CN108469007B

CN108469007B - Optical assembly of light shield

Info

Publication number: CN108469007B
Application number: CN201710096068.8A
Authority: CN
Inventors: 陈有同; 蔡昀融
Original assignee: Acquisition Of New Technology Ltd By Share Ltd
Current assignee: Acquisition Of New Technology Ltd By Share Ltd
Priority date: 2017-02-22
Filing date: 2017-02-22
Publication date: 2020-01-03
Anticipated expiration: 2037-02-22
Also published as: CN108469007A

Abstract

A reticle optical assembly comprising: the optical assembly is made of transparent plastic materials and provided with a light inlet surface and a light outlet surface opposite to the light inlet surface, wherein the light outlet surface is provided with a plurality of micron grating structures, each micron grating structure comprises a first inclined surface, a second inclined surface and a plane, and the plane is arranged between the first inclined surface and the second inclined surface; therefore, when the micro-grid structure is used, the first inclined surface and the second inclined surface can reflect part of a straight-down light source emitted by a light source, a circulating light source is formed in the micro-grid structure, the circulating light source is reintegrated with the straight-down light source and emits the light together, emitted lumens can be increased through light source integration, and light can be concentrated to the center for utilization under the condition that lateral light and forward light are cyclically eliminated, so that the effect of reducing glare is achieved.

Description

Optical assembly of light shield

Technical Field

The present invention relates to an optical assembly, and more particularly, to a mask optical assembly capable of increasing lumens and reducing glare.

Background

In order to overcome the above-mentioned drawbacks, conventional lamps have a grid structure to block human eyes and point light sources, thereby reducing the glare value, but the grid structure still generates residual low glare.

In order to solve the above-mentioned disadvantages, a lampshade structure capable of reducing glare is commercially available, which is technically characterized in that a layer of coating such as light-blocking powder is coated on the original lampshade to block the generation of glare, and although the structure can reduce the generation of glare, the brightness of the original lamp light can be greatly reduced.

To solve the above problems, the present invention provides a mask optical assembly capable of increasing the lumen and reducing the glare.

Disclosure of Invention

The main objective of the present invention is to provide a mask optical assembly that can be effectively used to reduce the glare problem (especially low glare) generated during illumination, and at the same time can maintain the original brightness.

To achieve the above object, the technical means is that the mask optical assembly comprises: an optical component of transparent plastic material; the optical component is provided with a light inlet surface and a light outlet surface opposite to the light inlet surface, wherein the light outlet surface is provided with a plurality of micron grating structures, each micron grating structure comprises a first inclined surface, a second inclined surface and a plane, and the plane is arranged between the first inclined surface and the second inclined surface; therefore, when the light source module is used, the first inclined surface and the second inclined surface can refract a direct-type light source which is partially emitted from a light source, a circulating light source is formed to circulate in the micron grating structure, the circulating light source is integrated with the direct-type light source and then emits out of the optical assembly, emitted lumens can be increased through light source integration, and light can be concentrated to the center for utilization under the condition that lateral light and forward light are circularly eliminated, so that the effect of reducing the glare value is further achieved.

Wherein the optical component is made of transparent plastic material with light transmittance of above 60%, and is formed by extrusion or injection molding.

Wherein, the included angle formed by the first inclined surface and the second inclined surface is 70 degrees ^○To 100 ^○。

Wherein, the width of each micron grid structure is 1mm to 3mm, the height is 0.35mm to 1.05mm, the width of the plane is 0.15mm to 0.85mm, and the depth of the concave part is 0.02mm to 0.08 mm.

The light incident surface is a plane or an arc structure having a concave part corresponding to each micron grating structure.

Wherein, the grid shape of the micron grid structure is tetragonal or hexagonal.

When the light source emits light from the light incident surface, the transmittance of the light is 30% to 55%.

Wherein, when the light source emits from the light-emitting surface, the transmittance is 80% to 100%.

The light incident surface and the light emergent surface can be AG atomized surfaces so as to shield the lamp tube behind the optical assembly.

The light source can be emitted from the side edge of the optical component, and the light source entering from the side edge is converted into the direct type light source through a light guide plate made of transparent plastic materials and then emitted into the light incident surface.

The invention has the beneficial effects that: not only can increase the lumen, but also can reduce the glare value.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a top view of an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an embodiment of the present invention;

FIG. 4 is a schematic view of the present invention in use;

FIG. 5 is a schematic view of another embodiment of the present invention;

FIG. 6 is a top view of another embodiment of the present invention;

Fig. 7 is a cross-sectional view of yet another embodiment of the present invention.

Description of the reference numerals

10 optical assembly

100 light incident surface

1001 recess

101 light-emitting surface

11 micron grid structure

111 first inclined plane

112 second inclined plane

113 plane

20 light source

21 direct type light source

22 cycle light source

30 light guide plate

W1 first width

W2 second width

H1 first height

H2 second height

null

Detailed Description

In order to facilitate the examiner to further understand and understand the technical means and operation of the present invention, the following detailed description is given by way of example with reference to the accompanying drawings.

Referring to fig. 1, the present invention provides a mask optical device, comprising: an optical assembly 10, wherein the optical assembly 10 is formed by extruding or injection molding a transparent plastic material, and the penetrating power is more than 60%, wherein the transparent plastic material can be PS, PC, PP, acrylic, etc.

Referring to fig. 2 and 3, the optical assembly 10 has a smooth light incident surface 100 and a smooth light emitting surface 101 opposite to the light incident surface 100, wherein the light emitting surface 101 is provided with a plurality of micro-grid structures 11, and each micro-grid structure 11 forms a recess 1001 on the light incident surface 100; wherein, each micro-grid structure 11 has a first inclined plane 111 and a second inclined plane 112, respectively, and a plane 113 is provided between the first inclined plane 111 and the second inclined plane 112, so that the cross section of the micro-grid structures 11 presents an inverted trapezoid shape; moreover, the light incident surface 100 and the light emitting surface 101 may also be AG atomized surfaces processed by AG (anti glare), so as to shield the light source such as a bulb, a lamp tube or an LED lamp behind the optical assembly 10.

Referring to FIG. 3, the width W1 of the plane 113 of the optical device 10 is 0.15mm to 0.85mm, the width W2 of each micro-grid structure 11 is 1mm to 3mm, and the height H1 is 0.35mm to 1.05 mm; the depth H2 of the depression 1001 is 0.02mm to 0.08 mm.

Referring to fig. 4, in use, a light source 20 generates a direct light source 21 and emits the direct light source 21 into the light incident surface 100 from above the optical element 10, a portion of the direct light source 21 emits from the light emergent surface 101, and a portion of the direct light source 21 contacts the first inclined surface 111 of the micro-grid structure 11 and then is refracted for the first time to form a circulating light source 22, and the circulating light source 22 is refracted for the second time by the second inclined surface 112 and emits to the light source 20, and then is integrated with the direct light source 21 and then emits to the light emergent surface 101.

Referring to fig. 4, when the light source 20 emits from the light incident surface 100, the transmittance of the light is 30% to 55%, and when the light source 20 emits from the light emitting surface 101, the transmittance of the light is 80% to 55% 100%, therefore, the structure of the present invention circulates the light in the micro-grid structure 11, re-integrates and emits the light source that would be emitted by multiple refractions, and concentrates the light to the center for utilization under the mutual circulation extinction of the lateral light and the forward light, which can increase the forward light of more than 1 lumen, and can greatly reduce the glare value, in order to achieve the effect of circulating the light in the micro-grid structure 11, the included angle formed by the first inclined plane 111 and the second inclined plane 112 𝚹Is 70 ^○To 100 ^○。

In another use state of the present invention, referring to fig. 5, the light source 20 can be incident from the side of the optical assembly 10, and the incident light source 20 is converted into the direct type light source 21 through a light guide plate 30 made of transparent plastic material and incident into the light incident surface 100; the transparent plastic material of the light guide plate 30 may be PS, PC, PP, acrylic, or the like.

Referring to fig. 6, the grid shape of the micro grid structure 11 may be tetragonal (see fig. 2) or hexagonal.

Referring to fig. 7, the light incident surface 100 of the optical element 10 may be a plane without the recess 1001 (see fig. 3).

However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby; therefore, all the equivalent changes and modifications made by the claims and the content of the specification of the invention should be covered by the scope of the patent of the invention.

Claims

1. A mask optical assembly, comprising:

The optical component is made of transparent plastic materials and provided with a smooth light incoming surface and a smooth light outgoing surface which is opposite to the light incoming surface; and

The micro-grid structures are arranged on the light emitting surface and respectively provided with a first inclined surface and a second inclined surface, and a plane is arranged between the first inclined surface and the second inclined surface to form an inverted trapezoidal structure;

Wherein, a light is emitted from the right top of the light incident surface, part of the light is emitted from the light emitting surface, part of the light is refracted after contacting the first inclined surface and the second inclined surface to generate a circulating light source, and the circulating light source is integrated with the light source and then emitted, under the mutual circulation extinction of lateral light and forward light, the light can be concentrated to the center, thereby increasing the lumen and reducing the glare value;

The light incident surface is an arc-shaped structure which is provided with a concave part corresponding to each micron grating structure;

Each micro-grid structure has a width of 1mm to 3mm and a height of 0.35mm to 1.05mm, and the planar surface has a width of 0.15mm to 0.85mm, and the recessed portion has a depth of 0.02mm to 0.08 mm.

2. The mask optical element of claim 1 wherein the optical element is selected from transparent plastic materials having a transmittance of 60% or more, and is extruded or injection molded.

3. The mask optical element of claim 1 wherein the first bevel and the second bevel form an included angle of 70 degrees ^○To 100 ^○。

4. The mask optical element of claim 1, wherein the grating shape of the micro-grating structure is tetragonal or hexagonal.

5. The mask optical element according to claim 1, wherein the light source has a light transmittance of 30% to 55% when exiting from the light incident surface.

6. The mask optical element according to claim 1, wherein the transmittance of the light source is 80% to 100% when the light source is emitted from the light-emitting surface.

7. The mask optical element according to claim 1, wherein the light incident surface and the light emergent surface are AG fogging surfaces for shielding a lamp tube behind the optical element.

8. The mask optical element according to claim 1 wherein the light source is incident from a side edge of the optical element and passes through a light guide plate of transparent plastic material to convert the incident light source into the direct light source incident on the incident surface.