TWI704371B - Optical device - Google Patents

Abstract

An optical device is provided, including: a plurality of lens units, each of the lens units including a light incident side and a light exiting side, each light emitting side including a microstructured surface, and at least two of the microstructured surfaces of the plurality of lens units are arranged in a high and low configuration.

Description

Optical device

The invention relates to an optical device.

In the conventional vehicle lamp, for example, the lens has a single light-incident surface and a single light-emitting surface provided with a surface microstructure. It uses a single light source to project light through the light-incident surface and then is refracted and scattered by the surface microstructure and then emitted.

However, the lampshade of general car lamps is not flat and curved, and the light-emitting surface of the conventional lens is flat. Therefore, the distance between different parts of the light-emitting surface and the inner surface of the lampshade is different, resulting in the collection of different parts of the lens. The light effects are different, some of the light intensity is weak, and a single light source, a single light-incident surface and a single light-emitting surface cannot cooperate to produce a rich and varied stereoscopic visual effect.

Therefore, it is necessary to provide a novel and progressive optical device to solve the above-mentioned problems.

The main purpose of the present invention is to provide an optical device that can have a better light collection effect and a better stereoscopic visual effect.

In order to achieve the above objective, the present invention provides an optical device, including: a plurality of lens units, each of the lens units includes a light entrance side and a light exit side, each light exit side is provided with a microstructure surface, the microstructure surface of the multiple lens unit At least two of them are in high and low configuration.

The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention, and are described first.

Please refer to FIGS. 1 to 3, which show a preferred embodiment of the present invention. The optical device 1 of the present invention includes a plurality of lens units 10, each of the lens units 10 includes a light entrance side 11 and a light exit side 12, each The side 12 is provided with a microstructure surface 121. At least two of the microstructure surfaces 121 of the plural lens unit 10 are arranged in height. Preferably, all the microstructure surfaces 121 of the plural lens unit 10 are arranged in height. Thereby, each of the plurality of lens units 10 has a better light collection effect and a better stereo vision effect.

Preferably, at least two of the light incident sides 11 of the plurality of lens units 10 are located on the same plane P, and at least two of the plurality of lens units 10 have different longitudinal lengths. In this embodiment, the multiple lens unit 10 is integrally formed, which is easy to manufacture and low in cost. However, the multiple lens unit 10 is not integrally formed but can also be joined; all the light incident sides 11 of the multiple lens unit 10 are located on the same plane P The length of each lens unit 10 in the longitudinal direction (here, the direction perpendicular to the plane P) is different, all the microstructure surfaces 121 of the plurality of lens units 10 are arranged high and low, and the microstructure surfaces 121 of the plurality of lens units 10 are any two adjacent The height difference between the two is substantially the same, and the microstructure surface 121 of the plurality of lens units 10 can be substantially the same or exactly the same according to the shape of a cover 20 (such as the lamp housing of a vehicle's turn signal, headlight, or other lamps). It is possible that the same distance L, with all the micro-structured surfaces 121 in high and low configuration, produces a light effect with a drop, which can provide an excellent stereoscopic visual effect.

Each of the light incident sides 11 is provided with a concave cavity 111, and the concave cavity 111 is provided with a convex surface 112. The portion between the concave cavity 111 and the microstructure surface 121 of each lens unit 10 has a fixed cross section, (the plural lens unit The shape and size of the fixed cross section of 10 can be the same or different), and the light beam passing through the lens unit 10 after being collected by the convex surface 112 can be observed from the side, and the side light and shadow visual effect is good. Each lens unit 10 further includes an oblique surface 13 surrounding the cavity 111. A top edge 131 of the oblique surface 13 is closer to an opening 113 of the cavity 111 than the convex surface 112. The surface 13 can reflect and guide the light toward the light exit side 12, with uniform light and high light utilization. The optical device 1 further includes at least one lug 14, and the at least one lug 14 protrudes from at least one of the lens unit 10. Preferably, the optical device 1 includes a plurality of the lugs 14, and each lug 14 is penetrated by a set The connecting hole 141 is convenient for assembling (such as screw locking) to a lamp body or a car body.

The microstructure surface 121 of the multiple lens unit 10 includes at least one of arc-convex microstructure 122, tooth-type microstructure 123, arc-concave microstructure 124, and ring-convex microstructure 125, such as the microstructure of the multiple lens unit 10 The shape of the surface 121 can be all the same, part of the same, or all different, which can produce uniform, different areas, and different intervals.

In other embodiments, at least two of the light incident side 11 of the multiple lens unit 10a can be configured high and low, and the longitudinal length of at least two of the multiple lens unit 10a can be the same, for example, the implementation shown in FIGS. 4 to 6 For example, all the light-incident sides 11 of the multiple lens unit 10a are arranged high and low, and this structure type is easier to injection molding.

The optical device 1 may further include a plurality of light-emitting units 30, and each of the light-emitting units 30 includes a circuit unit 31 opposite to a light incident side 11 and a light emitting element disposed on the circuit unit 31 and facing a light incident side 11 32. In the structure shown in Figures 1 to 3, all the light incident sides 11 of the multiple lens unit 10 are located on the same plane P, and only a circuit board with multiple light emitting elements 32 and multiple circuit units 31 is required; In the structures of FIGS. 4 to 6, all the light-incident sides 11 of the plurality of lens units 10a are arranged high and low, and the light-incident sides 11 of each lens unit 10a are correspondingly provided with a circuit unit 31a provided with at least one light-emitting element 32. In each of the above embodiments, the plurality of light-emitting elements 32 can emit light at the same time or at different times, have the same light color or different light colors, and can have variable light-emitting modes and effects.

1: Optical device 10, 10a: lens unit 11: Light incident side 111: cavity 112: Convex 113: opening 12: Light emitting side 121: Microstructured surface 122: Arc convex microstructure 123: Tooth microstructure 124: Arc-concave microstructure 125: Ring-convex microstructure 13: Inclined surface 131: top edge 14: Ear 141: Assembly hole 20: Hood 30: light-emitting unit 31, 31a: circuit unit 32: Light-emitting element L: distance P: plane

Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is a cross-sectional view of a preferred embodiment of the present invention. Fig. 3 is a schematic diagram of the application of a preferred embodiment of the present invention. Figure 4 is a perspective view of another preferred embodiment of the present invention. Figure 5 is a cross-sectional view of another preferred embodiment of the present invention. Fig. 6 is an application diagram of another preferred embodiment of the present invention.

1: Optical device

10: lens unit

122: Arc convex microstructure

123: Tooth microstructure

124: Arc-concave microstructure

125: Ring-convex microstructure

13: Inclined surface

131: top edge

14: Ear

141: Assembly hole

Claims (10)

An optical device comprising: a plurality of lens units, each of the lens units includes a light entrance side and a light exit side, each light exit side is provided with a microstructure surface, and at least two of the microstructure surfaces of the plural lens unit are arranged in height; Wherein, each of the light incident sides is provided with a cavity, and the portion between the cavity of each lens unit and the surface of the microstructure has a fixed cross section; the fixed cross sections of the plurality of lens units are all the same; the optical device further includes at least one connector The at least one lug is convexly arranged on at least one of the lens units, and each lug is provided with a set of holes. The optical device according to claim 1, wherein at least two of the light incident sides of the plurality of lens units are located on the same plane. The optical device according to claim 1, wherein at least two of the light incident sides of the plurality of lens units are arranged in a high and low configuration. The optical device according to claim 1, wherein at least two of the plurality of lens units have different longitudinal lengths. The optical device according to claim 1, wherein at least two of the plurality of lens units have the same longitudinal length. The optical device according to claim 1, wherein a convex surface is provided in the cavity. The optical device according to claim 6, wherein each of the lens units further includes a tapered surface surrounding the cavity, and a top edge of the tapered surface is closer to an opening of the cavity than the convex surface. The optical device according to claim 7, wherein the plural lens units are integrally formed; all the light incident sides of the plural lens units are located on the same plane; all the microstructure surfaces of the plural lens units are arranged in height; the longitudinal direction of each lens unit The lengths are different; the height difference between any two adjacent microstructure surfaces of the plural lens unit is substantially the same. The optical device according to any one of claims 1 to 8, wherein the microstructure surface of the plurality of lens units includes at least one of arc-convex microstructures, tooth-type microstructures, arc-concave microstructures, and ring-convex microstructures . The optical device according to claim 9, further comprising a plurality of light-emitting units, each of the light-emitting units includes a circuit unit opposite to a light incident side and a light-emitting element provided on the circuit unit and facing a light incident side.

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