TW201608168A - Illumination device for decreasing glare value and optical element thereof - Google Patents

Abstract

The present invention provides an illumination device for decreasing glare value and an optical element thereof. The illumination device includes a light-emitting element and an optical element, and the optical element includes a light-transmitting body and a micro grille structure. The light-emitting element can generate a direct-type light source. The light-transmitting body has a light input surface and an light output surface opposite to the light input surface, and the light input surface of the light-transmitting body faces the direct-type light source. The micro grille structure is disposed on the light output surface of the light-transmitting body. The micro grille structure is composed of a plurality of strips projected outward from the light output surface, and each strip has at least one inclined surface.

Description

Illumination device for reducing glare value and optical component thereof

The present invention relates to an illumination device and an optical component thereof, and more particularly to an illumination device for reducing glare value and an optical component thereof.

Traditional luminaires are glaring and produce intense glare due to the small light-emitting area of their light source (such as a light bulb or tube). In order to be able to improve this major drawback, as shown in FIG. 1, conventional luminaires block the human eye and the point source with a grid structure P, thereby reducing the glare value. However, conventionally, the use of the grid structure P still produces residual low glare, and the use of the grid structure P also increases the cost of the lamp and environmental considerations.

Embodiments of the present invention provide a lighting device and an optical component thereof, which can be effectively used not only to reduce glare problems (especially low glare) generated during illumination, but also to reduce overall cost and achieve environmental protection. Advantage.

An optical component for reducing glare value provided by one embodiment of the present invention includes: a light transmissive body and a micron grid structure. The light-transmitting body has a light-incident surface and a light-emitting surface disposed opposite to the light-incident surface, wherein the light-incident surface of the light-transmitting body faces the direct-light source. The micro-grid structure is disposed on the light-emitting surface of the light-transmitting body, wherein the micro-grid structure is composed of a plurality of stripes protruding from the light-emitting surface, each of the stripes having at least one Inclined surface.

A lighting device for reducing glare value provided by another embodiment of the present invention The device includes a light emitting component and an optical component, and the optical component includes a light transmitting body and a micrometer grating structure. The illuminating element is used to provide a direct light source. The light-transmitting body has a light-incident surface and a light-emitting surface disposed opposite to the light-incident surface, wherein the light-incident surface of the light-transmitting body faces the direct-type light source. The micro-grid structure is disposed on the light-emitting surface of the light-transmitting body, wherein the micro-grid structure is composed of a plurality of stripes protruding from the light-emitting surface, each of the stripes having at least one Inclined surface.

According to still another embodiment of the present invention, an optical component for reducing glare value includes: a light guiding body and an optical component, and the optical component comprises a light transmitting body and a micrometer grating structure. The side end of the light guiding body forms a light incident surface, wherein the light incident surface of the light guiding body faces the one side light source. The light-transmitting body is connected to the light-guiding body, wherein the light-transmitting body has a light-emitting surface disposed perpendicular to the light-incident surface. The micro-grid structure is disposed on the light-emitting surface of the light-transmitting body, wherein the micro-grid structure is composed of a plurality of stripes protruding from the light-emitting surface, each of the stripes having at least one Inclined surface.

According to still another embodiment of the present invention, a lighting device for reducing glare value includes: a light emitting element, a light guiding body, and an optical component, and the optical component includes a light transmitting body and a micron grid. Gate structure. The illuminating element is for providing a side-in type light source. The side end of the light guiding body forms a light incident surface, wherein the light incident surface of the light guiding body faces the side input light source. The light-transmitting body is connected to the light-guiding body, wherein the light-transmitting body has a light-emitting surface disposed perpendicular to the light-incident surface. The micro-grid structure is disposed on the light-emitting surface of the light-transmitting body, wherein the micro-grid structure is composed of a plurality of stripes protruding from the light-emitting surface, each of the stripes having at least one Inclined surface.

Another embodiment of the present invention provides an optical component for reducing glare value, comprising: a light transmissive body and a micron grid structure. The light-transmitting body has a light-incident surface and a light-emitting surface disposed perpendicular to the light-incident surface, wherein the light-incident surface is formed at a side end of the light-transmitting body and faces the one-side light source. The micron A grid structure is disposed on the light-emitting surface of the light-transmitting body, wherein the micro-grid structure is composed of a plurality of stripes protruding from the light-emitting surface, each of the stripes having at least one inclined surface.

According to still another embodiment of the present invention, a lighting device for reducing glare value includes: a light emitting element and an optical element, and the optical element includes a light transmitting body and a micrometer grating structure. The light-transmitting body has a light-incident surface and a light-emitting surface disposed perpendicular to the light-incident surface, wherein the light-incident surface is formed at a side end of the light-transmitting body and faces the side-entry light source. The micro-grid structure is disposed on the light-emitting surface of the light-transmitting body, wherein the micro-grid structure is composed of a plurality of stripes protruding from the light-emitting surface, each of the stripes having at least one Inclined surface.

The illuminating device and the optical component thereof can be disposed on the light emitting surface of the light transmitting body through the microgrid structure, wherein the micrometer is provided by the embodiment of the present invention. The grid structure is composed of a plurality of stripes protruding from the light-emitting surface, each of the stripes having a design of at least one inclined surface, so that the present invention can be effectively used not only to reduce glare problems generated during illumination ( Especially low glare, and it can also help to reduce the overall cost and achieve the advantages of environmental protection.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

D‧‧‧Lighting device

1‧‧‧Lighting elements

10‧‧‧Direct light source

11‧‧‧Side-in light source

L1‧‧‧ part of the beam

L2‧‧‧Other part of the beam

B1‧‧‧First forward illumination beam

B2‧‧‧second positive illumination beam

2‧‧‧Lighting body

20‧‧‧reflective layer

200‧‧‧Into the glossy

3‧‧‧Optical components

30‧‧‧Lighting body

300, 300’‧‧‧ into the glossy

301‧‧‧Glossy

31‧‧‧microgrid structure

310‧‧‧ stripes

3100‧‧‧ sloped surface

3101‧‧‧Vertical

32‧‧‧reflective layer

w‧‧‧Width

H‧‧‧height

D‧‧‧ spacing

P‧‧‧grid structure

FIG. 1 is a schematic perspective view of a conventional luminaire using a grid structure.

Fig. 2 is a side elevational view showing the optical element of the first embodiment of the present invention.

Figure 3 is a side elevational view of a lighting device in accordance with a first embodiment of the present invention.

Figure 4 is a side elevational view of a lighting device in accordance with a second embodiment of the present invention.

Figure 5 is a side elevational view of a lighting device in accordance with a third embodiment of the present invention.

Figure 6 is an example of the use of radial stripes in the microgrid structure of the optical element of the present invention. A three-dimensional diagram.

Figure 7 is an enlarged cross-sectional view showing a portion of Figure 6;

FIG. 8 is a perspective view showing the application of the optical component having the microgrid structure of the present invention to a conventional lamp.

The following is a description of the embodiments of the present invention relating to "illuminating devices and their optical components" by way of specific examples, and those skilled in the art can understand the advantages and effects of the present invention from the disclosure of the present specification. The present invention can be implemented or applied in various other specific embodiments, and various modifications and changes can be made without departing from the spirit and scope of the invention. In addition, the drawings of the present invention are merely illustrative and are not described in terms of actual dimensions. The following embodiments will further explain the related technical content of the present invention, but the disclosure is not intended to limit the technical scope of the present invention.

[First Embodiment]

2 and FIG. 3, FIG. 2 is a side view of the optical component, and FIG. 3 is a side view of the lighting device. As can be seen from the above figures, the first embodiment of the present invention provides an optical component 3 for reducing glare value, comprising: a light transmitting body 30 and a microgrid structure 31.

First, as shown in FIG. 2, the light-transmitting body 30 has a light-incident surface 300 and a light-emitting surface 301 disposed opposite to the light-incident surface 300, and the light-incident surface 300 of the light-transmitting body 30 directly faces the light source. 10 (not shown in Figure 2, see Figure 3). In addition, the micro-grid structure 31 is disposed on the light-emitting surface 301 of the light-transmitting body 30, wherein the micro-grid structure 31 can be composed of a plurality of stripes 310 protruding from the light-emitting surface 301, and each of the stripes 310 has at least one inclined surface. 3100.

For example, each strip 310 can define a width w having an asymptotic change and a height h formed with respect to the light exit surface 301, and a spacing d can be defined between each two adjacent strips 310. The width w of each stripe will It gradually becomes smaller toward the vertical direction away from the light exit surface 301. Furthermore, the width w and height h of each strip 310 and the spacing d between each two adjacent strips 310 can be adjusted according to different design requirements for controlling the optical element 3. The ability to reduce glare values. Of course, the shape of each strip 310 can also be adjusted to different needs, which also helps to control the ability of the optical element 3 to reduce glare values. In other words, the width w, the height h and the shape of each strip 310, and the spacing d between each two adjacent strips 310 can be used as design parameters for controlling the glare value of the optical element 3 of the present invention.

As shown in FIG. 2 and FIG. 3, the first embodiment of the present invention further provides an illumination device D for reducing glare value, comprising: a light-emitting element 1 and an optical element 3, wherein the light-emitting element 1 can be used to provide a continuous The light source 10, and the optical component 3 includes a light transmissive body 30 and a micron grid structure 31.

First, as shown in FIG. 3, the light-transmitting body 30 has a light-incident surface 300 and a light-emitting surface 301 disposed opposite to the light-incident surface 300, wherein the light-incident surface 300 of the light-transmitting body 30 directly faces the direct-light source 10 . In addition, the micro-grid structure 31 is disposed on the light-emitting surface 301 of the light-transmitting body 30, wherein the micro-grid structure 31 can be composed of a plurality of stripes 310 protruding from the light-emitting surface 301, and each of the stripes 310 has at least one inclined surface. 3100.

Furthermore, a part of the light beam L1 (for example, a light beam of a small angle) generated by the direct-type light source 10 is directly projected from the light-emitting surface 301 after passing through the light-transmitting body 30 to form a first positive To the illumination beam B1. Furthermore, another part of the light beam L2 generated by the direct-type light source 10 (for example, a beam of a larger angle) is directly projected on the inclined surface 3100 of the strip 310 after passing through the light-transmitting body 30 to form a second positive To the illumination beam B2.

[Second embodiment]

Please refer to FIG. 4, which is a side view of the lighting device. A second embodiment of the present invention provides an illumination device D for reducing glare value, comprising: a light-emitting element 1, a light-guiding body 2 and an optical element 3, wherein the optical element 3 comprises a The light transmitting body 30 and the one micron grid structure 31.

First, the light-emitting element 1 can be used to provide a one-sided light source 11. A light incident surface 200 is formed at a side end of the light guiding body 20, wherein the light incident surface 200 of the light guiding body 2 directly faces the side input light source 11, and the top end of the light guiding body 2 forms a side light source. 11 to reflect the reflective layer 20. The light-transmitting body 30 may be connected to the light-guiding body 2 in an integrally formed manner or by an adhesive layer, and the light-transmitting body 30 has a light-emitting surface 301 disposed substantially perpendicular to the light-incident surface 200. The micro-grid structure 31 is disposed on the light-emitting surface 301 of the light-transmitting body 30, wherein the micro-grid structure 31 may be composed of a plurality of stripes 310 protruding from the light-emitting surface 301, and each of the stripes 310 has at least one inclined surface 3100.

Furthermore, a part of the light beam L1 (for example, a light beam of a small angle) generated by the side-entry light source 11 is directly projected from the light-emitting surface 301 after passing through the light-guiding body 2 and the light-transmitting body 30 in sequence. Exit to form a first forward illumination beam B1. In addition, another part of the light beam L2 (for example, a beam of a larger angle) generated by the side-entry light source 11 is directly projected on the inclined surface 3100 of the stripe 310 after sequentially passing through the light guiding body 2 and the light transmitting body 30. To form a second forward illumination beam B2.

[Third embodiment]

Please refer to FIG. 5, which is a side view of the lighting device. A third embodiment of the present invention provides an illumination device D for reducing glare value, comprising: a light-emitting element 1 and an optical element 3, wherein the optical element 3 comprises a light-transmitting body 30 and a micro-grid structure 31.

First, the light-emitting element 1 can be used to provide a one-sided light source 11. The light-transmitting body 30 has a light-incident surface 300 ′ and a light-emitting surface 301 disposed substantially perpendicular to the light-incident surface 300 ′, and the light-incident surface 300 ′ is formed at the side end of the light-transmitting body 30 and directly faces the side. Light source 11. The micro-grid structure 31 is disposed on the light-emitting surface 301 of the light-transmitting body 30, wherein the micro-grid structure 31 may be composed of a plurality of stripes 310 protruding from the light-emitting surface 301, and each of the stripes 310 has at least one inclined surface 3100. In addition, light The learning element 3 may further include a reflective layer 20 disposed opposite to each other with the light exit surface 301, which may be provided to the side entry light source 11 for reflection.

Furthermore, a part of the light beam L1 (for example, a light beam of a small angle) generated by the side-entry light source 11 is directly projected from the light-emitting surface 301 after passing through the light-transmitting body 30 to form a first positive To the illumination beam B1. Furthermore, another part of the light beam L2 (for example, a beam of a larger angle) generated by the side-entry light source 11 is directly projected on the inclined surface 3100 of the strip 310 after passing through the light-transmitting body 30 to form a second positive To the illumination beam B2.

Thereby, the optical element 3 of the present invention utilizes the microgrid structure 31 to create the effect of the grid, which can reflect or refract large angles of light to a small angle region, which effectively eliminates the large angle portion of the illumination device D on the side. The light. Also, since the large-angle light is guided to the small-angle area, it is possible to additionally increase the illumination in front of the illumination device D. In other words, the optical element 3 of the present invention can utilize the microgrid structure 31 to reduce the lateral light and increase the forward light. When the lateral light and the forward light are mutually elongated, the glare value can be greatly reduced. It is worth noting that, compared with the conventional ones, the conventional lamp has no micro-grid structure 31, so the conventional lamp will produce an illumination source with a relatively uniform light distribution, and the glare value of the large angle will be high. The phenomenon. However, since the optical element 3 of the present invention employs the microgrid structure 31, it is possible to concentrate the large-angle light to the center to effectively reduce the glare value at a large angle.

It is worth mentioning that, as shown in FIG. 6 to FIG. 8 , each stripe 310 may be one of straight stripe, horizontal stripe, wavy stripe and radial stripe according to different design requirements for reducing glare value. 6 to 8 show that the stripe 310 can be a radial stripe as an example, but the invention is not limited thereto. It should be noted that, as shown in FIG. 7, each strip 310 has a vertical surface 3101 corresponding to at least one inclined surface 3100 and perpendicular to the light exit surface 301. Moreover, as shown in FIG. 8, the optical element 3 of the present invention can directly replace the conventional grid structure P, and is easily and conveniently applied to conventional lamps.

[Possible effects of the examples]

In summary, the illuminating device and the optical component thereof can be disposed on the light-emitting surface 301 of the light-transmitting body 30 through the micro-grid structure 31, wherein the micro-mirror structure 31 is provided. The grid structure 31 is composed of a plurality of stripes 310 protruding from the light-emitting surface 301, and each of the stripes 310 has a design of at least one inclined surface 3100", so that the present invention can be effectively used not only to reduce the glare problem generated during illumination. (especially low glare), and can also help reduce overall costs and achieve environmental advantages.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, equivalent technical changes made by using the present specification and the contents of the drawings are included in the protection scope of the present invention. .

D‧‧‧Lighting device

1‧‧‧Lighting elements

10‧‧‧Direct light source

L1‧‧‧ part of the beam

L2‧‧‧Other part of the beam

B1‧‧‧First forward illumination beam

B2‧‧‧second positive illumination beam

3‧‧‧Optical components

30‧‧‧Lighting body

300‧‧‧Into the glossy surface

301‧‧‧Glossy

31‧‧‧microgrid structure

310‧‧‧ stripes

3100‧‧‧ sloped surface

Claims (10)

An optical component for reducing glare value, comprising: a light transmitting body, the light transmitting body having a light incident surface and a light emitting surface disposed opposite to the light incident surface, wherein the light transmitting body The light incident surface faces the direct light source; and a micro microgrid structure disposed on the light emitting surface of the light transmissive body, wherein the microgrid structure is protruded by a plurality of Each of the stripes has at least one inclined surface composed of stripes of the light-emitting surface. An optical element for reducing a glare value according to claim 1, wherein each of the stripes is one of a straight stripe, a horizontal stripe, a wavy stripe, and a radial stripe, each of which has a width facing away from each other The vertical direction of the light-emitting surface gradually becomes smaller, and each of the stripes has a vertical surface corresponding to at least one of the inclined surfaces and perpendicular to the light-emitting surface. A lighting device for reducing glare value, comprising: a light emitting element for providing a direct light source; and an optical component, the optical component comprising: a light transmitting body, the light transmitting body Having a light incident surface and a light exit surface disposed opposite to the light incident surface, wherein the light incident surface of the light transmissive body faces the direct light source; and a micro microgrid structure, the micro grid A gate structure is disposed on the light-emitting surface of the light-transmitting body, wherein the micro-grid structure is composed of a plurality of stripes protruding from the light-emitting surface, each of the stripes having at least one inclined surface. An illumination device for reducing a glare value according to claim 3, wherein each of the stripes is one of a straight stripe, a horizontal stripe, a wavy stripe, and a radial stripe, each of which has a width facing away from the width The vertical direction of the light-emitting surface gradually becomes smaller, and each of the stripes has one corresponding to at least one of the inclined surfaces and A vertical plane perpendicular to the light exiting surface. The illuminating device for reducing glare value according to claim 3, wherein a part of the light beam generated by the direct-type light source is directly projected from the light-emitting surface after passing through the light-transmitting body to form a light-emitting device. a first forward illumination beam, wherein another portion of the light beam generated by the direct-type light source passes through the light-transmissive body and is directly projected on the inclined surface of the stripe to form a second forward illumination beam . An optical component for reducing glare value, comprising: a light guiding body, a side end of the light guiding body forms a light incident surface, wherein the light incident surface of the light guiding body faces a side input light source And an optical component, the optical component includes: a light transmitting body, the light transmitting body is coupled to the light guiding body, wherein the light transmitting body has a light emitting surface disposed perpendicular to the light incident surface And a micro-mesh structure, the micro-grid structure is disposed on the light-emitting surface of the light-transmitting body, wherein the micro-grid structure is composed of a plurality of stripes protruding from the light-emitting surface, Each of the stripes has at least one inclined surface. An illumination device for reducing glare value, comprising: a light-emitting element for providing a one-side light source; a light guide body, a side end of the light guide body forming a light-incident surface, wherein The light incident surface of the light guiding body faces the side input light source; and an optical component, the optical component includes: a light transmitting body, the light transmitting body is connected to the light guiding body, wherein The light transmitting body has a light emitting surface disposed perpendicular to the light incident surface; and a micro microgrid structure disposed on the light emitting surface of the light transmitting body, wherein the micrometer The grill structure is protruded from a plurality of The strips of the light-emitting surface are composed, and each of the strips has at least one inclined surface. The illuminating device for reducing glare value according to claim 7, wherein a part of the light beams generated by the side-entry light source sequentially passes through the light guiding body and the light transmitting body, directly from the The light emitting surface is projected to form a first forward illumination beam, wherein another part of the light beam generated by the edge-lit light source is directly projected through the light guiding body and the light transmitting body The inclined faces of the stripes are formed to form a second forward illumination beam. An optical component for reducing glare value, comprising: a light transmitting body, the light transmitting body having a light incident surface and a light emitting surface disposed perpendicular to the light incident surface, wherein the light incident surface is formed a light source at a side end of the light-transmitting body facing the side; and a micro-grid structure disposed on the light-emitting surface of the light-transmitting body, wherein the micro-grid The structure is composed of a plurality of stripes protruding from the light exiting surface, each of the stripes having at least one inclined surface. An illumination device for reducing glare value, comprising: a light-emitting element for providing a one-side light source; and an optical element, the optical element comprising: a light-transmitting body, the light-transmitting The body has a light-incident surface and a light-emitting surface disposed perpendicular to the light-incident surface, wherein the light-incident surface is formed at a side end of the light-transmitting body and faces the side-entry light source; and a micron grid a gate structure, the micro-grid structure is disposed on the light-emitting surface of the light-transmitting body, wherein the micro-grid structure is composed of a plurality of stripes protruding from the light-emitting surface, each of the stripes There is at least one inclined surface.