An optical system for a dual-beam ADB module

Abstract

This invention proposes an optical system for a dual-beam ADB module. The system includes: a near beam unit: multiple single-chip LEDs matched with a condenser assembly, a primary focusing structure, and a secondary adjustment structure with adjustable reflective and emission surfaces to achieve 90° beam turning and uniformity control; an ADB unit: multiple independent and controllable LEDs guided to a beam splitter by a reflection modulation assembly; a beam splitting element: a surface-integrated cutoff line that transmits near beam and reflects the ADB beam to an outer lens, highly integrated, combining near beam and ADB functions in a single module; the beam splitter integrates cutoff line generation and beam splitting, reducing the number of components, and the secondary adjustment structure's curved surface provides coordinated control, resulting in good near beam uniformity; the near beam and ADB light sources are arranged perpendicularly at 90°, and the heat sink can be radially expanded, increasing the heat dissipation area and improving heat dissipation performance.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting module technology, and more specifically, to an optical system for a dual-beam ADB module. Background Technology

[0002] With the development of intelligent vehicle lighting technology, the integration of adaptive high beam (ADB) and low beam has become a trend. Traditional solutions face three major bottlenecks:

[0003] Split module: The low beam and ADB occupy separate space, resulting in an excessively large lamp size;

[0004] Limitations of the ellipsoidal scheme: a single ellipsoid needs to be matched with multiple LED chips, resulting in high heat density and rapid luminous efficacy decay;

[0005] Co-directional optical path design: LED and ADB modulator are connected in series, the module length exceeds the limit, the heat sink is forced to extend axially, and the weight increases.

[0006] For example, WO2023019640A1 discloses an ADB (Advanced Headlight and Low Beam) integrated vehicle lighting module, including a low beam primary optical unit, a high beam primary optical unit, a light shield, and a collimating optical element. The low beam primary optical unit includes a low beam light source and a low beam focusing element. The low beam focusing element is adapted to collect the light emitted by the low beam light source and form a low beam light distribution in the focal area of ​​the collimating optical element. The high beam primary optical unit includes multiple high beam light sources, a high beam focusing element, and a dual-focus optical element. The high beam focusing element is adapted to collect the light emitted by the multiple high beam light sources and illuminate the first focal area of ​​the dual-focus optical element. The second focal point of the dual-focus optical element is located in the focal area of ​​the collimating optical element. A cutoff line structure is provided on one side of the light shield, and the cutoff line structure is located in the focal area of ​​the collimating optical element.

[0007] However, the fundamental flaw of the WO2023019640A1 patent lies in its optical architecture: the coaxial optical path design makes heat dissipation and size incompatible; the reliance on dual-focus elements leads to light efficiency loss and increased costs.

[0008] Therefore, a new dual-beam ADB module is needed to solve the problems of large space occupation, difficult heat dissipation, inability to control light uniformity, and excessive module length in the existing technology. Utility Model Content

[0009] In view of this, in order to solve the above problems, this utility model proposes an optical system for a dual-beam ADB module. The system includes: a near beam unit: multiple single-chip LEDs 2 matched with a condenser assembly 1, a primary condenser structure 1a, and a secondary adjustment structure 1b with an adjustable reflective surface 1b-1 and an exit surface 1b-2, to achieve 90° beam turning and uniformity adjustment; an ADB unit: multiple independent and controllable LEDs 4 guided by a reflection modulation assembly 4 to a beam splitter 5; a beam splitting element 5: with an integrated cutoff line on its surface, transmitting near beam and reflecting the ADB beam to an outer lens 6, highly integrated, a single module integrates near beam and ADB functions, reducing space occupation; the beam splitter 5 integrates cutoff line generation and beam splitting, reducing the number of components, and the secondary adjustment structure 1b with curved surface coordinated control, resulting in good near beam uniformity; the near beam and ADB light sources are arranged perpendicularly at 90°, the heat sink can be radially extended, the heat dissipation area is increased, and the heat dissipation effect is good.

[0010] An optical system for a dual-beam ADB module, characterized in that it comprises:

[0011] The low beam unit includes multiple first light sources 2 arranged side by side and a condenser assembly 1 corresponding to each first light source 2;

[0012] The ADB unit includes multiple independently controllable second light sources 3 and a reflection modulation component 4;

[0013] Beam splitter 5, an optical surface with a cutoff line function;

[0014] Exit lens 6;

[0015] The optical path of the near beam unit is turned 90° by the condenser assembly 1 and then directed to the beam splitter 5. The optical path of the ADB unit is directed to the beam splitter 5 via the reflection modulation assembly 4. The beam splitter 5 transmits the transmitted near beam and / or the reflected ADB beam to the exit lens 6.

[0016] The concentrator assembly 1 includes:

[0017] Primary focusing structure 1a, used to reflect light from the light source;

[0018] The secondary adjustment structure 1b includes a reflective surface 1b-1 and an exit surface 1b-2. The reflective surface 1b-1 bends the light reflected by the primary focusing structure 1a by 90° and refracts it through the exit surface 1b-2 to the beam splitter element 5.

[0019] Furthermore, the primary focusing structure 1a has a bowl-shaped sidewall structure.

[0020] Furthermore, the secondary adjustment structure 1b satisfies:

[0021] The curvature of the reflecting surface 1b-1 is adjustable to control the reflection angle;

[0022] The curvature of the exit surface 1b-2 is adjustable to control the beam divergence.

[0023] Furthermore, the beam splitting element 5 is a beam splitter, and its functions include:

[0024] It transmits near-beam light and forms a bright / dark cutoff line;

[0025] Reflects the ADB beam to form a high beam pattern.

[0026] Furthermore, the optical axis angle between the low beam unit and the ADB unit is 90°, allowing their heat sinks to be arranged independently in mutually perpendicular directions.

[0027] Furthermore, the reflection modulation component 4 includes multiple independent reflection units, each of which corresponds to a second light source 3 for independently controlling the beam direction.

[0028] Furthermore, the near-beam optical path undergoes three optical folds:

[0029] First instance: Primary focusing structure 1a reflection;

[0030] Second: The 90° turn of the secondary regulating structure 1b;

[0031] Third time: The beam diverges after transmission through beam splitter element 5.

[0032] The system integrates low beam and ADB functions in a single module, wherein: the low beam pattern achieves uniform energy distribution through the secondary adjustment structure 1b; and the ADB pattern achieves dynamic obstacle avoidance by independently controlling the second light source 3.

[0033] Furthermore, both the first light source 2 and the second light source 3 are single-chip single LEDs.

[0034] The beneficial effects of this utility model are as follows: This utility model proposes an optical system for a dual-beam ADB module. The system includes: a near beam unit: multiple single-chip LEDs 2 matched with a condenser assembly 1, a primary condenser structure 1a, and a secondary adjustment structure 1b consisting of an adjustable reflective surface 1b-1 and an exit surface 1b-2, to achieve 90° beam turning and uniformity adjustment; an ADB unit: multiple independently controllable LEDs 4 guided by a reflection modulation assembly 4 to a beam splitter 5; a beam splitting element 5: with an integrated cutoff line on its surface, transmitting near beam and reflecting the ADB beam to an outer lens 6, highly integrated, a single module integrates near beam and ADB functions, reducing space occupation; the beam splitter 5 integrates cutoff line generation and beam splitting, reducing the number of components, and the secondary adjustment structure 1b with curved surface coordinated control, resulting in good near beam uniformity; the near beam and ADB light sources are arranged perpendicularly at 90°, the heat sink can be radially expanded, the heat dissipation area is increased, and the heat dissipation effect is good. Attached Figure Description

[0035] Figure 1 This is a ray diagram of the concentrator component of the optical system of the dual-beam ADB module of this utility model.

[0036] Figure 2 This is an overall system diagram of the optical system of the dual-beam ADB module of this utility model.

[0037] Figure 3 This is a schematic diagram of the near-beam optical path of the optical system of the dual-beam ADB module of this utility model.

[0038] Figure 4 This is a schematic diagram of the ADB beam path of the optical system of the dual-beam ADB module of this utility model.

[0039] Figure 5 This is a three-dimensional structural diagram of the near-beam system of the optical system of the dual-beam ADB module of this utility model.

[0040] Figure 6 This is a three-dimensional structural diagram of the ADB system of the optical system of the dual-beam ADB module of this utility model.

[0041] Figure 7 This is a screen illuminance diagram of the near-beam illumination area of ​​the optical system of the dual-beam ADB module of this utility model.

[0042] Figure 8 This is a screen illuminance diagram of the ADB light illumination area of ​​the optical system of the dual-beam ADB module of this utility model.

[0043] Explanation of main component symbols

[0044] Concentrator assembly 1, primary focusing structure 1a, secondary adjustment structure 1b, reflective surface 1b-1, exit surface 1b-2, first light source 2, second light source 3, reflection modulation assembly 4, beam splitting element 5, exit lens 6.

[0045] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0046] The following embodiments are described to aid in understanding this application. These embodiments are not, and should not be, construed in any way as limiting the scope of protection of this application.

[0047] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as individual functional units (which may include subunits), but those skilled in the art will recognize that various components or portions thereof may be divided into individual components or may be integrated together (including integrated within a single system or component).

[0048] Furthermore, the connection between components or systems is not intended to be limited to a direct connection; on the contrary, data between these components may be modified, reformatted, or otherwise altered by intermediate components. Additionally, other or fewer connections may be used. It should also be noted that the terms "connection," "link," or "input" should be understood to include direct connections, indirect connections via one or more intermediate devices, and wireless connections. Example 1:

[0049] like Figure 1 The image shown is a ray diagram of the concentrator assembly of the optical system of the dual-beam ADB module of this invention; as shown... Figure 2 The diagram shown is an overall system diagram of the optical system of the dual-beam ADB module of this invention; as shown... Figure 3 The diagram shown is a schematic of the near-beam optical path of the optical system of the dual-beam ADB module of this invention; as shown... Figure 4 The diagram shown is a schematic of the ADB beam path of the optical system of the dual-beam ADB module of this invention; as shown... Figure 5 The diagram shown is a three-dimensional structural diagram of the near-beam system of the dual-beam ADB module of this invention; as shown... Figure 6 The diagram shown is a three-dimensional structural diagram of the ADB system of the dual-beam ADB module of this invention; as shown... Figure 7 The image shown is a screen illuminance diagram of the near-beam illumination area of ​​the optical system of the dual-beam ADB module of this invention; as shown... Figure 8 The image shows the screen illuminance diagram of the ADB light illumination area of ​​the optical system of the dual-beam ADB module of this invention.

[0050] An optical system for a dual-beam ADB module, characterized in that it comprises:

[0051] The low beam unit includes multiple first light sources 2 arranged side by side and a condenser assembly 1 corresponding to each first light source 2;

[0052] The ADB unit includes multiple independently controllable second light sources 3 and a reflection modulation component 4;

[0053] Beam splitter 5, an optical surface with a cutoff line function;

[0054] Exit lens 6;

[0055] In this design, the optical path of the low beam unit is deflected by 90° by the condenser assembly 1 and then directed to the beam splitter element 5. The optical path of the ADB unit is directed to the beam splitter element 5 via the reflection modulation assembly 4. The beam splitter element 5 transmits the transmitted low beam and / or the reflected ADB beam to the exit lens 6. This single module integrates low beam and ADB functions, which, compared to a split module, reduces space occupation, lowers costs, and saves size. Compared to the ellipsoidal design, it incorporates more condensers and uses multiple first light sources 2 to achieve low beam, resulting in stronger performance and better heat dissipation. The condenser assembly 1 includes: a primary condensing structure 1a; a secondary adjustment structure 1b for reflecting the light from the light source, comprising a reflective surface 1b-1 and an exit surface 1b-2. The reflective surface 1b-1 deflects the light reflected by the primary condensing structure 1a by 90° and refracts it through the exit surface 1b-2 to the beam splitter element 5. The forced 90° deflection of the reflective surface overcomes the heat dissipation limitation of the same-direction optical path and reduces axial dimensions. The exit surface further adjusts the light pattern, improving the uniformity of the low beam.

[0056] The primary focusing structure 1a has a bowl-shaped sidewall structure, which achieves a light capture rate of >85% and reduces light loss.

[0057] The secondary adjustment structure 1b satisfies:

[0058] The curvature of the reflecting surface 1b-1 is adjustable to control the reflection angle;

[0059] The curvature of the exit surface 1b-2 is adjustable to control the beam divergence;

[0060] Dynamically adapts to the light pattern requirements of different vehicle models (such as European / American standard cut-off lines), eliminating the need for mold modifications; curvature coordination and control eliminate stray light and reduce the risk of glare.

[0061] The beam splitting element 5 is a beam splitter, whose functions include: transmitting near beams and forming a bright and dark cutoff line; reflecting ADB beams to form a high beam pattern; and the cutoff line is directly formed on the beam splitter to avoid secondary optical distortion.

[0062] The optical axis angle between the low beam unit and the ADB unit is 90°, which allows the heat sinks of the two units to be arranged independently along mutually perpendicular directions. The heat sinks can be arranged independently along the X / Y axis, increasing the heat dissipation area; eliminating heat source superposition, and reducing the LED junction temperature.

[0063] The reflection modulation component 4 includes multiple independent reflection units, each of which corresponds to a second light source 3 for independently controlling the beam direction and achieving pixel-level ADB obstacle avoidance accuracy; the reflection units are independently calibrated to avoid the LED position tolerance affecting the light pattern.

[0064] Near beam optical path undergoes three optical folds:

[0065] First instance: Primary focusing structure 1a reflection;

[0066] Second: The 90° turn of the secondary regulating structure 1b;

[0067] Third time: The beam diverges after transmission through beam splitter element 5.

[0068] The system integrates low beam and ADB (Adaptive Dodge and Avoidance) functions within a single module. The low beam pattern achieves uniform energy distribution through a secondary adjustment structure 1b; the ADB pattern achieves dynamic obstacle avoidance by independently controlling the second light source 3, thus shortening the overall module length. The compressed optical path frees up space, supporting multi-LED array layouts. Both the first light source 2 and the second light source 3 are single-chip, single-LED units, which are easier to control and offer better performance and heat dissipation compared to single-chip multiple LED units.

[0069] The beneficial effects of this utility model are as follows: This utility model proposes an optical system for a dual-beam ADB module. The system includes: a near beam unit: multiple single-chip LEDs 2 matched with a condenser assembly 1, a primary condenser structure 1a, and a secondary adjustment structure 1b consisting of an adjustable reflective surface 1b-1 and an exit surface 1b-2, to achieve 90° beam turning and uniformity adjustment; an ADB unit: multiple independently controllable LEDs 4 guided by a reflection modulation assembly 4 to a beam splitter 5; a beam splitting element 5: with an integrated cutoff line on its surface, transmitting near beam and reflecting the ADB beam to an outer lens 6, highly integrated, a single module integrates near beam and ADB functions, reducing space occupation; the beam splitter 5 integrates cutoff line generation and beam splitting, reducing the number of components, and the secondary adjustment structure 1b with curved surface coordinated control, resulting in good near beam uniformity; the near beam and ADB light sources are arranged perpendicularly at 90°, the heat sink can be radially expanded, the heat dissipation area is increased, and the heat dissipation effect is good.

[0070] Although this application discloses several aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art. Various modifications and improvements can be made without departing from the concept of this application, and these all fall within the scope of protection of this application. The various aspects and embodiments disclosed in this application are for illustrative purposes only and are not intended to limit this application. The actual scope of protection of this application is determined by the claims.

Claims

1. An optical system for a dual-beam ADB module, characterized in that, include: The low beam unit includes multiple first light sources (2) arranged side by side and a condenser assembly (1) corresponding to each first light source (2). The ADB unit includes multiple independently controllable second light sources (3) and a reflection modulation component (4). Beam splitter (5), an optical surface with a cutoff line function; Outgoing lens (6); The optical path of the near beam unit is turned 90° by the condenser assembly (1) and then directed to the beam splitter (5). The optical path of the ADB unit is directed to the beam splitter (5) through the reflection modulation assembly (4). The beam splitter (5) directs the transmitted near beam and / or reflected ADB beam to the outgoing lens (6). The concentrator assembly (1) includes: Primary light-concentrating structure (1a) is used to reflect light from the light source; The secondary adjustment structure (1b) includes a reflective surface (1b-1) and an exit surface (1b-2). The reflective surface (1b-1) bends the light from the primary focusing structure (1a) by 90° and refracts it through the exit surface (1b-2) to the beam splitter (5).

2. The system as described in claim 1, characterized in that: The secondary adjustment structure (1b) satisfies: The curvature of the reflecting surface (1b-1) is adjustable to control the reflection angle; The curvature of the exit surface (1b-2) is adjustable to control the beam divergence.

3. The system as described in claim 1, characterized in that: The beam splitting element (5) is a beam splitter, whose functions include: transmitting the near beam and forming a cutoff line between light and dark; reflecting the ADB beam to form a high beam pattern.

4. The system as described in claim 1, characterized in that: The optical axis angle between the low beam unit and the ADB unit is 90°, allowing their heat sinks to be arranged independently in mutually perpendicular directions.

5. The system as described in claim 1, characterized in that: The reflection modulation component (4) includes multiple independent reflection units, each of which corresponds to a second light source (3) for independently controlling the beam direction.

6. The system as described in claim 1, characterized in that: Both the first light source (2) and the second light source (3) are single-chip single LEDs.

7. The system as described in claim 1, characterized in that: Near-beam light undergoes three optical folds: First: Reflection from the primary focusing structure (1a); Second: Secondary adjustment structure (1b) 90° turn; Third time: the beam diverges after transmission through the beam splitting element (5).

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