CN212644487U - Lens, light distribution assembly and lamp - Google Patents

Abstract

The application is suitable for the technical field of lighting and illumination, and provides a lens, a light distribution assembly and a lamp. The lens comprises a light-gathering part and a refraction part which is arranged around the periphery of the light-gathering part and extends to one side of the light-gathering part; the peripheral wall of the refraction part is provided with a plurality of refraction surfaces arranged at intervals, each refraction surface is a surface with light diffusion or/and filtering functions, and each refraction surface is arranged around the refraction part. The light passing through the light-gathering part can be used for directional illumination or pattern projection, the light passing through the light-refracting part can be deflected to the radial direction of the optical axis, the light is projected to the outer side of the light-refracting part, and atmosphere illumination is formed at a preset angle; by arranging the plurality of refracting surfaces at intervals, the conditions that light spots or light ring areas formed by the lenses are too small and the brightness is too concentrated are avoided, the lighting effect is softer, and the glare effect is avoided; and have various illumination function and multiple illuminating effect, the user need not to dispose a plurality of lamps and lanterns for realizing multiple illumination function, has reduced the illumination cost.

Description

Lens, light distribution assembly and lamp

Technical Field

The application relates to the technical field of lighting and illumination, in particular to a lens, a light distribution assembly and a lamp.

Background

With the continuous maturation and development of lighting technology, various light sources are widely applied in the fields of lighting, industry and the like. The original distribution of the light spots of the conventional light source generally conforms to the simulation of a Lambert-type light source, in the using process of the conventional light source, the spatial distribution characteristics of light intensity to be realized can be determined according to specific use conditions, such as the specific required lighting effect, the specific required use situation and the like of the light source, and a light distribution lens is arranged in the direction of light projected by the light source, so that the secondary light distribution design is carried out on the light source. In recent years, the standard of living of the public has been increasing, and lamps and lanterns have been provided with functions such as creating an atmosphere in addition to a lighting function. In leisure and entertainment places such as special festivals or restaurants, bars and the like, consumers also want to install a projection lamp or other lamps which can be used for projection on a desktop or a ceiling so as to project a specific pattern on a wall surface, a ceiling or the ground to create an atmosphere.

In the traditional scheme, a projection lamp or other lamps capable of being used for projection achieve the projection effect by arranging a hollowed-out projection film or drawing a projection film forming a pattern on a light path; the lighting effect of these luminaires is still directional in nature, and if these luminaires are used as atmosphere lamps and to provide illumination capable of setting out the atmosphere, there is the problem that the illumination brightness is too high and difficult to control. In order to obtain richer lighting effects, additional lighting equipment is often required in restaurants, bars, or other occasions, resulting in increased lighting costs.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a lens, and aims to solve the technical problems that the traditional lamp is too high in illumination brightness and difficult to control and cannot be used for atmosphere illumination.

The lens comprises a light-gathering part and a light refracting part which is arranged around the periphery of the light-gathering part and extends towards one side of the light-gathering part; the light refraction part is characterized in that a plurality of light refraction surfaces arranged at intervals are arranged on the peripheral wall of the light refraction part, each light refraction surface is a surface with light diffusion or/and light filtering functions, and each light refraction surface is arranged around the light refraction part.

In an embodiment of the present application, each refraction surface is connected to a light-isolating surface, and each light-isolating surface and each refraction surface are alternately arranged in sequence.

In one embodiment of the present application, the light-gathering portion includes an optical axis, and the light-refracting surface and the light-blocking surface are connected to form a first sawtooth structure; the first sawtooth structures are arranged back to the optical axis, each first sawtooth structure is annular, the axis of each annular first sawtooth structure is superposed with the optical axis, the light isolating surface is arranged back to the light gathering portion, and the light refracting portion further comprises a light incident surface opposite to the optical axis; the refraction surface is an arc surface, is arranged at an interval with the light-gathering part, and is positioned at the position where the extension part of the refraction part is opposite to the light emitted by the light source at one side of the light-gathering part, and the light can sequentially pass through the light-entering surface and the refraction surface and is deflected in the direction deviating from the light-gathering part.

In an embodiment of the present application, the light-blocking surface is a conical surface, and light emitted by the light source can be refracted by the light-incident surface and then transmitted along a direction of a bus of the conical surface where the light-blocking surface is located; or/and the light is transmitted along the direction far away from the generatrix of the conical surface of the light isolating surface.

In one embodiment of the application, one end of the refractive part far away from the light-gathering part is connected with a light distribution assembly or other spare and accessory parts of a lamp.

Another object of the present application is to provide a light distribution assembly including the lens as described above, further including a lamp cover, the lamp cover including an imaging mirror portion and a cover body portion disposed around a periphery of the imaging mirror portion; the imaging mirror portion with the condensing portion is with the optical axis setting, the imaging mirror portion with cover somatic part encloses to close and forms the holding tank, lens set up in the holding tank, just the condensing portion is kept away from one side of refraction portion extension with the imaging mirror portion is relative.

In one embodiment of the present application, a surface of the imaging lens portion opposite to the light condensing portion is an arc surface or a fresnel surface; one surface of the light-gathering part, which is back to the imaging lens part, is an arc surface or a Fresnel pattern surface.

In one embodiment of the present application, a side of the light-collecting part facing the imaging mirror part is a plane or a spherical surface.

In one embodiment of the application, the inner side surface of the accommodating groove is provided with a first concave-convex surface circumferentially arranged along the inner wall of the accommodating groove; the outer peripheral wall of the cover body part is provided with a second concave-convex surface arranged along the circumferential direction of the outer peripheral wall of the cover body part, and the first concave-convex surface and the second concave-convex surface are used for regularly diffusing light beams; when the refraction surface is a surface with a light diffusion function, the diffusion direction of light emitted by the light source when the light is emitted through the refraction part is crossed with the diffusion direction of the light when the light is emitted through the second concave-convex surface.

It is a further object of the present application to provide a luminaire including a lens as described above, or a light distribution assembly as described above.

The implementation of the lens provided by any embodiment of the application has at least the following beneficial effects:

the lens provided by each embodiment of the application can divide light rays emitted by a light source which is arranged on an optical axis and is arranged at one end, far away from the light-gathering part, of the light-gathering part into two parts through the light-gathering part and the light-refracting part connected with the light-gathering part, partial light rays passing through the light-gathering part can be used for directional illumination or pattern projection, and partial light rays passing through the light-refracting part can be deflected to the radial direction of the optical axis, so that the illumination direction of the light rays is changed, the light rays are projected to the outer side of the light-refracting part, atmosphere illumination is formed in a preset angle range, and the lens is very suitable for illumination scenes such as atmosphere illumination of bar; by arranging the plurality of refracting surfaces at intervals, the conditions that light spots or light ring areas formed by the lens are too small and the brightness is too concentrated can be avoided, so that the illumination effect is softer, and the glare effect caused by sudden change of the illumination brightness is avoided; and have various illumination function and multiple illuminating effect, the user need not to dispose a plurality of lamps and lanterns for realizing multiple illumination function, has reduced the illumination cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a lens configuration provided by one embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a lens provided by an embodiment of the present application;

FIG. 3 is a schematic view of the refraction principle of a lens provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a lamp provided by an embodiment of the present application;

fig. 5 is a schematic cross-sectional view of a lamp provided in an embodiment of the present application.

Reference numerals referred to in the above figures are detailed below:

1-a lens; 10-optical axis; 11-a light-condensing portion; 12-a refractive portion; 121-a light incident surface; 122-a first saw tooth structure; 1221-a refracting surface; 1222-light isolation surface; 13-a connecting part; 131-a through hole; 2-lamp shade; 21-an imaging mirror part; 22-a mask body portion; 221-a first concave-convex surface; 222-a second concave-convex surface; 3-light source.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

In order to explain the technical solutions of the present application, the following detailed descriptions are made with reference to specific drawings and examples.

Referring to fig. 1 to 3, an embodiment of the present application provides a lens 1, including a light-collecting portion 11, and a refractive portion 12 disposed around a periphery of the light-collecting portion 11 and extending to one side of the light-collecting portion 11; the condensing portion 11 has an optical axis 10, is provided with the refraction face 1221 that a plurality of intervals set up on the periphery wall of refraction portion 12, and each refraction face 1221 sets up around refraction portion 12, and the refraction face 1221 that a plurality of intervals set up is used for forming the illuminating beam that a plurality of intervals set up, and each illuminating beam is cyclic annular light beam.

Referring to fig. 1 to fig. 3, in particular, the lens 1 provided in this embodiment works as follows:

the light source 3 is arranged close to one side of the refraction part 12 far away from the light-gathering part 11 by arranging the light source 3 on the optical axis 10 and arranging the light source 3 at intervals at one side of the light-gathering part 11; in this embodiment, the light-gathering portion 11 and the light-refracting portion 12 are enclosed to form an accommodating groove, the opening of the accommodating groove is located on one side of the light-refracting portion 12 away from the light-gathering portion 11, and after the light source 3 is arranged at the opening of the accommodating groove, or after the lens cover is arranged on the light source 3, the light emitted by the light source 3 completely or mainly irradiates the groove bottom and the groove wall of the accommodating groove, at this time, the light emitted by the light source 3 is divided into two parts.

The first part of light irradiates the light-gathering part 11 from the light source 3 and irradiates the space on one side of the light-gathering part 11, which is opposite to the light source 3, through the refraction of the light-gathering part 11, so that directional illumination is formed; by arranging a projective film with patterns (the projective film is a filter, a hollow pattern-engraved shading film or other films capable of projecting the patterns) on the light path of the part of light, the projection corresponding to the patterns on the projective film can be formed in the preset direction. The slide may be formed and directly attached to the light-condensing portion 11 of the lens 1; the slide may be printed directly on the light-condensing portion 11; the slide may be disposed at a distance from the light-condensing portion 11 and on a side of the light-condensing portion 11 facing away from the light source 3 (located on an exit light path of the projected light of the lens), and in this case, an imaging lens may be further disposed to image the slide.

A second part of light irradiates the refraction part 12 from the light source 3, is refracted by one side of the refraction part 12, which is opposite to the optical axis 10, and then is emitted from the other side of the refraction part 12, the part of light is refracted by the refraction surface 1221 to form a plurality of illumination beams arranged at intervals, and the illumination beams arranged at intervals formed by the refraction of the refraction surface 1221 are diffused beams, filtering beams or other beams with reduced brightness; the refraction surface 1221 is a surface with a light diffusion function or/and a light filtering function, for example, the refraction surface 1221 may be a cambered surface, a corrugated surface, a toothed surface or other surfaces with a light diffusion function, or/and a surface coated with a filter layer or structure with a light filtering function; the illumination light beam that has guaranteed on the one hand so to be used for a plurality of intervals to set up has the stereovision, and on the other hand has avoided the light beam luminance that is used for the illumination too high to be suitable for and use under the illumination light requirement is comparatively soft, the not high environment of luminance requirement such as some dining tables, bar counter, conveniently build comparatively warm environmental atmosphere.

Specifically, when the light-gathering part 11 is disposed above the light-refracting part 12 and the light source 3 is located on the side of the light-gathering part 11 where the light-refracting part 12 is disposed, the luminaire with the lens 1 may be disposed on a dining table, a bar counter, a floor, or the like, a first portion of light may be used to project light forming a predetermined pattern onto an indoor ceiling, and a second portion of light may be used for illumination of a table top, a bar counter, or the like, so that a soft and appropriately bright atmosphere illumination effect can be achieved; when the condensing part 11 is disposed below the refracting part 12 and the light source 3 is located at a side of the condensing part 11 where the refracting part 12 is disposed, the luminaire with the lens 1 may be installed to a ceiling, a first portion of light may be used for illumination of an indoor space, and a second portion of light may be used for projecting a pattern of light that is scattered and formed into a predetermined light to the indoor ceiling.

The implementation of the lens 1 provided by the embodiment has at least the following beneficial technical effects:

in the lens 1 provided in this embodiment, through the light-gathering portion 11 and the light-refracting portion 12 connected to the light-gathering portion 11, the light emitted from the light source 3 disposed on the optical axis 10 and disposed on one side of the light-refracting portion 12 far away from the light-gathering portion 11 can be divided into two parts, the part of the light passing through the light-converging portion 11 can be used for directional illumination or projection pattern, the part of the light passing through the light-refracting portion 12 can be deflected toward a direction away from the light-converging portion 11 (i.e., away from the directional illumination light or projection light), so as to change the irradiation direction of the light, project the light to the outside of the light-refracting portion 12, reduce the light irradiating toward one side (i.e., the upper side as shown in fig. 3) of the light-converging portion 11, make the light passing through the light-refracting portion 12 mainly concentrate on the periphery of the light-refracting portion 12 and one side (i, atmosphere illumination is formed within a preset angle range, so that the lamp is very suitable for illumination scenes such as atmosphere illumination of bar counters, dining tables and the ground; by arranging the refraction surfaces 1221 at intervals, the conditions that the light spots or the light ring areas formed by the lenses 1 are too small and the brightness is too concentrated can be avoided, so that the illumination effect is softer, and the glare effect caused by sudden change of the illumination brightness is avoided; and have various illumination function and multiple illuminating effect, the user need not to dispose a plurality of lamps and lanterns for realizing multiple illumination function, has reduced the illumination cost.

It should be understood that the optical axis 10 described in the embodiments of the present application refers to the optical axis 10 of the ideal optical system in which the lens 1 is located, i.e. a straight line in which the direction in which the light rays are not deflected in the ideal optical system in which the lens 1 is located. The explanation applies to the description relating to the optical axis 10 in the embodiments of the present application, and the concept of the optical axis 10 is only for the purpose of briefly and clearly explaining the structure of the lens 1 in the embodiments of the present application, and is not to be construed as limiting the present technical solution.

Each refraction surface 1221 is connected with a light-blocking surface 1222, and each light-blocking surface 1222 and each refraction surface 1221 are alternately arranged in sequence; when the light emitted from the light source 3 passes through the refraction part 12, no light is emitted from the surface of the light-blocking surface 1222 or/and the light-blocking surface itself has the light-blocking function; that is, the refracted light ray formed when the light ray emitted from the light source 3 passes through the refraction part 12 cannot irradiate the light-blocking surface 1222, or/and the refracted light ray formed when the light ray emitted from the light source 3 passes through the refraction part 12 cannot pass through the light-blocking surface 1222, so that the illuminating light beams emitted through the refraction surfaces 1222 arranged at intervals are conveniently arranged at intervals, and thus, the layered effect is achieved; the light emitted from the light source 3 will not irradiate the light-blocking surface 1222 when passing through the refraction portion 12, mainly the light-blocking surface 1222 is not on the light path of the refraction light formed when the light emitted from the light source 3 passes through the refraction portion 12, and the light-blocking surface 1222 can be parallel to or far away from the light path of the refraction light formed when the light emitted from the light source 3 passes through the refraction portion 12; the refracted light ray formed when the light emitted from the light source 3 passes through the refraction portion 12 cannot pass through the light blocking surface 1222, and mainly requires the light blocking surface 1222 to be opaque, which can be implemented by disposing a corresponding light blocking coating on the light blocking surface 1222 or by other processes capable of making the light blocking surface 1222 opaque, which is not listed here, as long as the light blocking surface 1222 is made opaque. Referring to fig. 1 to 3, in one embodiment of the present application,

in one embodiment of the present application, the light-gathering portion includes an optical axis 10, and the refractive surface 1221 is connected to the light-blocking surface 1222 to form the first sawtooth structure 122; the first sawtooth structures 122 are disposed opposite to the optical axis 10, each first sawtooth structure 122 is annular, and an axis of each annular first sawtooth structure 122 coincides with the optical axis 10. This has the advantage that the first sawtooth structures 122 are arranged in a plurality of layers, so that a plurality of layers of nested annular light spots can be obtained, and the specific shape of the first sawtooth structures 122 of each layer can be set according to the position of the first sawtooth structures 122 of each layer and the direction of the light emitted by the light source 3, so as to improve the lighting effect.

It is of course also feasible that, in another embodiment of the present application, one or more first sawtooth structures 122 are provided on a side of the refractive part 12 facing away from the optical axis 10, the first sawtooth structures 122 being wound around the body of the refractive part 12 and extending in an axial direction around the optical axis 10. This has the advantage that the light refracted by the first sawtooth structure 122 can be distributed spirally to form a spiral light spot; when a further refraction element is matched, the spot illumination effect with higher randomness can be obtained.

Referring to fig. 1 to 3, in an embodiment of the present application, the light blocking surface 1222 is disposed opposite to the light condensing portion 11, and the light refracting portion 12 includes a light incident surface 121 opposite to the optical axis 10; the refraction surface 1221 is an arc surface, and light rays emitted by the light source 3 which are arranged at intervals with the light-gathering part 11 and located on one side of the extension part of the refraction part 12 corresponding to the light-gathering part 11 can sequentially pass through the light-incident surface 121 and the refraction surface 1221 and deflect towards a direction deviating from the light-gathering part 11 (namely deviating from the directional illumination light rays or the projection light rays); the "extension part of the refractive part 12", that is, the part of the refractive part 12 which is arranged around the periphery of the light-gathering part 11 and is opposite to the periphery of the light-gathering part; the light source 3 which is arranged at an interval with the light-gathering part 11 and is positioned on one side of the extending part of the refraction part 12 corresponding to the light-gathering part 11 is also the light source 3 arranged at the notch position of the accommodating groove; light blocking surface 1222 and refraction surface 1221 set up in turn in proper order, can avoid the illumination area undersize of facula or the aureola after refraction of refraction surface 1221, luminance is too concentrated, and then makes lens 1's illuminating effect softer, realizes the moderate and even atmosphere illuminating effect of illuminance of luminance, can avoid the sudden change of luminance to cause glare effect simultaneously.

As the most preferable configuration of this embodiment, the light blocking surface 1222 is a conical surface, and the light emitted from the light source 3 can be refracted by the light incident surface 121 and then propagate along the direction of the generatrix of the conical surface where the light blocking surface 1222 is located; or/and the light propagates along the direction away from the generatrix of the conical surface where the light blocking surface is located, that is, the light emitted from the light source 3 is refracted by the light incident surface 121 and then does not irradiate the light blocking surface 1222, and no light is emitted from the light blocking surface 1222, so that a plurality of illuminating light beams arranged at intervals are conveniently formed, and thus the utilization efficiency of the light entering the refraction part 12 from the light incident surface 121 can be maximized.

In the present embodiment, after passing through the light incident surface 121, the light emitted from the light source 3 is refracted from the refraction surface 1221 and exits from the lens 1; set up refraction face 1221 into the arc surface, can make through refraction face 1221 refraction and leave the bigger divergence angle of light behind lens 1, when lens 1 and the lamps and lanterns that use lens 1 are less or the illumination distance is near, can avoid the facula that refraction face 1221 formed or the condition that the halo area undersize, luminance are too concentrated, and illuminating effect is softer, avoids the sudden change of luminance to cause glare effect.

The light blocking surface 1222 is a conical surface, and further, according to the refractive index of the material of the lens 1 and the relative position relationship between the light blocking surface 1222 and the light source 3, the position and posture relationship between the generatrix of the light blocking surface 1222 forming a conical surface shape and the optical axis 10 can be configured, so that the partial light rays emitted by the light source 3 after being refracted by the light incident surface 121 are emitted after being refracted by the light refracting surface 1221 to a greater extent, thereby improving the utilization efficiency of the light rays entering the light refracting part 12 through the light incident surface 121.

Referring to fig. 1 to 3, as a specific solution of the present embodiment, a plurality of first sawtooth structures 122 are disposed on the periphery of the refractive portion 12 along a direction sequentially away from the light-condensing portion 11; the central angle range of the generatrix of the refraction surface 1221 along the direction sequentially far away from the light-gathering part 11 is 3-10 degrees, and the central angle of the generatrix of the refraction surface 1221 changes from small to large along with the distance from the first insection surface 1221 to the light-gathering part 11, specifically, the central angle of the generatrix of the refraction surface 1221 can be any one of 3.5 degrees, 4 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees and 9.5 degrees, and can also be other angles from 3-10 degrees; the angle between the light blocking surface 1222 and the axial direction of the optical axis 10 along the direction sequentially away from the light collecting portion 11 ranges from 40 ° to 70 °, and the angle between the light blocking surface 1222 and the axial direction of the optical axis 10 varies from small to large with the distance between the second corrugated surface 1222 and the light collecting portion 11 from near to far, specifically, the angle between the light blocking surface 1222 and the axial direction of the optical axis 10 may be any one of 45 °, 50 °, 60 ° and 65 °, and may of course be other angles from 40 ° to 70 °; part of light rays emitted by the light source 3 irradiate the light-gathering part 11 at a cone angle of 20-90 degrees, and the rest of light rays are refracted by the light-entering surface 121 and the first sawtooth structures 122 and project illumination light rays with light-emitting angles of 10-30 degrees to the periphery and the lower part of the refraction part 12; specifically, the cone angle at which the light emitted from the light source 3 is irradiated to the light-condensing portion 11 may be any one of angles of 25 °, 30 °, 40 °, 50 °, 60 °, 70 °, 80 °, and 85 °, or may be any other angle of 20 ° to 90 °; the light projected from the light source 3 to the periphery and the lower side of the refraction portion 12 has an angle of 10.5 °, 15 °, 20 °, 25 °, 29.5, or may have any other angle of 10 ° to 30 °.

Referring to fig. 1 to 3, in an embodiment of the present application, an end of the refractive portion 12 away from the light-gathering portion 11 is connected to a light distribution assembly or other components of a lamp, in the embodiment, the lens 1 further includes a connecting portion 13 connected to an end of the refractive portion 12 away from the light-gathering portion 11, and the connecting portion 13 is disposed on a side of an outer peripheral wall of the refractive portion 12 away from the light-gathering portion 11.

The connecting portion 13 is used for connecting the lens 1 with other parts of the light distribution assembly or the lamp. For example, the connection portion 13 may be connected to the substrate on which the light source 3 is provided by forming a through hole 131 in the connection portion 13 and using a screw connector inserted through the through hole 131.

In other embodiments, the lens 1 and other parts of the light distribution assembly or the lamp can be connected by other means, such as a threaded connection or being adhered to the other parts of the light distribution assembly or the lamp by glue; the lens 1 and other spare and accessory parts of the light distribution assembly or the lamp can be detachably connected and also can be fixedly connected, the connection relation between the lens 1 and other spare and accessory parts of the light distribution assembly or the lamp is only required to be relatively stable when the lens is used, and the connection relation is not specifically limited.

Referring to fig. 2, 4 and 5, another object of the present invention is to provide a light distribution assembly including the lens 1 as described above, the light distribution assembly further includes a lampshade 2, a receiving groove is formed on one side of the lampshade 2, the lens 1 is disposed in the receiving groove, and a side of the condensing portion 11 away from the extending portion of the refractive portion 12 (i.e., a side away from the light source 3) is opposite to a side of the imaging lens portion located at the bottom of the receiving groove.

More specifically, the lamp cover 2 includes an imaging mirror portion 21, and a cover body portion 22 provided around the periphery of the imaging mirror portion 21; the imaging mirror part 21 and the projection part 11 are arranged along the optical axis 10, and the imaging mirror part 21 and the cover part 22 enclose to form the accommodating groove.

As a specific scheme of this embodiment, the lampshade 2 may be a transparent lampshade 2, and more specifically, the inner side or/and the outer side of the transparent lampshade 2 may be configured as a first concave-convex surface 221, a spherical surface or an arc surface, etc., so that the light rays refracted by the light incident surface 121 and the refraction surface 1221 may be further diffused, and finally, random light spots projected to the periphery of the lampshade 2 or light spots having a distribution rule are formed; the lampshade 2 can also adopt a semitransparent lampshade 2 or a milky white lampshade 2, so that the light rays refracted by the light incidence surface 121 and the refraction surface 1221 can be projected into the peripheral space of the lampshade 2 more uniformly, and the lamp has more uniform and soft lighting effect.

Referring to fig. 2, 4 and 5, in an embodiment of the present application, a surface of the imaging lens portion 21 opposite to the light condensing portion 11 is a curved surface or a fresnel surface protruding to a side of the light source 3; one surface of the light-condensing portion 11, which faces away from the imaging mirror portion 21, is an arc surface or a fresnel surface protruding toward the light source 3 side; one side of the light-gathering part 11, which is opposite to the imaging mirror part 21, is a plane or a spherical surface; the focal length of the imaging mirror portion 21 is positive, and the distance between the condensing portion 11 and the imaging mirror portion 21 is larger than the focal length of the imaging mirror portion 21.

In the present embodiment, the lampshade 2 having the transparent imaging lens portion 21 is preferably adopted, so that a predetermined pattern can be transmitted into a space on the side of the imaging lens portion 21 opposite to the light-condensing portion 11 by arranging a projective film between the light-condensing portion 11 and the imaging lens portion 21, where the projective film is a filter having a pattern, a light-shielding film having a hollow pattern, or other film capable of projecting a shape by light irradiation.

As a preferable aspect of the present embodiment, the light distribution assembly is further provided with a structure for adjusting the distance between the slide and the imaging mirror portion 21, so that the distance between the imaging position of the slide and the light distribution assembly is adjustable.

Referring to fig. 2, 4 and 5, in an embodiment of the present application, a first concave-convex surface 221 is disposed on an inner side surface of the accommodating groove along a circumferential direction of an inner wall thereof; the outer peripheral wall of the cover body portion 22 is provided with a second concave-convex surface 222 arranged along the circumferential direction of the outer peripheral wall; the first concave-convex surface 221 and the second concave-convex surface 222 are corrugated surfaces, insection surfaces or other textured surfaces capable of regularly diffusing light beams; when the refraction surface 1221 is a surface having a function of diffusing light, the diffusion direction of light emitted from the light source 3 when the light is emitted through the refraction portion 12 and the diffusion direction of light emitted through the second concave-convex surface 222 are arranged in a crossing manner; in this embodiment, the first sawtooth structure 122 is configured to diffuse the light emitted from the light source 3 along a first direction, and the first concave-convex surface 221 and the second concave-convex surface 222 are configured to diffuse the light emitted from the light source 3 along a second direction, where the first direction is perpendicular to the second direction; of course, in other embodiments, the first direction and the second direction may not be limited to be vertically arranged, and only the crossed arrangement is satisfied; of course, in order to ensure the use effect after the intersection is set, the intersection angle range of the intersection is 20 ° to 90 °, that is, the intersection angle range of the first direction and the second direction is 20 ° to 90 °, specifically, any one of 20 °, 30 °, 40 °, 50 °, 60 °, 70 °, 80 °, and 85 may be used, and of course, those skilled in the art may actually need to select another angle between 20 ° and 90 °.

In the present embodiment, a lamp cover 2 having a transparent cover body portion 22 is used; the first concave-convex surface 221 is a corrugated surface, and the second concave-convex surface 222 is a tooth-corrugated surface, so that the inner side surface of the accommodating groove is set as the first concave-convex surface 221, that is, the inner wall of the cover body 22 is set as the first concave-convex surface 221, and meanwhile, the second concave-convex surface 222 is arranged on one side of the cover body 22, which is back to the optical axis 10, so that the light rays refracted by the light incident surface 121 and the first sawtooth structures 122 can be further refracted; because the first direction is perpendicular to the second direction, the light refracted by the first concave-convex surface 221 and the second concave-convex surface 222 can be transmitted to the periphery of the lampshade 2 according to a certain distribution rule, so that the light shadow effect with strong layering sense is achieved, the atmosphere can be well supported, glare is not easily generated, and discomfort of light spots to human eyes is prevented.

Another object of the present application is to provide a luminaire comprising the lens 1 or light distribution assembly as described above.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A lens characterized by comprising a light-condensing portion, and a light-refracting portion provided around a periphery of the light-condensing portion and extending to one side of the light-condensing portion; the light refraction part is characterized in that a plurality of light refraction surfaces arranged at intervals are arranged on the peripheral wall of the light refraction part, each light refraction surface is a surface with light diffusion or/and light filtering functions, and each light refraction surface is arranged around the light refraction part.

2. The lens of claim 1, wherein each refracting surface is connected with a light-isolating surface, and each light-isolating surface and each refracting surface are arranged alternately in sequence.

3. The lens of claim 2, wherein the light-focusing portion includes an optical axis, and the refracting surface and the light-blocking surface are connected to form a first sawtooth structure; the first sawtooth structures are arranged back to the optical axis, each first sawtooth structure is annular, and the axis of each annular first sawtooth structure is superposed with the optical axis;

the light isolating surface is arranged back to the light condensing part, and the light refracting part also comprises a light incident surface facing the optical axis; the light refracting surface is an arc surface, is arranged at an interval with the light collecting part and is positioned at the position where the extending part of the light refracting part is opposite to the light rays emitted by the light source at one side of the light collecting part, and can sequentially pass through the light incident surface and the light refracting surface and deflect towards the direction deviating from the light collecting part.

4. The lens of claim 3, wherein the light-blocking surface is a conical surface, and light emitted by the light source can propagate in the direction of a generatrix of the conical surface where the light-blocking surface is located after being refracted by the light-incident surface; or/and the light is transmitted along the direction far away from the generatrix of the conical surface of the light isolating surface.

5. The lens as claimed in any one of claims 1 to 4, wherein the end of the refractive portion away from the light-gathering portion is connected with other parts of a light distribution assembly or a lamp.

6. A light distribution assembly characterized by comprising the lens according to any one of claims 1 to 5, and further comprising a globe including an imaging mirror portion, and a globe portion disposed around a periphery of the imaging mirror portion; the imaging lens part with the coaxial setting of condensing part, imaging lens part with cover somatic part encloses and closes and form the holding tank, lens set up in the holding tank, just condensing part is kept away from one side of refraction portion extension with imaging lens part is relative.

7. A light distribution assembly according to claim 6, wherein a surface of the imaging mirror portion opposite to the light condensing portion is a curved surface or a fresnel-groove surface; one surface of the light-gathering part, which is back to the imaging lens part, is an arc surface or a Fresnel pattern surface.

8. A light distribution assembly as claimed in claim 7, wherein a side of the light collecting portion facing the imaging lens portion is a plane or a spherical surface.

9. The light distribution assembly of claim 6, wherein the inner side surface of the accommodating groove is provided with a first concave-convex surface circumferentially arranged along the inner wall thereof; the outer peripheral wall of the cover body part is provided with a second concave-convex surface arranged along the circumferential direction of the outer peripheral wall of the cover body part, and the first concave-convex surface and the second concave-convex surface are used for regularly diffusing light beams; when the refraction surface is a surface with a light diffusion function, the diffusion direction of light emitted by the light source when the light is emitted through the refraction part is crossed with the diffusion direction of the light when the light is emitted through the second concave-convex surface.

10. A luminaire characterized in that it comprises a lens according to any one of claims 1-5; alternatively, the light fixture includes a light distribution assembly as claimed in any one of claims 6-9.

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