CN108692260A - A kind of optical system of reduction distance light H-H dead lines - Google Patents

Abstract

The present invention relates to LED headlamp lens module optical technical fields, more particularly to a kind of optical system of reduction distance light H-H dead lines, including lens, baffle plate assembly, lampshade in dipped beam, dipped beam LED module, lampshade and distance light LED module in distance light, lampshade in dipped beam, dipped beam LED module, lampshade and distance light LED module are arranged in left side in distance light, lens are arranged on right side, baffle plate assembly is arranged in centre, the light that dipped beam LED module is sent out is irradiated to through lampshade in dipped beam on baffle plate assembly, the light that distance light LED module is sent out is irradiated to through lampshade in distance light on baffle plate assembly.Light reflection and the principle of refraction is utilized in the configuration of the present invention is simple, weakens in optical system in high-beam pattern H-H lines dipped beam residual dead line dark space nearby, improves distance light road illumination effect, meet the light distribution demand of double optical mode groups.

Description

An optical system for weakening high beam H-H cut-off line

technical field

The invention relates to the optical technical field of LED headlamp lens modules, in particular to an optical system for weakening the high beam H-H cut-off line.

Background technique

With the rapid popularization of LED lens modules in the field of headlight technology, more and more lens module forms are applied to headlights. Among them, the most used ones are LED low beam modules and dual light modules. Due to the advantages of high integration and relatively low cost, the dual optical module is favored by many automotive lighting manufacturers. However, in the dual-beam system, if a fixed baffle is used, the residual light pattern of the low-beam cut-off line will appear near the H-H line in the high-beam pattern, which will affect the illumination effect of the high-beam road surface and cause certain safety hazards .

Contents of the invention

The invention provides an optical system for weakening the H-H cut-off line of the high beam and improving the illumination effect of the high beam on the road surface.

In order to realize the purpose of the present invention, the adopted technical scheme is: a kind of optical system that weakens high beam H-H cut-off line, comprises lens, baffle assembly, low beam inner lampshade, low beam LED module, high beam inner lampshade and far The light LED module, the low beam inner lampshade, the low beam LED module, the high beam inner lampshade and the high beam LED module are arranged on the left side, the lens is arranged on the right side, the baffle assembly is arranged in the middle, and the low beam LED module emits The light from the low beam is irradiated on the baffle assembly through the low beam inner lampshade, and the light emitted by the high beam LED module is irradiated on the baffle assembly through the high beam inner lampshade.

As an optimized solution of the present invention, the baffle assembly includes a baffle and a metal plate, and the metal plate overlaps the baffle.

As an optimization scheme of the present invention, the light emitted by the low beam LED module is irradiated on the baffle assembly through the low beam inner lampshade, the light passes through the baffle assembly and passes through the lens to form a low beam cut-off line, and the light emitted by the high beam LED module After the light passes through the inner lampshade of the high beam, part of the light passes through the transparent part of the baffle and then overlaps the cut-off line of the low beam through the lens to form a high beam light pattern; the other part of the light directly hits the lower surface of the metal plate and the upper surface of the baffle , and then reflected to the lens to supplement the low beam residual dark area near the high beam H-H cut-off line.

As an optimized solution of the present invention, the baffle is a transparent part, and the upper surface of the baffle is partially plated with aluminum.

As an optimized solution of the present invention, the metal plate is a mirror-finished stainless steel plate.

As an optimized solution of the present invention, the metal plate is an ultra-thin mirror stainless steel plate, and the thickness of the metal plate is t≤0.2mm.

As an optimized solution of the present invention, the overlap between the baffle plate and the metal plate is fixed by sealing glue.

The present invention has positive effects: the present invention has a simple structure, utilizes the principles of light reflection and refraction, weakens the dark area of the low beam residual cut-off line near the H-H line in the high beam pattern in the optical system, improves the illumination effect of the high beam road surface, and satisfies both The light distribution requirements of the optical module.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of baffle assembly;

Fig. 3 is the structural representation of baffle;

Fig. 4 is a high-beam light pattern without using the present invention;

Fig. 5 is a diagram of a high beam light pattern using the present invention.

Among them: 1. Lens, 2. Baffle, 3. Metal plate, 4. Low beam inner lampshade, 5. Low beam LED module, 6. High beam inner lampshade, 7. High beam LED module.

Detailed ways

As shown in Figures 1-3, the present invention discloses an optical system for weakening the high-beam H-H cut-off line, including a lens 1, a baffle assembly, a low-beam inner lampshade 4, a low-beam LED module 5, and a high-beam inner lampshade 6 And the high beam LED module 7, the low beam inner lampshade 4, the low beam LED module 5, the high beam inner lampshade 6 and the high beam LED module 7 are arranged on the left side, the lens 1 is arranged on the right side, and the baffle assembly is arranged on the In the middle, the light emitted by the low-beam LED module 5 is irradiated on the baffle assembly through the low-beam inner lampshade 4 , and the light emitted by the high-beam LED module 7 is irradiated on the baffle assembly through the high-beam inner lampshade 6 .

The baffle assembly includes a baffle 2 and a metal plate 3 , and the metal plate 3 is lapped on the baffle 2 .

The light emitted by the low beam LED module 5 passes through the low beam inner lampshade 4 and irradiates on the baffle assembly, the light passes through the baffle assembly and passes through the lens 1 to form a low beam cut-off line, and the light emitted by the high beam LED module 7 passes through Behind the lampshade 6 in the high beam, a part of the light passes through the transparent part of the baffle plate 2 and then passes through the lens 1 and overlaps the low beam cut-off line to form a high beam light pattern; The upper surface is then reflected onto the lens 1 to supplement light in the residual dark area of the low beam near the high beam H-H cut-off line. Wherein, the light emitted by the low-beam LED module 5 passes through the low-beam inner lampshade 4 to the baffle 2 after total reflection and refraction, and passes through the lens 1 to form a low-beam cut-off line; the high-beam LED module 7 emits After passing through the high beam inner lampshade 6, a part of the light passes through the transparent part of the baffle plate 2, and is refracted by the lens 1 to form a high beam light pattern after overlapping with the low beam cut-off line; the other part of the light directly hits the metal plate The lower surface of 3 and the aluminum-plated upper surface of baffle 2 are reflected onto the lens 1, and fill light to the residual dark area of low beam near the high beam H-H cut-off line, and play a role in weakening.

The baffle plate 2 is a transparent part, and the transparent part can be plastic, and the upper surface of the baffle plate 2 is partially plated with aluminum, which is used for the reflection of part of the high-beam light.

The metal plate 3 is a mirror stainless steel plate. The metal plate 3 can be an ultra-thin mirror stainless steel plate, the reflectivity exceeds 60%, and the thickness t of the metal plate 3≤0.2mm. After the baffle 2 and the metal plate 3 are positioned, the overlap between the baffle 2 and the metal plate 3 is fixed by sealing.

As shown in Fig. 4 and 5, the high-beam light type comparison chart, it can be seen that the residual dark area of the low-beam cut-off line near the H-H line in the high-beam area has been significantly weakened.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. an optical system that weakens the high beam H-H cut-off line, is characterized in that: comprise lens (1), baffle assembly, low beam inner lampshade (4), low beam LED module (5), high beam inner lampshade ( 6) and the high-beam LED module (7), the low-beam inner lampshade (4), the low-beam LED module (5), the high-beam inner lampshade (6) and the high-beam LED module (7) are arranged on On the left side, the lens (1) is set on the right side, the baffle assembly is set in the middle, and the light emitted by the low beam LED module (5) shines on the baffle assembly through the low beam inner lampshade (4) , the light emitted by the high beam LED module (7) shines on the baffle assembly through the high beam inner lampshade (6). 2. A kind of optical system for weakening high beam H-H cut-off line according to claim 1, is characterized in that: described baffle plate assembly comprises baffle plate (2) and metal plate (3), and described metal plate ( 3) Overlap on the baffle (2). 3. An optical system for weakening the high beam H-H cut-off line according to claim 2, characterized in that: the light emitted by the low beam LED module (5) passes through the low beam inner lampshade (4) and irradiates the baffle assembly Above, the light passes through the baffle assembly and passes through the lens (1) to form a low beam cut-off line. After the light emitted by the high beam LED module (7) passes through the high beam inner lampshade (6), part of the light passes through the baffle (2 ) through the transparent part of the lens (1) to overlap the low beam cut-off line to form a high beam light pattern; the other part of the light directly hits the lower surface of the metal plate (3) and the upper surface of the baffle (2), and then reflects to the lens (1) Supplement light for the low beam remaining dark area near the high beam H-H cut-off line. 4. An optical system for weakening the high beam H-H cut-off line according to claim 2, characterized in that: the baffle (2) is a transparent member, and the upper surface of the baffle (2) is partially plated with aluminum. 5. An optical system for weakening the high beam H-H cut-off line according to claim 2, characterized in that: the metal plate (3) is a mirror-finished stainless steel plate. 6. The optical system for weakening the high beam H-H cut-off line according to claim 5, characterized in that: the metal plate (3) is an ultra-thin mirror stainless steel plate, and the thickness of the metal plate (3) is t≤0.2 mm. 7. The optical system for weakening the H-H cut-off line of high beam according to claim 2, characterized in that: the overlap between the baffle plate (2) and the metal plate (3) is fixed by sealing glue.