Lens structure for forming III area of car lamp module and car lamp

Abstract

The invention provides a lens structure for forming a car lamp module III area and a car lamp. The lens structure comprises a lens body, and a light source integration component and a light emitting integration component are arranged at the two ends of the lens body respectively; the lens body is provided with a cut-off line component, a III-area light inlet component and a III-area light outlet component which are located between the light source integration component and the light outlet integration component. Part of the light entering the lens body through the light source integration component is emitted from the light emitting integration component after passing through the cut-off line component, and part of the light is emitted from the light emitting integration component after passing through the III-area light entering component and the III-area light emitting component in sequence. According to the characteristic that a transmission material can transmit light, a corresponding optical structure is arranged, and part of light deviates from a main light path and then is transmitted above a cut-off line to form a vehicle lamp III area.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamps, and in particular to a lens structure for forming a III zone of a vehicle lamp module and a vehicle lamp. Background Art

[0002] Regarding the III zone structure on the headlight module, there are currently two common ways to set up the III zone on the market, namely, a reflective independent reflective structure and a conventional lens with a microstructure module added. The main structure of the reflective independent reflective structure is shown below: Figure 5 As shown in the figure, it is mainly limited to the zone III setting of the reflective module, that is, part of the light in the reflective bowl is reflected to the reflective plate under the shading plate to form the zone III structure. This method has a complex structure and requires a separate reflective plate device or spraying reflective materials on the corresponding surface, which is costly. The main structure of the conventional lens microstructure to form zone III is shown in the figure. Figure 6 As shown, the main idea is to deflect part of the light in the light pattern to zone III through the microstructure set on the lens surface. The limitation of this method is that the deflected light comes from the main light pattern, which will destroy the uniformity of the original light pattern. In addition, the lens surface is the customer's modeling surface, and the presence of the microstructure will affect the neatness of the module appearance. Compared with the zone III setting of the above two commonly used structures, the present invention solves the shortcomings of the above two commonly used structures and improves the light efficiency and uniformity.

[0003] The patent document with the publication number CN212719552U discloses a headlight module, a headlight and a vehicle. The headlight module includes a headlight optical element, a light source corresponding to the headlight optical element, a lens located on the light path of the headlight optical element and a III zone forming structure for forming a low beam III zone light shape. The light emitted by the light source is projected to the lens via the headlight optical element, and then can form an auxiliary low beam light shape and a low beam III zone light shape after being projected by the lens; wherein, the auxiliary low beam light shape and the low beam III zone light shape can be superimposed with the main low beam light shape to form an overall low beam light shape, and the upper boundary angle of the low beam III zone light shape is greater than +4°, the lower boundary angle is +1° to +2°, the left boundary angle is less than -8°, and the right boundary angle is greater than +8°. However, the III zone of the patent document needs to be provided with corresponding structures at both the light source end and the lens end, and the structure provided at the lens end will affect the appearance of the module. Summary of the invention

[0004] In view of the defects in the prior art, an object of the present invention is to provide a lens structure and a vehicle lamp for forming zone III of a vehicle lamp module.

[0005] According to the present invention, a lens structure for forming a zone III of a vehicle lamp module comprises: a lens body, wherein two ends of the lens body are respectively provided with a light source integration component and a light output integration component;

[0006] The lens body is provided with a cut-off line component, a zone III light input component and a zone III light output component located between the light source integration component and the light output integration component;

[0007] The light entering the lens body through the light source integration component: part of the light passes through the cut-off line component and then exits from the light output integration component, and part of the light passes through the zone III light input component and the zone III light output component in sequence and then exits from the light output integration component.

[0008] Preferably, the cut-off line component comprises a cut-off line component lower portion and a cut-off line component upper portion;

[0009] The lower part of the cut-off line component, the zone III light incident component, the upper part of the cut-off line component and the zone III light emitting component are sequentially connected and arranged along the light emitting direction.

[0010] Preferably, the lower part of the cut-off line component and the zone III light incident component are connected and the upper part of the cut-off line component is arranged in a step shape.

[0011] Preferably, the symmetry axis of the light source integration component is arranged horizontally or inclined relative to the lower part of the cut-off line component.

[0012] Preferably, a light adjustment component is provided on the zone III light emitting component, and the light adjustment component is used to adjust the light so that it meets the requirements of corresponding regulations.

[0013] Preferably, the light adjustment component is any one of the following: a pit structure, a convex dot structure, and a pattern structure.

[0014] Preferably, the light emitting component in zone III is a planar structure or a curved structure.

[0015] Preferably, the component integrated with the light source is a reflective cup structure.

[0016] Preferably, optical leather grain is provided on the surfaces of the zone III light incident component and the zone III light emitting component.

[0017] The present invention also provides a vehicle lamp, comprising the above-mentioned lens structure for forming zone III of the vehicle lamp module.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention improves the light efficiency. In the past, the common projection type module cut the light input concentrator to form an incomplete concentrator before setting the low beam zone III to ensure that there is no stray light interference in zone III. Figure 7As shown, cutting part of the light will reduce the efficiency of the overall system, while the present invention retains the complete concentrator. The core concept of the present invention is to control some uncontrollable stray light through the corresponding structure and convert the stray light into useful light in zone III, thereby greatly improving the design efficiency of the system.

[0020] 2. The present invention avoids reducing uniformity. Since the light of zone III of the present invention is independent of the light of the main light type, the setting of the light of zone III will not affect the main light type, thereby avoiding the possibility of reducing the uniformity of the main light type.

[0021] 3. The present invention sets Zone III on an existing optical device, and there is no need to add new parts to realize Zone III. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 A schematic diagram of the structure of the lens structure used to form the III zone of the vehicle lamp module;

[0024] Figure 2 A top view of the lens structure used to form the III zone of the vehicle lamp module and a partial enlarged view of its A portion;

[0025] Figure 3 A cross-sectional view of a lens structure used to form zone III of a vehicle lamp module and a partial enlarged view of its C portion;

[0026] Figure 4 Schematic diagram of the lighting effect of the main light type and zone III;

[0027] Figure 5 It is a structural schematic diagram of a reflective independent reflection structure;

[0028] Figure 6 It is a schematic diagram of the structure of the lens microstructure forming zone III;

[0029] Figure 7 It is a schematic diagram of the structure of an incomplete concentrator and a complete concentrator;

[0030] Figure 8 This is a schematic diagram of the regulatory value requirements for LED headlamps in Zone III according to GB-25991;

[0031] Fig. 9 This is a schematic diagram of the structure of the position points on the lens body that affect the light in zone III.

[0032] The figure shows:

[0033] Lens body 1 Zone III light-entering component 103

[0034] Light source integration component 101 Zone III light emitting component 104

[0035] Cut-off line component 102 Light adjustment component 1041

[0036] Cut-off line component lower part 1021 Light output integration component 105

[0037] Cut-off line component upper part 1022 DETAILED DESCRIPTION

[0038] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0039] Embodiment 1:

[0040] like Figures 1 to 4 As shown, the present embodiment provides a lens structure for forming zone III of a vehicle lamp module, comprising: a lens body 1, wherein a light source integration component 101 and a light output integration component 105 are respectively disposed at both ends of the lens body 1; a cutoff line component 102, a zone III light input component 103 and a zone III light output component 104 are disposed on the lens body 1 and are located between the light source integration component 101 and the light output integration component 105; light entering the lens body 1 through the light source integration component 101: part of the light passes through the cutoff line component 102 and then is emitted from the light output integration component 105, and part of the light passes through the zone III light input component 103 and the zone III light output component 104 in sequence and then is emitted from the light output integration component 105.

[0041] The light source integrated component 101 is a reflective cup structure. The surfaces of the zone III light incident component 103 and the zone III light emitting component 104 are provided with optical leather grains.

[0042] The cut-off line component 102 includes a cut-off line component lower part 1021 and a cut-off line component upper part 1022; the cut-off line component lower part 1021, the zone III light incident component 103, the cut-off line component upper part 1022 and the zone III light emitting component 104 are sequentially connected and arranged along the light emitting direction. The cut-off line component lower part 1021, the zone III light incident component 103 are connected and the cut-off line component upper part 1022 is arranged in a step shape. The symmetry axis of the light source integration component 101 is arranged horizontally or tilted relative to the cut-off line component lower part 1021.

[0043] The light emitting component 104 of zone III is provided with a light adjusting component 1041, which is used to adjust the light to meet the requirements of corresponding regulations. The light adjusting component 1041 is any one of the following: a pit structure, a convex dot structure, and a pattern structure. The light emitting component 104 of zone III is a plane structure or a curved surface structure.

[0044] Different regulations point light adjustment components 1041 position adjustment, GB-25991 for LED headlights Figure 8 The regulatory values ​​for Zone III shown in the figure require that for LED headlamps, the illuminance limits of test points 1 to 8 on the light distribution screen should comply with the following provisions:

[0045] Test point 1+2+3 ≥ 0.3lx;

[0046] Test point 4+5+6≥0.6lx;

[0047] 0.7lx≥test point 7≥0.1lx;

[0048] 0.7lx≥test point 8≥0.2lx.

[0049] Due to the distance between the regulatory points, when the designed Zone III light cannot cover all regulatory points or some specific regulatory points cannot meet the regulatory requirements, the regulatory values ​​of these specific points can be adjusted secondary, that is, a microstructure of a light adjustment component 1041 is added to the surface 104 to meet the regulatory requirements.

[0050] The microstructure of the light adjustment component 1041 is as follows Figure 3 As shown in the enlarged figure in, the type of structure is not fixed. The structure used in this embodiment is a pit structure with an angle that deviates from the inclination angle of the light-emitting component 104 in zone III. All other structures that can adjust the angle of light are within the protection scope of the present invention. Its main purpose is to enhance the illuminance value at specific regulatory points, such as P7 and P8, which cannot be covered by the regulatory points inside the main light type of zone III, to meet the minimum regulatory requirements, or if the illuminance value of the regulatory points inside the main light type of zone III of P1-P6 is too high, the illuminance value of the corresponding regulatory measurement point can also be reduced through this structure to meet the regulatory upper limit requirements.

[0051] Parameterized relations, such as Fig. 9 As shown, the parameters of the light in zone III can be adjusted. The details are as follows:

[0052] Light source position A---------------Affects the light intensity and position of the three zones;

[0053] Small step surface position B-----------affects the light intensity and position of the three zones;

[0054] The height of the small step surface C-----------affects the light intensity in the three zones;

[0055] The slope of the small step surface D-----------affects the position of light in the three zones;

[0056] The slope of the large step surface E-----------affects the light intensity in the three zones;

[0057] This embodiment also provides a vehicle lamp, comprising the above-mentioned lens structure for forming region III of the vehicle lamp module.

[0058] Embodiment 2:

[0059] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0060] This embodiment provides a design structure of the regulations for zone III of a headlight module, which utilizes the characteristic of a transmissive material that can transmit light, and by setting a corresponding optical structure, deviates part of the light from the main light path and transmits it above the cutoff line to form zone III of the headlight.

[0061] This embodiment provides a design structure of a vehicle lamp module according to Zone III regulations, which includes a light source incident part, a cutoff line part and a light emitting part.

[0062] The main function of the light source integration component 101 is to integrate the energy incident to the light source component system so that the incident light is incident to the low beam cutoff line area at a certain angle. The light source integration component 101 includes but is not limited to a reflective cup structure, which integrates the incident light source light with a divergent angle into a light with a narrow divergent angle. By adjusting the position and shape of the light source integration component, the symmetry axis of the light source integration component can be horizontal or tilted relative to the horizontal part of the cutoff line component 102, and the light emitted by the light source integration component 101 is mainly divided into two parts, namely the main light part and the zone III light part.

[0063] The cut-off line part is mainly a cut-off line structure with a step shape, which mainly includes the horizontal part of the cut-off line component 102 and the zone III light-emitting component 104. The horizontal cut-off line part is divided into upper and lower parts by the zone III light-entering component 103. The upper part 1022 of the cut-off line component in the upper part is mainly the area for total reflection of the main light. The main light is totally reflected by the upper part 1022 of the cut-off line component to form a low-beam main light type, and the zone III light is incident through the zone III light-entering component 103. The position of the light incident on the zone III light-emitting component 104 can be adjusted by the inclination angle of the zone III light-entering component 103. The number of incident light rays, that is, the intensity of the light finally projected on zone III, can be adjusted by the height of the zone III light-entering component 103.

[0064] The light projected on the light-emitting component 104 in zone III can be adjusted for a second time by adjusting the surface shape at that location. The surface shape can be, for example, a plane or a curved surface. At the same time, for specific regulatory points in zone III, such as point P8, etc., a microstructure can be arranged on the light-emitting component 104. The microstructure can be, for example: a. a pit structure; b. a convex point structure; c. various types of patterns such as columnar patterns. The specific regulatory points in zone III form a light adjustment component 1041, which can adjust the light emitted from the specific regulatory point to meet regulatory requirements. In addition, according to the light results in zone III, corresponding optical leather grains can be set on the surfaces of the light-entering component 103 in zone III and the light-emitting component 104 in zone III to meet the requirements of uniformity and diffusion angle.

[0065] The light output integration component includes a light output integration component 105, which mainly integrates the main light type light and cooperates with other optical elements such as an optical lens to finally form the required low beam light type.

[0066] At present, the design of Zone III of the headlight module mostly adopts the setting of corresponding microstructures on the inside and outside of the optical lens to meet regulatory requirements. Under this scheme, there will be multiple small convex points arranged on the surface of the lens. This shape will affect the appearance of the modeling surface and has certain limitations in appearance design. The scheme of this embodiment utilizes the characteristics of the transmissive material that can transmit light and utilizes the relevant optical structure to design the Zone III structure inside the module optical part, which will not affect the overall appearance of the module and meet the customer's requirements for a neat appearance.

[0067] In the traditional III zone design method, the light required by the III zone is deflected to the III zone through the microstructure of the outer lens to meet the regulatory requirements. The light of this solution comes from the main light type, so it will affect the integrity and uniformity of the original main light type. The three-zone light of the solution of this embodiment does not come from the main light type area, but is formed by projecting the light source integration component to the III zone light emitting component. The III zone light is independent of the main light type light, and will not affect the integrity and uniformity of the main light type under this design.

[0068] The present invention utilizes the characteristic of the transmission material that can transmit light, and by setting a corresponding optical structure, a part of the light is deviated from the main light path and transmitted above the cut-off line to form the lamp zone III.

[0069] Based on light sources with multiple optical functions, multiple module units can be configured to produce multiple light distributions. The types of the multiple light distributions are different, and each light distribution type is any one of the following: low beam lighting, high beam lighting, adaptive low beam lighting, ADB high beam lighting, corner fog lamp lighting, urban road mode lighting, country road mode lighting, highway mode lighting, bend mode lighting, rain and fog mode lighting, position signal lights, turn signal lights, daytime running lights, welcome lights, ambient lights and other types.

[0070] At the same time, in this embodiment, the light source can also be set as a SMD LED, which is integrated on a PCBA or a heat sink and connected to the PCB board through a metal wire. In other embodiments, other light source types can be selected according to actual needs.

[0071] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0072] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A lens structure for forming zone III of a vehicle lamp module, characterized in that: include: A lens body (1), wherein two ends of the lens body (1) are respectively provided with a light source integration component (101) and a light output integration component (105); The lens body (1) is provided with a cut-off line component (102) located between the light source integration component (101) and the light output integration component (105), a zone III light input component (103) and a zone III light output component (104); Light rays entering the lens body (1) through the light source integration component (101): part of the light rays pass through the cut-off line component (102) and then exit from the light output integration component (105); part of the light rays pass through the zone III light input component (103) and the zone III light output component (104) in sequence and then exit from the light output integration component (105).

2. The lens structure for forming zone III of the vehicle lamp module according to claim 1, characterized in that: The cut-off line component (102) comprises a cut-off line component lower part (1021) and a cut-off line component upper part (1022); The lower part (1021) of the cut-off line component, the zone III light incident component (103), the upper part (1022) of the cut-off line component and the zone III light emitting component (104) are sequentially connected and arranged along the light emitting direction.

3. The lens structure for forming zone III of the vehicle lamp module according to claim 2, characterized in that: The lower part (1021) of the cut-off line component and the zone III light incident component (103) are connected, and the upper part (1022) of the cut-off line component is arranged in a step shape.

4. The lens structure for forming zone III of the vehicle lamp module according to claim 2, characterized in that: The symmetry axis of the light source integration component (101) is arranged horizontally or tilted relative to the lower portion (1021) of the cut-off line component.

5. The lens structure for forming zone III of a vehicle lamp module according to claim 1, characterized in that: The zone III light emitting component (104) is provided with a light adjusting component (1041), and the light adjusting component (1041) is used to adjust the light so that it meets the requirements of corresponding regulations.

6. The lens structure for forming zone III of the vehicle lamp module according to claim 5, characterized in that: The light adjustment component (1041) is any one of the following: a concave pit structure, a convex dot structure, and a pattern structure.

7. The lens structure for forming zone III of a vehicle lamp module according to claim 1, characterized in that: The zone III light emitting component (104) is a planar structure or a curved structure.

8. The lens structure for forming zone III of a vehicle lamp module according to claim 1, characterized in that: The light source integrated component (101) is a reflective cup structure.

9. The lens structure for forming zone III of a vehicle lamp module according to claim 1, characterized in that: Optical leather grains are provided on the surfaces of the zone III light incident component (103) and the zone III light emitting component (104).

10. A vehicle lamp, characterized in that: The lens structure for forming zone III of the vehicle lamp module comprises the lens structure as described in any one of claims 1 to 9.

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