CN106704985B

CN106704985B - Prismatic surface hemispherical shell LED lamp optical mask

Info

Publication number: CN106704985B
Application number: CN201510422467.XA
Authority: CN
Inventors: 李建; 王坤; 彭杰; 廖创
Original assignee: Southwestern Institute of Physics; Engineering and Technical College of Chengdu University of Technology
Current assignee: Southwestern Institute of Physics; Engineering and Technical College of Chengdu University of Technology
Priority date: 2015-07-17
Filing date: 2015-07-17
Publication date: 2023-07-14
Anticipated expiration: 2035-07-17
Also published as: CN106704985A

Abstract

The invention belongs to the field of lamp masks, and particularly discloses an optical mask of a prismatic-surface hemispherical-shell LED lamp, which comprises an outer spherical shell, an inner spherical shell and a mask bottom; from the center to the periphery of the outer spherical shell are respectively: the first layer is a plurality of isosceles triangles uniformly distributed around the vertex, and the second layer to the last layer are a plurality of isosceles trapezoids uniformly distributed; the bottom edge of each isosceles triangle is respectively connected with the upper bottom edge of one isosceles trapezoid, and the lower bottom edge of each isosceles trapezoid except the last layer is respectively connected with the upper bottom edge of the next isosceles trapezoid; the structure of the inner spherical shell is the same as that of the outer spherical shell, and the size of the inner spherical shell is smaller than that of the outer spherical shell; the bottoms of the inner spherical shell and the outer spherical shell are connected through the bottom of the mask; the inner spherical shell, the outer spherical shell and the part surrounded by the bottom of the mask are made of transparent optical materials. The invention can meet the requirements of high-power LEDs and improve the utilization rate of luminous flux.

Description

Prismatic surface hemispherical shell LED lamp optical mask

Technical Field

The invention belongs to the field of lamp masks, and particularly relates to an optical mask of a prismatic-surface hemispherical-shell LED lamp.

Background

As a fourth generation of illumination, light emitting diodes (Light Emitting Diode, LEDs) are gradually moving into our lives. However, LEDs are point light sources and require secondary optical design to be applied to various lighting fixtures. With the increase of the luminous efficiency and the increase of the power of the LED, a high-power LED is becoming a mainstream product in the market. The secondary optical design of high power LEDs packaged with point light sources is an important issue.

The main difference between high-power LEDs and low-power LEDs is that: the low-power LED is often subjected to primary optical design, and the emitted light has certain directivity and a half light intensity angle; while high power LEDs are typically packaged directly without a corresponding optical design, the light emitted by them approximates a natural diffusing surface lambertian emitter. Aiming at the change of the luminous characteristics, the traditional secondary optical design method aiming at the luminous characteristics of the low-power LED can not meet the requirements of the high-power LED.

Disclosure of Invention

The invention aims to provide an optical mask of a prismatic-surface hemispherical-shell LED lamp, which can meet the requirements of high-power LEDs and improve the utilization rate of luminous flux.

In order to solve the technical problems, the invention adopts the following technical scheme:

an optical mask of a prismatic surface hemispherical shell LED lamp comprises an outer spherical shell, an inner spherical shell and a mask bottom; from the center to the periphery of the outer spherical shell are respectively: the first layer is a plurality of isosceles triangles uniformly distributed around the vertex, and the second layer to the last layer are a plurality of isosceles trapezoids uniformly distributed; the bottom edge of each isosceles triangle is respectively connected with the upper bottom edge of one isosceles trapezoid, and the lower bottom edge of each isosceles trapezoid except the last layer is respectively connected with the upper bottom edge of the next isosceles trapezoid; the structure of the inner spherical shell is the same as that of the outer spherical shell, and the size of the inner spherical shell is smaller than that of the outer spherical shell; the bottoms of the inner spherical shell and the outer spherical shell are connected through the bottom of the mask; the inner spherical shell, the outer spherical shell and the part surrounded by the bottom of the mask are made of transparent optical materials.

The bottom surface of the outer spherical shell is an approximate circular ring or an approximate elliptical ring.

The radius of the circumcircle on the outer side of the mask bottom is 50mm, and the radius of the circumcircle on the inner side of the mask bottom 5 is 40mm.

The transparent optical material is optical glass, PC or PMMA.

The beneficial effects of the invention are as follows:

according to the prismatic-surface hemispherical-shell LED lamp optical mask, the lamp outer cover is designed into the spherical shell formed by the prismatic surfaces, and the quantity distribution and the angle distribution of the luminous flux of the high-power LED point light source are realized by designing the shape and the size of the prismatic surfaces, so that the luminous flux meets the luminous flux distribution requirement of the lamp, the luminous flux utilization rate is improved, the purpose of saving energy is achieved, and the quality of the lamp is improved.

Drawings

FIG. 1 is an optical face mask of a faceted hemispherical shell LED lamp of the present invention;

FIG. 2 is a top view of an optical face mask of a faceted hemispherical shell LED lamp;

fig. 3 is an optical path diagram of an optical mask of a prismatic hemispherical shell LED lamp.

In the figure: 1. the LED face mask comprises an outer spherical shell, an inner spherical shell, a lambertian luminous LED, a light path 4 and a mask bottom 5.

Detailed Description

The technical scheme and beneficial effects of the invention are further described below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the prismatic surface hemispherical shell LED lamp optical mask of the present invention comprises an outer spherical shell 1, an inner spherical shell 2, and a mask bottom 5.

As shown in fig. 2, the outer shell 1 is formed of a plurality of facets. In the present embodiment, from the center to the periphery of the outer spherical shell 1, respectively: the first layer is 18 isosceles triangles uniformly distributed around the vertex, and the second layer to the fourth layer are 18 isosceles trapezoids uniformly distributed respectively; the bottom edge of each isosceles triangle is respectively connected with the upper bottom edge of one isosceles trapezoid, and the lower bottom edge of each isosceles trapezoid of the second layer and the third layer is respectively connected with the upper bottom edge of the isosceles trapezoid of the next layer. In another embodiment, the facets constituting the surface of the outer spherical shell 1 are a combination of pentagons and hexagons resembling the surface of a soccer ball.

The bottom surface of the outer spherical shell 1 is an approximate circular ring. In another embodiment, the bottom surface of the outer spherical shell 1 is an approximately elliptical ring.

The structure of the inner spherical shell 2 is the same as that of the outer spherical shell 1, and the size of the inner spherical shell 2 is smaller than that of the outer spherical shell 1. The bottoms of the inner spherical shell 2 and the outer spherical shell 1 are connected through a mask bottom 5. The radius of the circumcircle on the outer side of the mask bottom 5 is 50mm, and the radius of the circumcircle on the inner side of the mask bottom 5 is 40mm. The inner spherical shell 2, the outer spherical shell 1 and the mask bottom 5 are surrounded by transparent optical materials, and optical glass, PC or PMMA can be used.

As shown in fig. 3, the lambertian light emitting LED3 is located at the center of the circumcircle of the mask bottom 5 of the prismatic hemispherical shell LED light fixture optical mask. Light emitted by the lambertian luminous LED3 respectively passes through the inner spherical shell 2 and the outer spherical shell 1 of the prismatic surface hemispherical shell LED lamp optical mask and is emitted to the outside of the mask.

Through the mutual matching of the edges of the inner spherical shell 2 and the outer spherical shell 1, the invention realizes the magnitude distribution and the angle distribution of the luminous flux of the high-power LED point light source, and finally realizes that the luminous flux meets the luminous flux distribution requirement of the lamp, and simultaneously improves the luminous flux utilization rate, achieves the purpose of saving energy and improves the quality of the lamp.

Claims

1. The utility model provides a prism hemisphere shell LED lamps and lanterns optical mask which characterized in that:

the device comprises an outer spherical shell (1), an inner spherical shell (2) and a mask bottom (5); the center to the periphery of the outer spherical shell (1) are respectively: the first layer is a plurality of isosceles triangles uniformly distributed around the vertex, and the second layer to the last layer are a plurality of isosceles trapezoids uniformly distributed; the bottom edge of each isosceles triangle is respectively connected with the upper bottom edge of one isosceles trapezoid, and the lower bottom edge of each isosceles trapezoid except the last layer is respectively connected with the upper bottom edge of the next isosceles trapezoid; the structure of the inner spherical shell (2) is the same as that of the outer spherical shell (1), and the size of the inner spherical shell (2) is smaller than that of the outer spherical shell (1); the bottoms of the inner spherical shell (2) and the outer spherical shell (1) are connected through the bottom part (5) of the mask; the inner spherical shell (2), the outer spherical shell (1) and the mask bottom (5) are surrounded by transparent optical materials.

2. The prismatic, hemispherical, LED luminaire optical facepiece of claim 1, wherein:

the bottom surface of the outer spherical shell (1) is an approximate circular ring.

3. The prismatic, hemispherical, LED luminaire optical facepiece of claim 1, wherein:

the bottom surface of the outer spherical shell (1) is an approximate elliptical ring.

4. The prismatic, hemispherical, LED luminaire optical mask of claim 2, wherein:

the radius of the circumcircle on the outer side of the mask bottom (5) is 50mm, and the radius of the circumcircle on the inner side of the mask bottom (5) is 40mm.

5. A faceted hemi-spherical shell LED luminaire optical facepiece as defined in claim 3 or 4, wherein:

the transparent optical material is optical glass, PC or PMMA.