TWI617771B - Optical lens of car lamp - Google Patents

Abstract

The present invention relates to an optical lens for a vehicle lamp, which is mainly provided with an optical lens which is mounted inside the lamp and is illuminated by the light emitted by the light-emitting element, and the optical lens comprises a light-incident surface and a light-emitting surface. The light-incident surface receives the light from the light-emitting element, and is refracted by the optical lens to be illuminated by the light-emitting surface. The end surface of the light-incident surface is provided with a dot structure, and the dot structure is a regularly arranged microstructure; The use of microstructures allows light to increase the multi-refraction effect inside the optical lens, so as to expand the light-emitting range, so that the illuminated light type can meet the vehicle lighting inspection regulations, and at the same time improve the illumination brightness and driving safety.

Description

Optical lens for headlights

The invention relates to an optical lens of a lamp, in particular to an optical lens of a lamp which can widely increase the illumination area and the light type and improve the illumination brightness effect, so as to increase the safety of driving.

According to the general vehicle, the lights with different functions are installed on the front of the vehicle. The light shape and light trace of each type of light must comply with the regulations. The light patterns of the low beam and fog lights of the general vehicles are It is a horizontal ellipse and is located below a horizontal optical axis. Although this light-shaped headlight can achieve the purpose of close-range illumination, since the light is concentrated below the horizontal optical axis, it is located at the horizontal light. The area above the shaft is darker, and the driver is less able to recognize higher-position items such as traffic signs when driving at night. Therefore, such conventional lights usually require a supplemental structure.

Recently, in order to improve driving safety, the illumination light shape design of automobile lamps is gradually required to improve the contrast of lighting; traditional headlights are gradually eliminated by projection lamps due to difficulty in meeting current international norms and requirements, and projection lamp illumination The system has many advantages, such as:

1. It can have a lower headlight height, so this feature can be used to design a composite luminaire that can adapt to various road conditions, and can improve different road lighting when driving on curved roads, forks and highways to improve driving safety.

2. The projection type lamp can cooperate with the light shielding film to produce a clear cut-off line than the traditional headlight, which makes the driver's eyes on the opposite side feel more comfortable.

3. The transparent lamp housing is used as protection instead of diffusing or deflecting the light. Therefore, the lamp housing with a large inclination angle can be used, so that the front and the lamp shape can be designed to be smoother and more varied.

The optical system of the general projection type lamp, such as Taiwan Patent Publication No. M451276 "Adjustable Far and Near Light Structure", Announcement No. M470774 "Headlight Optical Structure", Announcement No. I521164 "Vehicle Projection Structure" and Announcement No. M481848 "Automotive Lamps", which are generally composed of a mirror surface, a light source, a light shielding film and a lens; the mirror surface is used to concentrate the light emitted by the light source to a focus point, and then the projection lens is moved to make the lens focus It coincides with the focus point and blocks a part of the light source by one of the specific shapes to project a desired light pattern having a Cut-off Line.

In actual use, it is found that the general light is focused by the mirror and then injected into the lens, and the illumination light is refracted by the curved surface of the lens. As shown in the ninth figure, the range of the light to be illuminated is represented by the light domain diagram, and the light-dark cut-off line is displayed. Downward, the central part has a bright illumination area, which is indicated as a bright area (A), and a dark area (B) with insufficient light source is formed on both sides, causing a limitation in the range in which the light type can be illuminated. There is still room for improvement in the overall structural design.

The reason is that the inventor has been rich in design and development and practical production experience of the relevant industry for many years, and has researched and improved the existing structure to provide an optical lens for the lamp to achieve better practical value.

The main object of the present invention is to provide an optical lens for a vehicle lamp, and more particularly to an optical lens of a vehicle lamp which can widely increase the illumination area and the light type and improve the illumination brightness effect, so as to increase driving safety.

The main purpose and effect of the optical lens of the lamp of the invention are achieved by the following specific technical means:

The optical lens is disposed in the interior of the lamp, and the light emitted by the light-emitting component is provided with an illumination optical lens. The optical lens includes a light-incident surface and a light-emitting surface, and the light-incident surface receives light from the light-emitting component. Having the optical lens refracted and being illuminated by the light-emitting surface, wherein the end surface of the light-incident surface is provided with a dot structure, and the dot structure is a regularly arranged microstructure; thereby, the microstructure is used to increase the light inside the optical lens. The refraction effect can expand the light-emitting range, so that the illuminated light type can meet the vehicle lighting inspection regulations, and at the same time improve the lighting brightness and driving safety.

A preferred embodiment of the optical lens of the vehicle lamp of the present invention, wherein the microstructure is a concave portion recessed in the light incident surface, and the concave portion is an arc groove.

A preferred embodiment of the optical lens of the lamp of the present invention, wherein the microstructure is a convex portion protruding from the light incident surface, and the convex portion is an arc bump.

A preferred embodiment of the optical lens of the lamp of the present invention, wherein the dot structure is a microstructure arranged in a regular radial arrangement.

A preferred embodiment of the optical lens of the lamp of the present invention, wherein the dot structure is a microstructure arranged in a regular grid pattern.

this invention:

(1) ‧‧‧ optical lens

(11)‧‧‧Into the glossy surface

(12) ‧‧‧Glossy

(2) ‧‧‧ outlet structure

(21)‧‧‧Microstructure

(211)‧‧‧ recess

(212) ‧‧‧ convex

(A) ‧ ‧ bright areas

(B) ‧‧ dark areas

The first figure shows a stereoscopic appearance of the first embodiment of the present invention.

Second figure: a schematic plan view of a first embodiment of the present invention

Third drawing: a schematic cross-sectional view of the optical lens of the present invention

Fourth figure: a schematic view of the stereoscopic appearance of the second embodiment of the present invention

Figure 5 is a schematic plan view of the second embodiment of the present invention

Figure 6 is a partially enlarged cross-sectional view showing the microstructure (concave portion) of the present invention

Figure 7 is a partially enlarged cross-sectional view showing the microstructure (convex portion) of the present invention

Figure 8: Schematic diagram of the illumination area generated by the optical lens of the present invention

Figure 9: Schematic diagram of the illumination area generated by the prior art optical lens

For a more complete and clear disclosure of the technical content, the purpose of the invention and the effects thereof achieved by the present invention, it is explained in detail below, and please refer to the drawings and drawings:

First, the practical application techniques and means of the present invention, as shown in the first to third figures, are the three-dimensional appearance, plane and cross-sectional view of the optical lens of the lamp of the present invention, which are mainly provided with a light-emitting component installed inside the lamp. The emitted light illuminates an optical lens (1), wherein the optical lens (1) includes a light incident surface (11) and a light exit surface (12), and the light incident surface receives the light emitting element. The light is irradiated by the light-emitting surface (12) through the internal refraction of the optical lens (1), wherein the end surface of the light-incident surface (11) is provided with a dot structure (2), and the dot structure (2) It is composed of a regularly arranged microstructure (21) for increasing the effect of the incident light on the inside of the optical lens (1) to form a diffuse diffusion.

Please refer to the first to seventh figures. When used, the optical lens (1) is installed inside the lamp, and its lamp type is various. If you need to use the cover to control the distance of the vehicle, switch the lights. a locomotive headlight, etc., a lamp device that illuminates the light by an optical lens; the optical lens (1) is mounted in front of the light-emitting element in the vehicle lamp, and mainly includes a light-incident surface (11) and a light-emitting surface (12) receives light from the light-emitting element by using the light-incident surface (11), and allows the dot structure distributed on the end surface of the light-incident surface (11) when the light is incident on the light-incident surface (11) ( 2) Come Increasing the light received into the optical lens (1), when the light penetrates into the regularly arranged microstructure (21), each of the microstructures (21) can diffuse the light again, so that the light is continuously in the optical lens (1) Refraction, which causes the light to diffuse and diffuse inside the optical lens (1). Thus, when the light is optically emitted through the light-emitting surface (12) to form a desired light pattern, the illumination brightness can be improved. The light is even and bright, and it can effectively compensate the dark area brightness caused by the illumination of the lamp.

In addition, in the optical lens of the lamp of the present invention, the dot structure (2) is arranged in a regular grid pattern (as shown in the first to second figures) or in a regular radial arrangement [as shown in the third to fourth figures]. The microstructure (21) is formed; and the microstructure (21) adopts a concave portion (211) recessed in the light incident surface (11) [as shown in the sixth figure], or a convex light entrance surface (11) The convex portion (212) is implemented [as shown in the seventh figure], and both the concave portion (211) and the convex portion (212) can effectively uniform light brightness and improve illumination brightness. Further, the concave portion (211) may adopt an arc groove, and the convex portion (212) adopts an arc convex particle.

The present invention provides a schematic diagram of the optical domain generated by the optical lens of the present invention through actual experimental results. Referring to the eighth embodiment, the illumination optical domain pattern represented by the optical lens of the present invention is compared with the optical domain of the conventional optical lens. As shown in the ninth figure, it can be seen that the central portion below the cut-off line has a bright illumination area, which is represented as a bright area, and also has sufficient light sources on both sides, when the light penetrates into the regularly arranged microstructure of the present invention. Each of the microstructures (21) can diffuse the light again, causing the light to refract continuously in the optical lens (1), and let the light form a diffuse diffusion effect inside the optical lens (1) when the light passes through When the light-emitting surface (12) is optically irradiated to form a desired light pattern, the illumination brightness can be improved, the light is evenly brightened, and the brightness of the dark area of the lamp can be effectively compensated.

However, the above-described embodiments or drawings are not intended to limit the structure or the use of the present invention, and any suitable variations or modifications of the invention will be apparent to those skilled in the art.

From the above, the composition and use of the structure of the present invention show that the present invention has the following advantages as compared with the existing structure:

The optical lens of the lamp of the invention has the effect of increasing the incident light into the optical lens to form a diffuse diffusion by regularly arranging the microstructure, so that when the light is irradiated through the optical surface of the light-emitting surface, not only will it not be Affecting the original preset light type, it can increase the brightness of the illumination, make the light even and bright, and at the same time effectively complement the brightness of the dark area of the lamp.

In summary, the embodiments of the present invention can achieve the expected use efficiency, and the specific structure disclosed therein has not been seen in similar products, nor has it been disclosed before the application, and has completely complied with the provisions of the Patent Law. And the request, the application for the invention of a patent in accordance with the law, please forgive the review, and grant the patent, it is really sensible.

Claims (4)

An optical lens of a vehicle lamp, which is mainly provided with an optical lens mounted inside the lamp and illuminated by the light emitted by the light-emitting element, wherein: the optical lens comprises a light-incident surface and a light-emitting surface, The light-incident surface receives the light from the light-emitting element and is refracted by the optical lens to be illuminated by the light-emitting surface. The light-emitting surface is provided with a dot structure on the end surface of the light-incident surface, and the dot structure is a regularly arranged microstructure. According to the configuration, the microstructure is a concave portion that is concave on the light incident surface. The optical lens of the vehicle lamp of claim 1, wherein the dot structure is a microstructure arranged in a regular grid shape. The optical lens of the vehicle lamp of claim 1, wherein the dot structure is a microstructure arranged in a regular radial arrangement. The optical lens of the vehicle lamp of claim 2, wherein the recess is an arc groove.