Low-beam primary optical element, headlight module, headlight and vehicle

Abstract

The present invention relates to a vehicle lamp, and discloses a low-beam primary optical element, which comprises, from rear to front, a light-entering portion (101), a light-passing portion (102), and a light-emitting portion (103). The light-emitting portion (103) comprises a main light-emitting surface (1031) and a secondary light-emitting surface (1032) connected to the main light-emitting surface (1031). The secondary light-emitting surface (1032) is provided with a low-beam cutoff line structure (105). The secondary light-emitting surface (1032) is suitable for refracting light incident on the low-beam cutoff line structure (105) toward the front and upward. The present invention also discloses a vehicle lamp module, a vehicle lamp, and a vehicle comprising the low-beam primary optical element. The low-beam primary optical element of the present invention has a simple structure, can effectively improve the color of the low-beam light / darkness cutoff line, and weaken the dispersion phenomenon.

Description

Technical Field

[0001] The present invention relates to a vehicle lamp, and in particular to a low-beam primary optical element. In addition, the present invention also relates to a lamp module, a lamp and a vehicle comprising the low-beam primary optical element. Background Art

[0002] The lighting pattern of existing vehicles projected on the vertical light distribution screen 25m in front of the vehicle is divided into low beam lighting shape and high beam lighting shape. The low beam lighting shape is formed by the low beam module in the headlight module. The low beam module is usually equipped with low beam primary optical elements (such as reflectors, light guides) and secondary optical elements (such as lenses). The light emitted by the low beam light source is emitted through the low beam primary optical element and the secondary optical element in sequence to form the low beam lighting shape, and the light that reaches the low beam light-dark cut-off line structure at the lower edge of the low beam primary optical element will form the low beam light-dark cut-off line in the low beam lighting shape.

[0003] However, in the prior art, most of the light passing through the low beam cutoff line structure of the low beam primary optical element enters from the lower part of the secondary optical element (lens), and the low beam dark cutoff line formed after refraction by the secondary optical element is blue in color, with serious dispersion phenomenon, which will cause discomfort to the driver during driving.

[0004] Based on the above reasons, it is difficult for the existing technology to effectively ensure that the color of the low beam cutoff line of the low beam lighting light shape is ideal and the dispersion phenomenon is not serious. Summary of the Invention

[0005] The problem to be solved by the first aspect of the present invention is to provide a low-beam primary optical element, which has a simple structure, can effectively improve the color of the low-beam light cut-off line, and weaken the dispersion phenomenon.

[0006] In addition, the problem to be solved in the second aspect of the present invention is to provide a vehicle lamp module, the low beam primary optical element of which has a simple structure, can effectively improve the color of the low beam cut-off line, and weaken the dispersion phenomenon.

[0007] Furthermore, the problem to be solved in the third aspect of the present invention is to provide a vehicle lamp having a simple low beam primary optical element structure, which can effectively improve the color of the low beam cut-off line and weaken the dispersion phenomenon.

[0008] Furthermore, the problem to be solved in the fourth aspect of the present invention is to provide a vehicle whose low beam lighting light shape has an ideal color of the low beam light-dark cut-off line and has no obvious dispersion phenomenon.

[0009] In order to solve the above technical problems, the present invention provides a low beam primary optical element on one hand, which includes a light input part, a light passing part and a light output part from back to front, and the light output part includes a main light output surface and a secondary light output surface connected to the main light output surface, and a low beam cutoff line structure is provided on the secondary light output surface, and the secondary light output surface is suitable for refracting light incident on the low beam cutoff line structure forward and upward.

[0010] As a preferred embodiment, a transition surface is provided between the primary light emitting surface and the secondary light emitting surface, and the transition surface is suitable for smoothly connecting the primary light emitting surface and the secondary light emitting surface.

[0011] More preferably, the transition surface is an arc surface.

[0012] As another preferred embodiment, the lower surface of the light-transmitting portion and the secondary light-emitting surface intersect to form the low-beam cut-off line structure.

[0013] More preferably, the secondary light-emitting surface gradually tilts downward and rearward from top to bottom.

[0014] As a specific structural form, the light incident portion is a focusing cup structure, the light incident end of the focusing cup structure is a plane, or the rear part of the focusing cup structure is provided with a groove and the groove is provided with a curved surface protruding backward; or the light incident portion is a protrusion or cone structure protruding backward.

[0015] More specifically, the left and right sides of the light-passing portion are integrally connected with mounting portions.

[0016] As another specific structural form, an angle θ is formed between the primary light-emitting surface and the secondary light-emitting surface, and 100°≤θ<180°.

[0017] More specifically, the angle θ is set to be 120°≤θ<160°.

[0018] More specifically, the angle θ=150°.

[0019] A second aspect of the present invention provides a vehicle lamp module, which comprises, from back to front, a light source, a low beam primary optical element according to any one of the above technical solutions, and a secondary optical element, the light source being arranged in one-to-one correspondence with the light entrance portion, the optical axis of the light entrance portion of the low beam primary optical element and the optical axis of the secondary optical element forming an angle γ, and the low beam primary optical element gradually tilts forward and downward from back to front along the optical axis of the light entrance portion.

[0020] As a specific implementation manner, the angle γ is ≥5°.

[0021] More specifically, the angle γ is ≥ 15°.

[0022] More specifically, the angle γ=20°.

[0023] As another specific implementation, the low-beam cut-off line structure is arranged within a region of 2 mm above and below the optical axis of the secondary optical element.

[0024] A third aspect of the present invention provides a vehicle lamp, comprising a vehicle lamp module according to any one of the above technical solutions.

[0025] A fourth aspect of the present invention provides a vehicle, comprising the vehicle light module according to the above technical solution.

[0026] Through the above technical solution, the low-beam primary optical element of the present invention includes, from back to front, a light input portion, a light-passing portion, and a light output portion. The light output portion includes a primary light output surface and a secondary light output surface connected to the primary light output surface. The secondary light output surface is provided with a low-beam cutoff structure, and the secondary light output surface is adapted to refract light incident on the low-beam cutoff structure forward and upward. The light output portion of the low-beam primary optical element of the present invention includes a primary light output surface and a secondary light output surface, and the low-beam cutoff structure is provided on the secondary light output surface. The secondary light output surface is used to deflect light incident on the low-beam cutoff structure upward and then inject it into the secondary optical element, thereby minimizing light from being emitted from the lower half of the secondary optical element. This improves the color of the low-beam light / dark cutoff line, weakens the dispersion phenomenon, and thus can enhance the driver's visual experience.

[0027] Other advantages of the present invention and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 1 is a schematic structural diagram of a specific embodiment of a low-beam primary optical element in the prior art;

[0029] Figure 2 This is a light path diagram of a conventional headlight module;

[0030] Figure 3 It is a simulated schematic diagram of the low beam light shape of the headlight;

[0031] Figure 4 This is one of the structural schematic diagrams of the low beam primary optical element according to a specific embodiment of the present invention;

[0032] Figure 5 This is the second structural diagram of the low beam primary optical element according to a specific embodiment of the present invention;

[0033] Figure 6 This is the third structural diagram of the low beam primary optical element according to a specific embodiment of the present invention;

[0034] Figure 7This is the fourth structural diagram of the low beam primary optical element according to a specific embodiment of the present invention;

[0035] Figure 8 yes Figure 7 A partial enlarged schematic diagram of the A direction;

[0036] Figure 9 is a top view of a low beam primary optical element according to a specific embodiment of the present invention;

[0037] Figure 10 yes Figure 9 BB cross-section diagram;

[0038] Figure 11 yes Figure 10 A local enlarged schematic diagram in the C direction;

[0039] Figure 12 This is one of the structural diagrams of the vehicle light module according to a specific embodiment of the present invention;

[0040] Figure 13 This is a second structural diagram of a vehicle light module according to a specific embodiment of the present invention;

[0041] Figure 14 is a top view of a vehicle light module according to a specific embodiment of the present invention;

[0042] Figure 15 yes Figure 14 DD profile;

[0043] Figure 16 1 is a light path diagram of a vehicle light module according to a specific embodiment of the present invention.

[0044] Description of Reference Numerals

[0045] 1 Low beam primary optical element 101 light entrance portion

[0046] 102 light-transmitting portion 1021 lower surface

[0047] 103 light emitting part 1031 main light emitting surface

[0048] 1032 light emitting surface 1033 transition surface

[0049] 104 mounting portion 105 low beam cut-off line structure

[0050] 2 Secondary optical element 3 Light-entry optical axis

[0051] 4 Secondary optical element optical axis 5 Main light output surface curved surface

[0052] 6th light-emitting surface curved surface 7th near-bright-dark cut-off line DETAILED DESCRIPTION

[0053] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the scope of protection of the present invention is not limited to the specific embodiments described below.

[0054] In the description of the present invention, it is necessary to explain that the directions or positional relationships indicated by the terms "front," "rear," "left," "right," "up," and "down" are based on the orientation or positional relationship indicated by the low-beam primary optical element or headlight module of the present invention after being installed on a vehicle, according to the vehicle's normal driving state. Specifically, the end where the secondary optical element 2 is located is the front, and the end where the light entrance portion 101 is located is the rear. With respect to the front-to-back direction, when viewed from the rear to the front, the left and right sides of the low-beam primary optical element 1 are the left-right direction, and the top and bottom sides of the low-beam primary optical element 1 are the top-to-bottom direction.

[0055] According to the definition in GB 4599-2007 - Filament Bulb Headlamps for Automobiles, the cut-off line is the dividing line where the light beam projected onto the light distribution screen experiences a significant change in brightness. In the description of the present invention, it should be noted that "low-beam cut-off line" is a common term in this field, representing the upper boundary of the low-beam illumination light pattern. The shape of the low-beam cut-off line 7 may vary according to the regulations of different countries. Figure 3 Shown is a shape of the near-bright-dark cut-off line 7.

[0056] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "mounted" and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0057] like Figures 4 to 11 As shown, on one hand, the present invention provides a low beam primary optical element, which includes a light input portion 101, a light passing portion 102 and a light output portion 103 from back to front, wherein the light output portion 103 includes a main light output surface 1031 and a secondary light output surface 1032 connected to the main light output surface 1031, and a low beam cutoff line structure 105 is provided on the secondary light output surface 1032, and the secondary light output surface 1032 is suitable for refracting light incident on the low beam cutoff line structure 105 forward and upward.

[0058] from Figure 1As can be seen from the figure, the light emitting portion 103 of the low-beam primary optical element 1 of the prior art is a continuous and smooth curved surface. A low-beam cutoff line structure 105 matching the shape of the low-beam cutoff line 7 is formed at the lower edge of the light emitting portion 103. The light is intercepted by the low-beam cutoff line structure 105 and then projected by the secondary optical element 2 to form a low-beam lighting light shape having the low-beam cutoff line 7. Figure 2 It can be seen that in the headlight module including the low-beam primary optical element 1 of the prior art, most of the light passing through the low-beam cut-off line structure 105 of the low-beam primary optical element 1 (i.e., the light within the dotted box in the figure) enters from the lower part of the secondary optical element 2, and forms the low-beam light-dark cut-off line 7 after being refracted by the secondary optical element 2. The color of the low-beam light-dark cut-off line 7 is bluish, and the dispersion phenomenon is relatively serious, which may cause discomfort to the driver during vehicle driving.

[0059] from Figure 5 As can be seen in the figure, the main light-emitting surface 1031 of the low-beam primary optical element of the present invention is set on the main light-emitting surface curved surface 5, and the secondary light-emitting surface 1032 is set on the secondary light-emitting surface curved surface 6. The main light-emitting surface curved surface 5 and the light-emitting surface curved surface 6 are not parallel, and a transition surface 1033 is formed at the intersection of the two, that is, a transition surface 1033 is formed between the main light-emitting surface 1031 and the secondary light-emitting surface 1032. The transition surface 1033 is preferably an arc surface, which can smoothly connect the main light-emitting surface 1031 and the secondary light-emitting surface 1032. After the light passes through the secondary light-emitting surface 1032 and the low-beam cut-off line structure 105 set on the secondary light-emitting surface 1032, the direction of the light will be as follows Figure 16 As shown, most of the light passing through the low beam cut-off line structure 105 (i.e., the light in the dotted box in the figure) can be deflected upward and enter the secondary optical element 2, so that the color of the formed low beam cut-off line 7 is white or yellow, the boundary color is improved, and the driver's visual experience is enhanced.

[0060] like Figure 4 and Figure 8 As shown, the lower surface 1021 of the light-passing portion 102 and the secondary light-emitting surface 1032 intersect to form the low-beam cut-off line structure 105 .

[0061] As a preferred structural form, the secondary light-emitting surface 1032 gradually tilts downward and rearward from top to bottom.

[0062] from Figure 11 As can be seen in FIG, the secondary light emitting surface 1032 gradually tilts downward and rearward from top to bottom, which can ensure that the light passing through the low-beam cut-off line structure 105 can enter the secondary optical element 2 tilted upward and frontward.

[0063] It should be noted here that the main light emitting surface 1031 is a curved surface that is concave backwards, and the secondary optical element 2 is preferably a lens, so that the main light emitting surface 1031 can be adapted to the focal plane of the lens to make the imaging of the car light clear.

[0064] As another preferred structural form, the light incident portion 101 is a focusing cup structure, the light incident end of the focusing cup structure is a plane, or the rear portion of the focusing cup structure is provided with a groove and a curved surface convex toward the rear is provided in the groove.

[0065] As another optional structural form of the above preferred structural form, the light incident portion 101 is a protrusion or cone structure protruding backward.

[0066] The light incident portion 101 of the present invention provides two preferred structural forms: a focusing cup structure and a rearwardly protruding protrusion or cone structure. Both structures function to focus and collimate light to improve light utilization. However, the light incident portion 101 of the present invention is not limited to these two structures and can also have other structures. Their function is to focus and collimate light and inject it into the light-passing portion 102. Therefore, other light incident structures that have the function of focusing light also fall within the scope of protection of the present invention.

[0067] Further preferably, the left and right sides of the light-passing portion 102 are integrally connected with mounting portions 104 for positioning and mounting the low-beam primary optical element 1 .

[0068] As a specific implementation manner, an angle θ is formed between the primary light emitting surface 1031 and the secondary light emitting surface 1032 , and 100°≤θ<180°.

[0069] Preferably, the angle θ is set to be 120°≤θ<160°.

[0070] More preferably, the angle θ=150°.

[0071] from Figure 11 As can be seen from the partially enlarged view, the secondary light-emitting surface 1032 is tilted rearward and downward relative to the primary light-emitting surface 1031. This configuration aims to tilt the light incident on the low-beam cutoff structure 105 forward and upward, and incident on the secondary optical element 2, minimizing the amount of light incident on the lower portion of the secondary optical element 2. This reduces chromatic aberration and improves the driver's visual experience. Here, the secondary light-emitting surface 1032 is tilted rearward and downward relative to the primary light-emitting surface 1031, forming an angle θ between the secondary light-emitting surface 1032 and the primary light-emitting surface 1031. Testing has shown that this angle θ is in the range of 100° ≤ θ < 180°, preferably 120° ≤ θ < 160°, and more preferably θ = 150°.

[0072] from Figures 12 to 16It can be seen that on the other hand, the present invention provides a headlight module, which includes, from back to front, a light source (not shown in the figure), a low beam primary optical element 1 and a secondary optical element 2 according to any one of the above technical solutions, the light source and the light entrance portion 101 are arranged in a one-to-one correspondence, and the light entrance portion optical axis 3 of the light entrance portion 101 and the secondary optical element optical axis 4 of the secondary optical element 2 form an angle γ, and the low beam primary optical element 1 gradually tilts from back to front toward forward and downward along the primary optical element optical axis 3.

[0073] It should be noted that the secondary optical element optical axis 4 is a virtual straight line extending along the front-to-back direction of the secondary optical element 2 and passing through the focal point of the secondary optical element 2. The light incident portion optical axis 3 is a virtual straight line extending along the front-to-back direction of the light incident portion 101 and passing through the focal point of the light incident portion 101.

[0074] from Figures 12 to 16 As can be seen from the figure, the vehicle lamp module of the present invention includes a light source, a low beam primary optical element 1 and a secondary optical element 2 from the back to the front, and the light source is arranged in a one-to-one correspondence with the light incident portion 101, and Figure 15 It can be seen that the optical axis 3 of the light incident part and the optical axis 4 of the secondary optical element form an included angle γ. At this time, the low-beam primary optical element 1 is tilted forward and downward, so that as much light as possible emitted from the secondary light-emitting surface 1032 can be deflected upward to the secondary optical element 2, and the light can be avoided from being emitted from the lower part of the secondary optical element 2 as much as possible.

[0075] As a specific structural form, the angle γ is ≥5°.

[0076] More specifically, the angle γ is ≥ 15°.

[0077] Furthermore, the angle γ=20°.

[0078] In this way, with the front-to-back direction of the focus of the secondary optical element 2 as a reference, the optical axis 3 of the light incident part and the optical axis 4 of the secondary optical element form an angle γ, and the angle γ is ≥5°, preferably the angle γ is ≥15°, and more preferably, the angle γ is 20°. The angle γ ensures that the position of the low beam primary optical element 1 is lower in the front and higher in the back in the up and down direction, and the low beam cut-off line structure 105 is set at the optical axis 4 of the secondary optical element.

[0079] As another specific structural form, according to light distribution requirements, the low beam cut-off line structure 105 is set within a region of 2 mm above and below the optical axis 4 of the secondary optical element.

[0080] A third aspect of the present invention further provides a vehicle lamp, comprising a vehicle lamp module according to any one of the above technical solutions.

[0081] A fourth aspect of the present invention further provides a vehicle, comprising the vehicle lamp according to the above technical solution.

[0082] As can be seen from the above description, the low beam primary optical element 1 of the present invention includes, from back to front, a light input portion 101, a light passing portion 102 and a light output portion 103, the light output portion 103 including a main light output surface 1031 and a secondary light output surface 1032 connected to the main light output surface 1031, the secondary light output surface 1032 is provided with a low beam cut-off line structure 105, and the secondary light output surface 1032 is suitable for refracting light incident on the low beam cut-off line structure 105 forward and upward. The light-emitting portion 103 of the low-beam primary optical element 1 of the present invention includes a main light-emitting surface 1031 and a secondary light-emitting surface 1032, and a low-beam cut-off line structure 105 is provided on the secondary light-emitting surface 1032. The secondary light-emitting surface 1032 is used to deflect light incident on the low-beam cut-off line structure 105 upward and then incident on the secondary optical element 2, thereby minimizing the light from being emitted from the lower half of the secondary optical element 2, thereby improving the color of the formed low-beam light / dark cut-off line 7, thereby weakening the dispersion phenomenon, and thus improving the driver's visual experience.

[0083] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0084] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0085] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A vehicle light module, characterized in that: The low-beam primary optical element (1) and the secondary optical element (2) are sequentially included from back to front. The low-beam primary optical element (1) comprises a light input portion (101), a light-through portion (102) and a light output portion (103) in sequence from back to front. The light output portion (103) comprises a main light output surface (1031) and a secondary light output surface (1032) connected to the main light output surface (1031). An angle is formed between the main light output surface (1031) and the secondary light output surface (1032). θ , and 100°≤ θ <180°, the lower surface (1021) of the light-transmitting portion (102) and the secondary light-emitting surface (1032) intersect to form the low-beam cut-off line structure (105), the secondary light-emitting surface (1032) is suitable for refracting the light incident on the low-beam cut-off line structure (105) forward and upward, the light source and the light-incoming portion (101) are arranged in a one-to-one correspondence, and the light-incoming portion optical axis (3) of the low-beam primary optical element (1) and the secondary optical element optical axis (4) form an angle γ , and the angle γ ≥ 5°, and the low beam primary optical element (1) is gradually inclined from back to front and downward along the optical axis (3) of the light incident portion.

2. The vehicle light module according to claim 1, characterized in that: A transition surface (1033) is provided between the main light-emitting surface (1031) and the secondary light-emitting surface (1032), and the transition surface (1033) is suitable for smoothly connecting the main light-emitting surface (1031) and the secondary light-emitting surface (1032).

3. The vehicle light module according to claim 2, characterized in that: The transition surface (1033) is an arc surface.

4. The vehicle light module according to claim 1, characterized in that: The secondary light-emitting surface (1032) gradually tilts downward and rearward from top to bottom.

5. The vehicle light module according to claim 1, characterized in that: The light entrance portion (101) is a light collecting cup structure, the light entrance end of the light collecting cup structure is a plane, or the rear portion of the light collecting cup structure is provided with a groove, and a curved surface convex toward the rear is provided in the groove; or The light entrance portion (101) is a protrusion or cone structure protruding backward.

6. The vehicle light module according to claim 1, characterized in that: The left and right sides of the light-transmitting portion (102) are integrally connected with mounting portions (104).

7. The vehicle light module according to claim 1, characterized in that: The angle θ The value is 120°≤ θ <160°.

8. The vehicle lamp module according to claim 7, characterized in that: The angle θ =150°.

9. The vehicle lamp module according to claim 1, characterized in that: The angle γ ≥ 15°.

10. The vehicle light module according to claim 9, characterized in that: The angle γ = 20°.

11. The vehicle lamp module according to claim 1, characterized in that: The low-beam cut-off line structure (105) is arranged within a 2 mm area above and below the optical axis (4) of the secondary optical element.

12. A vehicle lamp, characterized in that: The vehicle light module comprises the vehicle light module according to any one of claims 1 to 11.

13. A vehicle, characterized in that: Comprising the vehicle lamp according to claim 12.

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