Automobile lamp high-definition projection module and automobile

Abstract

The invention relates to the technical field of automobile projection, and discloses an automobile lamp high-definition projection module and an automobile. The automobile lamp high-definition projection module comprises a light source device, a lens assembly, a refracting prism assembly and a reflecting mirror assembly; the light source device is fixed at the rear end of the lens assembly; the refracting prism assembly is arranged at the front end of the lens assembly, and the refracting prism assembly can rotate forwards and backwards in the axial direction; the reflecting mirror assembly is arranged at the upper end of the front part of the refracting prism assembly, the reflecting mirror assembly can turn over by 50 degrees up and down along the X direction by taking the Y-direction horizontal axis as the axis, and the reflecting mirror assembly can turn over by 20 degrees upwards from the horizontal plane and turn over by 30 degrees downwards from the horizontal plane; through the combination of the lens group, the refracting prism and the reflecting mirror, projection light and patterns can be projected to the distant ground or the near-front ground of the vehicle along with the linear motion of the vehicle, or the light is projected to the turning side of the vehicle along with the turning motion of the vehicle, the aperture of the reflection projection module is small, and the occupied vehicle space is small.

Description

Technical Field

[0001] This invention relates to the field of automotive projection technology, and more particularly to a high-definition projection module for automotive headlights and an automotive vehicle. Background Technology

[0002] With the development of automotive technology, the demand for vehicle lighting technology is increasing, requiring more functions beyond traditional lighting. Examples include the development of technologies such as ground symbol projection modules and adaptive high beam modules. These two types of modules are suitable for different operating conditions: adaptive high beam modules project lighting patterns as parallel light directly in front of the car, providing the driver with illumination from a greater distance while avoiding glare for pedestrians and other drivers; ground symbol projection modules project lighting patterns onto the ground in front of the car, primarily operating at low speeds and when the vehicle is stationary, providing pedestrians and other drivers with warning signals for vehicle turning and stopping, becoming a new channel for human / vehicle and vehicle / vehicle information interaction.

[0003] The two have different application scenarios and projection distances. The current solution is to adjust the projection by using a projection mold and a motor. However, since the entire module is adjusted and rotated, a large adjustment space is required for the lens aperture, which makes it impossible to project the image to the ideal range. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a high-definition projection module for automotive headlights and an automotive vehicle. Through a combination of a lens group, a refractive prism, and a reflector, the projected light and pattern can be projected onto the ground in the distance or near the vehicle as the vehicle moves in a straight line, or the light can be projected onto the turning side of the vehicle as it turns. Furthermore, the aperture of the reflective projection module is small, thus occupying minimal space in the vehicle.

[0005] This invention proposes a high-definition projection module for automotive headlights, comprising a light source device, a lens assembly, a refractive prism assembly, and a reflector assembly;

[0006] The light source is fixed to the rear of the lens assembly. The light source provides transmitted light and forms a projected light spot pattern according to the needs of the scene. The lens assembly projects the light or pattern forward by collimating and focusing.

[0007] The refractive prism assembly is located at the front end of the lens assembly and can rotate in both directions along the axis. By rotating the refractive prism in both directions, the direction of the light rays or patterns emitted from the lens assembly is changed. When the vehicle is turning, the refractive prism can automatically rotate to direct the emitted light rays toward the turning side of the vehicle. When parking on the side at night, the refractive prism can be manually rotated in both directions to direct the emitted light rays toward the ground on the left and right sides near the front of the vehicle, allowing the driver to see the ground conditions on the left and right sides near the front of the vehicle and improving driving safety. When the refractive prism assembly rotates 180° from its initial position (the emitted light from the lens assembly changes from parallel light to oblique upward light), the emitted light rays from the lens assembly can be directly projected at a medium distance in front of the front of the vehicle when it is moving or projected at a medium distance in front of the front of the vehicle when it is stationary, forming a pattern of light spots.

[0008] The reflector assembly is positioned at the upper front of the refractive prism assembly. The reflector assembly can rotate 50° up and down along the X-axis (the front and rear direction of the vehicle) with the Y-axis (Y-axis is the left-right direction of the vehicle) as the horizontal axis. The reflector assembly can also rotate 20° upward from the horizontal plane and 30° downward from the horizontal plane. Because the refractive prism assembly is located behind the reflector assembly, the planar light rays of the lens assembly in the existing technology are changed to refracted light rays. Combined with the small 50° up and down rotation of the reflector assembly, since the reflector assembly only rotates within a small angle, the aperture of the projection module does not need to be very large. This allows the reflector to rotate 20° horizontally to project the light emitted from the front of the vehicle into a parallel high beam towards the distance of the front of the vehicle, or to rotate 50° horizontally to project the light emitted from the front of the vehicle into a low beam about one meter away from the front of the vehicle. This solves the problem that a large reflector rotation angle requires a correspondingly large aperture of the projection module, resulting in the device occupying a large amount of internal space in the front of the vehicle.

[0009] The refractive prism assembly includes a prism and at least one rotating motor. The circumferential sidewall of the prism is meshed with the output shaft of at least one rotating motor. The rotating motor drives the prism to rotate in either the forward or reverse direction, so that the angle of the light emitted from the prism can be changed so that it can be directed towards the reflector assembly at the upper front, or reflected towards the ground at a medium distance in front of the vehicle, or reflected towards the ground at close distance on both sides in front of the vehicle. This facilitates the driver's observation of the ground in front of the vehicle in the dark and improves the safe driving experience.

[0010] The overall side view structure of the prism is a right trapezoidal structure. The front face of the prism has an inclined surface from one side wall to the other side wall. The angle between the extension line of the inclined surface and the extension line of the rear plane of the prism is 10°-30°. Different prisms with different inclined surfaces are adapted to the needs of different distances of reflected light from vehicles illuminating the front left and right sides of the ground.

[0011] The reflector assembly includes a planar reflector and a horizontal rotation axis fixedly connected to the rear end of the planar reflector. The planar reflector can be rotated 50° up and down around the horizontal rotation axis to adjust the distance range of the light refracted by the prism from near beam to far beam. The far beam can achieve parallel long beam projection, and the near beam can achieve close beam projection at a distance of one meter directly in front of the vehicle.

[0012] The lens assembly includes a lens holder, a lens barrel mount, a first lens mount, a second lens mount, a light transmission transition ring, a lens limiting ring, a condenser lens, a shaping lens, and a protective lens. The lens holder is fitted and limited to the right end of the lens barrel mount. The light source device is located at the rear end of the lens barrel mount and is fixedly connected to the lens holder. The lens barrel mount is a cylindrical body with a three-stage annular stepped stop structure on its inner wall. The lens barrel mount allows the light source to shine upwards from the bottom, and houses three sets of lenses to coaxially adjust the scattered light from the light source into focused light. The first-stage annular stepped stop at the lower end of the lens barrel mount houses and limits the condenser lens. The condenser lens collects the scattered light emitted by the light source and converges it into a nearly parallel beam, providing efficient incident light for the subsequent optical system. It determines the basic focusing efficiency and beam direction of the system. The second-stage annular stepped stop in the middle of the lens barrel mount houses and limits the first lens mount. The first lens mount limits the displacement of the condenser lens and supports the shaping lens. The upper end of the first lens mount is limited and contacts the shaping lens. The shaping lens collimates the converging beam from the condenser lens, ensuring the light propagates more parallel to subsequent lenses, optimizing the beam pattern distribution, and providing a uniform incident light field for them. A light-transmitting transition ring is screwed into the secondary annular step stop at the upper end of the shaping lens, with its lower end face making limiting contact with the upper end face of the shaping lens. The function of the light-transmitting transition ring is to lock the condenser lens and shaping lens below, preventing them from loosening, compensating for manufacturing errors, ensuring overall optical axis coaxiality, and preventing… When moisture enters, the second lens mount is positioned within the three-stage annular step stop at the upper part of the lens barrel. Its function is to support the protective mirror above. The protective mirror is positioned at the upper end of the second lens mount and accommodated at the upper opening of the lens barrel. The side wall of the lens limiting ring is screwed into the outer side wall of the upper end of the lens barrel, and the annular limiting part at the upper end of the lens limiting ring is in contact with the outer edge of the upper end face of the protective mirror. The function of the protective mirror is to correct aberrations, improve the clarity and edge sharpness of the light pattern, and ensure the regularity of the near beam cutoff line.

[0013] The condensing lens is an ellipsoidal condensing lens; the shaping lens is a biconvex positive lens; and the protective lens is a plano-convex positive lens.

[0014] The lens holder, lens barrel seat, first lens seat, second lens seat, and lens limiting ring are made of die-cast aluminum or high-strength engineering plastic.

[0015] The light source device includes a circuit board and a matrix of LED beads soldered onto the circuit board. The LED beads can be individually lit under the control of the controller to form a light spot pattern of the desired shape to illuminate the ground in front. The light spot pattern can be a car logo, a directional arrow, or a warning sign. When the vehicle is stationary, the car logo displayed by the headlights can enhance the vehicle's quality and grade. The directional arrow can assist the driver in guiding the driving direction in conjunction with navigation while the vehicle is in motion. The warning sign can assist the driver in avoiding or braking obstacles detected by the vehicle's front sensors.

[0016] Both the refracting prism assembly and the reflecting mirror assembly are circumferentially fitted with sleeves of corresponding apertures to support the refracting prism assembly and the reflecting mirror assembly respectively. A horizontal rotation axis bearing protrudes and is connected to the upper inner side wall of the sleeve of the corresponding aperture. The plane reflecting mirror can be rotated up and down 50° within the sleeve with the horizontal rotation axis as the axis. The prism is embedded and fixed in the sleeve of the corresponding aperture. The rotating motor is engaged with the outer side wall of the sleeve. The sleeves of the refracting prism assembly and the sleeves of the reflecting mirror assembly are coaxially matched and connected.

[0017] An automobile includes a high-definition projection module for automotive headlights, which is mounted on the front of the automobile.

[0018] Beneficial effects

[0019] This invention uses a combination of lens group, refracting prism and reflector to project light and patterns onto the ground in the distance or in front of the vehicle as the car moves in a straight line, or to project light onto the turning side of the vehicle as the vehicle turns. The aperture of the reflective projection module is small and occupies little space in the vehicle. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] In the picture:

[0022] 1. Light source devices;

[0023] 11. Circuit board;

[0024] 12. LED beads;

[0025] 2. Lens assembly;

[0026] 21. Lens bracket;

[0027] 22. Lens tube holder;

[0028] 23. First lens mount;

[0029] 24. Second lens mount;

[0030] 25. Transmittance transition ring;

[0031] 26. Lens limiting ring;

[0032] 27. Condensing lens;

[0033] 28. Orthopedic lens;

[0034] 29. Protective mirror;

[0035] 3. Refracting prism assembly;

[0036] 31. Prism;

[0037] 311. Incline;

[0038] 32. Rotate the motor;

[0039] 4. Reflector assembly;

[0040] 41. Plane reflecting mirror;

[0041] 42. Horizontal rotation axis. Detailed Implementation

[0042] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0045] Example 1

[0046] See Figure 1 As shown, a high-definition projection module for automotive headlights includes a light source device 1, a lens assembly 2, a refractive prism assembly 3, and a reflector assembly 4.

[0047] The light source device 1 is fixed to the rear end of the lens assembly 2;

[0048] The refractive prism assembly 3 is located at the front end of the lens assembly 2, and the refractive prism assembly 3 can rotate in both directions along the axial direction;

[0049] The reflector assembly 4 is located at the upper front of the refractive prism assembly 3. The reflector assembly 4 can be rotated 50° up and down along the X-axis with the Y-axis as the axis. The reflector assembly 4 can be rotated 20° up from the horizontal plane and 30° down from the horizontal plane.

[0050] The refractive prism assembly 3 includes a prism 31 and two rotating motors 32. The circumferential sidewall of the prism 31 is meshed with the output shaft of the two rotating motors 32, and the rotating motors drive the prism to rotate in either the forward or reverse direction.

[0051] The prism 31 has a right-angled trapezoidal structure in its overall side view. The front end face of the prism 31 has an inclined surface 311 extending from one side wall to the other side wall. The angle between the extension line of the inclined surface of the prism 31 and the extension line of the rear end plane of the prism 31 is 10°-30°.

[0052] The reflector assembly 4 includes a planar reflector 41 and a horizontal rotation shaft 42 fixedly connected to the rear end of the planar reflector 41. The planar reflector 41 can be rotated up and down by 50° around the horizontal rotation shaft 42.

[0053] Lens assembly 2 includes a lens holder 21, a lens barrel base 22, a first lens base 23, a second lens base 24, a light transmission transition ring 25, a lens limiting ring 26, a condenser lens 27, a shaping lens 28, and a protective lens 29. The lens holder 21 is fitted and limited to the right end of the lens barrel base 22. The light source device 1 is disposed at the rear end of the lens barrel base 22 and fixedly connected to the lens holder 21. The lens barrel base 22 is a cylindrical body with a three-stage annular stepped stop structure on its inner wall. The condenser lens 27 is contained within the first-stage annular stepped stop at the lower end of the lens barrel base 22, and the second-stage annular stepped stop in the middle of the lens barrel base 22 contains a condenser lens 27. A first lens mount 23 has a shaping lens 28 that is limited and contacted at its upper end. A light-transmitting transition ring 25 is screwed into the second-level annular step stop at the upper end of the shaping lens 28, and the lower end face of the light-transmitting transition ring 25 is limited and contacted with the upper end face of the shaping lens 28. A second lens mount 24 is limited and seated in the third-level annular step stop at the upper part of the lens barrel mount 22. A protective mirror 29 is seated on the upper end of the second lens mount 24 and accommodated at the upper end opening of the lens barrel mount 22. The side wall of the lens limiting ring 26 is screwed into the outer side wall of the upper end of the lens barrel mount 22, and the annular limiting part at the upper end of the lens limiting ring 26 is limited and contacted with the circumferential outer edge of the upper end face of the protective mirror 29.

[0054] The condensing lens 27 is an ellipsoidal condensing lens; the shaping lens 28 is a biconvex positive lens; and the protective lens 29 is a plano-convex positive lens.

[0055] The lens support 21, lens barrel seat 22, first lens seat 23, second lens seat 24, and lens limiting ring 26 are made of die-cast aluminum or high-strength engineering plastic.

[0056] The light source device 1 includes a circuit board 11 and a matrix of LED beads 12 soldered onto the circuit board. The LED beads can be lit individually under the control of the controller to form a light spot pattern of the desired shape to illuminate the ground in front. The light spot pattern can be a car logo, a directional arrow, or a warning sign. When the vehicle is stopped, the car logo can enhance the quality and grade of the vehicle. The directional arrow can assist the driver in guiding the driving direction in conjunction with navigation while the vehicle is in motion. The warning sign can assist the driver in avoiding or braking obstacles detected by the front sensors of the vehicle.

[0057] Both the refracting prism assembly 3 and the reflecting mirror assembly 4 are fitted with sleeves of corresponding apertures in the circumferential direction, and the sleeves of the refracting prism assembly 3 and the reflecting mirror assembly 4 are coaxially matched and connected.

[0058] Example 2

[0059] An automobile includes a high-definition projection module for automotive headlights, which is mounted on the front of the automobile.

[0060] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A high-definition projection module for automotive headlights, characterized in that: It includes a light source device (1), a lens assembly (2), a refractive prism assembly (3), and a reflector assembly (4). The light source device (1) is fixed to the rear end of the lens assembly (2); The refractive prism assembly (3) is located at the front end of the lens assembly (2), and the refractive prism assembly (3) can rotate in both directions along the axial direction; The reflector assembly (4) is located at the upper front of the refracting prism assembly (3). The reflector assembly (4) can be rotated 50° up and down along the X direction with the Y-axis as the axis. The reflector assembly (4) can be rotated 20° up from the horizontal plane and 30° down from the horizontal plane.

2. The high-definition projection module for automotive headlights according to claim 1, characterized in that: The refractive prism assembly (3) includes a prism (31) and at least one rotating motor (32). The circumferential sidewall of the prism (31) is meshed with the output shaft of the at least one rotating motor (32). The rotating motor drives the prism to rotate in either the forward or reverse direction.

3. The high-definition projection module for automotive headlights according to claim 2, characterized in that: The prism (31) has a right trapezoidal structure in its overall side view. The front end face of the prism (31) has an inclined surface (311) from one side wall to the other side wall. The angle between the extension line of the inclined surface of the prism (31) and the extension line of the rear end plane of the prism (31) is 10°-30°.

4. A high-definition projection module for automotive headlights according to claim 3, characterized in that: The reflector assembly (4) includes a planar reflector (41) and a horizontal rotation axis (42) fixedly connected to the rear end of the planar reflector (41). The planar reflector (41) can be rotated up and down 50° with the horizontal rotation axis (42) as the axis.

5. A high-definition projection module for automotive headlights according to claim 4, characterized in that: The lens assembly (2) includes a lens bracket (21), a lens barrel seat (22), a first lens seat (23), a second lens seat (24), a light transmission transition ring (25), a lens limiting ring (26), a condenser lens (27), a shaping lens (28), and a protective lens (29). The lens bracket (21) is fitted onto the right end of the lens barrel seat (22), and the light source device (1) is located at the rear end of the lens barrel seat (22) and fixedly connected to the lens bracket (21). The lens barrel seat (22) is a cylindrical body, and the inner wall of the cylindrical body is a three-level annular step stop structure. The condenser lens (27) is limited and accommodated in the first-level annular step stop at the lower end of the lens barrel seat (22), and the second-level annular step stop in the middle of the lens barrel seat (22) is limited. A first lens holder (23) is provided, and a shaping lens (28) is limited to the upper end of the first lens holder (23). A light-transmitting transition ring (25) is screwed into the second-level annular step stop at the upper end of the shaping lens (28), and the lower end face of the light-transmitting transition ring (25) is limited to the upper end face of the shaping lens (28). A second lens holder (24) is limited to the upper part of the lens barrel holder (22) within the third-level annular step stop. A protective mirror (29) is seated at the upper end of the second lens holder (24) and is provided at the upper end opening of the lens barrel holder (22). The side wall of the lens limiting ring (26) is screwed into the upper outer wall of the lens barrel holder (22), and the annular limiting part at the upper end of the lens limiting ring (26) is limited to the circumferential outer edge of the upper end face of the protective mirror (29).

6. A high-definition projection module for automotive headlights according to claim 5, characterized in that: The condensing lens (27) is an ellipsoidal condensing lens; the shaping lens (28) is a biconvex positive lens; and the protective lens (29) is a planoconvex positive lens.

7. A high-definition projection module for automotive headlights according to claim 6, characterized in that: The lens holder (21), lens barrel seat (22), first lens seat (23), second lens seat (24) and lens limiting ring (26) are made of die-cast aluminum or high-strength engineering plastic.

8. A high-definition projection module for automotive headlights according to claim 7, characterized in that: The light source device (1) includes a circuit board (11) and a matrix of LED beads (12) soldered on the circuit board. The LED beads can be lit individually by the controller to form a light spot pattern of the desired shape to illuminate the ground in front.

9. A high-definition projection module for automotive headlights according to claim 8, characterized in that: Both the refracting prism assembly (3) and the reflecting mirror assembly (4) are fitted with sleeves of corresponding apertures in the circumferential direction. The sleeves of the refracting prism assembly (3) and the sleeves of the reflecting mirror assembly (4) are coaxially matched and connected.

10. A car, characterized in that: The invention includes a high-definition projection module for automotive headlights as described in any one of claims 1-9, wherein the high-definition projection module for automotive headlights is installed at the front end of the vehicle.

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