A vehicle headlamp module based on a microlens array

Abstract

The utility model discloses a kind of vehicle headlamp module based on microlens array, including the optical module of at least one optical axis direction and the direction of vehicle travel consistent, or including multiple optical modules, and wherein at least one optical axis direction of optical module is consistent with the direction of vehicle travel, there is deflection angle between at least one optical axis direction of optical module and the direction of vehicle travel;The optical module includes LED light source, condenser lens and microlens array, the microlens array includes light-in lens layer, light shape mask layer and light-out lens layer, the light shape mask layer is divided into light transmission area and light shielding area by light cutoff boundary line, and convex boundary line is equipped in light cutoff boundary line middle. The utility model utilizes multiple optical modules to be spliced into complete vehicle headlamp module, and the optical axis direction of optical module can be adjusted according to use requirement, meet the use requirement of different customers.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to a headlight module based on a microlens array. Background Technology

[0002] Currently, most automotive headlights utilize MLA (Multi-Layer Lens) technology, employing precision microlens modules to achieve personalized designs and integrate with diverse scenarios. Existing MLA technology produces a low-beam cutoff line distribution in three segments, mostly with either a lower left or higher right angle. While this beam pattern meets basic lighting needs, a lower left-to-high angle might affect driving safety during normal driving and turning. Conversely, a higher left-to-high angle could obstruct the vision of oncoming drivers, increasing the risk of traffic accidents. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a vehicle headlight module based on a microlens array, which can increase the illumination range and allow for the configuration of different numbers of optical modules according to customer needs, thereby improving versatility.

[0004] Therefore, the technical solution of this utility model is: a headlight module based on a microlens array, including at least one optical module whose optical axis direction is consistent with the vehicle's direction of travel, or including multiple optical modules, wherein the optical axis direction of at least one optical module is consistent with the vehicle's direction of travel, and there is a deflection angle between the optical axis direction of at least one optical module and the vehicle's direction of travel; the optical module includes an LED light source, a focusing lens, and a microlens array, the microlens array includes an incident lens layer, a light-shaped mask layer, and an exit lens layer, the light-shaped mask layer is divided into a light-transmitting area and a light-blocking area by a light cutoff boundary line, a raised boundary line is provided in the middle of the light cutoff boundary line, and the vertical distance between the raised boundary line and the right boundary line is greater than the vertical distance between the raised boundary line and the left boundary line.

[0005] Based on the above scheme and as a preferred embodiment of the above scheme: the number of optical modules is 1 to 7, and each optical module can be arranged in a vertical strip, cross, rhombus or straight line.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the number of optical modules is 5 or 6, and at least 1 or 2 optical modules in the middle position have their optical axis direction consistent with the vehicle's direction of travel.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the optical module located at the outermost edge on one or both sides has its optical axis direction deflected toward its side, and the deflection angle α formed by it and the vehicle's direction of travel is in the range of 0~30°; that is, the optical module at the outermost edge on the left is deflected to the left by 0~30°, and / or the optical module at the outermost edge on the right is deflected to the right by 0~30°.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the optical modules located on the outermost edge on one or both sides and their adjacent optical modules, their respective optical axis directions are deflected toward their respective sides, and the deflection angle α of the optical module closer to the center is less than or equal to the deflection angle β of the optical module farther from the center, with α ranging from 0 to 30° and β ranging from 0 to 60°.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the angle of α is 2.5°, 3°, 5°, 6°, 8°, 10° or 15°, and the angle of β is 1 to 3 times that of α.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the optical mask layer is composed of multiple optical mask units, there is a vertical misalignment or counterclockwise rotation between adjacent optical mask units in the same row, and the light cutoff boundary lines between adjacent optical mask units are flush.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the light-transmitting area of ​​the light-shaped mask unit is provided with a light-shielding structure, and / or the light-shielding area is provided with a light-transmitting hole or a partial light-transmitting area, the size and shape of the light-transmitting hole being variable.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme: the light-incident lens layer includes a light-incident lens and a light-incident lens carrier, which are either separate structures or fixed as one unit; the light-exiting lens layer includes a light-exiting lens carrier, a light-shielding mask layer, and a light-exiting lens, which are either separate structures or fixed as one unit.

[0013] Based on the above scheme and as a preferred embodiment of the above scheme: the optical module further includes a module bracket, a condensing lens limiting component and a buckle fixing component, the LED light source is fixed behind the module bracket, the condensing lens and the microlens array are placed inside the module bracket, and the two ends are limited by the condensing lens limiting component and the buckle fixing component.

[0014] Compared with the prior art, the beneficial effects of this utility model are: Multiple optical modules are combined to form a complete headlight module. The optical axis orientation of the optical modules can be adjusted according to usage requirements. The optical axis of the middle optical module faces forward and has relatively high brightness, while the side optical modules can be rotated left and right to increase the illumination range, meeting the usage needs of different customers.

[0015] Multiple optical modules can move and rotate freely within the headlight, creating various patterns, horizontal lines, or vertical lines within the headlight space, making the headlights both aesthetically pleasing and practical.

[0016] The light-transmitting area and the light-blocking area are divided by the light cutoff boundary line in the light-shaped mask unit inside the microlens array. The light cutoff boundary line is raised in the middle and lower on both sides, which can obtain a low light distribution with a low middle and high sides. This type of headlight can avoid oncoming glare, protect the safety of oncoming vehicles, eliminate blind spots, ensure the driving safety of the vehicle, and reduce fatigue during long-term driving.

[0017] Adjacent light mask units in the same row can be moved up and down or rotated to align the light cutoff boundary lines on two adjacent light mask units, thereby avoiding light pattern gaps and ensuring the lighting effect. Attached Figure Description

[0018] Figure 1 Example 1 of the arrangement of the 5 optical modules of this utility model, (a) is a front view, (b) is a top view; Figure 2 Example 2 of the arrangement of the 5 optical modules of this utility model, (a) is a front view, (b) is a top view; Figure 3 Example 3 shows the arrangement of the five optical modules of this utility model. (a) is a front view and (b) is a top view. Figure 4 This is a top view of Example 4 of the arrangement of the five optical modules of this utility model; Figure 5 This is a top view of example five of the arrangement of the five optical modules of this utility model; Figure 6 This is a top view of Example Six of the Arrangement of Five Optical Modules of this Utility Model; Figure 7 This is a top view of Example 7 of the arrangement of the five optical modules of this utility model; Figure 8 The diagram shows the arrangement of the five optical modules of this utility model. (a) is a cross shape, and (b) is a vertical strip shape. Figure 9 This is an exploded view of the components of a single optical module of this utility model; Figure 10 This is an exploded view of the microlens array components of this utility model; Figure 11 This is a partial optical mask diagram of the microlens array of the present invention; Figure 12 This is a schematic diagram showing the vertical misalignment of adjacent optical mask layers in this invention. Figure 13This is a schematic diagram of the counterclockwise rotation of adjacent optical mask layers in this invention; Figure 14 This is a schematic diagram of the light cutoff boundary line of the optical mask layer of the present invention; Figure 15 This is a partial optical mask diagram of the microlens array of the present invention (with added local light-passing and local light-blocking structures). Figure 16 This is a schematic diagram of the first structure of the light-shielding mask layer of the present invention; Figure 17 This is a schematic diagram of the second structure of the light-shielding mask layer of the present invention; Figure 18 This is a schematic diagram of the first structure of the incident lens of the present invention; Figure 19 This is a schematic diagram of a second structure of the incident lens of the present invention; Figure 20 This is a schematic diagram of the third structure of the incident lens of the present invention; Figure 21 This is a schematic diagram of the fourth structure of the incident lens of the present invention; Figure 22 This is a schematic diagram of the first structure of the light-emitting lens of the present invention; Figure 23 This is a schematic diagram of a second structure of the light-emitting lens of the present invention; Figure 24 This is a light distribution diagram of the present invention, showing a lower center and higher sides.

[0019] The components in the diagram are labeled as follows: optical module 1, LED light source 10, circuit board 11, first positioning hole 12, second positioning hole 13, condenser lens 2, microlens array 3, incident lens 31, first hemispherical lens 311, cylindrical lens 312, second hemispherical lens 313, cylindrical surface 314, slender cylindrical lens 315, freeform surface lens one or spherical lens one 316, incident lens carrier 32, light-shaped mask layer 33, adhesive layer 34, light-emitting lens carrier 35, light-shielding mask layer 36, light-emitting lens 37, freeform surface lens two or spherical lens two 371, light-transmitting hole 41, first light-shielding structure 42, second light-shielding structure 43, local light-transmitting area 44, module bracket 5, stepped surface 51, locking block 52, condenser lens limiting component 6, buckle fixing component 7, buckle 71, heat sink 8, heat dissipation part 81, mounting surface 82, second positioning pin 83; The light-transmitting area S1, the light-blocking area S2, the light cutoff boundary line S3, the rectangular strip-shaped light-transmitting area S4, and the light-transmitting area S5 composed of a concave array. Detailed Implementation

[0020] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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. They should not be construed as limiting the specific protection scope of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0022] See the accompanying drawings. The microlens array-based headlight module described in this embodiment includes at least one optical module 1 whose optical axis direction is consistent with the vehicle's direction of travel, or includes multiple optical modules 1, wherein the optical axis direction of at least one optical module 1 is consistent with the vehicle's direction of travel, and there is a deflection angle between the optical axis direction of at least one optical module and the vehicle's direction of travel.

[0023] If the headlight module has only one optical module 1, the optical axis of the optical module 1 is aligned with the vehicle's direction of travel to ensure illumination brightness. If it is necessary to increase the illumination range, multiple optical modules can be set up, and the outer optical modules can be deflected in the left and right directions to expand the illumination range.

[0024] Taking 5 optical modules as an example: like Figure 1 As shown, the five optical modules are symmetrical from left to right, and none of them rotate. The optical axis direction is consistent with the vehicle's direction of travel.

[0025] like Figure 2 As shown, the five optical modules are symmetrical from left to right, with the leftmost optical module deflected to the left and the rightmost optical module deflected to the right. The optical axis direction (dashed arrow) of the two deflected optical modules has a deflection angle α with respect to the vehicle's direction of travel (solid arrow). The range of α is 0~30°, and the angle of α is 2.5°, 3°, 5°, 6°, 8°, 10° or 15°.

[0026] like Figure 3As shown, the five optical modules are symmetrical from left to right, with the leftmost optical module deflected to the left by β and the second optical module from the left deflected to the left by α; the rightmost optical module deflected to the right by β and the second optical module from the right deflected to the right by α; the range of α is 0~30°, and the angle of α is 2.5°, 3°, 5°, 6°, 8°, 10° or 15°, and the angle of β is 1 to 3 times that of α.

[0027] like Figure 4 As shown, the five optical modules are asymmetrical, and the leftmost optical module is deflected to the left by α. like Figure 5 As shown, the five optical modules are asymmetrical, and the rightmost optical module is deflected to the right by α. like Figure 6 As shown, the five optical modules are asymmetrical, with the leftmost optical module deflected to the left by β and the second optical module from the left deflected to the left by α. like Figure 7 As shown, the five optical modules are asymmetrical, with the rightmost optical module deflected to the right by β and the second optical module to the right by α.

[0028] like Figure 8 As shown, a single optical module 1 can move freely within the lamp (it can also move after rotation), meaning that various patterns, horizontal lines, or vertical lines can be arranged within the headlight space. For example, from the front view, multiple optical modules are arranged in a vertical stripe shape (see...). Figure 8 b) Cross shape (see Figure 8 a) Rhombus, straight line, etc.

[0029] like Figure 9 As shown, the optical module 1 includes at least one LED light source 10, at least one condensing lens 2 and a corresponding condensing lens limiting member 6, at least one microlens array 3, a module bracket 5, a snap-fit ​​fastener 7 and a heat sink 8; the LED light source 10 is mounted on a circuit board 11, the circuit board 11 is provided with a first positioning hole 12, and the end face of the module bracket 5 is provided with a first positioning pin, and the circuit board 11 is fixed on the module bracket 5; the LED light source 10 can be multiple independent LED lights or an LED array, as long as it provides a light source.

[0030] The LED light source 10 is correspondingly arranged with the condenser lens 2. The module bracket 5 has a cavity inside to accommodate the condenser lens 2, and a limiting groove on the back of the cavity to accommodate the condenser lens limiting member 6. The condenser lens 2 is placed inside the module bracket 5 and fixed by the condenser lens limiting member 6. The condenser lens 2 has various shapes and structures: in terms of shape, the collimator can be circular or rectangular; in terms of type, it can be a TIR lens, a plano-convex lens, or a biconvex lens; in terms of optical surface type, it can be a plane, a sphere, or a freeform surface.

[0031] The module bracket 5 has a stepped surface 51 inside to support the microlens array 3, and the microlens array 3 is placed inside the module bracket 5; the module bracket 5 has a locking block 52 on the outside, and the buckle fastener 7 has a frame structure with buckles 71 on both sides, which engage and fix with the locking blocks 52 on both sides of the module bracket 5, thereby restricting the microlens array 3 inside the module bracket 5.

[0032] The heat sink 8 is fixed to the other side of the circuit board 11. One side of the heat sink 8 has a comb-shaped heat dissipation part 81, and the other side has a mounting surface 82. The mounting surface 82 has a second positioning pin 83. The circuit board 11 has a second positioning hole 13, which works in conjunction with the second positioning pin 83. The comb-shaped heat dissipation part 81 can dissipate the heat generated by the LED light source, preventing the component from overheating and being damaged.

[0033] As shown in Figure 10, the microlens array 3 may sequentially include an incident lens 31, an incident lens carrier 32, a light-shading mask layer 33, an adhesive layer 34, an exiting lens carrier 35, a light-shielding mask layer 36, and an exiting lens 37, wherein the positions of the light-shading mask layer 33 and the adhesive layer 34 can be interchanged. Furthermore, the incident lens 31 and the incident lens carrier 32 can be separate or combined into a single incident lens layer; the exiting lens carrier 35, the light-shielding mask layer 36, and the exiting lens 37 can also be separate or combined into a single exiting lens layer.

[0034] The microlens array 3 is composed of multiple microlens components. Each individual microlens component comprises a unit of incident lens, incident lens carrier, light-masking mask layer, adhesive layer, exiting lens carrier, light-shielding mask layer, and exiting lens. Regarding the focal points of the incident and exiting lenses, the focal point of the incident lens 31 is 0mm to 0.15mm higher (vertically) than the focal point of the exiting lens 37. The left-right adjustment is based on the requirements for low beam, with an offset range of 0mm to 0.2mm (left-right). For high beam applications, the incident lens 31 is 0mm to 0.15mm lower than the exiting lens 37.

[0035] Both the incident lens carrier 32 and the exiting lens carrier 35 are made of light-transmitting material. The incident side of the incident lens carrier 32 is used to fix the incident lens 31 and determine the lens position. The exiting side of the incident lens carrier 32 and the incident side of the exiting lens carrier 35 together fix the light pattern mask layer 33, forming a light pattern forming device. The exiting side of the exiting lens carrier 35 is used to fix the exiting lens 37 and determine the lens position. At the same time, a light-shielding mask layer 36 can also be placed on the light-shielding surface of the exiting lens carrier 35, and the exiting lens 37 is fixed after the light-shielding mask layer 36.

[0036] like Figure 14As shown, the optical mask unit of a single microlens assembly consists of a light-transmitting region S1 (dashed frame region) and a light-blocking region S2 (solid frame region), with a light-cutoff boundary line S3 in between. The light-cutoff boundary line S3 is composed of a right boundary line (line1), a first inclined edge (line2), a raised boundary line (line3), a second inclined edge (line4), and a left boundary line (line5). Lines 1, 3, and 5 are parallel to each other. The angle θ1 between line2 and line1 / line3 is 30°~50°, preferably 35° or 45°. Line4 and... The included angle θ2 of line3 / line5 is 10°~30°, preferably 20°, that is, the inclined side line2, the raised boundary line line3, and the inclined side line4 form a trapezoidal raised structure; the length L3 of the raised boundary line line3 is 0.05mm~0.2mm, the vertical distance h1 between the right boundary line line1 and the raised boundary line line3 is 0.2~0.4 times the length L3 of the raised boundary line, and the vertical distance h2 between the raised boundary line line3 and the left boundary line line5 is 0.1~0.3 times the length L3 of the raised boundary line.

[0037] like Figure 11 As shown, there is an alignment problem between lines 1 and 5 of adjacent near-light photomasks. To solve this problem, the vertical positions of adjacent microlens assemblies in the same row can be adjusted so that there is a vertical misalignment between adjacent microlens assemblies, such as... Figure 12 As shown. Alternatively, adjacent microlens assemblies in the same row are not misaligned vertically, but the second microlens assembly is rotated counterclockwise, as shown. Figure 13 As shown, this aligns line 1 and line 5 between adjacent near-light photomasks on the left and right sides. At the same time, the corresponding entire microlens assembly will also undergo corresponding operations such as displacement or rotation.

[0038] To achieve a more uniform and publicly acceptable light energy distribution, light-blocking structures are added at different locations in the light-transmitting region S1 of the light-masking mask layer 33, or light-transmitting holes 41 are added in the light-blocking region S2, and localized light-transmitting regions are also increased. Specifically, for example... Figure 15 As shown. The dashed line represents the light-transmitting area S1, and the solid line represents the light-blocking area S2. A light-transmitting aperture 41 is added to the light-blocking area S2, and the size and shape of the aperture 41 are variable. A first light-blocking structure 42 is added to the light-transmitting area S1. The first light-blocking structure 42 is located above the light-transmitting area S1, and its shape is usually flat at the top and pointed at the bottom, and symmetrical from left to right. A second light-blocking structure 43 is added within the light-transmitting area S1. This structure mainly blocks the energy of the near-light line 1 and below. A local light-transmitting area 44 is added by moving the line 3 down. The number of all four operations is less than or equal to the number of microlens groups in a single module.

[0039] The light-shielding mask layer 36 is located between the light-emitting lens carrier 35 and the light-emitting lens 37, mainly to block stray light. The light-shielding mask layer 36 has several rectangular strip-shaped light-transmitting areas S4. Figure 16 (the dashed part), or the light-transmitting area S5 composed of a concave array ( Figure 17 (The dotted line portion).

[0040] The structure of the incident lens can be chosen from any of the following: The first structure is as follows Figure 18 As shown, the incident lens 31 is composed of rows of incident lens units. Each incident lens unit consists of a first hemispherical lens 311, several cylindrical lenses 312, and a second hemispherical lens 313. There is an vertical misalignment between the cylindrical lenses 312 in each row, and the misaligned parts are bridged by cylindrical surfaces 314.

[0041] The second structure is as follows: Figure 19 As shown, the incident lens unit is also composed of a first hemispherical lens 311, a slender cylindrical lens 315, and a second hemispherical lens 313, but each row of cylindrical lenses 313 is arranged neatly without any misalignment.

[0042] The third structure is as follows Figure 20 As shown, the incident lens unit is composed of a freeform surface lens or a spherical lens 316, and is misaligned in the vertical direction.

[0043] The fourth structure is as follows: Figure 21 As shown, the incident lens unit is composed of a freeform surface lens or a spherical lens 316, and there is no misalignment in the vertical direction; they are arranged neatly.

[0044] The structure of the light-emitting lens 37 can be selected from any of the following: The first structure is as follows Figure 22 As shown, the light-emitting lens 37 is composed of a freeform surface lens 2 or a spherical lens 2 371, and the adjacent lenses are misaligned in the vertical direction.

[0045] The second structure is as follows: Figure 23 As shown, the light-emitting lens 37 is composed of a freeform surface lens 2 or a spherical lens 2 372, and the adjacent lenses are not misaligned in the vertical direction and are arranged neatly.

[0046] In this embodiment, a light cutoff boundary line S3 composed of 5 lines is used to divide the light-transmitting region S1 and the light-blocking region S2 of the light-shaped mask layer 33. A trapezoidal protrusion structure is provided on the light cutoff boundary line. The near-beam pattern corresponding to this light-shaped mask layer presents a near-inverted trapezoidal shape, or a bathtub shape, where the middle part is lower than the sides, and the left side is generally lower than the right side, but higher than the bottom of the middle bathtub. The near-beam pattern is as follows: Figure 24 As shown.

[0047] The lowered center of the beam pattern precisely avoids the eye level of oncoming drivers. This eliminates direct glare from the eyes of oncoming drivers, preventing momentary visual dazzle and significantly reducing the risk of collisions when meeting oncoming traffic. The raised sides extend the light coverage to key areas on both sides of the vehicle, including pedestrians, non-motorized vehicles, roadside obstacles, and vehicles approaching from the side at intersections. This completely solves the blind spot problem caused by insufficient light on one side in traditional "left-low, right-high" or "left-high, right-low" beam patterns. Furthermore, the lower center and higher ends of the beam pattern better align with human visual habits, effectively reducing eye strain.

[0048] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A vehicle headlight module based on a microlens array, characterized in that: The optical module includes at least one optical module whose optical axis is aligned with the vehicle's direction of travel, or includes multiple optical modules, wherein at least one optical module has an optical axis aligned with the vehicle's direction of travel, and at least one optical module has an optical axis that deflects from the vehicle's direction of travel. The optical module includes an LED light source, a focusing lens, and a microlens array. The microlens array includes an incident lens layer, a light-shading mask layer, and an exit lens layer. The light-shading mask layer is divided into a light-transmitting area and a light-blocking area by a light cutoff boundary line. A raised boundary line is provided in the middle of the light cutoff boundary line, and the vertical distance between the raised boundary line and the right boundary line is greater than the vertical distance between the raised boundary line and the left boundary line.

2. The automotive headlight module based on a microlens array as described in claim 1, characterized in that: The number of optical modules is 1 to 7, and each optical module can be arranged in a vertical strip, cross, rhombus or straight line.

3. A vehicle headlight module based on a microlens array as described in claim 2, characterized in that: The number of optical modules is 5 or 6, and at least 1 or 2 optical modules in the middle position have their optical axis direction consistent with the vehicle's direction of travel.

4. A vehicle headlight module based on a microlens array as described in claim 3, characterized in that: The optical modules located at the outermost edge on one or both sides are deflected toward their respective sides by their optical axis direction, and the deflection angle α formed by the optical axis and the direction of vehicle travel is in the range of 0~30°; that is, the optical module at the outermost edge on the left is deflected to the left by 0~30°, and / or the optical module at the outermost edge on the right is deflected to the right by 0~30°.

5. A vehicle headlight module based on a microlens array as described in claim 3, characterized in that: The optical modules located at the outermost edge on one or both sides and their adjacent optical modules have their respective optical axes deflected toward their respective sides. The deflection angle α of the optical module closer to the center is less than or equal to the deflection angle β of the optical module farther from the center. The range of α is 0~30° and the range of β is 0~60°.

6. A vehicle headlight module based on a microlens array as described in claim 5, characterized in that: The angle of α is 2.5°, 3°, 5°, 6°, 8°, 10° or 15°, and the angle of β is 1 to 3 times that of α.

7. A vehicle headlight module based on a microlens array as described in claim 1, characterized in that: The optical mask layer is composed of multiple optical mask units. There is a vertical misalignment or counterclockwise rotation between adjacent optical mask units in the same row, and the light cutoff boundary lines between adjacent optical mask units are flush.

8. A vehicle headlight module based on a microlens array as described in claim 7, characterized in that: The light-transmitting area of ​​the light-transmitting mask unit is provided with a light-shielding structure, and / or the light-shielding area is provided with a light-transmitting hole or a partial light-transmitting area, the size and shape of the light-transmitting hole being variable.

9. A vehicle headlight module based on a microlens array as described in claim 1, characterized in that: The light-incident lens layer includes a light-incident lens and a light-incident lens carrier, which are either separate structures or fixed as one unit; the light-exiting lens layer includes a light-exiting lens carrier, a light-shielding mask layer, and a light-exiting lens, which are either separate structures or fixed as one unit.

10. A vehicle headlight module based on a microlens array as described in claim 1, characterized in that: The optical module also includes a module bracket, a condenser lens limiting component, and a snap fastener. The LED light source is fixed behind the module bracket, and the condenser lens and microlens array are placed inside the module bracket, with both ends limited by the condenser lens limiting component and the snap fastener.

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