CN214222797U

CN214222797U - Polarized lens and lamp

Info

Publication number: CN214222797U
Application number: CN202120367975.3U
Authority: CN
Inventors: 何春梅
Original assignee: Shenzhen Lei Fei Lighting Technology Co ltd
Current assignee: Shenzhen Lei Fei Lighting Technology Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-09-17
Anticipated expiration: 2031-02-08

Abstract

The application provides a polarized lens and a lamp, wherein the polarized lens comprises a light incidence cavity and a lens side surface, the light incidence cavity comprises a first cavity bottom surface and a second cavity bottom surface, the lens side surface comprises a first lens side surface and a second lens side surface, the first cavity bottom surface is positioned on a first side of a first plane and is configured to deflect light irradiated onto the first cavity bottom surface to a light emergent surface in a direction away from the first plane; the second cavity bottom surface is positioned on the second side of the first plane and is configured to deflect light irradiated onto the second cavity bottom surface to the light-emitting surface in a direction close to the first plane; the first lens side surface is positioned on a first side of the first plane and is configured to reflect light irradiated to the first lens side surface to the light-emitting surface in a direction away from the first plane; the second lens side surface is located on a second side of the first plane and is configured to reflect light irradiated onto the second lens side surface to the light emitting surface in a direction close to the first plane. The polarizing lens provided by the application can better deflect light emitted by the light-emitting element.

Description

Polarized lens and lamp

Technical Field

The application relates to the technical field of lighting equipment, in particular to a polarized lens and a lamp.

Background

With the development of lighting technology, the application of lamps is more and more extensive, in order to meet the application requirements of some special occasions, for example: the light-emitting element is used for lightening the outer vertical surface of a building, and some lamps and lanterns can deflect emergent light by adding the polarization-enhanced lens on the outer side of the light-emitting element so as to better lighten the outer vertical surface of a target object such as the building.

How to design the polarized lens directly influences the lighting effect of the lamp on the outer facade of the target object.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a polarized lens and a lamp, which are used for solving the problem of poor polarization effect of the polarized lens in the related technology.

In a first aspect, an embodiment of the present application provides a polarized lens, including a light exit end, a light entrance end, and a lens side surface, where the light exit end is provided with a light exit surface; the light incident end is provided with a light incident cavity, and the light incident cavity is provided with a cavity opening, a cavity bottom surface opposite to the cavity opening and a cavity side surface arranged at the periphery of the cavity bottom surface; the side surface of the lens is positioned between the light inlet end and the light outlet end. The cavity bottom surface comprises a first cavity bottom surface and a second cavity bottom surface, the first cavity bottom surface is positioned on the first side of the first plane and is configured to deflect light irradiated onto the first cavity bottom surface to the light emitting surface in a direction away from the first plane; the first plane passes through each point on the optical axis of the polarized lens and is intersected with the cavity bottom surface; the second cavity bottom surface is located on a second side of the first plane and is configured to deflect light irradiated onto the second cavity bottom surface to the light emitting surface in a direction close to the first plane. The lens side faces comprise a first lens side face and a second lens side face, the first lens side face is positioned on the first side of the first plane and is configured to reflect the light irradiated on the first lens side face to the light emergent face in a direction away from the first plane; the second lens side surface is located on a second side of the first plane and is configured to reflect light irradiated onto the second lens side surface to the light emitting surface in a direction close to the first plane.

The polarized lens that this application embodiment provided, not only first lens side, second lens side can deflect the light that light emitting component sent, and first chamber bottom surface, second chamber bottom surface also can deflect the light that light emitting component sent moreover, have improved polarized lens's whole polarization effect like this.

In some embodiments, in a cross-section perpendicular to the first plane and parallel to the optical axis, the first cavity bottom surface has a first end point near the first plane and a second end point far from the first plane, and the distance from the first end point to the cavity opening is smaller than the distance from the second end point to the cavity opening; the second cavity bottom surface is provided with a third end point close to the first plane and a fourth end point far away from the first plane, and the distance from the third end point to the cavity opening is smaller than the distance from the fourth end point to the cavity opening; the included angle between the straight line passing through the first end point and the second end point and the first plane is larger than the included angle between the straight line passing through the third end point and the fourth end point and the first plane.

Through the design, make polarized lens's simple structure like this, need not to set up the microstructure on first chamber bottom surface, second chamber bottom surface to make things convenient for this polarized lens's preparation, be favorable to reducing this polarized lens's design and cost of manufacture.

In some embodiments, in a cross section perpendicular to the first plane and parallel to the optical axis, the first lens side surface has a fifth end point close to the light exit surface and a sixth end point far away from the light exit surface, and a distance from the fifth end point to the first plane is greater than a distance from the sixth end point to the first plane; the side face of the second lens is provided with a seventh endpoint close to the light-emitting surface and an eighth endpoint far away from the light-emitting surface, and the distance from the seventh endpoint to the first plane is greater than the distance from the eighth endpoint to the first plane; an included angle between a straight line passing through the fifth end point and the sixth end point and the first plane is larger than an included angle between a straight line passing through the seventh end point and the eighth end point and the first plane.

Through the design, make polarized lens's simple structure like this, need not to set up the microstructure on first lens side, second lens side to make things convenient for this polarized lens's preparation, be favorable to reducing this polarized lens's design and cost of manufacture.

In some embodiments, the light-emitting surface is circular and includes a first diffusion region, a second diffusion region and a third diffusion region, the first diffusion region is in a shape of a minor arc and is located on a first side of the first plane, a plurality of first diffusion protrusions arranged in an array are arranged in the first diffusion region, and the first diffusion protrusions have curved surfaces bent in a first direction; the first direction is perpendicular to the first plane; the second diffusion area is positioned in the central area of the light-emitting surface and is connected with the first diffusion area, a plurality of second diffusion bulges which are arranged in an array mode are arranged in the second diffusion area, and each second diffusion bulge is provided with a curved surface which is bent in the second direction; the second direction is perpendicular to the first direction and the optical axis; and the third diffusion area is positioned at the periphery of the second diffusion area and is connected with the first diffusion area, the third diffusion area and the area formed by the second diffusion area are in a major arc arch shape, and a plurality of third diffusion bulges arranged in an array are arranged in the third diffusion area.

By arranging a plurality of first diffusion protrusions in the first diffusion area, the brightness of the root area of the light spot on the facade of the target can be prevented from being too high. By providing the second diffusion protrusion in the second diffusion region, sharp corners of the light spot in the root region can be eliminated. The third diffusion bulge is arranged in the third diffusion area, so that the brightness transition of the main light spot area on the outer vertical surface of the target object is uniform.

In some embodiments, the first diffusion region comprises a first sub-region and a second sub-region arranged along the first direction, the second sub-region being located between the first sub-region and the second diffusion region; the first diffusion bulge comprises a plurality of first sub-diffusion bulges which are positioned in the first sub-area and are arranged in an array mode, and a plurality of second sub-diffusion bulges which are positioned in the second sub-area and are arranged in an array mode, and each first sub-diffusion bulge and each second sub-diffusion bulge are provided with a curved surface bent in the first direction; in a cross section perpendicular to the first plane and parallel to the optical axis, along the first direction and a direction from the first diffusion region to the second diffusion region, the protrusion height of the curved surface of the first sub-diffusion protrusion gradually decreases, and the protrusion height of the curved surface of the second sub-diffusion protrusion increases and then decreases.

The first sub-diffusion bulge and the second sub-diffusion bulge are arranged, so that light rays can be diffused in different degrees, and the brightness transition of the root area of the light spot on the outer vertical surface of the target object is uniform.

In some embodiments, the radius of the light emitting surface is R1, and the radius of the second diffusion region is R2; along the first direction, the first sub-region has a size of H1, and the second sub-region has a size of H2; wherein, the range of R2/R1 is 0.5-0.6; H1/R1 is in the range of 0.3-0.35; H2/R1 is in the range of 0.15-0.2. By such an arrangement, the luminance distribution of the light spot can be made more uniform.

In some embodiments, the polarized lens is elongated, and a length direction of the polarized lens is parallel to the first plane; the light emitting surface is rectangular and comprises a fourth diffusion area, a fifth diffusion area and a sixth diffusion area which are sequentially arranged along a first direction, the fourth diffusion area is arranged on the first side of the first plane, and the sixth diffusion area is arranged on the second side of the first plane; the first direction is perpendicular to the first plane; a plurality of fourth diffusion bulges which are arranged in an array mode are arranged in the fourth diffusion area, and the fourth diffusion bulges are provided with curved surfaces which are bent along the first direction; a plurality of fifth diffusion bulges which are arranged in an array mode are arranged in the fifth diffusion area, and each fifth diffusion bulge is provided with a curved surface which is bent along the second direction; the second direction is parallel to the length direction of the polarized lens; a plurality of sixth diffusion bulges which are arranged in an array manner are arranged in the sixth diffusion area.

By arranging a plurality of fourth diffusion protrusions in the fourth diffusion area, the brightness of the root area of the light spot on the facade of the target can be prevented from being too high. By providing the fifth diffusion protrusion in the fifth diffusion region, sharp corners of the light spot in the root region can be eliminated. The sixth diffusion zone is provided with the sixth diffusion bulge, so that the brightness transition of the main light spot area on the outer vertical surface of the target object can be uniform.

In some embodiments, the fourth diffusion region includes a first sub-diffusion region and a second sub-diffusion region arranged along the first direction, the second sub-diffusion region being located between the first sub-diffusion region and the fifth diffusion region; the fourth diffusion protrusion comprises a plurality of first sub-protrusions which are positioned in the first sub-diffusion regions and arranged in an array mode, and a plurality of second sub-protrusions which are positioned in the second sub-diffusion regions and arranged in an array mode, and each of the first sub-protrusions and the second sub-protrusions is provided with a curved surface which is bent along the first direction; in a cross section perpendicular to the first plane and perpendicular to the length direction of the polarized lens, along the first direction and a direction from the fourth diffusion area to the fifth diffusion area, the protrusion height of the first sub-convex curved surface is gradually reduced, and the protrusion height of the second sub-convex curved surface is increased and then reduced.

The first sub-bulges and the second sub-bulges are arranged, so that light can be diffused in different degrees, and the brightness transition of the root area of the light spot on the outer vertical surface of the target object is uniform.

In some embodiments, in the first direction, the light emitting surface has a size h, the first sub diffusion region has a size h1, the second sub diffusion region has a size h2, the fifth diffusion region has a size h3, and the sixth diffusion region has a size h 4; wherein the range of h1/h is 0.10-0.2; h2/h is in the range of 0.10-0.15; h3/h is in the range of 0.4-0.6; h4/h is in the range of 0.2-0.3. By such an arrangement, the luminance distribution of the light spot can be made more uniform.

In a second aspect, an embodiment of the present application provides a lamp, including a circuit board, a light emitting element, and the polarized lens of the first aspect, where the polarized lens is disposed on one side of the circuit board; the light-emitting element is arranged on the circuit board and extends into the light incidence cavity of the polarized lens.

Since the light fixture adopts the polarized lens provided in the first aspect, the light fixture also has the technical effect corresponding to the polarized lens, which is not described herein again.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a lamp in the related art;

FIG. 2 is a schematic structural diagram of a lamp according to some embodiments of the present disclosure;

FIG. 3 is a schematic view of the lamp shown in FIG. 2, in operation, showing light passing through a polarizing lens;

FIG. 4 is a schematic view of the lamp shown in FIG. 3 illuminating an external elevation of a target;

FIG. 5 is a schematic illustration of the intensity distribution of the light spot formed on the facade of the target of FIG. 4;

FIG. 6 is a schematic view of the arrangement of the bottom surfaces of the first and second cavities and the side surfaces of the first and second lenses in other embodiments of the present application;

FIG. 7 is a top view of the polarized lens of FIGS. 2 and 3;

FIG. 8 is a schematic view of a first sub-diffusion bump according to some embodiments of the present application;

fig. 9 is an enlarged view of the first sub-diffusion bump in fig. 3;

FIG. 10 is a schematic view of a second sub-diffusion bump according to some embodiments of the present application;

fig. 11 is an enlarged view of the second sub-diffusion bump of fig. 3;

FIG. 12 is an enlarged view of a portion of the third diffusion region of FIG. 7;

FIG. 13 is a schematic view of a third diffusion protrusion according to some embodiments of the present application;

FIG. 14 is a cross-sectional view E-E of FIG. 13;

FIG. 15 is a schematic diagram of the structure of a polarized lens in further embodiments of the present application;

FIG. 16 is a schematic diagram of a cross section of the polarized lens of FIG. 15;

fig. 17 is an enlarged view of a first sub-protrusion in the first sub-diffusion region in fig. 16;

fig. 18 is an enlarged view of a second sub-protrusion in the second sub-diffusion region in fig. 16;

fig. 19 is an enlarged view of the sixth diffusion protrusion of fig. 16.

Reference numerals: a light-emitting surface 1; a first diffusion region 11; a first sub-area 111; a second sub-area 112; a first diffusion region 121; a third diffusion region 122; a first diffusion projection 13; the first sub-diffusion bump 131; the second sub-diffusion protrusion 132; a second diffusion bump 14; a third diffusion bump 15; a fourth diffusion region 16; the first sub-diffusion region 161; a second sub-diffusion region 162; a fifth diffusion region 17; a sixth diffusion region 18; a fourth diffusion protrusion 191; the first sub-protrusions 192; the second sub-protrusion 193; the fifth diffusion projection 194; a sixth diffusion protrusion 195; a light incident cavity 2; a cavity floor 21; a first cavity floor 211; a second cavity floor 212; a cavity side 22; a lumen opening 23; a lens side 3; a first lens side 31; a second lens side 32; a first plane 4; an optical axis 5;

lines

61, 62, 71, 72; a positioning column 8; a Fresnel lens 9; a connecting side wall 91; a polarizing lens 100; a circuit board 200; positioning holes 210; a light emitting element 300.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "upper", "lower", "side", "front", "rear", and the like indicate orientations or positional relationships based on installation, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone.

It should be noted that the same reference numerals are used to denote the same components or parts in the embodiments of the present application, and for the same parts in the embodiments of the present application, only one of the parts or parts may be given the reference numeral, and it should be understood that the reference numerals are also applicable to the other same parts or parts.

As shown in fig. 1, fig. 1 is a schematic structural diagram of a lamp in the related art, the lamp includes a polarization lens 100 and a light emitting element 300, the polarization lens 100 includes a light exit end P1, a light entrance end P2, and a lens side surface 3 located between the light exit end P1 and the light entrance end P2, the light exit end P1 is provided with a fresnel lens 9, the light entrance end P2 is provided with a light incident cavity 2, the light incident cavity 2 includes a cavity bottom surface 21 and a cavity side surface 22, and both the lens side surface 3 and the cavity side surface 22 are symmetrically disposed about an optical axis 5. The light emitting element 300 protrudes into the light incidence cavity 2.

In operation, a part of light emitted from the light emitting element 300 is deflected to a side close to the optical axis 5 (right side in the figure) by refraction of the cavity side surface 22 located on the left side of the optical axis 5, reflection of the lens side surface 3, and refraction of the fresnel lens 9, a part of the light is deflected to a side far from the optical axis 5 (right side in the figure) by refraction of the cavity side surface 22 located on the right side of the optical axis 5, reflection of the lens side surface 3, and refraction of the fresnel lens 9, and a part of the light is irradiated onto the fresnel lens 9 in a direction parallel to the optical axis 5 after passing through the cavity bottom surface 21.

Such a polarized lens 100 in the related art is polarized by the fresnel lens 9 located at the light exit end P1, and the fresnel lens 9 can well deflect the light reflected by the lens side surface 3, however, since the cavity bottom surface 21 is curved, and has a certain collimation effect on the light, the fresnel lens 9 cannot well deflect the part of the light (i.e. the light irradiated to the central area of the fresnel lens 9) parallel or approximately parallel to the optical axis 5, so as to reduce the overall polarization effect of the polarized lens 100, and further illuminate the surface of the target object.

Fig. 2 is a schematic structural diagram of a lamp according to some embodiments of the present disclosure, as shown in fig. 2 and 3, and fig. 3 is a schematic diagram of the lamp shown in fig. 2, in which light passes through a polarizing lens 100 during operation. The lamp includes a circuit board 200, a polarized lens 100, and a light emitting device 300. The polarized lens 100 is disposed on one side of the circuit board 200, and the light emitting element 300 is disposed on the circuit board 200 and extends into the light incident cavity 2 of the polarized lens 100.

In order to facilitate the installation of the polarized lens 100 on the circuit board 200, as shown in fig. 2 and fig. 3, the polarized lens 100 is provided with a positioning column 8, the circuit board 200 is provided with a positioning hole 210, and the positioning column 8 is inserted into the positioning hole 210 in a matching manner, so that the polarized lens 100 can be positioned, and the installation of the polarized lens 100 is facilitated.

The Light Emitting element 300 is defined as any device that emits radiation in the visible region of the electromagnetic spectrum when a potential difference or current is applied thereto, and may be, for example, an LED (Light-Emitting Diode) lamp bead.

The polarized lens 100 includes a light entrance end P2, a light exit end P1, and a lens side surface 3 located between the light entrance end P2 and the light exit end P1, the light entrance end P2 is provided with a light entrance cavity 2, the light entrance cavity 2 has a cavity opening 23, a cavity bottom surface 21 opposite to the cavity opening 23, and a cavity side surface 22 disposed at the periphery of the cavity bottom surface 21, and the light exit end P1 is provided with a light exit surface 1.

The cavity bottom 21 includes a first cavity bottom 211 and a second cavity bottom 212, the first cavity bottom 211 is located on a first side (left side in the drawing) of the first plane 4, and is configured to deflect light irradiated onto the first cavity bottom 211 to the light emitting surface 1 in a direction away from the first plane 4 (left direction in the drawing of fig. 3).

The second cavity bottom 212 is located on a second side (right side in the drawing) of the first plane 4, and is configured to deflect the light irradiated onto the second cavity bottom 212 to the light emitting surface 1 in a direction (left direction in the drawing) close to the first plane 4.

The lens side surface 3 includes a first lens side surface 31 and a second lens side surface 32, the first lens side surface 31 is located on a first side of the first plane 4, and is configured to reflect light irradiated onto the first lens side surface 31 to the light exit surface 1 in a direction away from the first plane 4 (a leftward direction in fig. 3).

The second lens side surface 32 is located on a second side of the first plane 4, and is configured to reflect light irradiated onto the second lens side surface 32 to the light exit surface 1 in a direction (leftward direction in fig. 3) close to the first plane 4.

The first plane 4 is a plane passing through each point on the optical axis 5 of the polarized lens 100 and intersecting the cavity bottom surface 21.

As shown in fig. 4 and 5, fig. 4 is a schematic diagram of the lamp shown in fig. 3 illuminating the outer surface of the target, fig. 5 is a schematic diagram of the contour distribution of the illuminance of the light spots formed on the outer surface of the target 400, and the illuminance of the points on the same line in fig. 5 is the same.

The lamp is located at the bottom of the object 400 and at the right side of the object 400, and the object 400 may be a pillar or a building such as a house, which is not limited herein. The light emitted by the light emitting element 300 of the lamp is deflected leftward by the polarized lens 100, and then is irradiated onto the outer vertical surface of the target object 400, so as to achieve the effect of brightening the outer vertical surface.

The specific structures of the first cavity bottom 211, the second cavity bottom 212, and the first lens side 31 and the second lens side 32 are not exclusive, and at least the following embodiments are included:

fig. 2 and 3 show an exemplary embodiment of a structural arrangement of the first cavity bottom 211, the second cavity bottom 212 and the first lens side 31, the second lens side 32.

As shown in fig. 3, in a cross section perpendicular to the first plane 4 and parallel to the optical axis 5, the first cavity bottom surface 211 has a first end point a1 close to the first plane 4 and a second end point a2 far from the first plane 4, and the distance from the first end point a1 to the cavity opening 23 is smaller than the distance from the second end point a2 to the cavity opening 23, that is: one end of the first cavity bottom surface 211 close to the first plane 4 is tilted towards the cavity opening 23.

The second cavity bottom 212 has a third end point A3 close to the first plane 4 and a fourth end point a4 far from the first plane 4, and the distance from the third end point A3 to the cavity opening 23 is smaller than the distance from the fourth end point a4 to the cavity opening 23, that is: the end of the second cavity bottom surface 212 adjacent to the first plane 4 is tilted toward the cavity opening 23.

The distances from the first end point a1, the second end point a2, the third end point A3 and the fourth end point a4 to the cavity opening 23 all refer to the distances from the first end point a1, the second end point a2, the third end point A3 and the fourth end point a4 to the plane m of the cavity opening 23.

The included angle theta between the straight line 71 passing through the first end point A1 and the second end point A2 and the first plane 4₁Greater than the straight line 72 passing through the third end point A3 and the fourth end point A4 and the first plane 4Included angle theta₂That is: the first cavity bottom 211 is inclined to the first plane 4 to a greater extent and the second cavity bottom 212 is inclined to the first plane 4 to a lesser extent.

Since the first cavity bottom 211 and the second cavity bottom 212 are respectively located at two sides of the first plane 4, and have different inclination degrees with respect to the first plane 4, the light L1 emitted from the light emitting element 300 after being irradiated on the first cavity bottom 211 can deflect the light L1 to the left (i.e. in a direction away from the first plane 4) to the light emitting surface 1, and then continuously deflect to the left after passing through the light emitting surface 1. After the light L2 emitted by the light emitting device 300 irradiates the second cavity bottom surface 212 with a smaller inclination, the light L2 can be deflected to the left (i.e. the direction close to the first plane 4) to the light emitting surface 1, and then the light L2 is deflected to the left after passing through the light emitting surface 1.

The light is deflected by arranging the first cavity bottom surface 211 and the second cavity bottom surface 212 which have different inclination degrees relative to the first plane 4, so that the structure of the polarized lens 100 is simple, microstructures do not need to be arranged on the first cavity bottom surface 211 and the second cavity bottom surface 212, the polarized lens 100 is convenient to manufacture, and the design and manufacturing cost of the polarized lens 100 are reduced.

As shown in fig. 3, in a cross section perpendicular to the first plane 4 and parallel to the optical axis 5, the first lens side surface 31 has a fifth end a5 close to the light emitting surface 1 and a sixth end a6 away from the light emitting surface 1, and a distance from the fifth end a5 to the first plane 4 is greater than a distance from the sixth end a6 to the first plane 4.

The second lens side 32 has a seventh end a7 close to the light-emitting surface 1 and an eighth end A8 far from the light-emitting surface 1, and a distance from the seventh end a7 to the first plane 4 is greater than a distance from the eighth end A8 to the first plane 4, that is: the polarized lens is flared along the optical axis 5 and points from the light-in end P2 to the light-out end P1.

The included angle theta between the straight line 61 passing through the fifth end point A5 and the sixth end point A6 and the first plane 4₃An included angle theta between the first plane 4 and a straight line 62 passing through the seventh end A7 and the eighth end A8₄That is: the first lens side 31 is inclined to the first plane 4 to a greater extent than the second lens side 32 is inclined to the first planeThe degree of inclination of a plane 4.

Since the first lens side surface 31 and the second lens side surface 32 are respectively located at two sides of the first plane 4, and the inclination degrees of the first lens side surface and the second lens side surface are different from each other with respect to the first plane 4, the light L3 emitted by the light emitting element 300 can be deflected to the left after irradiating the first lens side surface 31, that is, the light L3 is deflected to the light emitting surface 1 in a direction away from the first plane 4, and continues to be deflected to the left after passing through the light emitting surface 1. After the light L4 emitted by the light emitting device 300 irradiates the second lens side 32 with a smaller inclination, the light L4 can be deflected to the left (i.e., the direction close to the first plane 4) to the light emitting surface 1, and then the light L4 is deflected to the left after passing through the light emitting surface 1.

The light is deflected by the first lens side surface 31 and the second lens side surface 32 which are arranged at different inclination degrees relative to the first plane 4, so that the structure of the polarized lens 100 is simple, microstructures do not need to be arranged on the first lens side surface 31 and the second lens side surface 32, the polarized lens 100 is convenient to manufacture, and the design and manufacturing cost of the polarized lens 100 are reduced.

The first cavity bottom 211, the second cavity bottom 212, the first lens side 31, and the second lens side 32 may be curved surfaces, such as free-form surfaces, or flat surfaces, and are not limited herein.

Fig. 6 shows an embodiment of another structural arrangement of the first cavity bottom 211, the second cavity bottom 212, and the first lens side 31, the second lens side 32.

As shown in fig. 6, a straight line 71 passing through the first end point a1 and the second end point a2, and a straight line 72 passing through the third end point A3 and the fourth end point a4 are perpendicular to the optical axis 5; the included angle between the straight line 61 passing through the fifth endpoint a5 and the sixth endpoint a6 and the optical axis 5 is equal to the included angle between the straight line 72 passing through the seventh endpoint a7 and the eighth endpoint A8 and the optical axis 5.

The first cavity bottom 211 includes a plurality of first microprisms 213, each first microprism 213 having a first prism face 2131, the second cavity bottom 212 includes a plurality of second microprisms 214, each second microprism 214 having a second prism face 2141.

In a cross-section perpendicular to the first plane 4 and parallel to the optical axis 5An inclination angle theta of the prism surface 2131 relative to the first plane 4₉Greater than the tilt angle theta of the second prism surface 2141 relative to the first plane 4₁₀。

Because the angles of the first prism face 2131 and the second prism face 2141 are different, the light L1 emitted by the light emitting element 300 after irradiating the first prism face 2131 with a larger inclination angle can deflect the light L1 to the left (i.e., in a direction away from the first plane 4) to the light emitting face 1, and then continue to deflect to the left after passing through the light emitting face 1. After the light L2 emitted by the light emitting element 300 irradiates the second prism face 2141 with a smaller tilt angle, the light L2 can be deflected to the left (i.e. the direction close to the first plane 4) to the light emitting surface 1, and then the light L2 is deflected to the left after passing through the light emitting surface 1.

As shown in fig. 6, the first lens side surface 31 includes a plurality of third microprisms 33, each third microprism 33 having a third prism surface 331, and the second lens side surface 32 includes a plurality of fourth microprisms 34, each fourth microprism 34 having a fourth prism surface 341.

The inclination angle theta of the third prism surface 331 with respect to the first plane 4 in a cross section perpendicular to the first plane 4 and parallel to the optical axis 5₁₁Is larger than the inclination angle theta of the fourth prism surface 341 relative to the first plane 4₁₂。

Because the angles of the third prism surface 331 and the fourth prism surface 341 are different, the light L1 emitted from the light emitting element 300 after being irradiated on the third prism surface 331 with a larger inclination angle can deflect the light L1 to the left (i.e. in the direction away from the first plane 4) to the light emitting surface 1, and then continuously deflect to the left after passing through the light emitting surface 1. After the light L2 emitted from the light emitting element 300 irradiates the fourth prism surface 341 with a smaller tilt angle, the light L2 can be deflected to the left (i.e. the direction close to the first plane 4) to the light emitting surface 1, and then the light L2 is deflected to the left after passing through the light emitting surface 1.

As shown in fig. 3 and 6, in the polarized lens, not only the first lens side surface 31 and the second lens side surface 32 can deflect the light emitted by the light emitting element 300, but also the first cavity bottom surface 211 and the second cavity bottom surface 212 can deflect the light emitted by the light emitting element 300, which improves the overall polarization effect of the polarized lens 100 compared with the polarized lens 100 shown in fig. 1, thereby improving the lighting effect of the lamp on the outer vertical surface of the target object 400.

The whole structure of the polarized lens is not exclusive, and in some embodiments, as shown in fig. 2 and 3, the polarized lens 100 is a rotating body, and the light emitting surface 1 is circular. It can be understood that: a first half lens formed by rotating the cross section on the left side of the optical axis 5 by 180 degrees, and a second half lens formed by rotating the cross section on the right side of the optical axis 5 by 180 degrees, are combined to form a polarized lens 100.

In other embodiments, as shown in fig. 15 and 16, fig. 15 is a schematic diagram of another structure of the polarized lens 100, and fig. 16 is a schematic diagram of a cross section of the polarized lens 100 in fig. 15. The polarized lens 100 is a stretched body, the polarized lens 100 is in a strip shape, the length direction of the polarized lens 100 is parallel to the first plane 4, and the light-emitting surface 1 is in a rectangular shape. It can be understood that: the polarizing lens 100 is formed by stretching the cross section in fig. 15 in a direction parallel to the first plane 4 and perpendicular to the optical axis 5.

As shown in fig. 15 and 16, in order to fix the polarized lens 100 on the circuit board 200, connection sidewalls 91 are disposed on two sides of the polarized lens 100 along the first direction Y, and the connection sidewalls 91 are fixedly connected to the circuit board 200. The connection sidewall 91 may be connected to the circuit board 200 by a fastening member, an adhesive, a clamping, or the like, which may be more practical.

In the embodiment in which the polarized lens is a rotating body, as shown in fig. 3 and 7, fig. 7 is a plan view of the polarized lens in fig. 2 and 3.

The light emitting surface 1 includes a first diffusion region 11, a second diffusion region 121, and a third diffusion region 122.

As shown in fig. 7, the first diffusion region 11 is in the shape of a minor arc and is located on the left side of the first plane 4 in the first side view, and a plurality of first diffusion protrusions 13 are arranged in the first diffusion region 11. As shown in fig. 3, the first diffusion protrusion 13 has a curved surface curved in a first direction Y perpendicular to the first plane 4.

As shown in fig. 7, the second diffusion area 121 is located in the central region of the light emitting surface 1 and connected to the first diffusion area 11, a plurality of second diffusion protrusions 14 are arranged in an array in the second diffusion area 121, and each second diffusion protrusion 14 has a curved surface curved in the second direction X; the second direction X is perpendicular to the first direction Y and the optical axis 5.

The third diffusion region 122 is located at the periphery of the second diffusion region 121 and connected to the first diffusion region 11, a region formed by the third diffusion region 122 and the second diffusion region 121 is in a shape of a major arc, and a plurality of third diffusion protrusions 15 arranged in an array are disposed in the third diffusion region 122.

By arranging a plurality of first diffusion protrusions 13 in the first diffusion area 11, as shown in fig. 3, when light passes through the first diffusion protrusions 13, the curved surface of the first diffusion protrusions 13 can scatter the light L3 in the first direction Y, thereby preventing the brightness of the root area of the light spot on the outer vertical surface of the object 400 from being too high.

By providing the second diffusion protrusion 14 on the second diffusion area 121, as shown in fig. 3 and 7, when light passes through the second diffusion protrusion 14, the curved surface of the second diffusion protrusion 14 can scatter the light in the second direction X to widen the root area of the light spot on the outer vertical surface of the object 400, so that the sharp corner (i.e., V-shaped light spot) of the light spot on the root area can be eliminated.

By arranging the third diffusion protrusion 15 on the third diffusion area 122, when the light passes through the third diffusion protrusion 15, the light can be scattered by the third diffusion protrusion 15, so that the brightness transition of the main light spot area on the outer vertical surface of the target 400 is uniform.

It should be noted that: as shown in fig. 4 and 5, the root area of the light spot is the light spot area located at the bottom of the outer vertical surface of the target 400, and the main light spot area is the area of the light spot except the root. The light passing through the first diffusion area 11 and the second diffusion area 121 is irradiated on the outer vertical surface of the object 400 to form a base area of the light spot, and the light passing through the third diffusion area 15 is irradiated on the outer vertical surface of the object 400 to form a main light spot area.

In some embodiments, as shown in fig. 3 and 7, the first diffusion region 11 includes a first sub-region 111 and a second sub-region 112 arranged along the first direction Y, and the second sub-region 112 is located between the first sub-region 111 and the second diffusion region 121.

The first diffusion protrusion 13 includes a plurality of first sub-diffusion protrusions 131 located in the first sub-region 111 and arranged in an array, and a plurality of second sub-diffusion protrusions 132 located in the second sub-region 112 and arranged in an array, and each of the first sub-diffusion protrusions 131 and the second sub-diffusion protrusions 132 has a curved surface curved in the first direction Y.

As shown in fig. 3, 9 and 11, fig. 9 is an enlarged view of the first sub-diffusion protrusion 131 of fig. 3, and fig. 11 is an enlarged view of the second sub-diffusion protrusion 132 of fig. 3. In a cross section perpendicular to the first plane 4 and parallel to the optical axis 5, along the first direction Y and in a direction from the first diffusion region 11 to the second diffusion region 121, the protrusion height of the curved surface 1311 of the first sub-diffusion protrusion 131 gradually decreases, and the protrusion height of the curved surface 1321 of the second sub-diffusion protrusion 132 increases and then decreases.

Since the protrusion height of the curved surface 1311 of the first sub-diffusion protrusion 131 is gradually decreased in the first direction Y, the protrusion height of the curved surface 1321 of the second sub-diffusion protrusion 132 is increased and then decreased, that is: the curved surface 1321 of the second sub-diffusion protrusion 132 is in an arc shape, the curved surface 1311 of the first sub-diffusion protrusion 131 is in a half arc shape, so that the degree of diffusion of the curved surface 1321 of the second sub-diffusion protrusion 132 in the arc shape to light is large, the degree of diffusion of the curved surface 1311 of the first sub-diffusion protrusion 131 in the half arc shape to light is small, and the light is diffused to different degrees by the first sub-diffusion protrusion 131 and the second sub-diffusion protrusion 132, so that the luminance transition of the root area of the light spot on the outer vertical surface of the target 400 is uniform.

In some embodiments, as shown in fig. 3, 8 and 9, fig. 8 is a schematic structural view of a single first sub-diffusion protrusion 131. The curved surface 1311 of the first sub-diffusion bump 131 satisfies the following functional relationship 1:

z＝0.6x²+0.25y²+0.35x⁴+0.06y⁴；

wherein, (x, y, z) is the coordinate of any point on the curved surface 1311 of the first sub-diffusion bump 131 in the first coordinate system, and the origin of the first coordinate system is the central point of the curved surface 1311 of the first sub-diffusion bump 131; the X-axis of the first coordinate system is parallel to the second direction X, the Y-axis of the first coordinate system is parallel to the first direction Y, and the positive direction of the z-axis of the first coordinate system is directed into the first sub-diffusion protrusion 131.

As shown in fig. 3, 10 and 11, fig. 10 is a schematic structural view of a single second sub-diffusion bump 132. The curved surface 1321 of the second sub-diffusion bump 132 satisfies the following functional relationship 2:

z＝0.8×(x²+y²)-0.6y；

wherein, (x, y, z) is the coordinate of any point on the curved surface 1321 of the second sub-diffusion protrusion 132 in the second coordinate system, and the origin of the second coordinate system is the center point of the curved surface 1321 of the second sub-diffusion protrusion 132; the X-axis of the second coordinate system is parallel to the second direction X, the Y-axis of the second coordinate system is parallel to the first direction Y, and the positive direction of the Y-axis of the second coordinate system points to the second diffusion region 121; the positive direction of the z-axis of the second coordinate system points into the second sub-diffusion protrusion 132.

Research shows that when the curved surface 1311 of the first sub-diffusion protrusion 131 satisfies the functional relation 1 and the curved surface 1321 of the second sub-diffusion protrusion 132 satisfies the functional relation 2, the first sub-diffusion protrusion 131 and the second sub-diffusion protrusion 132 can achieve the best light diffusion effect, so that the luminance transition of the root area of the light spot on the outer vertical surface of the target 400 can be more uniform.

Of course, the curved surface 1311 of the first sub diffusion bump 131 is not limited to satisfying the functional relation 1, and other functional relations may be satisfied as long as: the convex height of the curved surface 1311 of the first sub-diffusion protrusion 131 gradually decreases in the first direction Y and in the direction from the first diffusion region 11 toward the second diffusion region 121, and may also be.

The curved surface 1321 of the second sub-diffusion bump 132 is not limited to satisfy the functional relation 2, and other functional relations may be satisfied: the protrusion height of the curved surface 1321 of the second sub-diffusion protrusion 132 increases and then decreases in the direction from the first diffusion region 11 to the second diffusion region 121 along the first direction Y, or both.

In some embodiments, as shown in fig. 7, the plurality of first sub-diffusion protrusions 131 and the plurality of second sub-diffusion protrusions 132 are arranged in a rectangular array. By such an arrangement, the first diffusion region 11 can be arranged with more first sub-diffusion protrusions 131 and second sub-diffusion protrusions 132, thereby improving the diffusion efficiency of the first diffusion region 11 to light.

For example, as shown in fig. 7, 9 and 11, in the first direction Y, the distance between two adjacent first sub-diffusion protrusions 131 and the distance between two adjacent second sub-diffusion protrusions 132 are both 0.9 mm; in the second direction X, a distance between two adjacent first sub-diffusion protrusions 131 and a distance between two adjacent second sub-diffusion protrusions 132 are both 0.9 mm.

Wherein, the distance between two adjacent first sub-diffusion protrusions 131 is the distance between the centers of the curved surfaces 1311 of two adjacent first sub-diffusion protrusions 131; the distance between the adjacent two second sub-diffusion protrusions 132 is the distance between the centers of the curved surfaces 1321 of the adjacent two second sub-diffusion protrusions 132.

In some embodiments, as shown in fig. 7, the plurality of second diffusion protrusions 14 are in a rectangular array, the curved surface of each second diffusion protrusion 14 is a cylindrical surface, and each second diffusion protrusion 14 extends along the first direction Y. By such an arrangement, more second diffusion protrusions 14 can be arranged in the second diffusion region 121, thereby improving the diffusion efficiency of the second diffusion region 121 to light.

Illustratively, as shown in FIG. 7, the radius of the cylindrical surface of the second diffusion protrusion 14 is 5mm, and the height of the cylindrical surface protrusion is 0.04 mm. In the first direction Y, the distance between two adjacent second diffusion protrusions 14 is 2mm, that is, the distance between the centers of the cylindrical surfaces of two adjacent second diffusion protrusions 14; in the second direction X, the distance between two adjacent second diffusion protrusions 14 is 1.2 mm.

In some embodiments, as shown in fig. 7 and 12, fig. 12 is a partial enlarged view of the third diffusion region 122 of fig. 7. The plurality of third diffusion protrusions 15 are divided into a plurality of groups, each group includes seven third diffusion protrusions 15 distributed in a regular hexagon, six of the seven third diffusion protrusions 15 are located on the sides of the hexagon, and one third diffusion protrusion 15 is located inside the hexagon. As shown in fig. 13 and 14, fig. 13 is a schematic structural view of the third diffusion protrusion 15, and fig. 14 is a cross-sectional view of E-E of fig. 13. Each third diffusion protrusion 15 has a regular hexagonal shape in outline, and two adjacent third diffusion protrusions 15 are connected. The profile of the third diffusion protrusion 15 is designed into a regular hexagon, and each group of the third diffusion protrusions 15 are distributed in a hexagon shape, so that the third diffusion region 15 can be filled with more third diffusion protrusions 15 at the maximum efficiency, and the diffusion effect of the third diffusion region 15 on light can be improved.

Illustratively, as shown in fig. 12, the distance d1 between two adjacent third diffusion protrusions 15 in the first direction Y is 0.87mm, and the distance d2 in the second direction X is 1 mm.

In some embodiments, as shown in fig. 13 and 14, the third diffusion protrusion 15 has a spherical surface, and the spherical surface can diffuse light in multiple directions, so that the light diffusion effect of the third diffusion protrusion 15 can be further improved.

For example, as shown in FIG. 14, the radius of the spherical surface may be 4.5mm and the height h5 of the spherical protrusion may be 0.05 mm.

Of course, the third diffusion protrusion 15 may have other types of curved surfaces besides the spherical surface, and is not particularly limited herein.

As shown in fig. 7, the radius of the light emitting surface 1 is R1, and the radius of the second diffusion region 121 is R2; along the first direction Y, the size of the first sub-area 111 is H1, and the size of the second sub-area 112 is H2.

Wherein, R2/R1 is an important parameter, and R2/R1 should not be too large or too small. If R2/R1 is too large, the second diffusion region 121 is too small, and the third diffusion region 122 is too large, so that the light spot cannot be well prevented from forming sharp corners in the root region; if R2/R1 is too small, the second diffusion region 121 is too large, and the third diffusion region 122 is too small, so that the second diffusion region 121 tends to widen the main spot region, which is likely to fall outside the outer surface of the target 400, thereby easily causing light pollution.

Research shows that when the range of R2/R1 is 0.5-0.6, the sharp corner of the root area of the light spot can be eliminated, and the main light spot area is not easy to fall outside the outer facade of the target object 400.

Further research shows that when the ratio R2/R1 is 0.52, the sharp corner at the root area of the light spot can be avoided, and the main light spot area can be avoided from falling outside the facade of the target object 400.

H1/R1 and H2/R1 are also important parameters of the light-emitting surface 1, and H1/R1 and H2/R1 are not too large or too small. If H1/R1 and H2/R1 are too large or too small, the first sub-area 111 and the second sub-area 112 are too large or too small, so that the size ratio of the first sub-area 111 to the second sub-area 112 is out of order, and the light equalizing effect of the first diffusion area 11 on the root area of the light spot is poor.

The research shows that when the range of H1/R1 is 0.3-0.35, and the range of H2/R1 is 0.15-0.2, the size ratio of the first sub-area 111 to the second sub-area 112 is relatively harmonious, and the light-equalizing effect of the first diffusion area 11 on the root area of the light spot is relatively good.

Further research shows that when H1/R1 is 0.32 and H2/R1 is 0.18, the size ratio of the first sub-area 111 to the second sub-area 112 is more consistent, the first diffusion area 11 has a better light-equalizing effect on the root area of the light spot, and the brightness distribution of the root area of the light spot is more uniform.

In the embodiment that the polarized lens is a stretched body, as shown in fig. 15 and 16, the light emitting surface 1 includes a fourth diffusion region 16, a fifth diffusion region 17 and a sixth diffusion region 18 sequentially arranged along the first direction Y, the fourth diffusion region 16 is disposed on the first side of the first plane 4, and the sixth diffusion region 18 is disposed on the second side of the first plane 4; the first direction Y is perpendicular to the first plane 4.

A plurality of fourth diffusion protrusions 191 arranged in an array are disposed in the fourth diffusion region 16, and the fourth diffusion protrusions 191 have curved surfaces curved in the first direction Y. A plurality of fifth diffusion protrusions 194 arranged in an array are disposed in the fifth diffusion region 17, and each fifth diffusion protrusion 194 has a curved surface curved along the second direction X; the second direction X is parallel to the longitudinal direction of the polarized lens 100. A plurality of sixth diffusion protrusions 195 are arranged in an array in the sixth diffusion region 18.

By arranging the plurality of fourth diffusion protrusions 191 in the fourth diffusion area 16, as shown in fig. 16, when light passes through the fourth diffusion protrusions 16, the light can be scattered in the first direction Y by the curved surfaces of the fourth diffusion protrusions 191, and the brightness of the root area of the light spot on the outer vertical surface of the target 400 is prevented from being too high.

By providing the fifth diffusion protrusion 194 on the fifth diffusion region 17, as shown in fig. 3 and 7, when the light passes through the fifth diffusion protrusion 194, the curved surface of the fifth diffusion protrusion 194 can scatter the light in the second direction X to widen the root area of the light spot on the outer vertical surface of the object 400, so as to eliminate the sharp corner of the light spot in the root area.

By providing the sixth diffusion protrusion 195 on the sixth diffusion area 18, when the light passes through the sixth diffusion protrusion 195, the sixth diffusion protrusion 195 may scatter the light, so that the brightness transition of the main spot area on the outer surface of the object 400 is uniform.

It should be noted that: as shown in fig. 4 and 5, the light passing through the fourth diffusion area 16 and the fifth diffusion area 17 is irradiated on the outer vertical surface of the object 400 to form the base area of the spot, and the light passing through the sixth diffusion area 18 is irradiated on the outer vertical surface of the object 400 to form the main spot area.

In some embodiments, as in fig. 15 and 16, the fourth diffusion region 16 includes a first sub-diffusion region 161 and a second sub-diffusion region 162 arranged along the first direction Y, the second sub-diffusion region 162 being located between the first sub-diffusion region 161 and the fifth diffusion region 17;

the fourth diffusion bump 16 includes a plurality of first sub-bumps 192 disposed in the first sub-diffusion region 161 and arranged in an array, and a plurality of second sub-bumps 193 disposed in the second sub-diffusion region 162 and arranged in an array, and each of the first sub-bumps 192 and the second sub-bumps 193 has a curved surface curved along the first direction Y;

as shown in fig. 16, 17 and 18, fig. 17 is an enlarged view of the first sub-protrusion 192 in the first sub-diffusion 161, and fig. 18 is an enlarged view of the second sub-protrusion 193 in the second sub-diffusion 162. In a cross section perpendicular to the first plane 4 and perpendicular to the length direction of the polarized lens 100, along the first direction Y and a direction from the fourth diffusion region 16 to the fifth diffusion region 17, the protrusion height of the curved surface 1921 of the first sub-protrusion 192 gradually decreases, and the protrusion height of the curved surface 1931 of the second sub-protrusion 193 increases and then decreases.

Since the protrusion height of the curved surface 1921 of the first sub-protrusion 192 gradually decreases along the first direction Y, the protrusion height of the curved surface 1931 of the second sub-protrusion 193 increases and then decreases, that is: the curved surface 1931 of the second sub-protrusion 193 is in an arc shape, the curved surface 1921 of the first sub-protrusion 192 is in a half arc shape, so that the degree of diffusion of the curved surface 1931 of the second sub-protrusion 193 in the arc shape to light rays is large, the degree of diffusion of the curved surface 1921 of the first sub-protrusion 192 in the half arc shape to light rays is small, and the light rays are diffused in different degrees through the first sub-protrusion 192 and the second sub-protrusion 193, so that the luminance transition of the root area of the light spot on the outer vertical surface of the target object 400 is uniform.

As shown in fig. 15, 17 and 18, the first sub-protrusions 192 and the second sub-protrusions 193 may be both long, the plurality of first sub-protrusions 192 are arranged along the first direction Y, and the plurality of second sub-protrusions 193 are arranged along the first direction Y. The types of the curved surfaces of the first sub-protrusion 192 and the second sub-protrusion 193 and the specific parameters can refer to the settings in the embodiments shown in fig. 2 and 3, and are not described again.

As shown in fig. 15, the curved surface of the fifth diffusion protrusion 194 may be a cylindrical surface, the fifth diffusion protrusion 194 extends along the first direction Y, and the plurality of fifth diffusion protrusions 194 are arranged along the second direction Y. The parameters of the curved surface of the fifth diffusion protrusion 194 and the arrangement intervals may specifically refer to the arrangement in the embodiment shown in fig. 2 and 3, and are not described herein again.

As shown in fig. 15 and 19, fig. 19 is an enlarged view of the sixth diffusion protrusion 195 of fig. 16. The curved surface of the sixth diffusion protrusion 195 may be a cylindrical surface, the fifth diffusion protrusion 195 extends in the second direction X, and the plurality of sixth diffusion protrusions 195 is arranged in the first direction Y.

As shown in fig. 16, in the first direction Y, the size of the light emitting surface 1 is h, the size of the first sub diffusion region 161 is h1, the size of the second sub diffusion region 162 is h2, the size of the fifth diffusion region 17 is h3, and the size of the sixth diffusion region 18 is h 4.

Wherein h1/h and h2/h are important parameters of the light emitting surface 1, h1/h and h2/h are not too large or too small, and if h1/h and h2/h are too large or too small, the first sub-diffusion area 161 and the second sub-diffusion area 162 are too large or too small, so that the size ratio of the first sub-diffusion area 161 and the second sub-diffusion area 162 is not adjusted, and the light equalizing effect of the fourth diffusion area 16 on the root area of the light spot is not good easily.

Researches show that when the range of h1/h is 0.10-0.2 and the range of h2/h is 0.10-0.15, the size ratio of the first sub-diffusion area 161 to the second sub-diffusion area 162 is relatively coordinated, and the light equalizing effect of the fourth diffusion area 16 on the root area of the light spot is relatively good. Further research shows that when H1/H is 0.15 and H2/R1 is 0.1, the size ratio of the first sub-diffusion region 161 to the second sub-diffusion region 162 is more consistent, the fourth diffusion region 16 has a better light-equalizing effect on the root area of the light spot, and the brightness distribution of the root area of the light spot is more uniform.

h3/h and h4/h are also important parameters of the light-emitting surface 1, h3/h and h4/h are not too large or too small, if h3/h is too small, h4/h is too large, so that the area of the fifth diffusion area 17 is smaller, and the area of the sixth diffusion area 18 is larger, so that the light spots cannot be well prevented from forming sharp corners in the root area; if h3/h is too large and h4/h is too small, the area of the fifth diffusion region 17 is large, the area of the sixth diffusion region 18 is small, and the fifth diffusion region 17 tends to widen the main spot area, which is likely to fall outside the outer surface of the target 400, and thus tends to cause light pollution.

Research shows that when the range of h3/h is 0.4-0.6 and the range of h4/h is 0.2-0.3, the proportion of the fifth diffusion area 17 to the sixth diffusion area 18 is better, the sharp corner of the root area of the light spot can be eliminated, and the main light spot area is not easy to fall outside the outer vertical surface of the target object 400. Further research shows that when h3/h is 0.5 and h4/h is 0.25, the ratio of the fifth diffusion area 17 to the sixth diffusion area 18 is optimal, so that the root area of the light spot is prevented from having sharp corners, and the main light spot area is prevented from falling outside the outer vertical surface of the target 400.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A polarized lens, comprising:

the light emitting end (P1) is provided with a light emitting surface (1);

a light entrance end (P2) provided with a light entrance cavity (2), wherein the light entrance cavity (2) is provided with a cavity opening (23), a cavity bottom surface (21) opposite to the cavity opening (23) and a cavity side surface (22) arranged at the periphery of the cavity bottom surface (21);

a lens side face (3) located between the light entry end (P2) and the light exit end (P1);

characterized in that said cavity bottom surface (21) comprises:

a first cavity floor (211) located on a first side of a first plane (4) and configured to deflect light impinging on the first cavity floor (211) towards the light exit surface (1) in a direction away from the first plane (4); the first plane (4) is a plane passing through each point on the optical axis (5) of the polarized lens (100) and intersecting the cavity bottom surface (21);

a second cavity bottom surface (212) located on a second side of the first plane (4) and configured to deflect light irradiated onto the second cavity bottom surface (212) to the light emitting surface (1) in a direction close to the first plane (4);

the lens side (3) comprises:

a first lens side surface (31) located on a first side of the first plane (4) and configured to reflect light impinging on the first lens side surface (31) towards the light exit surface (1) in a direction away from the first plane (4);

a second lens side surface (32) located on a second side of the first plane (4) and configured to reflect light impinging on the second lens side surface (32) towards the light exit surface (1) in a direction approaching the first plane (4).

2. A polarized lens according to claim 1,

in a cross-section perpendicular to the first plane (4) and parallel to the optical axis (5),

the first cavity floor (211) has a first end point (A1) close to the first plane (4) and a second end point (A2) far from the first plane (4), and the distance from the first end point (A1) to the cavity opening (23) is smaller than the distance from the second end point (A2) to the cavity opening (23);

the second cavity floor (212) has a third end point (A3) close to the first plane (4) and a fourth end point (A4) far from the first plane (4), and the distance from the third end point (A3) to the cavity opening (23) is smaller than the distance from the fourth end point (A4) to the cavity opening (23);

an angle (theta) between a straight line (71) passing through the first end point (A1) and the second end point (A2) and the first plane (4)₁) Greater than the angle (theta) between the line (72) passing through the third end point (A3) and the fourth end point (A4) and the first plane (4)₂)。

3. A polarized lens according to claim 1,

the first lens side (31) has a fifth end (A5) close to the light exit surface (1) and a sixth end (A6) far away from the light exit surface (1), and the distance from the fifth end (A5) to the first plane (4) is greater than the distance from the sixth end (A6) to the first plane (4);

the second lens side (32) has a seventh end (A7) close to the light exit surface (1) and an eighth end (A8) far away from the light exit surface (1), and the distance from the seventh end (A7) to the first plane (4) is greater than the distance from the eighth end (A8) to the first plane (4);

an angle (theta) between a straight line (61) passing through the fifth endpoint (A5) and the sixth endpoint (A6) and the first plane (4)₃) Greater than a straight line (6) passing through the seventh end point (A7), the eighth end point (A8)2) An angle (theta) to the first plane (4)₄)。

4. A polarizing lens according to any one of claims 1 to 3,

the light emitting surface (1) is circular and comprises:

a first diffusion region (11) which is in a shape of a minor arc bow and is positioned on a first side of the first plane (4), wherein a plurality of first diffusion protrusions (13) which are arranged in an array are arranged in the first diffusion region (11), and the first diffusion protrusions (13) are provided with curved surfaces (1311, 1321) which are bent in a first direction (Y); the first direction (Y) is perpendicular to the first plane (4);

the second diffusion area (121) is located in the central area of the light emitting surface (1) and is connected with the first diffusion area (11), a plurality of second diffusion protrusions (14) which are arranged in an array mode are arranged in the second diffusion area (121), and each second diffusion protrusion (14) is provided with a curved surface which is bent in the second direction (X); the second direction (X) is perpendicular to the first direction (Y) and the optical axis (5);

the third diffusion zone (122) is located on the periphery of the second diffusion zone (121) and connected with the first diffusion zone (11), the third diffusion zone (122) and the area formed by the second diffusion zone (121) are in a major arc bow shape, and a plurality of third diffusion protrusions (15) arranged in an array are arranged in the third diffusion zone (122).

5. A polarized lens according to claim 4,

the first diffusion region (11) comprises a first sub-region (111) and a second sub-region (112) arranged along the first direction (Y), the second sub-region (112) being located between the first sub-region (111) and the second diffusion region (121);

the first diffusion protrusion (13) comprises a plurality of first sub-diffusion protrusions (131) which are positioned in the first sub-area (111) and arranged in an array, and a plurality of second sub-diffusion protrusions (132) which are positioned in the second sub-area (112) and arranged in an array, and each of the first sub-diffusion protrusions (131) and the second sub-diffusion protrusions (132) has a curved surface which is curved in the first direction (Y);

in a cross section perpendicular to the first plane (4) and parallel to the optical axis (5), along the first direction (Y) and a direction from the first diffusion region (11) to the second diffusion region (121), a protrusion height of the curved surface (1311) of the first sub-diffusion protrusion (131) is gradually decreased, and a protrusion height of the curved surface (1321) of the second sub-diffusion protrusion (132) is increased and then decreased.

6. A polarized lens according to claim 5,

the radius of the light-emitting surface (1) is R1, and the radius of the second diffusion area (121) is R2; -along said first direction (Y), said first sub-zone (111) has a size H1 and said second sub-zone (112) has a size H2;

wherein, the range of R2/R1 is 0.5-0.6;

H1/R1 is in the range of 0.3-0.35;

H2/R1 is in the range of 0.15-0.2.

7. A polarizing lens according to any one of claims 1 to 3,

the polarized lens (100) is in a long strip shape, and the length direction of the polarized lens (100) is parallel to the first plane (4);

the light emitting surface (1) is rectangular and comprises a fourth diffusion area (16), a fifth diffusion area (17) and a sixth diffusion area (18) which are sequentially arranged along a first direction (Y), the fourth diffusion area (16) is arranged on the first side of the first plane (4), and the sixth diffusion area (18) is arranged on the second side of the first plane (4); the first direction (Y) is perpendicular to the first plane (4);

a plurality of fourth diffusion protrusions (191) are arranged in the fourth diffusion region (16) in an array mode, and the fourth diffusion protrusions (191) are provided with curved surfaces (1921, 1931) which are bent along the first direction (Y);

a plurality of fifth diffusion bulges (194) are arranged in the fifth diffusion area (17) in an array mode, and each fifth diffusion bulge (194) is provided with a curved surface bent along the second direction (X); the second direction (X) is parallel to the length direction of the polarized lens (100);

a plurality of sixth diffusion bulges (195) are arranged in an array in the sixth diffusion area (18).

8. A polarized lens according to claim 7,

the fourth diffusion region (16) includes a first sub-diffusion region (161) and a second sub-diffusion region (162) arranged along the first direction (Y), the second sub-diffusion region (162) being located between the first sub-diffusion region (161) and the fifth diffusion region (17);

the fourth diffusion protrusion (191) comprises a plurality of first sub-protrusions (192) which are positioned in the first sub-diffusion region (161) and arranged in an array, and a plurality of second sub-protrusions (193) which are positioned in the second sub-diffusion region (162) and arranged in an array, and each of the first sub-protrusions (192) and the second sub-protrusions (193) has a curved surface which is curved along the first direction (Y);

in a cross section perpendicular to the first plane (4) and perpendicular to the length direction of the polarized lens (100), along the first direction (Y) and a direction in which the fourth diffusion region (16) points to the fifth diffusion region (17), the protrusion height of the curved surface (1921) of the first sub-protrusion (192) gradually decreases, and the protrusion height of the curved surface (1931) of the second sub-protrusion (193) increases and then decreases.

9. A polarized lens according to claim 8,

in the first direction (Y), the light exit surface (1) has a size h, the first sub diffusion region (161) has a size h1, the second sub diffusion region (162) has a size h2, the fifth diffusion region (17) has a size h3, and the sixth diffusion region (18) has a size h 4;

wherein the range of h1/h is 0.10-0.2;

h2/h is in the range of 0.10-0.15;

h3/h is in the range of 0.4-0.6;

h4/h is in the range of 0.2-0.3.

10. A light fixture, comprising:

a circuit board (200);

the polarized lens (100) of any of claims 1 to 9, the polarized lens (100) being disposed on one side of the circuit board (200);

the light-emitting element (300) is arranged on the circuit board (200) and extends into the light incidence cavity (2) of the polarized lens (100).