WO2021078114A1 - 一种车灯光学元件 - Google Patents

一种车灯光学元件 Download PDF

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Publication number
WO2021078114A1
WO2021078114A1 PCT/CN2020/122163 CN2020122163W WO2021078114A1 WO 2021078114 A1 WO2021078114 A1 WO 2021078114A1 CN 2020122163 W CN2020122163 W CN 2020122163W WO 2021078114 A1 WO2021078114 A1 WO 2021078114A1
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WIPO (PCT)
Prior art keywords
light
optical element
vehicle lamp
vehicle
high beam
Prior art date
Application number
PCT/CN2020/122163
Other languages
English (en)
French (fr)
Inventor
祝贺
仇智平
桑文慧
Original Assignee
华域视觉科技(上海)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华域视觉科技(上海)有限公司 filed Critical 华域视觉科技(上海)有限公司
Priority to EP20878582.4A priority Critical patent/EP4001743A4/en
Priority to JP2022513958A priority patent/JP2022547012A/ja
Publication of WO2021078114A1 publication Critical patent/WO2021078114A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/27—Thick lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/155—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having inclined and horizontal cutoff lines

Definitions

  • the present invention relates to the technical field of vehicle lighting, in particular to an optical element of a vehicle lamp.
  • a vehicle lamp module In the field of vehicle lamp technology, a vehicle lamp module generally refers to a device that has a plastic or glass lens or equivalent structure as the final light emitting element and is used for the illumination of the headlight of an automobile.
  • the car light optical element is an important part of the car light module. After the light emitted by the light source is emitted by the car light optical element, the required car light shape can be formed.
  • the car light module in the prior art has a primary optical element and a secondary optical element, and the required light shape needs to be obtained through two light distribution adjustments of the primary optical element and the secondary optical element. Compared with the two light distribution adjustments, it is only set
  • the primary light distribution adjustment of an optical element is more flexible. This is because the light shape can be adjusted by adjusting the light distribution parameters of the two optical elements.
  • the existing technology has the following shortcomings:
  • a condenser with multiple light-concentrating structures is used as the primary optical element, and a lens is set as the secondary optical element.
  • This arrangement increases the components in the lamp module and the overall size, and the second is the need Ensure that the relative position between the two optical components is accurate, and the requirements for assembly accuracy are high;
  • the concentrator When the concentrator is used as a low-beam optical element, it is also necessary to install a shading plate in front of the concentrator to form a low-beam cut-off line, which will result in a complicated structure of the vehicle lamp module and an increase in size.
  • the technical problem to be solved by the present invention is to provide a vehicle lamp optical element that integrates the primary optical element and the secondary optical element, so as to avoid the accuracy problem caused by assembly.
  • the present invention provides a vehicle light optical element.
  • One end of the vehicle light optical element is provided with a plurality of light-concentrating structures, and the other end is provided with a light-emitting surface, and the light-emitting surface is an arc-shaped surface that protrudes outward.
  • a through slot is opened on the optical element of the vehicle light, and the slot includes a light-emitting surface and a light-incident surface that are arranged oppositely.
  • the extension direction of the light-emitting surface and the light-incident surface is the same as the extension direction of the light-emitting surface.
  • the vehicle light optical element is a flat plate type.
  • the optical element of the vehicle lamp is in a bent shape, and includes a light collecting channel and a light guiding channel connected to each other, and a reflecting surface is provided at the connection point of the two; the bottom end of the light collecting channel is provided with a plurality of light collecting channels.
  • the front end of the light guide channel is provided with a light emitting surface; the isolation groove penetrates the light guide channel.
  • the vehicle light optical element is provided with a pointed groove with a V-shaped longitudinal section, and the pointed groove includes a pointed groove reflective surface far away from the light exiting surface and a pointed groove side surface close to the light exiting surface.
  • the extending direction of the pointed groove reflective surface and the pointed groove side surface are both the same as the extending direction of the light emitting surface.
  • the shape of the junction between the reflective surface of the pointed groove and the side surface of the pointed groove is adapted to the shape of the light cut-off line.
  • the vehicle light optical element is a flat plate type.
  • the optical element of the vehicle lamp is in a bent shape, and includes a light collecting channel and a light guiding channel connected to each other, and a reflecting surface is provided at the connection point of the two; the bottom end of the light collecting channel is provided with a plurality of light collecting channels.
  • the front end of the light guide channel is provided with a light emitting surface; the pointed groove is opened on the light guide channel.
  • the light-emitting surface is a convex lens surface or an arc-shaped surface extending in the left-right direction.
  • the optical element of the vehicle light includes a low beam part located above and a high beam part located below, both of which are provided with a plurality of light-concentrating structures at one end away from the light-emitting surface, and the other end is connected up and down as a whole. Together, the light-emitting surface is formed.
  • the bottom surface of the high beam part is provided with a groove, and the groove includes a front side surface and a rear side surface arranged oppositely, and the two are connected by a connecting surface.
  • a wedge-shaped gap is provided between the low beam portion and the high beam portion, and the width of the gap gradually shrinks from the rear end to the front end.
  • the condensing structure is a condensing cup structure with a cavity, the outer contour of which is a curved structure gradually increasing from the rear end to the front end, the cavity opening opens toward the rear end, and the bottom of the cavity It is provided with protrusions protruding to the rear end; or, the light-concentrating structure is a solid body whose outer contour is a curved structure gradually increasing from the rear end to the front end, and the light incident surface is a flat or curved surface; or The light-concentrating structure is a protrusion protruding toward the rear end.
  • the primary optical element and the secondary optical element of the prior art can be made into one piece, which can effectively reduce the number of parts. It is no longer necessary to ensure the relative position accuracy of the two during installation, which can better ensure the stability of the car light shape. It also reduces the size of the car light module;
  • the secondary light distribution can be realized in the integrated optical element, and the flexibility of the light distribution can be improved;
  • the high beam and high beam can be realized simultaneously in the integrated optical component of the vehicle light.
  • the low beam function makes the functions of the optical components of the car light diversified.
  • Figure 1 is a perspective view of the first embodiment
  • Figure 2 is a light path diagram of the first embodiment
  • Figure 3 is a perspective view 1 of the second embodiment
  • Figure 4 is a second perspective view of the second embodiment
  • Figure 5 is a light path diagram of the second embodiment
  • Fig. 6 is a perspective view 1 of the third embodiment
  • Figure 7 is a second perspective view of the third embodiment
  • Figure 8 is a light path diagram of the third embodiment
  • Figure 9 is a perspective view of the fourth embodiment
  • Figure 10 is a light path diagram of the fourth embodiment
  • Figure 11 is a perspective view 1 of the fifth embodiment
  • Figure 12 is a second perspective view of the fifth embodiment
  • Figure 13 is a cross-sectional view and an optical path diagram of the fifth embodiment
  • Figure 14 is a light path diagram of the sixth embodiment
  • Figure 15 is a light path diagram of the seventh embodiment
  • Figure 16 is a light path diagram of the eighth embodiment.
  • Figure 17 is a perspective view of the ninth embodiment
  • Figure 18 is a light path diagram of the ninth embodiment
  • Figure 19 is a perspective view of the tenth embodiment
  • Figure 20 is a light path diagram of the tenth embodiment
  • Figure 21 is a perspective view of the eleventh embodiment
  • Figure 22 is a light path diagram of the eleventh embodiment
  • Figure 23 is a perspective view of the twelfth embodiment
  • Fig. 24 is an optical path diagram of the twelfth embodiment.
  • the present invention provides a vehicle light optical element.
  • the vehicle light optical element 1 is made of light-transmitting material. One end is provided with a plurality of light-concentrating structures 11, and the other end is provided with a light-emitting surface 12, and the light-emitting surface 12 is outwardly.
  • a convex arc-shaped surface, the light-emitting surface 12 may be an arc-shaped surface extending along the left-right direction of the vehicle light optical element 1 as shown in FIGS. 1-16, or as shown in FIGS. 17-22 Convex lens surface.
  • the convex lens surface here refers to the revolving surface obtained by revolving the light-emitting surface section of the convex lens.
  • the present invention integrates the primary optical element and the secondary optical element in the prior art, and it is no longer necessary to ensure the relative position accuracy of the two during installation, which can better ensure the stability of the light shape, and at the same time reduce the cost of parts.
  • the number is conducive to reducing the size of the car light module. Specifically, it can be understood in conjunction with the first and second embodiments of the present invention:
  • the vehicle light optical element 1 is a flat plate.
  • the incident light enters the vehicle light optical element 1 from the condensing structure 11 and then exits through the light emitting surface 12 and is projected in front of the vehicle.
  • the optical element 1 of the vehicle light is of a bent type, and includes a light collecting channel 13 and a light guiding channel 14 connected to each other, and a reflecting surface 15 is provided at the joint of the two.
  • the light-concentrating channel 13 extends substantially in the up-down direction, a plurality of light-concentrating structures 11 are provided at the bottom end, the light-guiding channel 14 extends substantially in the front-to-back direction, and the front end is provided with a light-emitting surface 12.
  • the condensing structure 11 can receive and condense the incident light.
  • the condensed light enters the condensing channel 13 and is reflected by the reflective surface 15 and then is emitted from the exit light surface 12 at the end of the light guide channel 14 and projected in front of the vehicle. Most of the light incident on the reflecting surface 15 is totally reflected.
  • the light-emitting surface 12 is set as an arc-shaped surface protruding to the outside, that is, the primary optical element and the secondary optical element in the prior art are integrated, and there is no need to ensure the compatibility of both The relative position accuracy can better ensure the stability of the light shape.
  • the bending type is beneficial to shorten the size of the vehicle light optical element 1 in the front and rear direction, which can further reduce the size of the vehicle light module.
  • the present invention has a through slot 2 on the optical element 1 of the vehicle light.
  • the slot 2 includes a light-emitting surface 21 and a light-incoming surface that are arranged oppositely.
  • the extension direction of the light-emitting surface 21 and the light-incident surface 22 is the same as the extension direction of the light-emitting surface 12.
  • the extension direction may be different according to actual needs.
  • the integrated vehicle light optical element 1 is divided into two front and rear optical parts by the partition 2, the optical part on the front side corresponds to the existing secondary optical element, and the optical part on the rear side corresponds to the existing primary optical element, so
  • the optical element 1 of the vehicle lamp can realize the secondary light distribution while having the advantages of an integral part.
  • the isolation groove 2 can penetrate up and down and/or left and right.
  • the light exit surface 21 and the light incident surface 22 of the isolation groove 2 can have various forms, such as a flat surface, a concave surface, or a convex surface. Specifically, it can be understood in combination with Embodiment 3 and Embodiment 4 of the present invention:
  • the vehicle light optical element 1 is a flat plate
  • the partition 2 is a rectangular parallelepiped groove
  • the light emitting surface 12 extends along the left and right directions of the vehicle light optical element 1.
  • the incident light enters the vehicle lamp optical element 1 from the light-concentrating structure 11, passes through the light-emitting surface 21, the light-incident surface 22, and the light-emitting surface 12 in sequence, and then exits and is projected in front of the vehicle.
  • the optical element of the vehicle lamp in this embodiment is further improved on the basis of the second embodiment.
  • the compartment 2 penetrates the light guide channel 14 up and down, and the extension direction of the light emitting surface 12 is the same.
  • the incident light enters the light collection channel 13 from the light collection structure 11, enters the light guide channel 14 after being reflected by the reflective surface 15, and then exits through the light exit surface 21, the light entrance surface 22 and the exit light surface 12 in turn and is projected in front of the vehicle.
  • the third and fourth embodiments have the advantages of the integrated parts of the first and second embodiments, and can also realize the secondary light distribution through the partition 2 to obtain an ideal light shape.
  • the vehicle light optical element 1 of the present invention is provided with a pointed groove 3 with a V-shaped longitudinal section, and the pointed groove 3 includes a surface away from the light emitting surface.
  • the pointed groove reflective surface 31 of 12 and the pointed groove side surface 32 close to the light emitting surface 12, the extending direction of the pointed groove reflecting surface 31 and the pointed groove side surface 32 are the same as the extending direction of the light emitting surface 12, and may also be different.
  • the shape of the junction 33 of the pointed groove reflection surface 31 and the pointed groove side surface 32 is adapted to the shape of the low beam or high beam cut-off line, and is used to form the low beam or high beam cut-off line.
  • the shape of the cut-off line depends on the shape of the light-shaped cut-off line. Differently, part of the incident light is cut off by the connection 33 and then emitted from the light-emitting surface 12 to form a low beam or high beam cut-off line, thereby achieving the purpose of removing the shading plate and reducing the size of the vehicle lamp module.
  • Those skilled in the art can adjust the inclination angle of the pointed groove reflective surface 31 and the pointed groove side surface 32 as required. Specifically, it can be understood in conjunction with Embodiments 5 to 8 of the present invention:
  • the optical element 1 of the vehicle light in this embodiment is a flat plate, which is a further improvement made on the basis of the first embodiment, and is used to realize the low beam or auxiliary low beam function.
  • a pointed groove 3 recessed upward is opened on its bottom surface.
  • the pointed groove 3 includes an inclined groove reflecting surface 31 and a vertically arranged pointed groove side surface 32. Most of the light hitting the pointed groove reflecting surface 31 will be totally reflected. . Among them, part of the incident light A hits the tip groove reflective surface 31 and is reflected from the top surface of the lamp optical element 1, and part of the incident light B hits the tip groove reflective surface 31, and is reflected to the exit light surface 12 to exit.
  • the shape of the junction 33 between the pointed groove reflection surface 31 and the pointed groove side surface 32 (that is, the top of the pointed groove 3) is adapted to the shape of the low-beam cut-off line, and is used to form the low-beam cut-off line.
  • the shape depends on the difference of the low-beam cut-off line. The shape is different. Part of the incident light C is cut off by the connection 33 and then emitted from the light emitting surface 12 to form a low-beam cutoff line.
  • the optical element 1 of the vehicle lamp of this embodiment is a further improvement made on the basis of the first embodiment, and is used to realize the high beam or auxiliary high beam function.
  • a downwardly recessed pointed groove 3 is opened on the top surface of the light optical element 1.
  • Part of the incident light A is emitted to the pointed groove reflecting surface 31, and after reflection, it is emitted from the bottom surface of the light optical element 1, and part of the incident light B is directly It is emitted from the light emitting surface 12.
  • the shape of the connection 33 (ie the bottom of the pointed groove 3) of the pointed groove reflection surface 31 and the pointed groove side surface 32 is adapted to the shape of the high beam cut-off line, and is used to form the high beam cut-off line. The shape depends on the difference of the high beam cut-off line. The shape is different. Part of the incident light C is cut off by the connection 33 and then emitted from the light-emitting surface 12 to form a high beam cut-off line.
  • the optical element of the vehicle light in this embodiment is further improved on the basis of the second embodiment, and is used to realize the low beam or auxiliary low beam function.
  • the bottom surface of the light guide channel 14 is provided with a pointed groove 3 recessed upward.
  • the pointed groove 3 includes a pointed groove reflective surface 31 and a pointed groove side surface 32 which are arranged obliquely, which is projected to a large area of the pointed groove reflective surface 31. Part of the light will be totally reflected. Part of the incident light A is reflected by the reflective surface 15 and then reflected to the top surface of the vehicle light optical element 1 via the pointed groove reflective surface 31 and emitted, and part of the incident light B is reflected by the reflective surface 15 and is directly emitted from the light-emitting surface 12.
  • the shape of the junction 33 between the pointed groove reflection surface 31 and the pointed groove side surface 32 (that is, the top of the pointed groove 3) is adapted to the shape of the low-beam cut-off line, and is used to form the low-beam cut-off line.
  • the shape depends on the difference of the low-beam cut-off line. The shape is different. Part of the incident light C is reflected by the reflecting surface 15 and then cut off by the connection 33, and then emitted from the light emitting surface 12 to form a low-beam cutoff line.
  • the optical element of the vehicle light in this embodiment is further improved on the basis of the second embodiment, and is used to realize the high beam or auxiliary high beam function.
  • a downwardly recessed pointed groove 3 is formed on the top surface of the light guide channel 14, and most of the light emitted to the reflecting surface 31 of the pointed groove will be totally reflected.
  • the junction 33 ie, the bottom of the pointed groove 3 between the reflective surface 31 of the pointed groove and the side surface 32 of the pointed groove can cut off the light here and form a high beam cut-off line.
  • the optical element 1 of the present invention includes a low beam part 16 located above and a high beam part 17 located below, both of which are in the form of a flat plate, and both ends away from the light emitting surface 12 are provided.
  • the light-emitting surface 12 can be a convex lens surface, of course, it can also be along the car light An arc-shaped surface extending in the left-right direction of the optical element 1. Specifically, it can be understood in conjunction with Embodiments 9 to 12 of the present invention:
  • the bottom surface of the low beam portion 16 is connected to the top surface of the high beam portion 17, and the bottom surface of the high beam portion 17 is provided with a groove 4, which includes a front side 42 and a rear side oppositely disposed. 41.
  • the two are connected by a connecting surface 43.
  • the front side surface 42 and the rear side surface 41 extend in the left-right direction.
  • the front side surface 42 is closer to the light emitting surface 12 than the rear side surface 41.
  • the connection between the connecting surface 43 and the front side surface 42 is the front edge 44.
  • the shape of the front edge 44 is adapted to the shape of the low-beam cut-off line, and is used to form the low-beam cut-off line.
  • the shape of the front edge 44 varies according to the shape of the low-beam cut-off line.
  • a part of the incident light A will directly exit from the exit light surface 12, and the other part of the incident light B will be cut off by the front edge 44 and exit from the exit light surface 12.
  • the incident light C that enters the condensing structure 11 of the high beam part 17 will be incident on the back side 41, the light will be refracted to the front side 42, and then be refracted to the exit light surface 12 and then emitted, used to generate the high beam light shape, and The above-mentioned low beam light shape is connected.
  • the condensing structure of the ninth embodiment is a condensing cup structure with a cavity, and its outer contour gradually increases from the rear end to the front end.
  • the cavity opening is opened toward the rear end, and the bottom of the cavity is provided with a protrusion protruding toward the rear end.
  • the light-concentrating structure 11 of the tenth embodiment is a protrusion protruding toward the rear end.
  • the specific working principle is the same as that of the ninth embodiment, and will not be repeated here.
  • the rear end of the low beam portion 16 and the high beam portion 17 of the eleventh embodiment are separated, and the front end is connected as a whole.
  • the bottom surface of the low beam portion 16 and the top surface of the high beam portion 17 are provided between There is a wedge-shaped gap 5, the width of the gap 5 gradually shrinks from the rear end to the front end, the front end of the gap 5 is the cut-off portion 51, the shape of which is adapted to the shape of the low-beam cut-off line, and is used to form the low-beam cut-off line.
  • the shape varies according to the shape of the low beam cut-off line.
  • the incident light entering the light-concentrating structure 11 of the low beam portion 16 a part of the incident light will directly exit from the exit light surface 12, and the other part of the incident light will be cut off by the cut-off portion 51 and exit from the exit light surface 12. These two parts of light are used to create a low-beam light shape.
  • the incident light entering from the light-concentrating structure 11 of the high beam part 17 will be directly emitted from the exit light surface 12 to generate the high beam light shape and connect with the low beam light shape.
  • the bottom surface of the low beam portion 16 and the top surface of the high beam portion 17 of the twelfth embodiment are connected, and a wedge-shaped gap 5 is opened at the joint between the two.
  • the width of the gap 5 is determined by the rear end.
  • the front end of the gap 5 is the cut-off portion 51, the shape of which is adapted to the shape of the low-beam cut-off line, and is used to form the low-beam cut-off line.
  • the shape varies according to the shape of the low-beam cut-off line.
  • the specific working principle is the same as that in the eleventh embodiment, and will not be repeated here.
  • the light-concentrating structure 11 has a variety of manifestations.
  • it can be a light-concentrating cup structure with a cavity as shown in Figure 1 in the first embodiment, and its outer contour is from the rear end to the A curved structure with a gradually increasing front end, the cavity opening is opened toward the side away from the light-emitting surface 12, and the bottom of the cavity is provided with a protrusion protruding to the side away from the light-emitting surface 12;
  • the cavity is only a solid body whose outer contour is a curved structure gradually increasing from the rear end to the front end.
  • the shape of the light incident surface can be flat or curved; it can also be as shown in Figure 20 in the tenth embodiment.
  • the shown protrusion is provided at the end of the optical element 1 of the vehicle light.
  • the condensing structure 11 can be arranged in one row or multiple rows, which can well collect and collimate the light emitted by the light source, thereby improving the light utilization rate.
  • the primary optical element and the secondary optical element of the prior art can be made into one piece, which can effectively reduce the number of parts. It is no longer necessary to ensure the relative position accuracy of the two during installation, which can better ensure the stability of the car light shape. It also reduces the size of the car light module;
  • the secondary light distribution can be realized in the integrated optical element, and the flexibility of the light distribution can be improved;
  • the high beam and high beam can be realized simultaneously in the integrated optical component of the vehicle light.
  • the low beam function makes the functions of the optical components of the car light diversified.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
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Abstract

一种车灯光学元件（1），车灯光学元件（1）一端设有多个聚光结构（11），另一端设有出射光面（12），出射光面（12）为向外侧凸出的弧形面。有益之处在于：1、将现有技术的初级光学元件和次级光学元件作成一体件，安装时不再需要保证两者的相对位置精度，能够更好地确保车灯光形的稳定性，同时也减小了车灯模组的尺寸；2、通过开设隔槽（2），实现二次配光；3、通过开设尖槽（3）替代现有的遮光板，简化了车灯模组的结构，减小了整体尺寸；4、通过设置近光部（16）和远光部（17），并在远光部（17）的底面上开设隔槽（4），或是在两者之间开设楔形间隙（5），从而在一体式的车灯光学元件（1）中同时实现远光和近光功能，使得车灯光学元件（1）的功能多样化。

Description

一种车灯光学元件
相关申请的交叉引用
本申请要求2019年10月25日提交的中国专利申请201921809909.6的权益，该申请的内容通过引用被合并于本申请。
技术领域
本发明涉及车辆照明技术领域，尤其涉及一种车灯光学元件。
背景技术
在车灯技术领域，车灯模组一般是指具有塑料或玻璃材质透镜或相当结构的零件作为最终出光元件，且用于汽车前照灯照明的装置。车灯光学元件是车灯模组的重要组成部分，光源射出的光线经车灯光学元件射出后，可形成所需的车灯光形。
现有技术中的车灯模组具有初级光学元件和次级光学元件，需要通过初级光学元件和次级光学元件的两次配光调整得到所需光形，两次配光调整相比只设置一个光学元件的一次配光调整更加灵活，这是因为可以通过调整两个光学元件的配光参数来调整光形，可调的配光参数较多，例如，可以调整初级光学元件的入光面、出射光面以及次级光学元件的入光面或者出射光面。
现有技术中存在以下缺陷：
1、普遍采用具有多个聚光结构的聚光器作为初级光学元件，同时设置透镜作为次级光学元件，这样设置一是使得车灯模组中的部件增加，整体尺寸增大，二是需要保证两个光学元件之间的相对位置准确，对装配精度的要求高；
2、当将聚光器作为近光光学元件使用时，还需在聚光器前方设置遮光板以形成近光截止线，这会导致车灯模组的结构复杂，尺寸增大。
发明内容
针对上述缺陷，本发明要解决的技术问题是提供一种将初级光学元件和次级光学元件集为一体的车灯光学元件，避免装配导致的精度问题。
本发明提供了一种车灯光学元件，所述车灯光学元件一端设有多个聚光结构，另一端设有出射光面，所述出射光面为向外侧凸出的弧形面。
优选地，在所述车灯光学元件上开有贯通的隔槽，所述隔槽包括相对设置的出光面和入光面。
优选地，所述出光面和入光面的延伸方向与所述出射光面的延伸方向相同。
优选地，所述车灯光学元件呈平板型。
优选地，所述车灯光学元件呈弯折型，包括相互连接的聚光通道和导光通道，两者的连接处设有反射面；所述聚光通道的底端设有多个聚光结构，所述导光通道的前端设有出射光面；所述隔槽贯穿所述导光通道。
优选地，所述车灯光学元件上开有纵截面呈V型的尖槽，所述尖槽包括远离所述出射光面的尖槽反射面和靠近所述出射光面的尖槽侧面。
优选地，所述尖槽反射面和尖槽侧面的延伸方向均与所述出射光面的延伸方向相同。
优选地，所述尖槽反射面和尖槽侧面的连接处的形状与光形截止线形状相适应。
优选地，所述车灯光学元件呈平板型。
优选地，所述车灯光学元件呈弯折型，包括相互连接的聚光通道和导光通道，两者的连接处设有反射面；所述聚光通道的底端设有多个聚光结构，所述导光通道的前端设有出射光面；所述尖槽开设在所述导光通道上。
优选地，所述出射光面为凸透镜面或者为沿左右方向延伸的弧形面。
优选地，所述车灯光学元件包括位于上方的近光部和位于下方的远光部，两者远离所述出射光面的一端均设有多个聚光结构，另一端上下连为一体并共同形成所述出射光面。
优选地，所述远光部的底面开有凹槽，所述凹槽包括相对设置的前侧面和后侧面，两者之间通过连接面相连接。
优选地，所述近光部和远光部之间设有呈楔形的间隙，所述间隙的宽度由后端向前端逐渐收缩。
优选地，所述聚光结构为具有凹腔的聚光杯结构，其外部轮廓为由后端向前端逐渐增大的曲面状结构，所述凹腔开口朝向后端开设，所述凹腔底部设有向后端凸出的凸起；或者，所述聚光结构为外部轮廓为由后端向前端逐渐增大的曲面状结构的实心体，其入光面为平面或者曲面；或者所述聚光结构为向后端凸出的凸起。
本发明的有益之处在于：
1、将现有技术的初级光学元件和次级光学元件作成一体件，可以有效减少零部件的数量，安装时不再需要保证两者的相对位置精度，能够更好地确保车灯光形的稳定性，同时也减小了车灯模组的尺寸；
2、通过开设隔槽，可以在一体的光学元件中实现二次配光，提高配光的灵活性；
3、通过开设尖槽替代现有的遮光板，既实现了近光或远光截止线，也简化了车灯模组的结构，减小了整体尺寸；
4、通过设置近光部和远光部，并在远光部的底面上开设隔槽，或是在两者之间开设楔形间隙，从而在一体式的车灯光学元件中同时实现远光和近光功能，使得车灯光学元件的功能多样化。
附图说明
图1是实施例一的立体图；
图2是实施例一的光路图；
图3是实施例二的立体图一；
图4是实施例二的立体图二；
图5是实施例二的光路图；
图6是实施例三的立体图一；
图7是实施例三的立体图二；
图8是实施例三的光路图；
图9是实施例四的立体图；
图10是实施例四的光路图；
图11是实施例五的立体图一；
图12是实施例五的立体图二；
图13是实施例五的剖面图和光路图；
图14是实施例六的光路图；
图15是实施例七的光路图；
图16是实施例八的光路图；
图17是实施例九的立体图；
图18是实施例九的光路图；
图19是实施例十的立体图；
图20是实施例十的光路图；
图21是实施例十一的立体图；
图22是实施例十一的光路图；
图23是实施例十二的立体图；
图24是实施例十二的光路图。
元件标号说明：
1     车灯光学元件
11    聚光结构
12    出射光面
13    聚光通道
14    导光通道
15    反射面
16    近光部
17    远光部
2     隔槽
21    出光面
22    入光面
3     尖槽
31    尖槽反射面
32    尖槽侧面
33    连接处
4     凹槽
41    后侧面
42    前侧面
43    连接面
44    前边缘
5     间隙
51    截止部
具体实施方式
下面结合附图对本发明的具体实施例作进一步详细说明。这些实施例仅用于说明本发明，而并非对本发明的限制。
在本发明的描述中，需要说明的是，术语“纵向”、“横向”、“前”、“后”、“左”、“右”、“竖直”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
此外，在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在以下的描述中，以图2中的附图作为方向的参考基础，沿视图纸面朝右、出射光面12所在一侧为前方向，沿视图纸面朝左为后方向，沿视图纸面向上为上方向，沿视图纸面向下为下方向，垂直于视图纸面朝里为左方向，垂直于视图纸面朝外为右方向。附图中的所有单点划线代表的是光轴。
本发明提供了一种车灯光学元件，该车灯光学元件1采用透光材料制成，一端设有多个聚光结构11，另一端设有出射光面12，出射光面12为向外侧凸出的弧形面，该出射光面12可以为如图1-图16所示的沿车灯光光学元件1的左右方向延伸的弧形面，或者，为如图17-图22所示的凸透镜面，这里的凸透镜面指的是凸透镜的出光面截线经回转后得到的回转面。本发明将现有技术中的初级光学元件和次级光学元件作成一体，安装时不再需要保证两者的相对位置精度，能够更好地确保光形的稳定性，同时也减少了零部件的数量，有利于减小车灯模组的尺寸。具体地，可结合本发明的实施例一和二来理解：
实施例一
参见图1和图2，车灯光学元件1呈平板型，入射光线由聚光结构11进入车灯光学元件1后经出射光面12后射出并投射在车辆的前方。
实施例二
参见图3-5，车灯光学元件1呈弯折型，包括相互连接的聚光通道13和导光通道14，两者的连接处设有反射面15。聚光通道13大致沿上下方向延伸，底端设有多个聚光结构11，导光通道14大致沿前后方向延伸，前端设有出射光面12。聚光结构11能够接收入射光线并聚光，聚光后的光线进入聚光通道13经反射面15反射后由导光通道14端部的出射光面12射出并投射在车辆的前方。射至反射面15的大部分光线均发生全反射。
在该实施例的车灯光学元件中，将出射光面12设置为向外侧凸出的弧形面，即将现有技术中的初级光学元件和次级光学元件作成一体，不需要保证两者的相对位置精度，能够更好地确保光形的稳定性，同时，设置为弯折型有利于缩短车灯光学元件1在前后方向上的尺寸，可以使得车灯模组的尺寸进一步减小。
为了在一体设置的车灯光学元件的基础上更好地调整出射光形，本发明在车灯光学元件1上开有贯通的隔槽2，隔槽2包括相对设置的出光面21和入光面22，优选地，出光面21和入光面22的延伸方向与出射光面12的延伸方向相同，当然，也可以根据实际需要，延伸方向不同。通过隔槽2将一体的车灯光学元件1分成前后两个光学部，位于前侧的光学部对应现有的次级光学元件，位于后侧的光学部则对应现有的初级光学元件，使得车灯光学元件1在具有一体件的优势的同时还能实现二次配光。其中，隔槽2可以上下贯通和/或左右贯通，隔槽2的出光面21和入光面22可以有多种形式，如平面、凹面或凸面等。具体地，可结合本发明的实施例三和实施例四理解：
实施例三
如图6-8所示，车灯光学元件1呈平板型，隔槽2为长方体槽，和出射光面12均沿车灯光学元件1的左右方向延伸。入射光线由聚光结构11进入车灯光学元件1，依次经出光面21、入光面22和出射光面12后射出并投射在车辆的前方。
实施例四
该实施例的车灯光学元件是在实施例二的基础上作了进一步改进，参见图9和图10，隔槽2上下贯穿导光通道14，与出射光面12的延伸方向相同。入射光线由聚光结构11进入聚光通道13，经反射面15反射后进入导光通道14，然后依次经出光面21、入光面22和出射光面12射出并投射在车辆的前方。
实施例三和实施例四在具有实施例一/二的一体件的优势外，还能够通过隔槽2实现二次配光，进而获得理想的光形。
为了能够在移除遮光板的同时形成近光或远光截止线，优选地，本发明的车灯光学元件1上开有纵截面呈V型的尖槽3，尖槽3包括远离出射光面12的尖槽反射面31和靠近出射光面12的尖槽侧面32，尖槽反射面31和尖槽侧面32的延伸方向均与出射光面12的延伸方向相同，同样也可以不同。尖槽反射面31和尖槽侧面32的连接处33的形状与近光或远光截止线形状相适应，用于形成近光或远光截止线，其形状根据光形截止线的不同形状而不同，部分入射光线经连接处33截止再由出射光面12射出，形成近光或远光截止线，从而实现了移除遮光板、减小车灯模组尺寸的目的。本领域技术人员可以根据需要调整尖槽反射面31和尖槽侧面32的倾斜角度。具体地，可结合本发明的实施例五至八理解：
实施例五
如图11-13所示，该实施例的车灯光学元件1呈平板型，是在实施例一的基础上作出的进一步改进，用于实现近光或者辅助近光功能。在其底面上开设有向上凹陷的尖槽3，尖槽3包括倾斜设置的尖槽反射面31和竖直 设置的尖槽侧面32，射至尖槽反射面31的大部分光线会发生全反射。其中，部分入射光线A射至尖槽反射面31，经反射后由车灯光学元件1的顶面射出，部分入射光线B射至尖槽反射面31，经反射至出射光面12射出。尖槽反射面31和尖槽侧面32的连接处33(即尖槽3的顶部)的形状与近光截止线形状相适应，用于形成近光截止线，其形状根据近光截止线的不同形状而不同，部分入射光线C经连接处33截止再由出射光面12射出，形成近光截止线。
实施例六
如图14所示，该实施例的车灯光学元件1是在实施例一的基础上作出的进一步改进，用于实现远光或者辅助远光功能。在车灯光学元件1的顶面上开设有向下凹陷的尖槽3，部分入射光线A射至尖槽反射面31，经反射后由车灯光学元件1的底面射出，部分入射光线B直接从出射光面12射出。尖槽反射面31和尖槽侧面32的连接处33(即尖槽3的底部)的形状与远光截止线形状相适应，用于形成远光截止线，其形状根据远光截止线的不同形状而不同，部分入射光线C经连接处33截止再由出射光面12射出，形成远光截止线。
实施例七
该实施例的车灯光学元件是在实施例二的基础上作了进一步改进，用于实现近光或者辅助近光功能。如图15所示，在导光通道14的底面上开有向上凹陷的尖槽3，尖槽3包括倾斜设置的尖槽反射面31和尖槽侧面32，射至尖槽反射面31的大部分光线会发生全反射。其中，部分入射光线A经反射面15反射后又经尖槽反射面31反射至车灯光学元件1的顶面并射出，部分入射光线B经反射面15反射后直接由出射光面12射出。尖槽反射面31和尖槽侧面32的连接处33(即尖槽3的顶部)的形状与近光截止线形状相适应，用于形成近光截止线，其形状根据近光截止线的不同形状而不同，部分入射光线C经反射面15反射后经连接处33截止，再由出射光面 12射出，形成近光截止线。
实施例八
该实施例的车灯光学元件是在实施例二的基础上作了进一步改进，用于实现远光或者辅助远光功能。如图16所示，在导光通道14的顶面上开有向下凹陷的尖槽3，射至尖槽反射面31的大部分光线会发生全反射。尖槽反射面31和尖槽侧面32的连接处33(即尖槽3的底部)可使光线在此处截止并形成远光截止线。
为了实现远近光一体模式，优选地，本发明车灯光学元件1包括位于上方的近光部16和位于下方的远光部17，两者均呈平板型，远离出射光面12的一端均设有多个聚光结构11，另一端上下连为一体并共同形成上述出射光面12，如图17-图22所示，该出射光面12可以为凸透镜面，当然，也可以为沿车灯光光学元件1的左右方向延伸的弧形面。具体地，可结合本发明的实施例九至十二理解：
实施例九
如图17和图18所示，近光部16的底面和远光部17的顶面相连接，远光部17的底面开有凹槽4，凹槽4包括相对设置的前侧面42和后侧面41，两者之间通过连接面43相连接。前侧面42和后侧面41沿左右方向延伸，优选地，前侧面42相对后侧面41更靠近出射光面12。连接面43与前侧面42的连接处为前边缘44，前边缘44的形状与近光截止线形状相适应，用于形成近光截止线，其形状根据近光截止线的不同形状而不同。其中，由近光部16的聚光结构11进入的入射光线中，一部分入射光线A会直接从出射光面12射出，另一部分入射光线B经前边缘44截止，由出射光面12射出。这两部分光线A和B用于产生近光光形。由远光部17的聚光结构11进入的入射光线C则会射至后侧面41，光线折射至前侧面42，再折射至出射光面12后射出，用于产生远光光形，并与上述近光光形衔接。
实施例十
实施例十与实施例九的区别在于：如图17和图18所示，实施例九的聚光结构为具有凹腔的聚光杯结构，其外部轮廓为由后端向前端逐渐增大的曲面状结构，凹腔开口朝向后端开设，凹腔底部设有向后端凸出的凸起。结合图19和图20可知，实施例十的聚光结构11为向后端凸出的凸起。其具体工作原理和实施例九相同，在此不再赘述。
实施例十一
如图21和图22所示，实施例十一的近光部16和远光部17的后端分开，前端连为一体，近光部16的底面和远光部17的顶面之间设有呈楔形的间隙5，间隙5的宽度由后端向前端逐渐收缩，间隙5的最前端即为截止部51，其形状与近光截止线形状相适应，用于形成近光截止线，其形状根据近光截止线的不同形状而不同。由近光部16的聚光结构11进入的入射光线中，一部分入射光线会直接从出射光面12射出，另一部分入射光线经截止部51截止，由出射光面12射出。这两部分光线用于产生近光光形。由远光部17的聚光结构11进入的入射光线则会直接由出射光面12射出，用于产生远光光形，并与近光光形衔接。
实施例十二
如图23和图24所示，实施例十二的近光部16的底面和远光部17的顶面相连接，两者的连接处开有呈楔形的间隙5，间隙5的宽度由后端向前端逐渐收缩，间隙5的最前端即为截止部51，其形状与近光截止线形状相适应，用于形成近光截止线，其形状根据近光截止线的不同形状而不同。其具体工作原理与实施例十一相同，在此不再赘述。
在上述实施例一至十二中，聚光结构11有多种表现形式，例如，可以是如实施例一中图1所示的具有凹腔的聚光杯结构，其外部轮廓为由后端向前端逐渐增大的曲面状结构，其凹腔开口朝向远离出射光面12的一侧开设，凹腔底部设有向远离出射光面12的一侧凸出的凸起；还可以是内部不开设凹腔，其仅为外部轮廓为由后端向前端逐渐增大的曲面状结构的实心 体，其入光面的形状可以为平面，也可以为曲面；还可以是如实施例十中图20所示的设置在车灯光学元件1端部的凸起。该聚光结构11可以设置一排，也可以设置多排，其可以将光源发出的光线很好地收集、准直，从而提高光线利用率。
综上所述，本发明的有益之处在于：
1、将现有技术的初级光学元件和次级光学元件作成一体件，可以有效减少零部件的数量，安装时不再需要保证两者的相对位置精度，能够更好地确保车灯光形的稳定性，同时也减小了车灯模组的尺寸；
2、通过开设隔槽，可以在一体的光学元件中实现二次配光，提高配光的灵活性；
3、通过开设尖槽替代现有的遮光板，既实现了近光或远光截止线，也简化了车灯模组的结构，减小了整体尺寸。
4、通过设置近光部和远光部，并在远光部的底面上开设隔槽，或是在两者之间开设楔形间隙，从而在一体式的车灯光学元件中同时实现远光和近光功能，使得车灯光学元件的功能多样化。
以上所述仅是本发明的优选实施例，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和替换，这些改进和替换也应视为本发明的保护范围。

Claims (7)

  1. 一种车灯光学元件，其特征在于，所述车灯光学元件(1)一端设有多个聚光结构(11)，另一端设有出射光面(12)，所述出射光面(12)为向外侧凸出的弧形面；所述车灯光学元件(1)包括位于上方的近光部(16)和位于下方的远光部(17)，两者远离所述出射光面(12)的一端均设有多个所述聚光结构(11)，另一端上下连为一体并共同形成所述出射光面(12)；所述远光部(17)的底面开有凹槽(4)，所述凹槽(4)包括相对设置的前侧面(42)和后侧面(41)，两者之间通过连接面(43)相连接。
  2. 根据权利要求1所述的车灯光学元件，其特征在于，所述出射光面(12)为凸透镜面或者为沿左右方向延伸的弧形面。
  3. 根据权利要求1所述的车灯光学元件，其特征在于，所述聚光结构(11)为具有凹腔的聚光杯结构，其外部轮廓为由后端向前端逐渐增大的曲面状结构，所述凹腔开口朝向后端开设，所述凹腔底部设有向后端凸出的凸起；或者，所述聚光结构(11)为外部轮廓为由后端向前端逐渐增大的曲面状结构的实心体，其入光面为平面或者曲面；或者所述聚光结构(11)为向后端凸出的凸起。
  4. 根据权利要求1所述的车灯光学元件，其特征在于，所述近光部(16)的底面和所述远光部(17)的顶面相连接。
  5. 根据权利要求1所述的车灯光学元件，其特征在于，所述前侧面(42)和所述后侧面(41)沿左右方向延伸。
  6. 根据权利要求1所述的车灯光学元件，其特征在于，所述连接面(43)与所述前侧面(42)的连接处为前边缘(44)，所述前边缘(44)的形状与近光截止线形状相适应。
  7. 根据权利要求1所述的车灯光学元件，其特征在于，所述近光部(16)和所述远光部(17)均呈平板型。
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