CN104848055B - Lighting device - Google Patents

Abstract

An illumination device, which has: a light source component with a plurality of first light sources and at least one diffraction optical component, wherein the at least one diffraction optical component forms a diffraction pattern, and the at least one diffraction optical component forms a diffraction pattern. The optical components each have a light incident side and a light exit side, the plurality of first light sources provide incident light to the light incident side of the at least one diffractive optical component; and a lamp housing receives the light from the at least one diffractive optical component. A diffraction optical component emits light from the light exit side.

Description

lighting device

technical field

The invention relates to an illuminating device, in particular to an illuminating device with a diffractive optical component.

Background technique

In the current lighting device, in order to make the light output uniform or generate a specific pattern, a fog lamp housing or an integrally formed patterned lamp housing is often used. Fogged lamp housings are generally used for general household lighting or office lighting, while one-piece patterned lamp housings are often found in car lights to provide specific stripes or geometric patterns.

However, the light extraction efficiency of the frosted lamp housing is poor, and the integrally formed patterned lamp housing cannot provide a uniform visual pattern - the observer can easily see multiple separated lamps through the integrally formed patterned lamp housing source.

In order to solve the aforementioned problems, a novel lighting device is required.

Contents of the invention

The object of the present invention is to provide a lighting device to improve the defects in the known technology.

In order to achieve the above purpose, the lighting device provided by the present invention has:

A light source component, having a plurality of first light sources and at least one diffractive optical component, wherein the at least one diffractive optical component forms a diffractive texture pattern, and each of the at least one diffractive optical component has a light-incident side and a light exit side, and the plurality of first light sources provide incident light to the light incident side of the at least one diffractive optical component; and

A lamp housing, which receives the light emitted by the light emitting side of the at least one diffractive optical component.

In one embodiment, the plurality of first light sources are composed of LED (light emitting diode; light emitting diode) or OLED (organic light emitting diode; organic light emitting diode) or PLED (polymer light emitting diode; polymer organic light emitting diode) .

In an embodiment, the plurality of first light sources have a single package or a plurality of packages.

In an embodiment, the plurality of first light sources have the same color light or different color lights.

In one embodiment, the plurality of first light sources have an optical conversion element and at least one second light source, and the at least one second light source is located on at least one side of the optical conversion element.

In an embodiment, the plurality of first light sources are located on the same plane or on different planes.

In an embodiment, the plurality of first light sources have multiple optical axis directions.

In one embodiment, the diffractive optical component is a transparent or translucent optical component.

In one embodiment, the diffractive optical component is made of glass, PC (polycarbonate; polycarbonate), PMMA (polymethyl methacrylate; polymethyl ester), COP (cyclo olefin polymers; cycloolefin polymer), ABS ( acrylonitrile butadiene styrene; acrylonitrile-butadiene-styrene), and a material selected from the group consisting of any combination of the foregoing.

The lighting device provided by the present invention also has:

A light source assembly having a plurality of first light sources and an array of diffractive optical elements, wherein the array of diffractive optical elements has a plurality of diffractive optical elements to form a combination of diffraction patterns, and the plurality of diffractive optical elements Each component has a light incident side and a light exit side, and the plurality of first light sources provide incident light to the light incident side of the plurality of diffractive optical components; and

A lamp housing, which receives the light emitted by the light emitting side of the plurality of diffractive optical components.

In the lighting device of the present invention, at least one diffractive optical component can provide a display pattern with uniform lines.

In the lighting device of the present invention, at least one diffractive optical component can provide a three-dimensional display pattern.

The illuminating device of the present invention can save the number of light sources by at least one diffractive optical component.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of an embodiment of the lighting device of the present invention.

FIG. 2 is a combined schematic diagram of the lighting device in FIG. 1 .

FIG. 3 is a schematic diagram of a fringe pattern generated by the illuminating device in FIG. 2 when emitting light.

FIG. 4 is a schematic diagram of a plurality of first light sources of the light source module in FIG. 1 not located on the same plane.

FIG. 5 is a schematic diagram of a plurality of first light sources of the light source module in FIG. 1 with two optical axis directions.

Fig. 6 is a three-dimensional schematic view of another embodiment of the lighting device of the present invention.

FIG. 7 is a schematic diagram of an illumination device of the present invention provided with a diffractive optical element array composed of a plurality of diffractive optical elements.

detailed description

In order to further understand the structure, features and purpose of the present invention, it will be described in detail in conjunction with the accompanying drawings and preferred specific embodiments.

Please refer to FIG. 1 , which is a three-dimensional schematic diagram of an embodiment of the lighting device of the present invention. As shown in FIG. 1 , the lighting device has a light source module 10 , a diffractive optical component 11 , and a lamp housing 12 .

The light source module 10 has a plurality of first light sources 10a, and the first light sources 10a may be composed of LEDs, OLEDs or PLEDs. The plurality of first light sources 10a may have a single package or multiple packages, and the plurality of first light sources 10a may have the same color light or different color lights.

The diffractive optical component 11 is a transparent or translucent optical component, and it can be made of a material selected from the group consisting of glass, PC, PMMA, COP, ABS, and any combination of the foregoing. The diffractive optical component 11 forms a light source component with a plurality of first light sources 10a, wherein the diffractive optical component 11 has a diffractive texture pattern, a light incident side 11a, and a light output side 11b, and the plurality of The first light source 10 a provides incident light to the light incident side 11 a of the diffractive optical component 11 . The diffraction pattern on the surface of the diffractive optical component 11 allows the viewer to observe a uniform striped pattern, geometric pattern, number, or letter symbol at a distance from the light-emitting side 11b.

The lamp housing 12 is used to receive the light emitted from the light emitting side 11 b of the diffractive optical component 11 . The lamp housing 12 can be a curved lamp housing or a flat lamp housing.

When emitting light, due to the diffraction effect of the diffractive optical component 11 , the viewer will see a slightly curved pattern at an angle away from the front. Accordingly, the lighting device of the present invention provides a three-dimensional pattern display effect.

Please refer to FIG. 2 , which is a combined schematic diagram of the lighting device in FIG. 1 . Please refer to FIG. 3 , which is a schematic diagram of a fringe pattern generated by the lighting device in FIG. 2 when emitting light. As shown in FIG. 3 , the stripe pattern generated by the lighting device is a uniform stripe pattern with a three-dimensional effect.

In addition, the plurality of first light sources 10 a of the light source module 10 may be located on the same plane or not located on the same plane. Please refer to FIG. 4 , which is a schematic diagram illustrating that the plurality of first light sources 10 a of the light source module 10 are not located on the same plane. When the plurality of first light sources 10a are not located on the same plane, the lighting device of the present invention can further enhance the three-dimensional effect of the displayed pattern.

In addition, the plurality of first light sources 10a of the light source module 10 may also have multiple optical axis directions. Please refer to FIG. 5 , which is a schematic diagram of the plurality of first light sources 10 a of the light source module 10 with two optical axis directions. Accordingly, the lighting device of the present invention can provide two different display patterns.

In addition, the plurality of first light sources 10 a of the light source module 10 can also be indirectly generated by an optical conversion element. Please refer to FIG. 6 , which is a three-dimensional schematic view of another embodiment of the lighting device of the present invention. As shown in FIG. 6 , the light source module 10 of the lighting device has an optical conversion element 13 , a plurality of second light sources 14 , and a reflection element 15 .

The optical conversion element 13 can be constituted by a light guide plate, which has two sides, a light emitting surface, and a back surface. The two sides are respectively provided with two second light sources 14 (at least one second light source 14 can also be provided on a single side), and the light exit surface has a plurality of light exit regions 13a to provide the plurality of first Light source 10a.

The plurality of second light sources 14 may be composed of LEDs, OLEDs or PLEDs.

The reflector 15 can be made of, for example but not limited to, metal to provide light reflection function.

In addition, the illuminating device of the present invention can also be provided with an array of diffractive optical elements to provide more complex display patterns. Please refer to FIG. 7 , which is a schematic diagram of a diffractive optical element array composed of a plurality of diffractive optical elements disposed in the illumination device of the present invention. As shown in Figure 7, the diffractive optical component labeled A has a first diffraction pattern to produce a vertical fringe display pattern, while the diffractive optical component labeled B has a second diffractive pattern to produce a horizontal stripe pattern. The stripes show the pattern. That is, by making the plurality of diffractive optical components form a combination of diffractive lines, the illuminating device of the present invention can allow the viewer to see a character or digital symbol when emitting light.

As can be seen from the above description, the present invention has the following advantages because of its novel design:

1) The illuminating device of the present invention can provide a display pattern with uniform lines by at least one diffractive optical component.

2) The illuminating device of the present invention can provide a display pattern with a three-dimensional effect by at least one diffractive optical component.

3) The illumination device of the present invention can save the number of light sources by at least one diffractive optical component.

The above description is a preferred embodiment, and all partial changes or modifications derived from the technical idea of the present invention and easily deduced by those skilled in the art all fall within the scope of the patent right of the present invention.

Claims (10)

1. A lighting device comprising: A light source component, having a plurality of first light sources and at least one diffractive optical component, wherein a surface of the at least one diffractive optical component forms a diffraction pattern, and each of the at least one diffractive optical component has a a light incident side and a light exit side, and the plurality of first light sources provide incident light to the light incident side of the at least one diffractive optical component; and A lamp housing, which receives the light emitted by the light output side of the at least one diffractive optical component; Wherein, the at least one diffractive optical component produces a diffraction effect on the plurality of first light sources through the diffractive texture pattern on the surface to provide a three-dimensional display pattern, so that a viewer A uniform striped pattern, geometric pattern, number, or letter symbol is observed at a distance from the light-emitting side, and due to the diffraction effect of the diffraction pattern, the viewer is at an angle away from the front A pattern that is slightly curved than the pattern seen in the front will be seen at the position, so that the lighting device provides a three-dimensional pattern display effect. 2. The lighting device according to claim 1, wherein the plurality of first light sources are light emitting diodes or organic light emitting diodes or polymer organic light emitting diodes. 3. The lighting device according to claim 1, wherein the plurality of first light sources have a single package or a plurality of packages. 4. The illuminating device according to claim 1, wherein the plurality of first light sources have the same color light or different color lights. 5. The lighting device according to claim 1, wherein the plurality of first light sources have an optical conversion element and at least one second light source, and the at least one second light source is located on at least one side of the optical conversion element . 6. The illuminating device according to claim 1, wherein the plurality of first light sources are located on the same plane or on different planes. 7. The illuminating device according to claim 1, wherein the plurality of first light sources have a plurality of optical axis directions. 8. The lighting device according to claim 1, wherein the diffractive optical component is a transparent or translucent optical component. 9. The lighting device according to claim 1, wherein the diffractive optical component is made of glass, polycarbonate, polymethyl ester, cycloolefin polymer, acrylonitrile-butadiene-styrene, and the aforementioned Any combination of a material selected by the group formed. 10. A lighting device comprising: A light source assembly having a plurality of first light sources and an array of diffractive optical elements, wherein the array of diffractive optical elements has a plurality of diffractive optical elements to form a combination of diffraction patterns on a surface, the plurality of Each of the diffractive optical components has a light incident side and a light exit side, and the plurality of first light sources provide incident light to the light incident sides of the plurality of diffractive optical components; and a lamp housing, which receives the light emitted by the light emitting side of the plurality of diffractive optical components; Wherein, the array of diffractive optical components produces a diffraction effect on the plurality of first light sources through the combination of the diffraction lines on the surface to provide a three-dimensional display pattern, so that a viewer at a distance A uniform striped pattern, geometric pattern, number, or letter symbol is observed at a distance from the light-emitting side, and due to the diffraction effect of the diffraction pattern, the viewer is at an angle away from the front It will be seen that the pattern is slightly curved than the pattern seen in the front, so that the lighting device provides a three-dimensional pattern display effect.