Anti-dazzle optical structure and lamp

Abstract

The utility model provides an anti-glare optical structure and a lamp. The anti-glare optical structure comprises a micro-lens plate, the micro-lens plate comprises a plurality of micro-lenses arranged in an array, and each micro-lens comprises a base part and a tip part protruding out of the base part. The base part and the tip part are integrally formed and are in smooth transition through an arc, in the axial section of the micro lens, the base part is provided with an outer surface which is a convex curved surface, and the outer surface of the tip part is a concave curved surface. The lamp provided by the embodiment of the utility model has the anti-dazzle optical structure. The micro lens plate provided by the utility model can weaken the light intensity when gamma is greater than 75 degrees, and the anti-dazzle effect is excellent.

Description

Technical Field

[0001] The present application relates to the technical field of lamps, and in particular to an anti-glare optical structure and a lamp. Background Art

[0002] The optical structure of the existing luminaire light-emitting surface (such as the combination of light guide plate and prism plate) mainly considers the uniformity of the irradiated surface and ignores the glare problem. Figure 3 Among the light emitted by the light source, the light whose angle γ with the vertical downward line segment at the light source is greater than 75° (tending to be horizontal) is difficult to be weakened by the existing optical structure and is prone to cause glare problems.

[0003] Patent No. CN207921770U discloses an anti-glare LED panel light, which specifically discloses a microstructure optical plate and various shapes of microstructures therein, in order to achieve the purpose of anti-glare. However, there is still room for improvement in its anti-glare effect. Utility Model Content

[0004] In order to improve or solve at least one of the problems mentioned in the background art, the present application discloses an anti-glare optical structure and a lamp.

[0005] The anti-glare optical structure provided in the embodiment of the present application includes a microlens plate, the microlens plate includes a plurality of microlenses arranged in an array, the microlens includes a base and a tip protruding from the base, the base and the tip are integrally formed and smoothly transitioned through a circular arc, and in an axial cross-section of the microlens, the base has an outer surface that is a convex curved surface, and the outer surface of the tip is a concave curved surface.

[0006] In at least one embodiment, the radius of curvature of the convex surface of the base portion is smaller than the radius of curvature of the concave surface of the tip portion.

[0007] In at least one embodiment, the microlens plate further includes a substrate and an adhesive layer, the adhesive layer connects the substrate and the microlenses, and the base is connected to the adhesive layer.

[0008] In at least one embodiment, the microlens is a rotationally symmetric structure.

[0009] In at least one embodiment, the material of the substrate is polystyrene, and the material of the adhesion layer is polyethylene terephthalate.

[0010] In at least one embodiment, the anti-glare optical structure includes a light guide plate, a diffusion plate, and the microlens plate arranged in sequence.

[0011] In at least one embodiment, the tip faces away from the diffuser plate.

[0012] In at least one embodiment, the anti-glare optical structure includes a reflective film, and the reflective film is disposed on a side of the light guide plate away from the diffuser plate.

[0013] The lamp provided in the embodiments of the present application includes the anti-glare optical structure as described above.

[0014] In at least one embodiment, the lamp is a vertical floor lamp.

[0015] The present application provides an anti-glare optical structure including a microlens plate. The microlenses on the microlens plate have a base and a tip that are integrally formed and smoothly transitioned through a circular arc, which can reduce the light intensity when γ is greater than 75° and has an excellent anti-glare effect.

[0016] The lamp provided in the present application applies the above optical structure and also has the above advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an anti-glare optical structure according to an embodiment of the present application is shown.

[0018] Figure 2 A schematic structural diagram of a microlens in a microlens plate of an anti-glare optical structure according to an embodiment of the present application is shown.

[0019] Figure 3 A test site schematic diagram of a lamp brightness test is shown.

[0020] Figure 4 A brightness limit curve diagram of a lamp according to an embodiment of the present application is shown.

[0021] Figure 5 The figure shows the brightness limit curve of existing common lamps.

[0022] Description of Reference Numerals

[0023] 100 microlens plate; 110 microlens; 111 base; 112 tip; 120 substrate; 130 attachment layer; 200 light guide plate; 300 diffusion plate; 400 reflective film. DETAILED DESCRIPTION

[0024] The exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not intended to exhaust all possible methods of the present application, nor to limit the scope of the present application.

[0025] The embodiments of the present application provide an anti-glare optical structure and a lamp.

[0026] See also Figure 1 , Figure 2The anti-glare optical structure provided in the embodiment of the present application may include a microlens plate 100, and the microlens plate 100 may include a plurality of microlenses 110 arranged in an array. The microlens 110 may include a base 111 and a tip 112 protruding from the base 111, and the base 111 and the tip 112 are integrally formed and smoothly transitioned through an arc. It can be understood that it is clearly distinguished from the lens structure with a circular or triangular cross section in the existing prism plate.

[0027] In one embodiment of the present application, in the axial cross section of the microlens 110, the center of the inscribed circle of the arc of the base 111 and the center of the inscribed circle of the arc of the tip 112 are located on opposite sides of the contour of the microlens 110. For example, Figure 2 The inscribed circle of the arc of the middle base portion 111 is approximately located at the upper side, and the inscribed circle of the arc of the tip portion 112 is approximately located at the lower side. Figure 2 In the embodiment, the base 111 has an outer surface that is a convex surface, and the outer surface of the tip 112 is a concave surface. The curvature radius of the convex surface of the base 111 may be smaller than the curvature radius of the concave surface of the tip 112. The microlens 110 may be a rotationally symmetrical structure.

[0028] In one embodiment of the present application, the microlens plate 100 may further include a substrate 120 and an adhesive layer 130 , wherein the adhesive layer 130 is disposed between the substrate 120 and the microlens 110 , and the bottom surface of the base 111 of the microlens 110 is connected to the adhesive layer 130 .

[0029] In one embodiment of the present application, the material of the substrate 120 may be transparent polystyrene (PS). The material of the adhesion layer 130 may be transparent polyethylene terephthalate (PET). Of course, the present application does not limit the specific material. The substrate 120 may provide the necessary hardness for the microlens plate 100, and the adhesion layer 130 facilitates the connection between the microlens 110 and the substrate 120.

[0030] In another example of the present application, the lenticular plate 100 may be made of a single material and not have a layered structure.

[0031] In one embodiment of the present application, the anti-glare optical structure may include a light guide plate 200 , a diffusion plate 300 , and a microlens plate 100 arranged in sequence. The tip 112 of the microlens 110 is away from the diffusion plate 300 .

[0032] In one embodiment of the present application, the anti-glare optical structure includes a reflective film 400 , and the reflective film 400 is disposed on a side of the light guide plate 200 away from the diffuser plate 300 .

[0033] The lamp provided in the embodiments of the present application may include the anti-glare optical structure as described above.

[0034] In one embodiment of the present application, the lamp is a vertical floor lamp. Of course, the present application does not limit the specific type of the lamp.

[0035] The optical structure with the microlens plate 100 of the present application can deflect large-angle light, narrow the light distribution curve, reduce the light intensity of light with γ greater than 75°, and reduce glare.

[0036] For comparison, see Table 1, Table 2, Figure 3 , Figure 4 and Figure 5 The present application conducted an experimental comparison between ordinary lamps and the lamps provided by the implementation methods of the present application and obtained corresponding data.

[0037] Table 1 Points of the brightness limit curve of lamps with anti-glare optical structure

[0038]

[0039] Table 2 Points of the brightness limit curve of a lamp with a common prism plate

[0040]

[0041]

[0042] It can be seen that when γ is greater than 75°, the light intensity in Table 1 is significantly lower than the light intensity in Table 2, that is, the lamp provided in the present application successfully suppresses light with γ greater than 75° and reduces the occurrence of glare.

[0043] The above is a preferred embodiment of the present application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An anti-glare optical structure, characterized in that: The invention comprises a microlens plate, wherein the microlens plate comprises a plurality of microlenses arranged in an array, wherein the microlens comprises a base and a tip protruding from the base, wherein the base and the tip are integrally formed and smoothly transitioned through a circular arc, and in an axial section of the microlens, the base has an outer surface which is a convex curved surface, and the outer surface of the tip is a concave curved surface.

2. The anti-glare optical structure according to claim 1, characterized in that: The curvature radius of the convex surface of the base portion is smaller than the curvature radius of the concave surface of the tip portion.

3. The anti-glare optical structure according to claim 1, characterized in that: The microlens plate further includes a substrate and an adhesive layer, the adhesive layer connects the substrate and the microlenses, and the base is connected to the adhesive layer.

4. The anti-glare optical structure according to claim 1, characterized in that: The microlens is a rotationally symmetrical structure.

5. The anti-glare optical structure according to claim 3, characterized in that: The material of the substrate is polystyrene. The material of the adhesion layer is polyethylene terephthalate.

6. The anti-glare optical structure according to claim 1, characterized in that: The anti-glare optical structure comprises a light guide plate, a diffusion plate and the microlens plate which are arranged in sequence.

7. The anti-glare optical structure according to claim 6, characterized in that: The tip portion is away from the diffuser plate.

8. The anti-glare optical structure according to claim 6, characterized in that: The anti-glare optical structure comprises a reflective film, and the reflective film is arranged on a side of the light guide plate away from the diffusion plate.

9. A lamp, characterized in that: The anti-glare optical structure comprises the anti-glare optical structure according to any one of claims 1 to 8.

10. The lamp according to claim 9, characterized in that: The lamp is a vertical floor lamp.

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