CN110966526A

CN110966526A - Positive beam angle lens, lamp with positive beam angle lens and lamp assembly

Info

Publication number: CN110966526A
Application number: CN201911378092.6A
Authority: CN
Inventors: 胡家培; 胡民海
Original assignee: Xian Zhihai Power Technology Co Ltd
Current assignee: Xian Zhihai Power Technology Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-04-07

Abstract

The invention relates to a lamp lens, in particular to a positive beam angle lens, a lamp with the positive beam angle lens and a lamp assembly, which solve the problems of overlarge volume, illumination range and uniformity of the existing reflection beam angle lens and comprise a hemispherical convex lens and a cylindrical lens body positioned right below the hemispherical convex lens, wherein the diameters of the hemispherical convex lens and the cylindrical lens body are equal; the hemispherical curved surface of the hemispherical convex lens is used as a light-emitting surface; the center of the bottom of the cylindrical mirror body is inwards sunken to form a light source accommodating cavity, the inner wall of the light source accommodating cavity is used as a light incident surface, and the center line of the light incident surface is coaxial with the center line of the light emergent surface. The light emitting surface and the light incident surface of the positive beam angle lens are both convex lenses, so that the refraction effect of light is utilized reasonably, the light emitting angle is smaller, the lens structure is smaller, the manufacturing is simple, the cost is low, the reflection angle is adjusted flexibly, the installation/replacement is convenient, the application range is wide, the LED lamps with various light emitting angles are met, and the positive beam angle lens is particularly suitable for LED lamps with high power and different light emitting angles.

Description

Positive beam angle lens, lamp with positive beam angle lens and lamp assembly

Technical Field

The invention relates to a lamp lens, in particular to a positive beam angle lens and a lamp with the same.

Background

As traditional incandescent bulbs slowly fade out of historical stage, fourth generation solid state light sources, typified by LEDs, are gradually building a core leadership in the field of lighting. The led (light Emitting diode) has high efficiency, pure light color, low energy consumption, long service life, no pollution, and the like, and thus becomes a competitive new light source in the 21 st century. With the continuous improvement of the luminous flux and the luminous efficiency of the LED, the LED is more and more widely applied in the field of illumination. However, the surface light emission of the LED chip is Lambertian and cannot be directly applied to the lighting system. Therefore, the design of secondary light distribution using LEDs as light sources is very important.

The light source of the existing high-power lighting lamp is generally formed by arranging a plurality of LEDs, so that the corresponding light distribution optical device is also designed into a plurality of module forms. However, the unification grading module on the existing market generally uses reflection of light cup as the main, and the lens that uses usually promptly is reflection of light angle lens, and such unification reflection of light cup module generally has the too big problem of volume, and reflection of light angle lens is that the angle is less, and structure size is big more, and it is just big more to occupy the space, because the volume of single reflection of light cup is great, and the unification is integrated afterwards more, holistic volume is bigger to make the unable reduction of lamps and lanterns overall design size, market application range is less.

The light spot projected by the existing lens is circular, and the light intensity difference between the center and the periphery is large; for some occasions requiring large-range illumination in a certain direction and small-range illumination in the other direction, such as road illumination, the illumination range in the road extension direction is required to be wide, the illumination effect is good, and the angle requirement is large; in the direction perpendicular to the road, there is no need for wide-range lighting, which would otherwise waste electrical energy and cause light pollution to the surrounding environment. However, for the existing LED with a circular lens, the light intensity requirement can only be met by arranging more lamps in the extending direction of the road and overlapping the light spots of adjacent lamps, even if the lighting effect of the 'rib road' is difficult to avoid, the illuminance right below the lamps is high, the illuminance of other areas is low, the average illuminance of the road surface is low, the uniformity is poor, and the lighting with uneven brightness directly affects the driving safety.

Disclosure of Invention

In order to solve the problems of overlarge volume, and illumination range and uniformity of the conventional reflection beam angle lens, the invention provides a positive beam angle lens and a lamp with the same.

The technical scheme of the invention is to provide a positive beam angle lens, which is characterized in that: the lens comprises a hemispherical convex lens and a cylindrical lens body which is positioned under the hemispherical convex lens and is integrally arranged, wherein the diameters of the hemispherical convex lens and the cylindrical lens body are equal; the hemispherical curved surface of the hemispherical convex lens is used as a light-emitting surface; the center of the bottom of the cylindrical mirror body is inwards sunken to form a light source accommodating cavity, the inner wall of the light source accommodating cavity is used as a light incident surface, and the light incident surface is coaxial with the center line of the light emergent surface.

Further, the shape of the cavity inside the light source accommodating chamber is triangular prism-shaped; one rectangular surface of the triangular prism is positioned at the bottom of the cylindrical mirror body, and the inner corners of the inner edges of the cavity are rounded; the plane on the bottom of the cylindrical mirror body is defined as an XY plane, so that the light distribution surface along the XY plane is in a batwing shape, and the light distribution surface along the YZ plane is in a water-drop shape.

Further, the distance from the center of the top of the light source accommodating chamber to the center of the light emitting surface is larger than the radius of the hemispherical convex lens; the Z-direction height of the light source accommodating chamber is equal to the radius of the hemispherical convex lens, and the X-direction size of the opening end of the light source accommodating chamber is larger than the radius of the hemispherical convex lens.

Further, the positive beam angle lens has a Z-direction height of 18mm, the radius of the hemispherical convex lens is 8mm, the Z-direction height of the cylindrical lens body is 11.3mm, the Y-direction dimension of the opening end of the light source accommodating chamber is 8.3mm, and the X-direction dimension is 9 mm.

Further, for convenience of installation, the positive beam angle lens further comprises a ring-shaped installation piece arranged at the bottom of the cylindrical mirror body, and a protrusion is arranged on the end face of the ring-shaped installation piece.

The invention also provides a lamp with the positive beam angle lens, which is characterized in that: the LED lamp comprises a fixed seat, a plurality of LED lamp beads and a plurality of positive beam angle lenses; the LED lamp beads are uniformly distributed on the fixing seat, and the positive beam angle lens is buckled on each LED lamp bead and fixed on the fixing seat.

Further, the shape of the cavity inside the light source accommodating chamber is cylindrical, and the inner edge of the cavity is rounded, so that the bottom of the cylindrical mirror body is defined as an XY plane on the plane, the light distribution surface along the XY plane is in a water-drop shape, and the light distribution surface along the YZ plane is in a water-drop shape.

Further, the distance from the center of the top of the light source accommodating chamber to the center of the light emitting surface is equal to the radius of the hemispherical convex lens; the Z-direction height of the light source accommodating chamber is smaller than the radius of the hemispherical convex lens, and the X-direction size and the Y-direction size of the opening end of the light source accommodating chamber are both larger than the radius of the hemispherical convex lens.

Further, the height in the Z direction is 15mm, the radius of the hemispherical convex lens is 8mm, the height in the Z direction of the cylindrical lens body is 8.5mm, the height in the Z direction of the light source accommodating chamber is 7mm, and the radius is 2 mm.

Further, for the convenience of installation, the positive beam angle lens further comprises a ring-shaped installation member arranged at the bottom of the cylindrical mirror body, and a protrusion is arranged on the end face of the ring-shaped installation member.

The invention also provides a lamp assembly with the positive beam angle lens, which is characterized in that: including the two aforementioned lamps with positive beam angle lenses.

The invention has the beneficial effects that:

1. the light emitting surface and the light incident surface of the positive beam angle lens are both convex lenses, so that the refraction effect of light is utilized reasonably, and the smaller the light emitting angle is, the smaller the lens structure is;

2. the positive beam angle lens has the advantages of small structure, simple manufacture, low cost, flexible adjustment of the reflection angle, convenient installation/replacement and wide application range, meets the requirements of LED lamps with various light-emitting angles, and is particularly suitable for LED lamps with high power and different light-emitting angles.

3. The positive beam angle lens has uniform light intensity distribution, different distribution ranges in the horizontal direction and the vertical direction, and high light efficiency utilization rate in practical application.

Drawings

FIG. 1 is a schematic diagram of a positive beam angle lens according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a positive beam angle lens along the yz plane according to one embodiment of the present invention;

FIG. 3 is a front view of a positive beam angle lens according to one embodiment of the present invention;

FIG. 4 is a bottom view of a positive beam angle lens in accordance with one embodiment of the present invention;

FIG. 5 is a graph showing a light intensity distribution of a positive beam angle lens according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a second positive beam angle lens according to an embodiment of the present invention;

FIG. 7 is a front view of a second positive beam angle lens according to an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a positive beam angle lens along the yz plane according to a second embodiment of the present invention;

FIG. 9 is a light intensity distribution curve of a positive beam angle lens according to a second embodiment of the present invention;

the reference numbers in the figures are: 1-hemispherical convex lens, 2-cylindrical lens body, 3-light source accommodating chamber, 4-annular mounting piece and 5-bulge.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

Example one

As shown in fig. 1, the positive beam angle lens of the present embodiment is made of PC, and includes a hemispherical convex lens 1 and a cylindrical lens body 2 integrally disposed under the hemispherical convex lens, wherein the diameters of the hemispherical convex lens and the cylindrical lens body are equal; wherein, the semispherical curved surface of the semispherical convex lens is used as the light emergent surface of the lens; the center of the bottom of the cylindrical mirror body is inwards sunken to form a light source accommodating cavity 3, the inner wall of the light source accommodating cavity 3 serves as a light incident surface, and the light incident surface is coaxial with the center line of the light emergent surface.

Defining the plane of the bottom of the cylindrical mirror body 2 as an XY plane, and combining fig. 2, fig. 3 and fig. 4, the shape of the cavity inside the light source accommodating cavity 3 in this embodiment is a triangular prism shape; and one of the rectangular surfaces of the triangular prism is positioned at the bottom of the cylindrical mirror body 2, and the inner corners of the inner edges of the cavity are rounded.

In order to fix the positive beam angle lens outside the LDE lamp bead, this embodiment further includes ring mounting member 4 arranged at the bottom of the cylindrical mirror body, and protrusion 5 is arranged on the end face of ring mounting member 4, and the installation and fixation are realized through protrusion 5. After LDE lamp beads are uniformly distributed on the fixing plate, the positive beam angle lens of the embodiment is buckled on the LDE lamp beads to form the LDE lamp. As shown in fig. 5, the light distribution surface of the positive beam angle lens in the present embodiment in the XY plane direction, i.e., the horizontal direction, is in the shape of a batwing, and the light distribution surface in the YZ direction, i.e., the vertical direction, is in the shape of a drop, so that, if the positive beam angle lens is applied to a street lamp, the rib-clearing phenomenon can be solved, the driving safety can be ensured, and the positive beam angle lens can be applied to a ship, and when a foreign object is determined in front of the ship, the environment around the foreign object.

As can be seen from fig. 5, the light intensity distribution curve of the positive beam angle lens of the present embodiment has an irradiation range of 10 ° in the YZ direction and an irradiation range of 50 ° in the XY plane direction.

The specific structural parameters of the positive beam angle lens of the present embodiment are as follows:

the positive beam angle lens has a Z-direction height of 18 mm;

the radius of hemisphere convex lens is 8mm, and the Z of cylindrical mirror body is to highly being 11.3mm, and light source holds chamber open end Y and is 8.3mm to the size, and X is to the size 9mm, and triangular prism apex angle is 40, and annular mounting spare 4's Z is to thickness 1mm, and protruding Z is to thickness 0.6 mm.

Example two

As shown in fig. 6, the positive beam angle lens of the present embodiment is made of PC, and also includes a hemispherical convex lens 1 and a cylindrical lens body 2 integrally disposed under the hemispherical convex lens, wherein the diameters of the hemispherical convex lens and the cylindrical lens body are equal; wherein, the semispherical curved surface of the semispherical convex lens is used as the light emergent surface of the lens; the bottom center of the cylindrical mirror body is inwards sunken to form a light source accommodating chamber 3, the inner wall of the light source accommodating chamber 3 serves as a light incident surface, and the light incident surface is coaxial with the light emergent surface.

Referring to fig. 7 and 8, unlike the first embodiment, the shape of the cavity inside the light source accommodating chamber is a cylinder, and the inner edges of the cavity are rounded.

In order to fix the positive beam angle lens outside the LDE lamp bead, this embodiment further includes ring mounting member 4 arranged at the bottom of the cylindrical mirror body, and protrusion 5 is arranged on the end face of ring mounting member 4, and the installation and fixation are realized through protrusion 5. After LDE lamp beads are uniformly distributed on the fixing plate, the positive beam angle lens of the embodiment is buckled on the LDE lamp beads to form the LDE lamp.

As shown in fig. 9, the light distribution surface of the positive beam angle lens of the present embodiment in the XY plane direction, i.e., the horizontal direction, is in the shape of a water droplet, and the light distribution surface in the YZ direction, i.e., the vertical direction, is in the shape of a water droplet, and the positive beam angle lens of the present embodiment can be used in combination with the positive beam angle lens of the first embodiment in a ship lamp.

As can be seen from fig. 9, the light intensity distribution curve of the positive beam angle lens of the present embodiment has an irradiation range of 10 ° in the YZ direction and an irradiation range of 10 ° in the XY plane direction.

the positive beam angle lens has a Z-direction height of 15mm, the radius of the hemispherical convex lens is 8mm, the Z-direction height of the cylindrical lens body is 8.5mm, the Z-direction height of the light source accommodating chamber is 7mm, and the radius is 2 mm.

Claims

1. A positive beam angle lens, characterized by: the lens comprises a hemispherical convex lens (1) and a cylindrical lens body (2) which is positioned under the hemispherical convex lens (1) and is integrally arranged, wherein the diameters of the hemispherical convex lens (1) and the cylindrical lens body (2) are equal; the hemispherical curved surface of the hemispherical convex lens (1) is used as a light-emitting surface; the bottom center of the cylindrical mirror body (2) is inwards sunken to form a light source accommodating cavity (3), the inner wall of the light source accommodating cavity (3) serves as a light incident surface, and the light incident surface is coaxial with the center line of the light emergent surface.

2. The positive beam angle lens of claim 1, wherein: the shape of the inner cavity of the light source accommodating chamber (3) is triangular prism; one rectangular surface of the triangular prism is positioned at the bottom of the cylindrical mirror body (2), and the inner corners of the inner edges of the cavity are rounded; the plane of the bottom of the cylindrical mirror body is defined as an XY plane, so that the light distribution surface along the XY plane is in a batwing shape, and the light distribution surface along a YZ plane is in a water-drop shape.

3. The positive beam angle lens of claim 2, wherein: the distance from the center of the top of the light source accommodating chamber (3) to the center of the light emitting surface is larger than the radius of the hemispherical convex lens (1); the Z-direction height of the light source accommodating chamber (3) is equal to the radius of the hemispherical convex lens (1), and the X-direction size of the opening end of the light source accommodating chamber (3) is larger than the radius of the hemispherical convex lens (1).

4. The positive beam angle lens of claim 3, wherein: the height of the Z direction is 18mm, the radius of the hemispherical convex lens (1) is 8mm, the height of the cylindrical lens body (2) of the Z direction is 11.3mm, the Y direction size of the opening end of the light source accommodating chamber (3) is 8.3mm, and the X direction size is 9 mm;

still including setting up ring mount spare (4) in cylindrical mirror body (2) bottom, set up arch (5) on the terminal surface of ring mount spare (4).

5. A luminaire having a positive beam angle lens, characterized by: the LED lamp comprises a fixed seat, a plurality of LED lamp beads and a plurality of positive beam angle lenses of any one of claims 1 to 4; the LED lamp beads are uniformly distributed on the fixing seat, and the positive beam angle lens is buckled on each LED lamp bead and fixed on the fixing seat.

6. The positive beam angle lens of claim 1, wherein: the shape of the inner cavity of the light source accommodating cavity (3) is cylindrical, the inner edge of the inner cavity is rounded, and the plane where the bottom of the cylindrical lens body is located is defined as an XY plane, so that the light distribution surface along the XY plane is in a water-drop shape, and the light distribution surface along the YZ plane is in a water-drop shape.

7. The positive beam angle lens of claim 6, wherein: the distance from the center of the top of the light source accommodating chamber (3) to the center of the light emitting surface is equal to the radius of the hemispherical convex lens (1); the Z-direction height of the light source accommodating chamber (3) is smaller than the radius of the hemispherical convex lens, and the X-direction size and the Y-direction size of the opening end of the light source accommodating chamber (3) are both larger than the radius of the hemispherical convex lens (1).

8. The positive beam angle lens of claim 7, wherein: the height in the Z direction is 15mm, the radius of the hemispherical convex lens (1) is 8mm, the height in the Z direction of the cylindrical lens body (2) is 8.5mm, the height in the Z direction of the light source accommodating chamber (3) is 7mm, and the radius is 2 mm; still including setting up the annular installed part in cylindrical mirror body bottom, set up the arch on the terminal surface of annular installed part.

9. A luminaire having a positive beam angle lens, characterized by: the LED lamp comprises a fixed seat, a plurality of LED lamp beads and a plurality of positive beam angle lenses of any one of claims 6 to 8; the LED lamp beads are uniformly distributed on the fixing seat, and the positive beam angle lens is buckled on each LED lamp bead and fixed on the fixing seat.

10. A lamp assembly having a positive beam angle lens, characterized by: a luminaire comprising the positive beam angle lens of claims 5 and 9.