CN106704985B - Prismatic hemispherical shell LED lamp optical mask - Google Patents

Abstract

The invention belongs to the field of lamp masks, and specifically discloses an optical mask for an LED lamp with a facet hemispherical shell, which includes an outer spherical shell, an inner spherical shell, and the bottom of the mask; from the center to the periphery of the outer spherical shell, the first layer is a A number of evenly distributed isosceles triangles, the second layer to the last layer are several evenly distributed isosceles trapezoids; the base of each isosceles triangle is connected to the upper base of an isosceles trapezoid, except for the last layer The lower base of each outer isosceles trapezoid is respectively connected to the upper base of the next layer of 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 inner spherical shell and The bottom of the outer spherical shell is connected through the bottom of the mask; the part surrounded by the inner spherical shell, the outer spherical shell and the bottom of the mask is made of transparent optical material. The invention can meet the requirements of high-power LEDs and improve the utilization rate of luminous flux.

Description

Prismatic hemispherical shell LED lamp optical mask

technical field

The invention belongs to the field of lamp masks, and in particular relates to an optical mask for an LED lamp with a facet hemispherical shell.

Background technique

As the fourth generation of lighting, light emitting diodes (Light Emitting Diode, LED) gradually come into our life. However, LED is a point light source, which requires secondary optical design before it can be applied to various lighting fixtures. With the improvement of LED luminous efficiency and the increase of power, high-power LED is becoming the mainstream product in the market. The secondary optical design of high-power LEDs packaged as point light sources has become an important topic.

The main difference between high-power LEDs and low-power LEDs is that low-power LEDs often have an optical design, and the light emitted by them has a certain directivity and half-intensity angle; while high-power LEDs are generally directly packaged without corresponding Optical design, the emitted light is close to the Lambertian radiator of the natural diffuse surface. In response to this change in luminous characteristics, the traditional secondary optical design method for the luminous characteristics of low-power LEDs cannot meet the requirements of high-power LEDs.

Contents of the invention

The object of the present invention is to provide an optical mask for an LED lamp with a facet hemispherical shell, which can meet the requirements of high-power LEDs and improve the utilization rate of luminous flux.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

An optical mask for an LED lamp with a facet hemispherical shell, which includes an outer spherical shell, an inner spherical shell, and the bottom of the mask; from the center to the periphery of the outer spherical shell: the first layer is a number of isosceles triangles evenly distributed around the apex, and the second layer is The second floor to the last floor each have a number of evenly distributed isosceles trapezoids; the base of each isosceles triangle is connected to the upper base of an isosceles trapezoid, and the bottom of each isosceles trapezoid except the last floor The bottom edges are respectively connected to the upper bottom edge of the isosceles trapezoid of the next layer; 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 inside of the part enclosed by the inner spherical shell, the outer spherical shell and the bottom of the mask is transparent optical material.

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

The radius of the circumscribed circle on the outside of the bottom of the mask is 50mm, and the radius of the circumscribed circle on the inside of the bottom of the mask 5 is 40mm.

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

The beneficial effects of the present invention are:

The facet hemispherical shell LED lamp optical mask provided by the present invention realizes the magnitude distribution and angle of the luminous flux of a high-power LED point light source by designing the lamp cover as a spherical shell composed of facets, and by designing the shape and size of the facets. Distribution, realize the luminous flux to meet the luminous flux distribution requirements of the lamps, and at the same time improve the utilization rate of the luminous flux, achieve the purpose of saving energy and improve the quality of the lamps.

Description of drawings

Fig. 1 is the optical mask of the facet hemispherical shell LED lamp of the present invention;

Fig. 2 is a top view of the optical mask of the facet hemispherical shell LED lamp;

Fig. 3 is a light path diagram of the optical mask of the facet hemispherical shell LED lamp.

In the figure: 1. Outer spherical shell, 2. Inner spherical shell, 3. Lambertian LED, 4. Optical path, 5. Bottom of the mask.

Detailed ways

The technical solutions and beneficial effects of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 1 , the facet hemispherical LED lamp optical mask of the present invention includes an outer spherical shell 1 , an inner spherical shell 2 , and a bottom 5 of the mask.

As shown in Figure 2, the outer spherical shell 1 is composed of several facets. In this embodiment, from the center to the periphery of the outer spherical shell 1 are: the first layer is 18 isosceles triangles evenly distributed around the vertices, and the second layer to the fourth layer are each 18 evenly distributed isosceles trapezoids The bases of each isosceles triangle are respectively connected with the upper base of an isosceles trapezoid, and the lower bases of each isosceles trapezoid of the second and third layers are respectively connected with the upper base of the next layer of isosceles trapezoid. In another embodiment, the facets constituting the surface of the outer spherical shell 1 are a combination of pentagons and hexagons similar to the surface of a football.

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 approximate 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 the bottom 5 of the mask. The radius of the circumscribed circle on the outside of the mask bottom 5 is 50 mm, and the radius of the circumscribed circle on the inside of the mask bottom 5 is 40 mm. The part enclosed by the inner spherical shell 2, the outer spherical shell 1 and the bottom of the mask 5 is made of transparent optical material, such as optical glass, PC or PMMA.

As shown in FIG. 3 , the Lambertian light-emitting LED 3 is located at the center of the circumscribed circle of the bottom 5 of the optical mask of the facet hemispherical shell LED lamp. The light emitted by the Lambertian light-emitting LED 3 respectively passes through the inner spherical shell 2 and the outer spherical shell 1 of the optical mask of the facet hemispherical shell LED lamp, and is emitted to the outside of the mask.

Through the mutual cooperation of the facets of the inner spherical shell 2 and the outer spherical shell 1, the present invention realizes the value distribution and angle distribution of the luminous flux of the high-power LED point light source, and finally realizes that the luminous flux meets the requirements of the luminous flux distribution of the lamp, and at the same time improves the utilization rate of the luminous flux to achieve The purpose of saving energy and improving the quality of lamps and lanterns.

Claims (5)

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.

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