CN214580893U - Lens and lamp - Google Patents

Abstract

The utility model relates to the technical field of lighting, in particular to a lens and a lamp; the lamp comprises a light-emitting component, the light-emitting component comprises a lens, the lens comprises a collimating lens and a catadioptric lens which are connected with each other, one end, far away from the catadioptric lens, of the collimating lens is provided with an incident hole, the incident hole is used for arranging a lamp bead, under the condition that the lamp bead is arranged in the incident hole, a first part of light emitted by the lamp bead is incident to the side wall of the incident hole, is reflected by the side wall of the incident hole and then sequentially reflected by the side wall of the collimating lens and the side wall of the catadioptric lens, and is transmitted towards the direction far away from the lamp bead through the refraction of a catadioptric surface; the second part of light that the lamp pearl sent incides to the lateral wall of going into the perforation, passes through the lateral wall of going into the perforation after refraction in proper order through collimating lens's lateral wall and the reflection of catadioptric surface, and the refraction orientation that passes through the lateral wall of catadioptric lens spreads towards the direction that is close to the lamp pearl. The lens can improve the problem of uneven light and shade distribution of the light emitted by the lamp, and improves user experience.

Description

Lens and lamp

Technical Field

The utility model relates to the field of lighting technology, particularly, relate to a lens and lamps and lanterns.

Background

With the development of lighting technology, LED lamps have been developed into the main lighting products in the market due to their characteristics of high efficiency, energy saving and environmental protection. A cylindrical light emitting lamp is one of commonly used LED lamps; the luminous lamps and lanterns of cylindricality that correlation technique provided generally divide into two kinds, one is bottom installation lamp plate and lamp pearl, directly places cylindrical printing opacity cover at the outer lane, and the other one is that the lamp plate perpendicular to bottom is placed, and the lamp plate is parallel with printing opacity cover.

However, the cylindrical light-emitting lamp provided by the related art has the problem of uneven light and shade distribution, and further influences user experience.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lens and lamps and lanterns, lens can improve the luminous light and shade inhomogeneous problem that distributes of lamps and lanterns, promote user experience.

The embodiment of the utility model is realized like this:

in a first aspect, the present invention provides a lens, comprising:

a collimating lens;

the catadioptric lens is connected with the collimating lens, and the catadioptric lens and the collimating lens are distributed on two sides of the set plane; wherein the content of the first and second substances,

the collimating lens is provided with an incident hole at one end far away from the catadioptric lens, the incident hole is used for arranging a lamp bead, and the outer diameter of the collimating lens is gradually increased from one end far away from the set plane to one end close to the set plane; the end of the catadioptric lens, which is far away from the collimating lens, is provided with a catadioptric surface, and the outer diameter of the catadioptric lens is gradually reduced from the end close to the set plane to the end far away from the set plane;

under the condition that the lamp beads are arranged in the entry holes, a first part of light rays emitted by the lamp beads are incident to the side walls of the entry holes, are reflected by the side walls of the entry holes, then are reflected by the side walls of the collimating lenses and the side walls of the catadioptric lenses in sequence, and are transmitted towards the direction far away from the lamp beads through the refraction of the catadioptric surfaces; the second part of light that the lamp pearl sent incides to the lateral wall of going into the perforation, passes through the lateral wall of going into the perforation after refraction in proper order through collimating lens's lateral wall and the reflection of catadioptric surface, and the refraction orientation that passes through the lateral wall of catadioptric lens spreads towards the direction that is close to the lamp pearl.

In an optional embodiment, the collimating lens is further provided with an incident convex surface, and the incident convex surface is located in the incident hole and is opposite to the lamp bead arranged in the incident hole; the third part of light emitted by the lamp beads is incident to the incident convex surface and is transmitted towards the direction far away from the lamp beads through the collimating lens and the catadioptric lens in sequence under the condition that the lamp beads are arranged in the incident holes.

In an optional embodiment, the catadioptric lens is further provided with a light-emitting concave surface, and the catadioptric surface is connected with the light-emitting concave surface; the third part of light emitted by the lamp beads is incident to the incident convex surface and is transmitted towards the direction far away from the lamp beads through the refraction of the light-emitting concave surface after sequentially passing through the collimating lens and the refraction and reflection lens under the condition that the lamp beads are arranged in the incident holes.

In an alternative embodiment, the catadioptric surface is tangential to the concave light-exit surface.

In an alternative embodiment, the central axis of the lens is perpendicular to the setting plane, the included angle between the sidewall of the catadioptric lens and the setting plane is α, the included angle between the extension plane of the catadioptric surface and the setting plane is β, the angle of the concave light-emitting surface is a,

α and β satisfy: alpha > Asin (1/n), beta > Asin (1/n), and 180-2 alpha-beta < Asin (1/n), where n is the refractive index of the material of the lens.

In a second aspect, the present invention provides a lamp, including a cylindrical lamp cover and a light emitting assembly disposed in the cylindrical lamp cover; wherein, light emitting component includes lamp pearl, lamp plate and aforementioned embodiment's lens, and lamp pearl and lens all set up in the lamp plate, and the lamp pearl inlays and locates in the incident hole.

In an optional embodiment, the collimating lens is further provided with an incident convex surface, and the incident convex surface is located in the incident hole and is opposite to the lamp bead arranged in the incident hole; the catadioptric lens is also provided with a light-emitting concave surface, and the catadioptric surface is connected with and tangent to the light-emitting concave surface;

the third part of light that the lamp pearl sent incides to the incident convex surface to after collimating lens and refraction and reflection lens in proper order, the direction propagation of keeping away from the lamp pearl is faced through the refraction of light-emitting concave surface.

In optional implementation, the cylindrical lamp shade is cylindrical lamp shade, the axis of lens sets up with setting for the plane is perpendicular, and the angle of the concave surface of light-emitting is A, and A satisfies: tan (A/2) is not less than (R/2)/H, wherein R is the diameter of the cylindrical lampshade, and H is the height of the cylindrical lampshade.

In an alternative embodiment, the angle between the sidewall of the catadioptric lens and the setting plane is α, the angle between the extension plane of the catadioptric surface and the setting plane is β,

α and β satisfy: alpha > Asin (1/n), beta > Asin (1/n), and 180-2 alpha-beta < Asin (1/n), where n is the refractive index of the material of the lens.

In an alternative embodiment, the light emitting assembly is disposed at one end of the cylindrical lamp housing in the direction of extension of the axis of the cylindrical lamp housing.

The utility model discloses beneficial effect of lens includes: the embodiment of the utility model provides a lens include collimating lens and the catadioptric lens who is connected with collimating lens, and catadioptric lens and collimating lens distribute in setting for the planar both sides; the collimating lens is provided with an incident hole at one end far away from the catadioptric lens, the incident hole is used for arranging a lamp bead, and the outer diameter of the collimating lens is gradually increased from one end far away from the set plane to one end close to the set plane; the end of the catadioptric lens, which is far away from the collimating lens, is provided with a catadioptric surface, and the outer diameter of the catadioptric lens is gradually reduced from the end close to the set plane to the end far away from the set plane; under the condition that the lamp beads are arranged in the entry holes, a first part of light rays emitted by the lamp beads are incident to the side walls of the entry holes, are reflected by the side walls of the entry holes, then are reflected by the side walls of the collimating lenses and the side walls of the catadioptric lenses in sequence, and are transmitted towards the direction far away from the lamp beads through the refraction of the catadioptric surfaces; a second part of light emitted by the lamp beads is incident to the side wall of the entry hole, reflected by the side wall of the collimating lens and the catadioptric surface in sequence, and then refracted by the side wall of the catadioptric lens to be transmitted towards the direction close to the lamp beads; thus, the light that can utilize lens to ensure that the lamp pearl to send can propagate to the direction of keeping away from the lamp pearl reliably and the direction that is close to the lamp pearl, improves the inhomogeneous problem of luminous light and shade, promotes user experience.

The utility model discloses beneficial effect of lamps and lanterns includes: the embodiment of the utility model provides a lamp which comprises a cylindrical lampshade and a light-emitting component arranged in the cylindrical lampshade; the light-emitting component comprises a lamp bead, a lamp panel and the lens, the lamp bead and the lens are arranged on the lamp panel, and the lamp bead is embedded in the incident hole; because lens can ensure that the light that the lamp pearl sent propagates to the direction of keeping away from the lamp pearl reliably and the direction that is close to the lamp pearl, improve the luminous uneven problem of light and shade of lamps and lanterns, promote user experience.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a lamp in an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural view of a lamp according to another embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 5 is a schematic structural diagram of a light emitting device according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5;

fig. 7 is a schematic structural diagram of a lens at a first viewing angle according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a lens at a second viewing angle according to an embodiment of the present invention;

FIG. 9 is a cross-sectional view taken in the direction D-D of FIG. 8;

fig. 10 is a cross-sectional view of a lens in an embodiment of the invention.

Icon: 010-a lamp; 100-a light emitting component; 110-a lamp panel; 120-lamp bead; 121-a first portion of light; 122-a second portion of light; 123-a third portion of light; 200-a lens; 210-a collimating lens; 211-entry hole; 220-a catadioptric lens; 221-a catadioptric surface; 222-a convex incident surface; 223-a light-emitting concave surface; 224-a groove; 230-setting a plane; 240-central axis; 300-cylindrical lamp shade.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and fig. 2, the present embodiment provides a lamp 010, which includes a cylindrical lamp cover 300 and a light emitting assembly 100 disposed in the cylindrical lamp cover 300; wherein, light emitting component 100 includes lamp pearl 120 and lamp plate 110, and lamp pearl 120 sets up in lamp plate 110, lamp plate 110 and cylindrical lamp shade 300 fixed connection, and the light that lamp pearl 120 sent can propagate out through cylindrical lamp shade 300. Optionally, the lamp bead 120 is an LED lamp bead.

The cylindrical lampshade 300 of the embodiment is a cylindrical lampshade, and along the axial direction of the cylindrical lampshade, the lamp panel 110 is arranged at one end of the cylindrical lampshade, and the lamp bead 120 is opposite to the other end of the cylindrical lampshade. Of course, referring to fig. 3 and 4, in other embodiments, the lamp panel 110 is disposed in the cylindrical lampshade, the lamp panel 110 extends along the axial direction of the cylindrical lampshade, and the lamp bead 120 is opposite to the annular sidewall of the cylindrical lampshade.

It should be understood that in other embodiments, the cylindrical lampshade 300 may also be a prismatic lampshade, such as: triangular prism, quadrangular prism, pentagonal prism, etc., which are not particularly limited herein; in other embodiments, the lamp cover of the light fixture 010 may also be a different lamp cover, such as: the cross section of the lampshade is in the shape of a pentagram or the like, and is not particularly limited herein.

Referring to fig. 5 and 6, in the embodiment, the light emitting assembly 100 further includes a lens 200, the lens 200 is provided with an entrance hole 211, the lens 200 is disposed on the lamp panel 110, and the lamp bead 120 is embedded in the entrance hole 211, so that light emitted by the lamp bead 120 can be transmitted through the lens 200.

It should be noted that, the number of the lamp beads 120 and the number of the lenses 200 that are arranged on the lamp panel 110 can be selected according to the needs, for example: the number of the lamp beads 120 and the lenses 200 may be 1, 2, 10, 20, etc., and is not particularly limited herein. The lamp beads 120 and the lenses 200 of the embodiment are the same in number, the lamp panel 110 is provided with a plurality of lamp beads 120 and a plurality of lenses 200, and the plurality of lamp beads 120 and the plurality of lenses 200 are arranged in a one-to-one correspondence manner. Of course, in other embodiments, the number of the lamp beads 120 and the number of the lenses 200 may be different, and when the number of the lamp beads 120 is greater than the number of the lenses 200, some of the lamp beads 120 are disposed in one-to-one correspondence with the lenses 200, and the rest of the lamp beads 120 are not disposed in correspondence with the lenses 200; under the condition that the quantity of lamp pearl 120 is less than the quantity of lens 200, set up in the partial lens 200 of lamp plate 110 not with the cooperation of lamp pearl 120, partial lens 200 is idle promptly.

The mode of the lens 200 disposed on the lamp panel 110 can be selected as required, and the lens 200 of the embodiment is adhered to the lamp panel 110 by an adhesive, so that the lamp 010 is convenient to assemble; in other embodiments, the lens 200 may also be clamped to the lamp panel 110, and the like, which is not limited herein.

The lamp panel 110 is set up in the mode of cylindricality lamp shade 300 and the lamp pearl 120 sets up in the mode of lamp panel 110 all similar with the correlation technique, for example: the lamp panel 110 may be fixedly connected to the pillar-shaped lamp cover 300 by fasteners such as screws, so that the lamp 010 is simply assembled, which is not described herein again.

Referring to fig. 7 to 9, the lens 200 of the present embodiment includes a collimating lens 210 and a catadioptric lens 220 connected to the collimating lens 210, and the catadioptric lens 220 and the collimating lens 210 are distributed on two sides of a setting plane 230; wherein, one end of the collimating lens 210 far away from the catadioptric lens 220 is provided with an incident hole 211, the incident hole 211 is used for arranging the lamp bead 120, and the outer diameter of the collimating lens 210 gradually increases from one end far away from the setting plane 230 to one end close to the setting plane 230; a catadioptric surface 221 is arranged at one end of the catadioptric lens 220 far away from the collimating lens 210, and the outer diameter of the catadioptric lens 220 gradually decreases from one end close to the setting plane 230 to one end far away from the setting plane 230; under the condition that the lamp beads 120 are arranged in the incident holes 211, namely under the condition that the lamp beads 120 are embedded in the incident holes 211, a first part of light rays 121 emitted by the lamp beads 120 are incident to the side walls of the incident holes 211, are reflected by the side walls of the incident holes 211, then are reflected by the side walls of the collimating lenses 210 and the side walls of the catadioptric lenses 220 in sequence, and then are refracted by the catadioptric surfaces 221 to be transmitted towards the direction far away from the lamp beads 120; the second part of the light 122 emitted by the lamp bead 120 is incident to the sidewall of the incident hole 211, is refracted by the sidewall of the incident hole 211, then is reflected by the sidewall of the collimating lens 210 and the catadioptric surface 221 in sequence, and is refracted by the sidewall of the catadioptric lens 220 to propagate toward the direction close to the lamp bead 120. So, can utilize lens 200 to ensure that the light that lamp pearl 120 sent can propagate to the direction of keeping away from lamp pearl 120 and the direction that is close to lamp pearl 120 reliably, improve the inhomogeneous problem of luminous light and shade, promote user experience.

Further, referring to fig. 9, the collimating lens 210 of the present embodiment is further provided with an incident convex surface 222, and the incident convex surface 222 is located in the incident hole 211 and is opposite to the lamp bead 120 disposed in the incident hole 211; under the condition that the lamp bead 120 is disposed in the incident hole 211, a third part of light 123 emitted by the lamp bead 120 is incident on the incident convex surface 222, and sequentially passes through the collimating lens 210 and the catadioptric lens 220 to propagate towards a direction away from the lamp bead 120. So set up, can utilize lens 200 to ensure that the light that lamp pearl 120 sent is propagated towards a plurality of directions more reliably to improve the homogeneity of the luminous light and shade distribution of lamps and lanterns 010, promote user experience.

Still further, the catadioptric lens 220 of the present embodiment is further provided with a light-emitting concave surface 223, the catadioptric surface 221 is connected to the light-emitting concave surface 223, the light-emitting concave surface 223 is opposite to the setting plane 230, one end of the catadioptric surface 221 close to the setting plane 230 is connected to the light-emitting concave surface 223, and one end of the catadioptric surface 221 away from the setting plane 230 is connected to a side wall of the catadioptric lens 220; under the condition that the lamp beads 120 are arranged in the incident holes 211, the third part of light rays 123 emitted by the lamp beads 120 are incident to the incident convex surface 222, sequentially pass through the collimating lens 210 and the catadioptric lens 220, and are refracted by the light-emitting concave surface 223 to be transmitted towards the direction far away from the lamp beads 120. So set up, the diffusion in order to realize light can be passed through the refraction of light-emitting concave surface 223 to the third part light 123 that can make lamp pearl 120 send, is favorable to improving luminance and light and shade homogeneity, promotes user experience.

It should be noted that, a groove 224 is disposed at an end of the catadioptric lens 220 away from the collimating lens 210, and from an end close to the setting plane 230 to an end away from the setting plane 230, an aperture of the groove 224 gradually increases, and the groove 224 includes a light-emitting concave surface 223 and a catadioptric surface 221 which are sequentially connected.

The lens 200 of the present embodiment is integrally formed, that is, the collimating lens 210 and the catadioptric lens 220 are integrally formed and made of the same material; alternatively, the material of the lens 200 may be Polycarbonate (PC), polymethyl methacrylate (PMMA), etc., and is not particularly limited herein.

Please refer to fig. 9 and 10, the central axis 240 of the lens 200 is perpendicular to the setting plane 230, and the first part of the light 121 emitted by the lamp bead 120 refers to: the included angle between the light rays emitted by the lamp beads 120 and the central axis 240 of the lens 200 is 30-60 degrees; the second portion of light 122 refers to: the included angle between the light emitted by the lamp bead 120 and the central axis 240 of the lens 200 is 60-90 degrees; and the third portion of light 123 is: the light ray emitted by the lamp bead 120 forms an angle of 0-30 degrees with the central axis 240 of the lens 200.

Further, the sidewall of the incident hole 211 comprises a first portion and a second portion connected to each other, wherein the first portion is close to the incident convex surface 222, that is, the first portion is located between the second portion and the incident convex surface 222, the first portion 121 emitted by the lamp bead 120 is incident from the first portion of the sidewall, and the second portion 122 emitted by the lamp bead 120 is incident from the second portion of the sidewall.

The LED lamp that correlation technique provided, the lamp plate comprises a lamp plate, set up in the LED lamp pearl of lamp plate and cover and locate LED lamp pearl and the outside cylindricality printing opacity cover of lamp plate, wherein, along the axial of cylindricality printing opacity cover, the lamp plate sets up in the one end of cylindricality printing opacity cover, the lamp pearl is relative with the other end of cylindricality printing opacity cover, light is sent by LED lamp pearl, direct incidence cylindricality printing opacity cover carries out the diffusion once, because LED lamp pearl is luminous for lambert type usually, light can not be even hits the lateral wall of cylindricality printing opacity cover, the light of the lateral wall of the one end of lamp plate is kept away from to the cylindricality printing opacity cover is dark, the light that the one end lateral wall of cylindricality printing opacity cover is close to the lamp plate is bright, cylindricality printing opacity cover light and shade distributes inhomogeneously promptly, influence user experience. When the lamp bead 120 of the lamp 010 of this embodiment emits light, a first part of light 121 emitted by the lamp bead 120 passes through the lens 200 and propagates towards a direction away from the lamp bead 120, so that the first part of light 121 can strike a side wall of the cylindrical lampshade 300 that is away from the lamp panel 110, a second part of light 122 emitted by the lamp bead 120 passes through the lens 200 and propagates towards a direction close to the lamp bead 120, so that the second part of light can strike a side wall of the cylindrical lampshade 300 that is close to the lamp panel 110, and a third part of light 123 emitted by the lamp bead 120 passes through the lens 200 and propagates towards a direction away from the lamp panel 110, so that the third part of light 123 can strike an end face of the cylindrical lampshade 300 that is away from the lamp panel 110, and thus, both the side wall of the end of the cylindrical lampshade 300 that is close to the lamp panel 110 and the side wall of the end that is away from the lamp panel 110 can emit light bright enough, and further improving uniformity of light and shade distribution of the side wall of the cylindrical lampshade 300, the user experience is improved.

Another kind of LED lamp that correlation technique provided, the lamp panel comprises a lamp plate, set up in the LED lamp pearl of lamp panel and cover and locate LED lamp pearl and the outside cylindricality printing opacity cover of lamp panel, wherein, the lamp panel extends along the axial of cylindricality printing opacity cover, the lamp pearl is relative with the lateral wall of cylindricality printing opacity cover, light is sent by the LED lamp pearl, direct incidence cylindricality printing opacity cover carries out diffusion once, because the lamp pearl is not relative with the axial both ends of cylindricality printing opacity cover, the event is the dark space along the axial both ends of cylindricality printing opacity cover, and then forms the inhomogeneous light and shade distribution condition, influence user experience. In an embodiment that the lamp panel 110 disposed on the cylindrical lamp shade 300 extends along the axial direction of the cylindrical lamp shade 300, and the lamp panel 110 is provided with the lens 200, and the lamp bead 120 is embedded in the incident hole 211 of the lens 200, when the lamp bead 120 opposite to the sidewall of the cylindrical lamp shade 300 emits light, a first part of light 121 emitted by the lamp bead 120 passes through the lens 200 and propagates towards a direction away from the lamp bead 120, so that the first part of light 121 can reach both ends of the cylindrical lamp shade 300 in the axial direction, a second part of light 122 emitted by the lamp bead 120 passes through the lens 200 and propagates towards a direction close to the lamp bead 120, so that the second part of light can reach both ends of the cylindrical lamp shade 300 in the axial direction, and a third part of light 123 emitted by the lamp bead 120 passes through the lens 200 and propagates towards a direction away from the lamp panel 110, so that the third part of light 123 can reach the sidewall of the cylindrical lamp shade 300; therefore, the side wall and the axial two ends of the fixation lampshade can emit light which is bright enough, the problem that the two ends of the cylindrical lampshade 300 are dark areas is solved, the light and shade of the cylindrical lampshade 300 are uniform in distribution, and user experience is improved.

In this embodiment, referring to fig. 10, the reflection surface 221 is tangent to the light-emitting concave surface 223; with the arrangement, the first part of light 121 emitted by the lamp bead 120 is incident from the side wall of the incident hole 211, and is reflected by the side wall of the collimating lens 210 and the side wall of the catadioptric lens 220 in sequence, and then is reliably refracted by the catadioptric surface 221; and the second part of light 122 emitted by the lamp bead 120 is incident from the sidewall of the incident hole 211 and reflected by the sidewall of the collimating lens 210, and then is reliably reflected to the sidewall of the catadioptric lens 220 by the catadioptric surface 221 for refraction.

Further, the angle of the light-emitting concave surface 223 of the embodiment is a, and a satisfies tan (a/2) ≧ R/2/H, where R is the diameter of the cylindrical lampshade, specifically, R is the diameter of one axial end face of the cylindrical lampshade, and H is the height of the cylindrical lampshade, that is, H is the length of the axial extension direction of the cylindrical lampshade. So set up, the third part light 123 that sends at lamp pearl 120 is from the incidence convex surface 222 incidence to become the collimation light in collimating lens 210, when refracting through light-emitting concave surface 223, diffusion again, can ensure that light-emitting concave surface 223 expands light reliably and scatters, and then ensures the luminous homogeneity of terminal surface of cylindrical lampshade, improves the problem that the dark space appears in cylindrical lampshade's terminal surface, improves user experience.

The angle a of the concave light-emitting surface 223 may be: the circumferential angle of the concave light exit surface 223 is defined as a cross-section perpendicular to the setting plane 230 and passing through the central axis 240 of the lens 200.

Referring to fig. 10, in the present embodiment, an included angle between the sidewall of the catadioptric lens 220 and the setting plane 230 is α, an included angle between the extension plane of the catadioptric surface 221 and the setting plane 230 is β, and α and β satisfy: alpha > Asin (1/n), beta > Asin (1/n), and 180 ° -2 alpha-beta < Asin (1/n); where n is the refractive index of the material of the lens 200. With the arrangement, the first part of light 121 emitted by the lamp bead 120 can be ensured to be incident from the incident hole 211, and after being reflected totally by the side wall of the collimating lens 210 to be collimated light, the collimated light is reliably reflected totally by the side wall of the catadioptric lens 220 and then refracted by the catadioptric surface 221, so that the light-emitting reliability is ensured; moreover, the second part of the light 122 emitted by the lamp bead 120 can be ensured to be incident from the incident hole 211, and after being totally reflected by the sidewall of the collimating lens 210 to be collimated light, the collimated light is reliably totally reflected by the catadioptric surface 221, and then is refracted by the sidewall of the catadioptric lens 220, so that the reliability of light emission is ensured.

Note that, in the embodiment where the material of the lens 200 is PC, the refractive index of PC is 1.592; in an embodiment where the material of the lens 200 is PMMA, the refractive index of PMMA is 1.492.

To sum up, the lamp 010 of the present invention includes a cylindrical lampshade 300 and a light emitting component 100 disposed in the cylindrical lampshade 300, wherein the light emitting component 100 includes a lamp panel 110, and a lamp bead 120 and a lens 200 disposed on the lamp panel 110, and the lamp bead 120 is embedded in an incident hole 211 of the lens 200; when the lamp bead 120 emits light, a first part of light 121 emitted by the lamp bead 120 enters from the side wall of the entrance hole 211, is reflected by the side wall of the collimating lens 210 and the side wall of the catadioptric lens 220 in sequence, and is refracted by the catadioptric surface 221 to be transmitted towards a direction far away from the lamp bead 120; after the second part of light 122 emitted by the lamp bead 120 enters from the side wall of the entrance hole 211, the second part of light is reflected by the side wall of the collimating lens 210 and the catadioptric surface 221 in sequence, and then is refracted by the side wall of the catadioptric lens 220 to be transmitted towards the direction close to the lamp bead 120; the third part of the light 123 emitted by the lamp bead 120 enters from the convex entrance surface 222 in the entrance hole 211, then propagates through the collimating lens 210 and the catadioptric lens 220 in sequence, and propagates towards the direction away from the lamp bead 120 after being refracted by the concave exit surface 223. The lens 200 can effectively solve the problem of uneven brightness of light emitted by the lamp 010, and user experience is improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A lens, comprising:

a collimating lens;

the catadioptric lens is connected with the collimating lens, and the catadioptric lens and the collimating lens are distributed on two sides of a set plane; wherein the content of the first and second substances,

an incident hole is formed in one end, far away from the catadioptric lens, of the collimating lens, the incident hole is used for arranging a lamp bead, and the outer diameter of the collimating lens is gradually increased from one end, far away from the set plane, to one end, close to the set plane, of the collimating lens; a catadioptric surface is arranged at one end, far away from the collimating lens, of the catadioptric lens, and the outer diameter of the catadioptric lens is gradually reduced from one end, close to the set plane, to the other end, far away from the set plane;

under the condition that the lamp beads are arranged in the entrance holes, a first part of light rays emitted by the lamp beads are incident to the side walls of the entrance holes, are reflected by the side walls of the entrance holes, then are reflected by the side walls of the collimating lenses and the side walls of the catadioptric lenses in sequence, and are transmitted towards the direction far away from the lamp beads through the refraction of the catadioptric surfaces; and a second part of light rays emitted by the lamp beads are incident to the side wall of the entry hole, are refracted by the side wall of the entry hole, then are reflected by the side wall of the collimating lens and the refraction and reflection surface in sequence, and are transmitted towards the direction close to the lamp beads through the refraction of the side wall of the refraction and reflection lens.

2. The lens of claim 1, wherein the collimating lens is further provided with a convex incident surface, the convex incident surface being located in the incident hole and opposite to the lamp bead disposed in the incident hole; and under the condition that the lamp beads are arranged in the incident holes, the third part of light rays emitted by the lamp beads are incident to the incident convex surface and are transmitted towards the direction far away from the lamp beads through the collimating lens and the catadioptric lens in sequence.

3. The lens of claim 2, wherein the catadioptric lens is further provided with a concave light-emitting surface, and the catadioptric surface is connected with the concave light-emitting surface; and under the condition that the lamp beads are arranged in the entrance holes, the third part of light rays emitted by the lamp beads are incident to the incident convex surface, sequentially pass through the collimating lens and the catadioptric lens and then are transmitted towards the direction far away from the lamp beads through the refraction of the light-emitting concave surface.

4. The lens of claim 3, wherein the catadioptric surface is tangential to the concave light-exit surface.

5. The lens according to claim 3 or 4, wherein the central axis of the lens is perpendicular to the setting plane, the included angle between the sidewall of the catadioptric lens and the setting plane is α, the included angle between the extension plane of the catadioptric surface and the setting plane is β, the angle of the concave light-emitting surface is A,

the α and β satisfy: alpha > Asin (1/n), beta > Asin (1/n), and 180-2 alpha-beta < Asin (1/n), where n is the refractive index of the material of the lens.

6. A lamp is characterized by comprising a cylindrical lampshade and a light-emitting component arranged in the cylindrical lampshade; the light-emitting component comprises a lamp bead, a lamp panel and the lens of claim 1, wherein the lamp bead and the lens are arranged on the lamp panel, and the lamp bead is embedded in the incident hole.

7. The lamp of claim 6, wherein the collimating lens is further provided with a convex incident surface, the convex incident surface being located in the incident hole and opposite to the lamp bead arranged at the incident hole; the catadioptric lens is also provided with a light-emitting concave surface, and the catadioptric surface is connected with and tangent to the light-emitting concave surface;

the third part light that the lamp pearl sent incides to the incident convex surface to pass through in proper order collimating lens with after the refraction and reflection lens, the process the refraction orientation of light-emitting concave surface is kept away from the direction propagation of lamp pearl.

8. The lamp as claimed in claim 7, wherein the cylindrical lampshade is a cylindrical lampshade, the central axis of the lens is perpendicular to the setting plane, the angle of the light emergent concave surface is A, and A satisfies: tan (A/2) is not less than (R/2)/H, wherein R is the diameter of the cylindrical lampshade, and H is the height of the cylindrical lampshade.

9. A lamp as recited in claim 8, wherein an angle between the sidewall of the catadioptric lens and the setting plane is α, an angle between the extension plane of the catadioptric surface and the setting plane is β,

the α and β satisfy: alpha > Asin (1/n), beta > Asin (1/n), and 180-2 alpha-beta < Asin (1/n), where n is the refractive index of the material of the lens.

10. A light fixture as recited in any one of claims 6-9, wherein the light emitting element is disposed at one end of the cylindrical lampshade along the axial extent of the cylindrical lampshade.

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