Optical module, vehicle lamp and vehicle

Abstract

The utility model provides an optical module, a vehicle lamp and a vehicle. The optical module comprises a light source; the light condensing module comprises a light condensing surface and a light emitting surface, and the light condensing surface is arranged close to the light source; the light-emitting surface is far away from the light source and comprises a low-beam light-emitting surface and a high-beam light-emitting surface which are arranged up and down, and a region III forming structure is arranged at the part between the low-beam light-emitting surface and the high-beam light-emitting surface; the light shielding plate is arranged on the light emitting side, away from the light source, of the light condenser and located in the middle of the light condensing module, a cut-off line forming structure protruding upwards is arranged in the middle of the light shielding plate in the width direction, and in the width direction of the optical module, the position of the III area forming structure is basically consistent with the position of the cut-off line forming structure. The height of the III region forming structure is lower than that of the cut-off line forming structure; the lens is arranged on the side, away from the light condensation module, of the light shielding plate and used for collimating light emitted by the light condensation module.

Description

Technical Field

[0001] The present application relates to the field of vehicle lighting technology, and in particular to an optical module, a vehicle lamp and a vehicle. Background Art

[0002] Vehicles have become an indispensable means of transportation in today's society, bringing great convenience to people's lives and work. Vehicles generally need to be equipped with headlights, which can not only facilitate surrounding vehicles and drivers to observe the vehicle in time and serve as a warning, but also allow drivers to observe the road conditions during driving and reduce the occurrence of traffic accidents.

[0003] The light shapes of headlights mainly include low beam and high beam. When using headlights, drivers need to change the light shapes of headlights in real time according to different road conditions and vehicle conditions to meet the requirements of safe driving. This requires the design of specific headlight optical mechanisms to achieve different headlight shapes to simultaneously meet the requirements of light shape illumination, angle, and uniformity. The low beam of headlights is used to achieve close-range lighting. According to the standards related to headlights, the low beam light shape has an important component called "Zone III", which is located above the cutoff line of the low beam and mainly illuminates objects above the road surface such as signs, allowing drivers to obtain information such as signs.

[0004] At present, the main ways to achieve the low beam zone III light shape in the headlight optical mechanism are: modifying the structure of the headlight optical element (such as lens), or using the structure of the reflection element in the headlight and the reflection surface on the lens bracket and other parts to present the low beam zone III light shape. However, the existing technical solutions still have defects such as unsightly appearance, low optical structure integration, and large tolerance. Utility Model Content

[0005] In order to solve the above problems, the technical solutions adopted in the embodiments of the present application are as follows:

[0006] An optical module, comprising:

[0007] light source;

[0008] A light focusing module, comprising a light focusing surface and a light emitting surface, wherein the light focusing surface is arranged close to the light source; the light emitting surface is arranged away from the light source and comprises a low beam light emitting surface and a high beam light emitting surface arranged up and down, and a III zone forming structure is arranged at a position between the low beam light emitting surface and the high beam light emitting surface;

[0009] A shading plate is provided on the light-emitting side of the concentrator away from the light source and at a height in the middle of the concentrating module, and an upwardly convex cutoff line forming structure is provided in the middle of the width direction of the shading plate, and the position of the zone III forming structure is substantially consistent with the position of the cutoff line forming structure along the width direction of the optical module, and the height of the zone III forming structure is lower than the height of the cutoff line forming structure;

[0010] The lens is arranged on a side of the shading plate away from the focusing module and is used for collimating the light emitted by the focusing module.

[0011] In some embodiments, the cutoff line forming structure includes a groove extending in the front-to-back direction, the groove opens downward, and the projection of the zone III forming structure on the light emitting surface of the focusing module falls within a projection groove formed by the groove on the light emitting surface.

[0012] In some embodiments, the light source includes a low-beam light source and a high-beam light source arranged in an upper and lower interval, and the focusing module includes a low-beam concentrator and a high-beam concentrator arranged in an upper and lower position, the low-beam concentrator is arranged in front of the low-beam light source, and the high-beam concentrator is arranged in front of the high-beam light source;

[0013] The zone III forming structure is located in the middle and lower part of the low beam light emitting surface of the low beam concentrator, and

[0014] The light-emitting surface of zone III of the zone forming structure is directly opposite to the rear end of the groove in the front-to-back direction.

[0015] In some embodiments, the zone III forming structure includes a light guide extending in the front-to-back direction, the rear end of the light guide is connected to the low beam light emitting surface, and the front end of the light guide is the zone III light emitting surface;

[0016] The zone III light emitting surface extends forward and is close to / fits with the rear end of the groove, and the distance between the zone III light emitting surface and the low beam light source in the front-to-back direction is greater than the distance between the zone III light emitting surface and the low beam light source in the front-to-back direction.

[0017] In some embodiments, the light-emitting surface of zone III of the light guide is connected to the rear end of the groove, and the extension length direction of the light guide faces straight ahead and is consistent with the length direction of the groove. Specifically, when the light-emitting surface of zone III extends forward and is connected to the rear end of the groove, all the light emitted by the light-emitting surface of zone III will move forward along the groove, and no light will leak from the area between the light-emitting surface of zone III and the rear end of the groove. The emitted light will be projected forward as much as possible through the groove formed by the cutoff line structure, thereby improving the light utilization rate.

[0018] In some embodiments, the low-beam light-emitting surface of the low-beam concentrator is located behind the high-beam light-emitting surface of the high-beam concentrator, and a stepped plane is formed between the low-beam light-emitting surface and the high-beam light-emitting surface.

[0019] In some embodiments, the light guide is laid on the stepped plane, and the distance between the zone III light emitting surface and the high beam light emitting surface in the front-to-back direction is smaller than the distance between the zone III light emitting surface and the low beam light emitting surface in the front-to-back direction.

[0020] In some embodiments, the zone III forming structure includes a pattern diffusion surface.

[0021] In some embodiments, the pattern diffusion surface includes a plurality of vertical stripes arranged in sequence side by side in the left-right direction, and the outer contour of the pattern diffusion surface is a square.

[0022] In some embodiments, the cross-section of the cut-off line forming structure includes a first inclined segment AB, a horizontal segment BC, and a second inclined segment CD, which are arranged and connected in sequence from the middle to one side, with the center of the light-emitting surface of the focusing module as the origin, the horizontal line passing through the origin as the X-axis, and the vertical line passing through the origin as the Y-axis. The coordinates of the two ends of the horizontal segment BC are B(0, 0.57) and C(k, 0.57), respectively. The angle ∠ABC between the first inclined segment AB and the horizontal segment BC is 135°, and the angle range α of the angle ∠BCD between the second inclined segment CD and the horizontal segment BC is greater than or equal to 160° and less than 180°; wherein the range of k is 2.5-3.5.

[0023] A vehicle lamp and a vehicle, comprising the optical module described in any one of the items.

[0024] Compared with the prior art, this application has the following advantages:

[0025] The zone III forming structure and the cut-off line forming structure are both located in the middle of the width direction of the optical module, and the height of the zone III forming structure is lower than the cut-off line forming structure, so that the narrow high beam dimming area below the cut-off line forming structure can be used to form a low beam zone III light pattern: part of the low beam can form a low beam zone III light pattern in the high beam light pattern area in the distance without affecting the normal presentation of the high beam light pattern.

[0026] By adopting the above technical solution, the present application integrates the zone III structure on the focusing module, reduces the parts and assembly tolerances caused by the additional parts, and can ensure optical accuracy; since no other parts are required, the cost is saved;

[0027] Since the III zone structure is integrated on the focusing module, the aesthetics of the optical module is guaranteed compared to when the III zone structure is made on the lens or other parts, thereby solving the defects of the existing technical solutions such as unsightly appearance, low optical structure integration, low tolerance accuracy, and high cost.

[0028] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A structural diagram of an optical module provided in one embodiment of the present application;

[0031] Figure 2 for Figure 1 The main view after omitting the lens;

[0032] Figure 3 for Figure 1 Another structural diagram from another perspective;

[0033] Figure 4 A longitudinal cross-sectional light path diagram for forming a low beam zone III light pattern provided in an embodiment of the present application;

[0034] Figure 5 A projection light effect diagram of a low beam light pattern and a low beam zone III light pattern provided in an embodiment of the present application;

[0035] Figure 6 It is a light schematic diagram of the existing lighting system;

[0036] Figure 7 A top view of an optical module structure provided in one embodiment of the present application;

[0037] Figure 8 A front view of an optical module structure provided in one embodiment of the present application;

[0038] Fig. 9 A cross-sectional structural diagram of a structure forming a cut-off line on a visor;

[0039] Fig.10 For light to pass through Fig. 9 Schematic diagram of the cutoff line shape formed at the junction of the high and low beams on the screen after the cutoff line formation structure;

[0040] Fig.11 For light to pass through Fig. 9 Schematic diagram of the black and white effect at the junction of high and low beams on the screen after the cutoff line forms a structure;

[0041] Fig.12 The cross-sectional structure diagram of the cut-off line formation structure on the shading plate (α is 170°);

[0042] Fig.13 For light to pass through Fig.12Schematic diagram of the cutoff line shape formed at the junction of the high and low beams on the screen after the cutoff line formation structure;

[0043] Fig.14 For light to pass through Fig.12 Schematic diagram of the black and white effect at the junction of high and low beams on the screen after the cutoff line forms a structure;

[0044] In the figure: 1. light source; 2. cut-off line forming structure; 3. light-transmitting component;

[0045] 110, low beam light source; 120, low beam condenser; 121, low beam light emitting surface;

[0046] 200, zone III forming structure; 210, light guide; 211, zone III light emitting surface;

[0047] 310, high beam light source; 320, high beam concentrator; 321, high beam light emitting surface;

[0048] 400, stepped plane;

[0049] 500, sunshade; 510, cut-off line forming structure;

[0050] 600. Lens. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0053] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0055] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0057] It is worth noting that in the directions described below, Figure 2 The up and down directions in are the up and down directions of the optical module. Figure 2 The left and right width direction is the left and right width direction of the optical module. Figure 2 The direction outward from the paper is the front, and the direction inward from the paper is the back.

[0058] refer to Figure 1-Figure 3 , the present application provides an optical module, comprising:

[0059] light source;

[0060] A light focusing module, comprising a light focusing surface and a light emitting surface, wherein the light focusing surface is arranged close to the light source; the light emitting surface is arranged away from the light source and comprises a low beam light emitting surface 121 and a high beam light emitting surface 321 arranged up and down, and a zone III forming structure 200 is arranged at a position between the low beam light emitting surface 121 and the high beam light emitting surface 321;

[0061] A shading plate 500 is provided on the light-emitting side of the concentrator away from the light source and at a height in the middle of the concentrating module. A cut-off line forming structure 510 convex upward is provided in the middle of the shading plate 500. In the width direction of the optical module, the position of the zone III forming structure 200 is substantially consistent with the position of the cut-off line forming structure 510, and the height of the zone III forming structure 200 is lower than the height of the cut-off line forming structure 510.

[0062] The lens 600 is disposed on a side of the shading plate 500 away from the light focusing module, and is used for collimating the light emitted by the light focusing module.

[0063] Specifically, the light emitted by the light source is focused by the focusing module, passes through the sunshade 500 and enters the lens 600. Most of the light emitted from the upper low beam light emitting surface 121 passes through the cut-off line forming structure 510 to form a low beam light and dark cut-off line in the distance; the light emitted from the lower middle part of the low beam light emitting surface 121 passes through the III zone forming structure 200 and then is emitted forward from the narrow space below the cut-off line forming structure 510 (the narrow space is in the high beam dimming area), forming a low beam III zone light type above the low beam light and dark cut-off line in the distance (the entire area above the low beam light and dark cut-off line is the high beam light type area), and the low beam III zone light type can illuminate objects such as signs located above the road surface, so that the driver can obtain information such as signs.

[0064] This application has the following advantages:

[0065] The zone III forming structure 200 and the cut-off line forming structure 510 are both located in the middle of the width direction of the optical module, and the height of the zone III forming structure 200 is lower than the cut-off line forming structure 510, so that the narrow and long area below the cut-off line forming structure 510 (the narrow and long area is in the high beam dimming area) can be used to form the zone III light pattern: part of the low beam can form a low beam zone III light pattern at the lower part of the high beam light pattern of the distant screen, without affecting the normal presentation of the high beam light pattern (in the high beam mode, the light emitted by the lower high beam light emitting surface 321 forms a high beam light pattern above the high beam light and dimming cut-off line in the distance. Since the low beam zone III light pattern of the present application has a small area and moderate brightness, it will not affect the high beam light pattern).

[0066] By adopting the above technical solution, the present application integrates the zone III structure on the focusing module, reduces the parts and assembly tolerances caused by the additional parts, and can ensure optical accuracy; since no other parts are required, the cost is saved;

[0067] Since the III zone structure is integrated on the focusing module, the optical module is aesthetically pleasing compared to when the III zone structure is made on the lens 600 or other parts, thereby solving the defects of the existing technical solutions such as unsightly appearance, low optical structure integration, low tolerance accuracy, and high cost.

[0068] like Figure 3 In some embodiments, the cut-off line forming structure 510 includes a groove extending in the front-to-back direction, the opening of the groove is downward, and the projection of the zone III forming structure 200 on the light-emitting surface falls within a projection groove formed by the projection of the groove on the light-emitting surface.

[0069] Specifically, the low beam emitted from the lower middle part of the low beam emitting surface 121 enters the narrow space below the cut-off line forming structure 510 (the narrow space is in the high beam dimming area) after being emitted by the zone III forming structure 200 and is emitted forward to form a low beam zone III light pattern in the distance.

[0070] In the present embodiment, since the zone III forming structure 200 is located in the projection groove formed by the projection of the groove on the light emitting surface, the zone III light emitting surface 211 is also located in the projection groove of the groove on the light emitting surface. The low beam emitted by the zone III light emitting surface 211 of the zone III forming structure 200 just completely enters the groove and is emitted forward along the groove and finally emitted from the lens 600. This can avoid the cross-sectional area of ​​the zone III light emitting surface 211 being too large or the zone III light emitting surface 211 being offset and misaligned with the groove, resulting in some light being unable to enter the groove and generating stray light, and can also ensure that there is enough light entering the groove to form a low beam zone III light pattern with sufficient brightness.

[0071] like Figure 2-Figure 4 In some embodiments, the light source includes a low-beam light source 110 and a high-beam light source 310 arranged in an upper and lower interval, and the focusing module includes a low-beam concentrator 120 and a high-beam concentrator 320 arranged in an upper and lower manner, the low-beam concentrator 120 is arranged in front of the low-beam light source 110, and the high-beam concentrator 320 is arranged in front of the high-beam light source 310;

[0072] The zone III forming structure 200 is located at the lower middle portion of the low beam light emitting surface 121 of the low beam concentrator 120 , and the zone III light emitting surface 211 of the zone III forming structure 200 is directly opposite to the rear end of the groove in the front-rear direction.

[0073] When the low beam is on, the low beam light located in the lower middle portion is converged and reflected by the rear end of the low beam concentrator 120 and then emitted from the light emitting surface 211 of zone III of the low beam zone III structure, passes through the narrow space below the cut-off line forming structure 510 of the shading plate 500 (the narrow space is in the high beam dimming area) and finally exits from the lens 600 to form the low beam zone III light pattern.

[0074] The above-mentioned zone III light emitting surface 211 is directly opposite to the rear end of the groove in the front-to-back direction, which can ensure that the low beam light emitted by the zone III light emitting surface 211 enters the groove of the cut-off line forming structure 510, and the low beam zone III light pattern has a good light effect.

[0075] like Figure 3In some embodiments, the zone III forming structure 200 includes a light guide 210 extending in the front-to-back direction, the rear end of the light guide 210 is connected to the low beam light emitting surface 121, and the front end of the light guide 210 is the zone III light emitting surface 211;

[0076] The zone III light emitting surface 211 extends forward and approaches / fits the rear end of the groove, and the distance between the zone III light emitting surface 211 and the low beam light source 110 in the front-to-back direction is greater than the distance between the low beam light emitting surface 121 and the low beam light source 110 in the front-to-back direction.

[0077] Specifically, the light guide 210 can guide the low beam entering therein so that it is all emitted from the light emitting surface 211 of zone III, and can also prevent the low beam light used to form zone III from being scattered into the external space, resulting in failure to form a light pattern of zone III;

[0078] The light emitting surface 211 of zone III extends forward and approaches / fits with the rear end of the groove, which can reduce the leakage of light emitted from the light emitting surface 211 of zone III. The emitted light will enter the groove of the cut-off line forming structure 510 as much as possible and be emitted forward, thereby improving the light utilization rate. The low beam light emitting surface 121 is positioned further back than the light emitting surface 211 of zone III, and the light emitted from the low beam light emitting surface 121 and converged at the front end of the visor 500 is also further back, that is, the low beam focus position is further back, and the visor 500 and the lens 600 can also be placed further back, which is beneficial to shorten the size of the entire optical module in the front-to-back direction.

[0079] like Figure 3 In some embodiments, the light emitting surface 211 of zone III of the light guide 210 is connected to the rear end of the groove, and the extended length direction of the light guide 210 faces forward and is consistent with the length direction of the groove.

[0080] Specifically, when the light emitting surface 211 of zone III extends forward and is completely connected with the rear end of the groove, there is no gap between the light emitting surface 211 of zone III and the rear end of the groove. At this time, all the light emitted by the light emitting surface 211 of zone III will move forward along the groove, and no light will leak from the gap between the light emitting surface 211 of zone III and the rear end of the groove. The emitted light will be projected forward as much as possible through the groove of the cut-off line forming structure 510 to improve the light utilization rate.

[0081] Specifically, the extension length direction of the light guide 210 and the length direction of the groove are both facing straight ahead, and the low beam emitted by the zone III light-emitting surface 211 of the zone III structure is emitted just along the groove to the straight ahead and finally emitted from the lens, thereby avoiding the situation where the light is transmitted from the cylindrical surface of the light guide 210 to form stray light when the extension direction of the light guide 210 is obliquely forward, or the light is obliquely emitted and hits the groove wall of the groove and cannot form a low beam zone III light projection at a distance.

[0082] Furthermore, the cross-sectional profile of the zone III light emitting surface 211 of the light guide 210 is consistent with the cross-sectional shape of the groove. This is more conducive to forming a low beam zone III light pattern at the lower part of the high beam light pattern and the lower boundary of the low beam zone III light pattern formed is clearer, and the lower boundary of the low beam zone III light pattern just falls on the low beam cutoff line, thereby further improving the brightness of the high and low beam junction and making the cutoff line of the high and low beam junction clearer.

[0083] like Figure 3 In some embodiments, the low beam emitting surface 121 of the low beam concentrator 120 is located behind the high beam emitting surface 321 of the high beam concentrator 320 , and a stepped plane 400 is formed between the low beam emitting surface 121 and the high beam emitting surface 321 .

[0084] Specifically, since the low beam needs to be focused at the front edge of the sunshade 500 to form a low beam cutoff line at a distance, and the high beam does not need to be focused, the high beam light-emitting surface 321 can be set as far forward as possible, and the brightness and clarity of the high beam light pattern finally emitted are also higher. A stepped plane 400 is formed between the low beam light-emitting surface 121 and the high beam light-emitting surface 321, and the low beam light-emitting surface 121 and the high beam light-emitting surface 321 are integrally formed, avoiding the part tolerance caused by the separate setting and assembly, and can improve the optical accuracy; the integral forming can reduce the number of mounting brackets, save costs, and the structure is simple and beautiful.

[0085] like Figure 3 and Figure 4 In some embodiments, the light guide 210 is laid on the stepped plane 400, and the distance between the zone III light emitting surface 211 and the high beam light emitting surface 321 in the front-to-back direction is smaller than the distance between the zone III light emitting surface 211 and the low beam light emitting surface 121 in the front-to-back direction.

[0086] Specifically, since the high beam light emitting surface 321 is closer to the front than the low beam light emitting surface 121 (equivalent to being closer to the rear end of the sun visor 500), the distance between the light emitting surface 211 of zone III and the high beam light emitting surface 321 in the front-to-back direction is closer, and the formed stepped plane 400 provides a separate and stable placement platform for the light guide 210 extending from the low beam light emitting surface 121 to the high beam light emitting surface 321, thereby avoiding light pattern fluctuations caused by unstable installation and also avoiding the need for a separate installation bracket.

[0087] like Figure 2 In some embodiments, the zone III forming structure 200 includes a pattern diffusion surface.

[0088] Specifically, the zone III light emitting surface 211 of the zone III forming structure 200 may adopt a patterned diffusion structure surface, which is beneficial to diffusing the emitted light and making the brightness of each part of the low beam zone III light type uniform.

[0089] like Figure 2In some embodiments, the pattern diffusion surface includes a plurality of vertical stripes arranged in a row in the left-right direction, and the outer contour of the pattern diffusion surface is a square. Specifically, the vertical stripes are conducive to the diffusion of light in the width direction, thereby expanding the width of the low beam zone III light pattern; the outer contour of the pattern diffusion surface is a square, which can define the boundary of the low beam zone III light pattern to avoid outward diffusion to form stray light.

[0090] Figure 6 It is a schematic diagram of the surface of structure 2 formed by the light of the existing lighting system hitting the cut-off line.

[0091] The light emitted from the middle of the light source 1 hits the surface of the cutoff line forming structure 2 and is reflected and deflected at a large angle, but cannot hit the middle of the light-transmitting component 3. In particular, the low beam light source itself has low luminous power, and the brightness of the middle of the low beam light pattern formed after being reflected and deflected at a large angle by the surface of the cutoff line forming structure is even lower, resulting in a large difference in brightness between the low beam light pattern and the high beam light pattern, an abrupt transition between the high beam light pattern and the low beam light pattern, and an incoherent connection, which poses a great safety hazard to nighttime driving.

[0092] refer to Figure 7-Figure 9 In some embodiments, the cross-section of the cut-off line forming structure 510 includes a first inclined segment AB, a horizontal segment BC, and a second inclined segment CD, which are arranged and connected in sequence from the middle to one side. The center of the light-emitting surface of the focusing module is taken as the origin, the horizontal line passing through the origin is taken as the X-axis, and the vertical line passing through the origin is taken as the Y-axis. The coordinates of the two ends of the horizontal segment BC are B(0, 0.57) and C(k, 0.57), respectively. The angle ∠ABC between the first inclined segment AB and the horizontal segment BC is 135°, and the angle range α of the angle ∠BCD between the second inclined segment CD and the horizontal segment BC is greater than or equal to 160° and less than 180°; wherein the range of k is 2.5-3.5.

[0093] Specifically, the light emitted by the light source is focused by the focusing module, passes through the sunshade 500 and enters the lens 600. Most of the light emitted from the upper low-beam light-emitting surface 121 passes through the front end of the cut-off line forming structure 510 and then passes through the lens 600 to form a low-beam light type at a lower position in the distance. Since the focusing module turns the imaging of the light source upside down and left and right when focusing, the low-beam light-dark cut-off line is at the upper edge of the low-beam light type; the light emitted from the lower high-beam light-emitting surface 321 passes through the front end of the cut-off line forming structure 510 and then passes through the lens 600 to form a high-beam light type at an upper position in the distance; the low-beam light-dark cut-off line is between the low-beam light type and the high-beam light type (such as Fig.11 ).

[0094] In this embodiment, the angle ∠ABC between the first inclined segment AB closer to the center of the light emitting surface and the horizontal segment is 135°, and the angle range α of the angle ∠BCD of the second inclined segment CD farther away from the center of the light emitting surface is greater than or equal to 160° and less than 180°, and ∠BCD is close to a straight angle, that is, the inclination degree of the second inclined segment CD is large. This design ensures that most of the light emitted from the part directly behind the second inclined segment CD on the low beam light emitting surface 121 and the high beam light emitting surface 321 does not contact the surface where the second inclined segment CD is located, and thus directly passes over the surface of the cut-off line forming structure 510 to enter the middle area of ​​the lens 600; at the same time, some of the light that can hit the surface where the second inclined segment CD is located has a very small angle with the surface of the second inclined segment CD and basically remains parallel to the surface of the second inclined segment CD. After the light path is changed by a small angle on the surface of the second inclined segment CD, it will still enter the middle area of ​​the lens 600 and finally hit the distant screen to be effectively utilized and hit the middle area of ​​the lens 600.

[0095] This application can prevent the light emitted by the focusing module from being reflected and deflected at a large angle by the cut-off line forming structure 510 and being unable to hit the middle of the lens 600 or enter the lens. Specifically:

[0096] (1) The light emitted by the focusing module can pass through the groove of the cutoff line forming structure 510 as much as possible and contact the surface of the cutoff line forming structure 510 less, or the light path is only changed by a small angle on the surface of the second inclined section CD of the cutoff line forming structure 510, so that the light emitted by the focusing module is effectively used to hit the middle area of ​​the lens 600, and the connection between the middle of the high and low beams has a sufficiently large brightness, and no unclear dark area is formed at the connection; and the light passing through the groove of the cutoff line forming structure 510 or the light path is changed by a small angle on the surface of the second inclined section CD of the cutoff line forming structure 510 will basically continue to be emitted straight ahead, and after passing through the front end of the cutoff line forming structure 510, a clear outline (low beam cutoff line) will be displayed in the middle of the upper edge of the low beam light pattern of the distant screen, and the outline lines are clear and the boundaries are distinct. The first inclined section AB is close to the center of the light emitting surface, and the luminous brightness at the center of the light emitting surface is relatively large. Therefore, the ∠ABC of the first inclined section AB is 135°, and the inclination is smaller than that of the second inclined section CD, which is sufficient to ensure that the brightness of the center position corresponding to this part on the screen light pattern is sufficient.

[0097] (2) Moreover, the range of k is between 2.5 and 3.5, that is, the spacing between BC is small, and the overall width of the cut-off line forming structure 510 in the left and right directions is small, which reduces the space volume of the middle area where the high and low beams meet, which is conducive to presenting a large brightness and a clear low beam cut-off line.

[0098] Therefore, the present application can increase the brightness of the junction between high and low beams and make the boundary clearer, especially can improve the brightness of the middle area of ​​the low beam light pattern, reduce the difference between the brightness of the low beam light pattern and the brightness of the high beam light pattern, can make the intensity transition of the middle area of ​​the light smoother, and the junction between high and low beams more coherent, thereby improving the safety of night driving.

[0099] It should be noted that due to the inverse focusing of the focusing module, the near-bright-dark cut-off line formed on the screen and the cross-sectional shape of the cut-off line forming structure 510 are just reversed in vertical and horizontal shapes. Fig.10 The near-bright-dark cut-off line formed is similar to a groove, with the screen center as the origin O', the H line as the horizontal coordinate, the V line as the vertical coordinate, and the coordinates of the two ends of the groove bottom of the groove cross section are b(0, -0.57) and c(-k, -0.57). The angle ∠abc between the first groove wall ab closer to the screen center and the groove bottom is 135°, and the angle ∠bcd of the second groove wall cd farther away from the screen center has an angle range α' of 160°-180°.

[0100] In view of regulatory requirements, the size of optical modules used in different vehicles varies greatly, so the coordinates of each point described in this application are not limited to units and can be understood as a numerical ratio.

[0101] The second inclined section CD has a large inclination. This design makes it possible for the light emitted from the zone III light emitting surface 211 located directly behind the second inclined section CD to directly pass through the groove of the cut-off line forming structure 510 and less contact the surface of the cut-off line forming structure 510, or only change the light path by a small angle of the second inclined section CD surface of the cut-off line forming structure 510, so that the light emitted from the zone III light emitting surface 211 is effectively used to hit the middle area of ​​the lens 600, thereby enhancing the brightness of the junction of the high and low beams, the cut-off line contour lines and the zone III light pattern; because the light emitted from the zone III light emitting surface 211 can be effectively prevented from being reflected and deflected at a large angle, the light emitted from the zone III light emitting surface 211 can be prevented from hitting other parts of the screen outside the zone III light pattern and affecting the presentation of the high beam light pattern.

[0102] The spacing between the designed horizontal segments BC of the present embodiment is relatively small, that is, the width of the cut-off line forming structure 510 in the left-right direction is relatively small as a whole, which reduces the space volume of the middle area where the high and low beams meet. The light emitted by the zone III forming structure cooperates with the cut-off line forming structure 510 with a smaller width to form a zone III light pattern with greater brightness and greater concentration, thereby improving driving safety. The increased brightness of the lower edge of the zone III light pattern also makes the low beam cut-off line clearer.

[0103] like Figure 12-13 In some embodiments, the angle α between the second inclined section CD and the horizontal section BC is 170°, and k=3.5.

[0104] In this embodiment, the angle α of the angle ∠BCD of the second inclined section CD further away from the center of the light emitting surface is 170°, k=3.5 (the coordinate of point C is C(3.5, 0.57)). This design allows the light emitted from the low beam light emitting surface 121 and the high beam light emitting surface 321 directly behind the second inclined section CD to directly pass over the surface of the cut-off line forming structure 510 and vertically enter the middle area of ​​the lens 600, and finally hit the distant screen to be fully utilized and form a clear cut-off line. Fig.14 , the brightness of the middle part of the high and low beams is high, and the cutoff line is clear. When the angle α of the second inclined section CD ∠BCD is designed too large, the cutoff line is too straight and the difference between the high and low beams is not great. When the k value is less than 3.5, the width of the middle area of ​​the cutoff line in the left and right directions is too small, which increases the difficulty of recognition.

[0105] The present application also discloses a vehicle lamp, comprising the optical module described in any one of the embodiments.

[0106] The present application also discloses a vehicle, comprising the vehicle light in the aforementioned embodiment.

[0107] The above-mentioned means of transportation may be a car, a train, a high-speed train or other means of transportation that requires headlights. By adopting the above-mentioned headlights, the zone III forming structure 200 and the cut-off line forming structure 510 are both located in the middle of the width direction of the optical module, and the height of the zone III forming structure 200 is lower than the cut-off line forming structure 510, so that the narrow high beam dimming area below the cut-off line forming structure 510 can be used: part of the low beam can form a low beam zone III light pattern in the high beam light pattern area at a distance, without affecting the normal presentation of the high beam light pattern.

[0108] By adopting the above technical solution, the present application integrates the zone III structure on the focusing module, reduces the parts and assembly tolerances caused by the additional parts, and can ensure optical accuracy; since no other parts are required, the cost is saved;

[0109] Since the III zone structure is integrated on the focusing module, the optical module is aesthetically pleasing compared to when the III zone structure is made on the lens 600 or other parts, thereby solving the defects of the existing technical solutions such as unsightly appearance, low optical structure integration, low tolerance accuracy, and high cost.

[0110] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0111] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An optical module, characterized in that: include: light source; A light focusing module, comprising a light focusing surface and a light emitting surface, wherein the light focusing surface is arranged close to the light source; the light emitting surface is arranged away from the light source and comprises a low beam light emitting surface and a high beam light emitting surface arranged up and down, and a III zone forming structure is arranged at a position between the low beam light emitting surface and the high beam light emitting surface; A shading plate is provided on the light-emitting side of the focusing module away from the light source and at a height in the middle of the focusing module, and an upwardly convex cutoff line forming structure is provided in the middle of the width direction of the shading plate, and the position of the zone III forming structure is substantially consistent with the position of the cutoff line forming structure along the width direction of the optical module, and the height of the zone III forming structure is lower than the height of the cutoff line forming structure; The lens is arranged on a side of the shading plate away from the focusing module and is used for collimating the light emitted by the focusing module.

2. The optical module according to claim 1, characterized in that: The cut-off line forming structure includes a groove extending in the front-rear direction, the opening of the groove is downward, and the projection of the zone III forming structure on the light emitting surface of the focusing module falls within the projection groove formed by the groove on the light emitting surface.

3. The optical module according to claim 2, characterized in that: The light source comprises a low-beam light source and a high-beam light source which are arranged in an upper and lower interval; the focusing module comprises a low-beam focusing device and a high-beam focusing device which are arranged in an upper and lower position; the low-beam focusing device is arranged in front of the low-beam light source; and the high-beam focusing device is arranged in front of the high-beam light source; The zone III forming structure is located at the lower middle part of the low beam light emitting surface of the low beam concentrator, and the zone III light emitting surface of the zone III forming structure is directly opposite to the rear end of the groove in the front-rear direction.

4. The optical module according to claim 3, characterized in that: The zone III forming structure includes a light guide extending in the front-to-back direction, the rear end of the light guide is connected to the low beam light emitting surface, and the front end of the light guide is the zone III light emitting surface; The zone III light emitting surface extends forward and is close to / fits with the rear end of the groove, and the distance between the zone III light emitting surface and the low beam light source in the front-to-back direction is greater than the distance between the zone III light emitting surface and the low beam light source in the front-to-back direction.

5. The optical module according to claim 4, characterized in that: The light emitting surface of zone III of the light guide is connected to the rear end of the groove, and the extending length direction of the light guide faces straight ahead and is consistent with the length direction of the groove.

6. The optical module according to claim 4, characterized in that: The low beam light emitting surface of the low beam concentrator is located behind the high beam light emitting surface of the high beam concentrator, and a stepped plane is formed between the low beam light emitting surface and the high beam light emitting surface.

7. The optical module according to claim 6, characterized in that: The light guide is laid on the stepped plane, and the distance between the zone III light emitting surface and the high beam light emitting surface in the front-to-back direction is smaller than the distance between the zone III light emitting surface and the low beam light emitting surface in the front-to-back direction.

8. The optical module according to claim 4, characterized in that: The zone III forming structure includes a pattern diffusion surface; the pattern diffusion surface includes a plurality of vertical stripes arranged in sequence in a side-by-side manner in the left-right direction, and the outer contour of the pattern diffusion surface is a square.

9. The optical module according to claim 1, characterized in that: The cross-section of the cut-off line forming structure includes a first inclined segment AB, a horizontal segment BC, and a second inclined segment CD, which are arranged and connected in sequence from the middle to one side. The center of the light-emitting surface of the focusing module is taken as the origin, the horizontal line passing through the origin is taken as the X-axis, and the vertical line passing through the origin is taken as the Y-axis. The coordinates of the two ends of the horizontal segment BC are B(0, 0.57) and C(k, 0.57), respectively. The angle ∠ABC between the first inclined segment AB and the horizontal segment BC is 135°, and the angle range α of the angle ∠BCD between the second inclined segment CD and the horizontal segment BC is greater than or equal to 160° and less than 180°; wherein the range of k is 2.5-3.

5.

10. A vehicle lamp and a vehicle, characterized in that: An optical module comprising any one of claims 1-8.

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