] Figure 8 This is a schematic diagram of the illuminance distribution of the omni-luminous lamp of the present invention;

[0030] Icon: 1-outer cover, 2-light-guiding lens, 21-light-entering surface of light-guiding lens, 22-light-guiding column, 23-convex lens, 24-light-exiting surface of convex lens, 25-light-mixing microstructure, 3-beam-splitting lens, 31-light-entering surface, 32-reflective arc surface, 33-circular light-exiting surface, 34-light-entering port of beam-splitting lens, 4-anti-glare lens, 41-light-absorbing structure, 42-anti-glare ring, 43-lens cavity, 5-light source, 6-cavity. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0032] like Figure 1-8 As shown, an all-around luminous lamp can be used for special lighting or atmosphere lighting, and the structure includes an outer cover 1, a light guide lens 2, a splitter lens 3, an anti-glare lens 4 and a light source 5.

[0033] The outer cover 1 is used to install and fix the optical lens and light source 5 and other components in the lamp, and can be made of non-transparent plastic or metal, such as Figure 1 As shown, in this embodiment, the outer cover 1 is a group of cylindrical components erected vertically, and the light source 5 is installed in the outer cover 1 .

[0034] like Figure 2-3 As shown, the light guide lens 2 includes a light guide column 22 and a convex lens 23. The function of the light guide lens 2 is to conduct the light emitted by the light source 5 and has both light guiding and color mixing functions. Therefore, the light source 5 is arranged at one end of the light incident surface of the light guide column 22, that is, on the side of the light incident surface 21 of the light guide lens. The light guide column 22 is a quadrangular pyramid structure, and its light incident surface is an end surface with a smaller profile on the quadrangular pyramid. The convex lens 23 is arranged on an end surface with a larger profile on the quadrangular pyramid-shaped light guide column 22, that is: Figure 2-3 As shown, the light incident surface of the convex lens 23 is connected to the light emitting surface of the light guide column 22, and a recessed structure is provided in the middle of the light emitting surface 24 of the convex lens. Therefore, the convex lens 23 is a ring-shaped convex lens, and a plurality of light mixing microstructures 25 are provided on the light emitting surface 24 of the convex lens. In the present embodiment, the micro-light mixing structure 25 is a micro-convex lens structure provided on the light emitting surface of the convex lens 23. The light source 5 emits light along the light incident surface 21 of the light guide lens and enters the light guide column 22. After the light is mixed on the plane of the light incident surface 21 of the light guide lens, it is reflected multiple times in the light guide column 22, and enters the convex lens 23 for conduction and mixing, and finally is mixed again by the plurality of light mixing microstructures 25 and emitted.

[0035] like Figure 1 and Figure 4 As shown, the beam splitter lens 3 has a cylindrical structure, the first end face of the beam splitter lens 3 is a light incident surface 31, the second end face is a reflective arc surface 32, the light incident surface 31 and the reflective arc surface 32 are connected via a circumferential light emitting surface 33 of the beam splitter lens 3, a beam splitter lens light inlet 34 is further provided on one side of the light incident surface 31 of the beam splitter lens 3, a reflective film layer is coated on the reflective arc surface 32 to form a total reflection mirror surface, so that the light incident on the reflective arc surface 32 cannot penetrate the reflective arc surface 32, and therefore no light enters above the reflective arc surface 32.

[0036] The light incident surface 31 is concave in the beam splitter lens 3 and the concave surface formed is convex, that is: Figure 4As shown, in the cross-sectional state of the beam splitter lens 3, the contour curve on the light incident surface 31 is convex to the side opposite to the beam splitter lens 3, and the effect produced is as follows: Figure 6 As shown, the light entering through the light incident surface 31 is more likely to be refracted onto the reflective arc surface 32 .

[0037] The reflective arc surface 32 is concave at the second end of the beam splitter lens 3, forming a convex mirror effect inside the beam splitter lens 3 (that is, the side of the reflective arc surface 32 facing the inside of the beam splitter lens 3 is a wide-angle mirror surface). Specifically, when the beam splitter lens 3 is in a cross-sectional state, the contour curve of the reflective arc surface 32 is concave toward the solid side of the beam splitter lens 3, and the light converged onto the reflective arc surface 32 through the light incident surface 31 is more easily reflected divergently by the reflective arc surface 32, and then evenly illuminated on the circumferential light output surface 33.

[0038] The outer circumference of the convex lens 23 of the light guide lens 2 matches the outline of the light inlet 34. The effect after assembly is shown in the figure below. Figure 2 As shown, a cavity 6 is formed between the light incident surface 31 of the beam splitter lens 3 and the convex lens 23. The light emitted along the light mixing microstructure 5 is projected onto the light incident surface 31 of the beam splitter lens 3. A part of the light is emitted along the circumferential light emitting surface 33, and the other part is emitted onto the reflecting arc surface 32 after the first light splitting by the light incident surface 31. Since the reflecting arc surface 32 is provided with a reflective coating, the reflecting arc surface 32 forms a total reflection surface. The light incident on the reflecting arc surface 32 is totally reflected after the second light splitting and enters the circumferential light emitting surface 33. Finally, the light incident along the light incident surface 31 of the beam splitter lens 3 is emitted along the circumferential light emitting surface 33 as a whole. Due to the existence of the reflecting arc surface 32, the light in the beam splitter lens 3 is reflected downward along the reflecting arc surface 32. When a person observes the area above the reflecting arc surface 32, glare is not easily generated because there is no incident light.

[0039] like Figure 2 and Figure 5 As shown, the anti-glare lens 4 includes a plurality of anti-glare rings 42 whose central axes are colinear, and the plurality of anti-glare rings 42 are sequentially stacked up and down to form a group of anti-glare lenses 4, so that a group of annular lens cavities 43 are formed in the anti-glare lens 4, and the lens cavities 43 are covered on the cylindrical surface of the splitter lens 3, and the inner circumferential surface of each group of anti-glare rings 42 is tightly matched with the circumferential light-emitting surface 33 of the splitter lens 3, so that all the light emitted along the circumferential light-emitting surface 33 of the splitter lens 3 enters the anti-glare lens 4, and in any two adjacent groups of anti-glare rings 42 above and below, the upper anti-glare ring 42 is connected to the lower anti-glare ring 42 and a light-absorbing structure 41 is provided on the contact surface, that is, in this embodiment, the contact surfaces of the two adjacent groups of anti-glare rings 42 are plated with a light-absorbing film, and the light-absorbing film can adopt the existing technology, such as the light-absorbing film in the invention patent with application number CN201711457122.3, and the light incident on the light-absorbing structure 41 is absorbed by the light-absorbing structure 41.

[0040] like Figure 5 As shown, the profile of any cross section of the anti-glare ring 42 is a parallelogram, and when viewed from the inner circumference side to the outer circumference side of the anti-glare ring 42, the upper and lower end surfaces of the anti-glare ring 42 are inclined downward, and an inclined surface is formed between the inner circumference side and the outer circumference side, and the inclined surface is the contact surface between two adjacent groups of anti-glare rings 42. Since the surface is coated with a light-absorbing film layer, Figure 6 As shown, after a part of the light enters the anti-glare ring 42, it is refracted inside the anti-glare ring 42 and is emitted obliquely downward along the outer circumferential surface of the anti-glare ring 42, and the other part of the light is irradiated on the light-absorbing film layer and absorbed. The purpose of the anti-glare ring 42 is to converge the light in the spectroscopic lens 3 to the same side of the light-absorbing structure 41, that is, below the surrounding sides of the anti-glare lens 4, thereby further enhancing the anti-glare effect of the spectroscopic lens 3.

[0041] The light source 5 is an RGBW full-color spectrum LED light source, and a control panel is provided on the light source. By adjusting the control panel of the light source 5, the light source 5 can generate white and colored light, thereby providing conditions for the free combination of light, and can achieve stepless color adjustment and temperature control. Red light, green light, blue light, white light of different color temperatures, etc. can be emitted separately, so that the colors of the light emitted by the light source 5 are different. The colored light emitted by the light source 5 is mixed and mixed by the light guide lens 2 to form a group of white light with uniform color.

[0042] like Figure 6 As shown, the light source 5 is placed in the outer cover 1, the light guide lens 2 is vertically arranged, and the splitter lens 3 and the anti-glare lens 4 are arranged at the upper end of the light output surface of the light guide lens 2. After the light is mixed multiple times by the light guide lens 2, it converges to the light incident surface 31 of the splitter lens 3, and finally emits obliquely downward along the outer circumferential surface of the anti-glare ring 42.

[0043] like Figure 1 As shown, since the light is inclined downward after being emitted from the anti-glare lens 4, the optical path of the emitted light changes. Due to the blocking of the light-absorbing film layer on the anti-glare lens 4, there is no glare in the area α where anti-glare is required, the light distribution in the irradiated area β is more uniform, and no light is generated in the dark area γ. By setting the inclination angles of the upper and lower end surfaces of the anti-glare ring 42, that is, the inclination angle of the film layer, the coverage area ranges of α, β and γ can be adjusted and optimized. In this embodiment, the final angles of α, β and γ are about 120°, 50° and 10° respectively, which ultimately reduces the range of our dark area γ to the minimum range, and finally forms the following on the projection surface. Figure 8 The uniform annular light spot, the measured light distribution curve is as follows Figure 7 As shown, the illuminance and chromaticity of the illuminated area are evenly distributed, forming a group of all-round luminous light beams around the lamp.

[0044] The above-mentioned full-circle luminous lamp adopts an optical lens combination structure, and the outer cover 1 is designed in a long axis shape, which is simple and elegant, occupies a small area, has a large aperture range coverage area, a small dark area range and does not produce glare.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An omnidirectional luminaire, comprising a beam splitting lens (3) and a light source (5), characterized in that: The beam splitter lens (3) has a cylindrical structure, and a light incident surface (31) is provided at the first end of the beam splitter lens (3); a reflective arc surface (32) recessed toward the inside of the beam splitter lens (3) is provided at the second end of the beam splitter lens (3); the light incident surface (31) and the reflective arc surface (32) are connected via a circumferential light emitting surface (33); The light incident surface (31) is a concave curved surface provided at the first end of the beam splitter lens (3), and the curved surface profile of the light incident surface (31) is convex toward the side opposite to the beam splitter lens (3) entity; the curved profile on the reflective curved surface (32) is concave toward the side of the beam splitter lens (3) entity, and the reflective curved surface (32) is a total reflection curved surface so that light cannot be transmitted; The light source (5) is arranged on one side of the light incident surface (31) of the beam splitter lens (3), so that light emitted by the light source (5) enters the beam splitter lens (3) through the light incident surface (31) and is reflected by the reflection arc surface (32) before being emitted along the circumferential light exit surface (33); A light guide lens (2) is further provided between the light source (5) and the light splitting lens (3); the light source (5) is provided at one end of the light incident surface of the light guide lens (2), and the light splitting lens (3) is provided at one end of the light emitting surface of the light guide lens (2), so that light emitted by the light source (5) converges on the light incident surface (31) of the light splitting lens (3) through the light guide column (22); The light guide lens (2) comprises a light guide column (22) and a convex lens (23) arranged on the light exit surface of the light guide column (22); the light source (5) is arranged at one end of the light incident surface of the light guide column (22); and the beam splitting lens (3) is arranged at one end of the light exit surface of the convex lens (23); The light source (5) emits light that enters the light guide column (22) along the light entrance surface (21) of the light guide lens, is mixed by the light entrance surface (21) of the light guide lens, is reflected in the light guide column (22), and enters the convex lens (23) for conduction and mixing.

2. The all-around luminaire according to claim 1, characterized in that: The full-circle luminous lamp also includes an anti-glare lens (4), and the anti-glare lens (4) includes a plurality of anti-glare rings (42) whose central axes are colinear. The plurality of anti-glare rings (42) are sequentially stacked up and down and sleeved on the circumferential light-emitting surface (33) of the splitter lens (3). In any two adjacent groups of anti-glare rings (42), the anti-glare rings (42) on the upper and lower sides are connected and a light-absorbing structure (41) is provided on the contact surface.

3. The all-around luminous lamp according to claim 1, characterized in that: The convex lens (23) is an annular convex lens with a concave middle portion of the light emitting surface.

4. The all-around luminous lamp according to claim 3, characterized in that: The light-emitting surface of the convex lens (23) is provided with a plurality of light-mixing microstructures (25).

5. The all-around luminous lamp according to claim 4, characterized in that: The light mixing microstructure (25) is a micro-convex lens structure arranged on the light emitting surface of the convex lens (23).

6. A method for operating the omnidirectional luminaire according to claim 2, characterized in that: The light source (5) emits light which converges on the reflective arc surface (32) of the beam splitter lens (3) through the light incident surface (31). The reflective arc surface (32) scatters the light and emits the light along the circumferential light exit surface (33) of the beam splitter lens (3).

7. The operating method of the omnidirectional luminaire according to claim 6, characterized in that: Light is emitted from the circumferential light-emitting surface (33) and enters the anti-glare lens (4); a first portion of the light is refracted in the anti-glare lens (4) and emitted along the periphery of the anti-glare lens (4); a second portion of the light is emitted into the light-absorbing structure (41) of the anti-glare lens (4) and absorbed, so that the anti-glare lens (4) converges the first portion of the light to the same side of the light-absorbing structure (41).

Images