WO2020244229A1 - 车灯光学元件及车辆前照灯 - Google Patents

车灯光学元件及车辆前照灯 Download PDF

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Publication number
WO2020244229A1
WO2020244229A1 PCT/CN2020/070935 CN2020070935W WO2020244229A1 WO 2020244229 A1 WO2020244229 A1 WO 2020244229A1 CN 2020070935 W CN2020070935 W CN 2020070935W WO 2020244229 A1 WO2020244229 A1 WO 2020244229A1
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WIPO (PCT)
Prior art keywords
light
optical element
emitting portion
vehicle
incident
Prior art date
Application number
PCT/CN2020/070935
Other languages
English (en)
French (fr)
Inventor
祝贺
张大攀
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 US17/596,007 priority Critical patent/US20220316676A1/en
Priority to JP2021571902A priority patent/JP7340041B2/ja
Priority to EP20819385.4A priority patent/EP3982035A4/en
Publication of WO2020244229A1 publication Critical patent/WO2020244229A1/zh

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    • 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
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/0408—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/068—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by mechanical means
    • B60Q1/0683—Adjustable by rotation of a screw
    • B60Q1/0686—Adjustable by rotation of a screw using a position indicator mounted on the headlight and permanently attached thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • 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]
    • F21S41/151—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
    • F21S41/10—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
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • 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
    • 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
    • F21S41/27—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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • 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
    • 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
    • F21S41/47—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • 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
    • F21W2102/20—Illuminance distribution within the emitted light
    • 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
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • This application relates to the technical field of vehicle headlights, for example, to a vehicle light optical element and vehicle headlights.
  • the optical element of the car light is an important part of the lighting module of the car light.
  • the optical element of the car light of the related technology generally includes a primary optical element and a secondary optical element. The two are arranged at intervals in the front and rear directions of the vehicle, and are fixedly installed through their respective brackets. On the radiator, such a car light optical element will have two installation errors during installation, which will affect the overall installation accuracy of the car light optical element, thereby affecting the shape of the car light.
  • the optical elements of related art lamps require a longer length of the primary optical element in the front-to-rear direction.
  • the secondary optical element is also large in size due to the coordination of the primary optical element for light distribution.
  • the distance between the two in the front and rear direction is relatively large, so that the size of the vehicle lamp lighting module in the front and rear direction is large, and accordingly its volume is also large.
  • the technical solution of the related technology is equipped with at least two optical elements, which makes the installation of the lighting module of the car lamp more complicated. It is necessary to ensure the position accuracy between the various parts, especially the relative position accuracy between the two optical elements, to obtain the ideal Car light shape. In order to locate and install the primary optical element and the secondary optical element, it is also necessary to provide respective mounting brackets and other parts, which makes the structure of the vehicle lighting module more complicated.
  • the optical system precision of the related art car light optical element is low. On the one hand, it is affected by the manufacturing accuracy of the primary optical element and the secondary optical element itself, and on the other hand, it is affected by the relative position accuracy of the two and the light source, making the car light optical The accuracy of the optical system of the component is difficult to guarantee.
  • the present application provides a vehicle lamp optical element and a vehicle headlamp, which have a simple structure, small size, and convenient installation, while the accuracy of the optical system can be greatly improved.
  • An optical element for a vehicle lamp includes a light incident part, a light transmission part, and a light output part that are sequentially connected and integrally formed.
  • the light incident part is configured to condense light from a light source onto the light transmission part.
  • the longitudinal cross-sectional area of the light portion gradually increases along the optical axis, and the light emitting portion is convexly formed in a direction away from the light incident portion and is configured to refract the light emitted through the light passing portion, wherein the passing light
  • the longitudinal section of the part is a plane perpendicular to the optical axis.
  • the light incident part is convexly formed in a direction away from the light passing part.
  • the light incident portion has a light incident surface, and the light incident surface is an arc-shaped surface protruding in a direction away from the light passing portion.
  • the light incident surface includes a condensing cup, and the side of the condensing cup away from the light passing part is flat, or the side of the concentrating cup away from the light passing part is provided with a groove and the groove is A protrusion is provided in a direction away from the light passing part.
  • the number of the light incident parts is at least two, and the at least two light incident parts are arranged in rows and columns, and each of the light incident parts is arranged to face one of the light sources.
  • the longitudinal section of the light-passing portion is rectangular, and the four side surfaces of the light-passing portion except for the end faces connected to the light-incoming portion and the light-emitting portion are all inclined surfaces.
  • the light-emitting portion includes a first light-emitting portion and a second light-emitting portion, one end surface of the first light-emitting portion is connected with the light-passing portion, and the other end surface is connected with the second light-emitting portion, the first light-emitting portion
  • the other end surface of the second light-emitting portion is a flat surface as a light-emitting surface, and the end surface of the second light-emitting portion away from the first light-emitting portion is a light-emitting surface and a curved surface.
  • the four sides of the first light emitting portion except for the two end faces are all inclined surfaces, the longitudinal section of the first light emitting portion perpendicular to the optical axis is rectangular, and the longitudinal cross-sectional area of the first light emitting portion is along The direction of the optical axis gradually decreases.
  • the upper and lower sides of the second light-emitting portion are both inclined surfaces, and the inclination angle of the upper side of the first light-emitting portion is the same as the inclination angle of the upper side of the second light-emitting portion.
  • the inclination angle is the same as the inclination angle of the lower side surface of the second light emitting portion.
  • the width of any longitudinal section of the first light emitting portion is greater than the height of the longitudinal section.
  • the upper or lower part of the light-passing part is provided with an inclined groove
  • the inclined groove includes an inclined surface close to the light entrance part and a vertical surface close to the light output part, and the intersection line of the inclined surface and the vertical surface
  • the shape matches the shape of the light cut-off line, and the inclined surface is inclined toward the lower or upper portion of the light-transmitting portion along the optical axis direction, so that the light hitting the inclined surface is totally reflected.
  • the height of the longitudinal section connecting the light-transmitting portion and the light-emitting portion is smaller than the height of the longitudinal cross-section connecting the light-emitting portion and the light-transmitting portion, and the upper or lower surface of the light-transmitting portion is provided with a total reflection surface
  • the total reflection surface and the vertical wall surface protruding from the light-passing portion on the light exit portion form a stepped portion, and the shape of the intersection line of the total reflection surface and the vertical wall surface is the same as the shape of the light cut-off line.
  • the reflecting surface is configured to totally reflect the light incident on the totally reflecting surface.
  • a vehicle headlamp includes the optical element of the vehicle light described in any one of the above solutions, and further includes a circuit board and a radiator, the optical element of the vehicle light is arranged on one side of the circuit board, and the radiator is installed On the other side of the circuit board, a light source is arranged on the circuit board, and the light source is arranged directly opposite to the light incident part.
  • the optical component of the vehicle light provided in this application, by integrating the primary optical element and the secondary optical element of the related technology, saves one optical element.
  • the optical element of the vehicle light has a simple structure, small volume, and only one installation is required during installation. Yes, the secondary installation error is avoided, the overall installation accuracy of the optical element of the vehicle light and the accuracy of the optical system are improved, and an ideal vehicle light shape can be obtained.
  • Fig. 1 is a schematic diagram of an optical element of a vehicle lamp provided by an embodiment of the present application
  • FIG. 2 is a cross-sectional view in one direction of an optical element of a vehicle lamp provided by an embodiment of the present application
  • FIG. 3 is a cross-sectional view in another direction of an optical element of a vehicle lamp provided by an embodiment of the present application;
  • FIG. 4 is a schematic diagram of an optical element of a vehicle lamp provided by another embodiment of the present application.
  • FIG. 5 is a schematic diagram of a vehicle light optical element with inclined grooves according to another embodiment of the present application.
  • FIG. 6 is a schematic diagram of a stepped part of an optical element of a vehicle lamp provided by another embodiment of the present application.
  • FIG. 7 is a schematic diagram of a vehicle headlamp provided by an embodiment of the present application.
  • Fig. 8 is a cross-sectional view of a vehicle headlamp provided by an embodiment of the present application.
  • orientation words used such as “center”, “upper”, “lower”, “left”, “right”, “vertical” “,” “horizontal”, “inner”, “outer”, “front”, “rear” and other indications of the orientation or positional relationship are based on the orientation of the vehicle under the normal driving state of the vehicle after the optical element of the lamp of this application is installed on the vehicle The indicated position or positional relationship.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. Among them, the terms “first position” and “second position” are two different positions.
  • connection should be interpreted broadly unless otherwise clearly specified and limited.
  • connection can be a fixed connection or a detachable connection.
  • Connection can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection can be a fixed connection or a detachable connection.
  • connection can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • a vehicle light optical element 1 for vehicle lights includes a light incident portion 11, a light transmission portion 12, and a light output portion 13 that are sequentially connected and integrally formed.
  • the light incident portion 11 is configured to The light from the light source 21 is condensed onto the light-transmitting portion 12, the longitudinal cross-sectional area of the light-transmitting portion 12 gradually increases along the optical axis direction, and the light-emitting portion 13 is convexly arranged in a direction away from the light-incident portion 11 and is configured to be refracted through Light rays emitted by the light unit 12.
  • the optical axis is the axis extending along the front-rear direction of the light optical element 1 through the focal point of the light emitting portion 13, and the optical axis direction is defined as the direction along the optical axis and pointing from the light incident portion 11 to the light emitting portion 13; the longitudinal section is defined Is a plane perpendicular to the optical axis
  • the vehicle light optical element 1 of this embodiment is a transparent plastic vehicle light optical element, and the material of the plastic vehicle light optical element is polymethyl methacrylate (PMMA) or polycarbonate (PC) .
  • the vehicle light optical element 1 may also be a silicone vehicle light optical element or a glass vehicle light optical element, and the material of the vehicle light optical element 1 is specifically selected and set according to actual needs.
  • the light-incident portion 11 is convexly formed in a direction away from the light-transmitting portion 12, and the light-incident portion 11 has a light-incident surface 111, and the light-incident surface 111 is an arc-shaped surface convexly protruding in a direction away from the light-transmitting portion 12 .
  • the light incident portion 11 of this embodiment is a curved light incident portion, and correspondingly, the light incident surface 111 is an arc-shaped surface, and the number of the light incident portions 11 is five.
  • the light incident parts 11 are sequentially connected in a row, and each light incident part 11 is arranged directly opposite to a light source 21.
  • the number of light incident parts 11 is not limited to five in this embodiment, and may be other numbers than five, and the distribution of light incident parts 11 is not limited to this embodiment.
  • One row in the example can also be at least two rows, which can be set according to actual needs.
  • each light incident part 11 may be arranged directly opposite to a light source 21.
  • the optical element 1 of the vehicle lamp provided in this embodiment, by integrating the primary optical element and the secondary optical element of the related technology, saves one optical element, has a simple structure and a small volume, and only needs to be installed once during installation.
  • the secondary installation error is avoided, the overall installation accuracy of the vehicle light optical element 1 and the accuracy of the optical system are improved, and an ideal vehicle light shape can be obtained.
  • the longitudinal section of the light-transmitting portion 12 of this embodiment is rectangular.
  • the four sides of the light-transmitting portion 12 except for the end faces connected to the light-incoming portion 11 and the light-emitting portion 13 are all inclined surfaces, and the oblique direction makes the light-transmitting portion
  • the longitudinal cross-sectional area of 12 gradually increases along the optical axis direction, so that more light enters the light exit portion 13 through the light-passing portion 12, and the utilization rate of the light is improved, thereby meeting the requirements of the vehicle light shape.
  • the light emitting portion 13 of this embodiment includes a first light emitting portion 131 and a second light emitting portion 132.
  • One end surface of the first light emitting portion 131 is connected to the light transmitting portion 12, and the other end surface of the first light emitting portion 131 Connected to the second light-emitting portion 132, the other end surface of the first light-emitting portion 131 serves as a light-emitting surface and is a flat surface, and the end surface of the second light-emitting portion 132 away from the first light-emitting portion 131 is a light-emitting surface and is a curved surface.
  • the four sides of the first light emitting portion 131 except for the two end surfaces connected to the light transmitting portion 12 and the second light emitting portion 132 are all inclined surfaces.
  • the longitudinal section of the first light emitting portion 131 is rectangular, and the inclined direction of the inclined surface is such that The longitudinal cross-sectional area of the first light-emitting portion 131 gradually decreases along the optical axis direction, so as to converge the light rays emitted to the side of the first light-emitting portion in a direction close to the optical axis, so as to meet the requirements of the vehicle light shape.
  • the light-emitting surface of the second light-emitting portion 132 is a curved surface that is convex in a direction away from the light-incident surface 111 and is configured to refract the light emitted by the light-transmitting portion 12.
  • the width of any longitudinal section of the first light emitting portion 131 is greater than the height of the longitudinal section, wherein the width of the longitudinal section of the first light emitting portion 131 is the length of the rectangle, and the height of the longitudinal section of the first light emitting portion 131 is The width of the rectangle is rectangular, so that the first light emitting portion 131 has a narrow and long appearance to meet the market demand for small car lamp modules and small aperture lens light emitting surfaces.
  • the ratio of the length to the width of the rectangular longitudinal section is 2.5. In other embodiments, the ratio of the length to the width of the rectangle may also be any value other than 2.5 in this embodiment and greater than 1, which is specifically set according to actual needs.
  • another embodiment of the present application provides a vehicle light optical element for a vehicle light
  • the light incident portion 11 may also be a light collecting cup
  • the light collecting cup is provided on a side away from the light transmitting portion 12
  • the grooves are provided with protrusions away from the light-transmitting portion 12, so as to better converge the light.
  • the condensing cup has a better condensing effect, it is less used due to its complicated structure and difficult processing.
  • the surface of the condensing cup away from the light-transmitting portion 12 can also be flat, and the flat light-incident surface 111 receives the light from the light source 21 and converges the light onto the light-transmitting portion 12.
  • the lower portion of the light transmitting portion 12 is provided with an inclined groove 121, and the inclined groove 121 is arranged along the optical axis direction.
  • the inclined groove 121 is a pointed groove
  • the wall surface of the inclined groove 121 includes an inclined surface 1211 close to the light incident portion 11 and a vertical surface 1212 close to the light output portion 13.
  • the inclined surface 1211 is close to the light transmitting portion 12 along the optical axis.
  • the upper direction of the inclined surface is inclined, and the inclined surface 1211 is a total reflection surface, and is configured to totally reflect the light incident on the inclined surface 1211.
  • the inclined groove 121 surrounded by the inclined surface 1211 and the vertical surface 1212 has simple processing technology.
  • the shape of the intersection line between the inclined surface 1211 and the vertical surface 1212 matches the shape of the low beam cut-off line, so that the light entering the light passing portion 12 is cut off by the intersection line and then emitted from the light emitting portion 13 to form the low beam cut-off line .
  • the wall surface of the inclined groove 121 close to the light emitting portion 13 can also be designed as an inclined surface, and the specific structure is set according to actual needs.
  • the inclined groove 121 can also be opened in the upper part of the light transmitting part 12, and the inclined groove 121 is arranged along the optical axis direction.
  • the inclined groove 121 is a pointed groove, and the wall surface of the inclined groove 121 includes an inclined surface 1211 close to the light incident portion 11 and a vertical surface 1212 close to the light output portion 13.
  • the inclined surface 1211 is close to the light transmitting portion 12 along the optical axis.
  • the lower part of the slanted surface is inclined, and the inclined surface 1211 is configured to totally reflect the light incident on the inclined surface 1211.
  • the shape of the intersection line of the inclined surface 1211 and the vertical surface 1212 matches the shape of the high beam cut-off line, so that the light entering the light passing portion 12 is cut off by the intersection line and then emitted by the light emitting portion 13 to form a far Light cut-off line.
  • the high beam cut-off line may not be provided, that is, the inclined groove 121 on the upper part of the light transmitting portion 12 may not be provided.
  • the height of the longitudinal section at the junction of the light-transmitting portion 12 and the light-emitting portion 13 is smaller than the height of the longitudinal section at the junction of the light-emitting portion 13 and the light-transmitting portion 12, that is, on the upper surface of the light-transmitting portion 12.
  • the lower surface is provided with a total reflection surface 1221, as shown in FIG. 6, when the total reflection surface 1221 is provided on the upper surface of the light-transmitting portion 12, the vehicle light optical element 1 forms a high beam or auxiliary high beam, and the total reflection surface 1221 is provided When on the lower surface of the light-transmitting portion 12, the vehicle light optical element 1 forms a low beam or an auxiliary low beam.
  • the total reflection surface 1221 and the wall surface of the light emitting portion 13 protruding from the light transmission portion 12 form a step portion 122, and the shape of the intersection line of the two matches the shape of the cut-off line, and the total reflection surface 1221 is configured to make the entire The light from the reflective surface 1221 is totally reflected.
  • the above cut-off line is the light-dark cut-off line defined in the relevant laws and regulations of car lamps.
  • the light-dark cut-off line is the light beam projected on the light distribution screen, visually felt The dividing line between light and dark.
  • the shape of the intersecting line can be set differently according to the different cut-off lines.
  • the inclined groove 121 or the stepped portion 122 added to the optical element 1 of the vehicle light can replace the light shielding plate provided independently of the optical element 1 of the vehicle light in the related art. Compared with the related art, the structure of the optical element 1 of the vehicle light of the present application is Even simpler.
  • the vehicle light includes the vehicle light optical element 1, the circuit board 2 and the radiator 3 described in this embodiment, and the vehicle light optical element 1 It is installed on one side of the circuit board 2 through a mounting frame (not shown in the figure), and the heat sink 3 is installed on the other side of the circuit board 2.
  • the heat sink 3 is used to dissipate the heat generated by the circuit board 2. 2 is provided with a light source 21, and the light source 21 is arranged directly opposite the light incident surface 111.

Abstract

一种车灯光学元件及车辆前照灯。其中车灯光学元件包括依次连接且一体成型为车灯光学元件的入光部（11）、通光部（12）及出光部（13），入光部（11）被配置为能够将光源的光线聚射至通光部（12）上，通光部（12）的纵截面面积沿光轴方向逐渐增大，出光部（13）朝向远离入光部（11）的方向凸设且被配置为能够折射经通光部（12）射出的光线。

Description

车灯光学元件及车辆前照灯
本申请要求在2019年06月05日提交中国专利局、申请号分别为201910488336.X和201920859938.7，2019年08月08日提交中国专利局、申请号为201910730411.9，以及2019年08月22日提交中国专利局、申请号为201921372161.8的中国专利申请的优先权，上述各申请的内容通过引用结合在本申请中。
技术领域
本申请涉及车辆前照灯技术领域，例如涉及一种车灯光学元件及车辆前照灯。
背景技术
车灯光学元件是车灯照明模块的重要组成部分，相关技术的车灯光学元件一般包括初级光学元件和次级光学元件，两者在车辆的前后方向间隔设置，并分别通过各自的支架固定安装在散热器上，这样的车灯光学元件在安装时就会产生两次安装误差，影响车灯光学元件的整体安装精度，从而影响车灯光形。
相关技术的车灯光学元件为了使提高光线的利用率，初级光学元件在前后方向上的长度较长，次级光学元件也因要与初级光学元件配合进行配光，其尺寸也很大，并且为了形成所需光形，两者在前后方向上的距离较大，使得车灯照明模块在前后方向上的尺寸很大，相应地其体积也很大。
相关技术的技术方案因为设置有至少两个光学元件，使得车灯照明模块的安装比较复杂，需要保证各个零件之间的位置精度，尤其是两个光学元件之间的相对位置精度，以得到理想的车灯光形。为了定位、安装初级光学元件和次级光学元件，还需要设置各自的安装支架等零件，使得车灯照明模块的结构较复杂。
相关技术的车灯光学元件的光学系统精度低，一方面受初级光学元件和次级光学元件本身零件的制造精度影响，另一方面受二者和光源的相对位置精度的影响，使得车灯光学元件的光学系统精度难以保证。
现有的车灯光学元件，为了提高其光学系统精度，需要保证初级光学元件 和次级光学元件的制造精度高、定位准确及安装精度高。
发明内容
基于以上所述，本申请提供一种车灯光学元件及车辆前照灯，结构简单、体积小、安装便捷，同时光学系统精度可以得到大幅提升。
一种车灯光学元件，包括依次连接且一体成型的入光部、通光部及出光部，所述入光部被配置为将光源的光线聚射至所述通光部上，所述通光部的纵截面面积沿光轴方向逐渐增大，所述出光部朝向远离所述入光部的方向凸设且被配置为折射经所述通光部射出的光线，其中，所述通光部的纵截面为与所述光轴垂直的面。
所述入光部朝向远离所述通光部的方向凸设。
所述入光部上具有入光面，所述入光面为朝向远离所述通光部的方向凸设的弧状面。
所述入光面包括聚光杯，所述聚光杯远离所述通光部的一面为平面，或者所述聚光杯远离所述通光部的一面设有凹槽且所述凹槽内设有向远离所述通光部方向设置的凸起。
所述入光部的个数为至少两个，且所述至少两个入光部呈行列排布，每个所述入光部设置为正对一个所述光源。
所述通光部的纵截面为矩形，且所述通光部上除与所述入光部和所述出光部相连的端面之外的四个侧面均为斜面。
所述出光部包括第一出光部和第二出光部，所述第一出光部的一端面与所述通光部连接，另一端面与所述第二出光部连接，所述第一出光部的另一端面作为出光面且为平面，所述第二出光部远离所述第一出光部的端面作为出光面且为曲面。
所述第一出光部除两个端面之外的四个侧面均为斜面，所述第一出光部与所述光轴垂直的纵截面为矩形，且所述第一出光部的纵截面面积沿所述光轴方向逐渐减小。
所述第二出光部的上侧面和下侧面均为斜面，且所述第一出光部上侧面的 倾斜角度与所述第二出光部的上侧面倾斜角度相同，所述第一出光部下侧面的倾斜角度与所述第二出光部的下侧面倾斜角度相同。
所述第一出光部的任一纵截面的宽度大于所述纵截面的高度。
所述通光部的上部或者下部开设有倾斜槽，所述倾斜槽包括靠近所述入光部的倾斜面和靠近所述出光部的竖直面，，倾斜面和竖直面的相交线的形状与灯光截止线形状相匹配，所述倾斜面沿光轴方向向靠近通光部下部或者上部方向倾斜，以使射至所述倾斜面的光线发生全反射。
所述通光部与所述出光部相连的纵截面的高度小于所述出光部与所述通光部相连的纵截面的高度，所述通光部的上表面或者下表面设有全反射面，所述全反射面和所述出光部上突出所述通光部的竖直壁面形成台阶部，且全反射面和竖直壁面的相交线的形状与灯光截止线的形状相同，所述全反射面被配置为使射至所述全反射面的光线发生全反射。
一种车辆前照灯，包括以上任一方案所述的车灯光学元件，还包括电路板及散热器，所述车灯光学元件设置在所述电路板的一侧，所述散热器安装在所述电路板的另一侧，所述电路板上设有光源，所述光源正对所述入光部设置。
本申请提供的车灯光学元件，通过将相关技术的初级光学元件和次级光学元件一体化设置，省去一个光学元件，车灯光学元件结构简单、体积小，且安装时仅需要一次安装即可，避免了二次安装误差，提高了车灯光学元件的整体安装精度和光学系统精度，能够得到理想的车灯光形。
附图说明
图1是本申请一实施例提供的车灯光学元件的示意图；
图2是本申请一实施例提供的车灯光学元件在一个方向上的剖视图；
图3是本申请一实施例提供的车灯光学元件在另一个方向上的剖视图；
图4是本申请另一实施例提供的车灯光学元件的示意图；
图5是本申请另一实施例提供的车灯光学元件带倾斜槽的示意图；
图6是本申请另一实施例提供的车灯光学元件带台阶部的示意图；
图7是本申请一实施例提供的车辆前照灯的示意图；
图8是本申请一实施例提供的车辆前照灯的剖视图。
图中：
1、车灯光学元件；
11、入光部；111、入光面；12、通光部；121、倾斜槽；1211、倾斜面；1212、竖直面；122、台阶部；1221、全反射面；13、出光部；131、第一出光部；132、第二出光部；
2、电路板；21、光源；
3、散热器。
具体实施方式
在本申请的描述中，需要说明的是，在未作相反说明的情况下，使用的方位词，如“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”“前”“后”等指示的方位或位置关系是基于本申请的车灯光学元件安装到车辆上后，按照车辆的正常行驶状态下的方位所指示的方位或位置关系。。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。其中，术语“第一位置”和“第二位置”为两个不同的位置。
在本申请的描述中，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；可以是机械连接，也可以是电连接；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，可以具体情况理解上述术语在本申请中的具体含义。
下面结合附图和具体实施例对本申请中的技术方案详细描述。
如图1至图8所示，一种用于车灯的车灯光学元件1包括依次连接且一体成型的入光部11、通光部12及出光部13，入光部11被配置为能够将光源21的光线聚射至通光部12上，通光部12纵截面面积沿光轴方向逐渐增大，出光部13朝向远离入光部11的方向凸设且被配置为能够折射经通光部12射出的光线。
本申请中，光轴为经过出光部13的焦点沿车灯光学元件1的前后方向延伸的轴线，光轴方向定义为沿光轴且由入光部11指向出光部13的方向；纵截面定义为垂直于光轴的平面
本实施例的车灯光学元件1为透明的塑料车灯光学元件，该塑料车灯光学元件的材料为聚甲基丙烯酸甲酯(polymethyl methacrylate，简称PMMA)或者聚碳酸酯(Polycarbonate，简称PC)。本申请的其他实施例中，该车灯光学元件1还可以为硅胶车灯光学元件或玻璃车灯光学元件，车灯光学元件1的材料具体根据实际需要选择设置。
入光部11朝向远离所述通光部12的方向凸设，入光部11上具有入光面111，所述入光面111为朝向远离所述通光部12的方向凸设的弧状面。具体地，如图1至图3所示，本实施例的入光部11为曲面入光部，相应的，入光面111为弧状面，入光部11的个数为五个，五个入光部11依次连接成一排，每个入光部11正对一个光源21设置。本申请的其他实施例中，入光部11的个数并不限于本实施例的五个，还可以为除五个之外的其他个数，入光部11的分布也并不限于本实施例的一排，还可以为至少两排，具体根据实际需要设置。在一实施例中，每个入光部11可以正对一个光源21设置。
本实施例提供的车灯光学元件1，通过将相关技术的初级光学元件和次级光学元件一体设置，省去一个光学元件，结构简单、体积减小，安装时，仅需要一次安装即可，避免了二次安装误差，提高了车灯光学元件1的整体安装精度和光学系统精度，能够得到理想的车灯光形。
本实施例的通光部12的纵截面为矩形，该通光部12上除与入光部11和出光部13相连的端面之外的四个侧面均为斜面，且倾斜方向使通光部12的纵截面面积沿光轴方向逐渐增大，以使更多的光线经通光部12射入出光部13，提高光线的利用率，进而符合车灯光形要求。
如图2所示，本实施例的出光部13包括第一出光部131和第二出光部132，第一出光部131的一端面与通光部12连接，第一出光部131的另一端面与第二出光部132连接，第一出光部131的另一端面作为出光面且为平面，第二出光部132远离第一出光部131的端面作为出光面且为曲面。第一出光部131上除与通光部12和第二出光部132相连的两个端面之外的四个侧面均为斜面，第一 出光部131的纵截面为矩形，且斜面的倾斜方向使第一出光部131的纵截面面积沿光轴方向逐渐减小，以将射至第一出光部侧面的光线向靠近光轴的方向汇聚，以符合车灯光形要求。第二出光部132的出光面为朝向远离入光面111的方向凸设的曲面部且被配置为将通光部12射出的光线折射。为了满足实际需求，第一出光部131任一纵截面的宽度大于所述纵截面的高度，其中第一出光部131纵截面的宽度即为矩形的长，第一出光部131纵截面的高度即为矩形的宽，使该第一出光部131构成窄长形的外观造型，满足小型车灯模组以及小开口透镜出光面的市场需求，矩形纵截面的长和宽的比值为2.5。其他实施例中，矩形的长和宽的比值还可以为除本实施例的2.5且大于1的任一数值，具体根据实际需要设置。
如图4所示，本申请另一实施例所提供的用于车灯的车灯光学元件，其中，入光部11还可以为聚光杯，聚光杯的远离通光部12的一面设有凹槽，且凹槽内设有向远离通光部12方向设置的凸起，从而更好地汇聚光线。虽然这种聚光杯的聚光效果较好，但是由于这种聚光杯结构复杂、加工难度大，应用较少。在其他实施例中，该聚光杯的远离通光部12的一面还可以为平面状，以平面的入光面111来接收光源21的光线并将光线汇聚至通光部12上。
为了使该车灯光学元件1形成近光或辅助近光，如图5所示，通光部12的下部开设有倾斜槽121，倾斜槽121沿光轴方向设置。具体地，该倾斜槽121为尖槽，倾斜槽121的壁面包括靠近入光部11的倾斜面1211和靠近出光部13的竖直面1212，倾斜面1211沿光轴方向向靠近通光部12的上部方向倾斜，倾斜面1211为全反射面，且被配置为将射至倾斜面1211上的光线进行全反射。这种由倾斜面1211和竖直面1212围成的倾斜槽121，加工工艺简单。倾斜面1211与竖直面1212的相交线的形状与近光截止线的形状相匹配，使得射入通光部12的光线经该相交线截止后再由出光部13射出，形成近光截止线。其他实施例中，还可以将倾斜槽121靠近出光部13的壁面设计为倾斜面，具体结构根据实际需要设置。
为了使该车灯光学元件1形成远光或辅助远光，倾斜槽121还可以开设于通光部12的上部，倾斜槽121沿光轴方向设置。具体地，该倾斜槽121为尖槽，倾斜槽121的壁面包括靠近入光部11的倾斜面1211和靠近出光部13的竖直面1212，倾斜面1211沿光轴方向向靠近通光部12的下部方向倾斜，倾斜面1211 被配置为将射至倾斜面1211上的光线进行全反射。同样地，倾斜面1211与竖直面1212的相交线的形状与远光截止线的形状相匹配，使得射入通光部12的光线经该相交线截止后再由出光部13射出，形成远光截止线。当然，由于车灯光学元件1本身能够形成远光或辅助远光，因此远光截止线也可不设，即通光部12上部的倾斜槽121也可以不用设置。
在其他具体实施例中，通光部12与所述出光部13连接处的纵截面的高度小于出光部13与通光部12连接处的纵截面的高度，即在通光部12的上表面或者下表面设有全反射面1221，如图6所示，全反射面1221设于通光部12的上表面时，该车灯光学元件1形成远光或辅助远光，全反射面1221设于通光部12的下表面时，该车灯光学元件1形成近光或辅助近光。全反射面1221和出光部13上凸出于通光部12的壁面形成台阶部122，且两者的相交线的形状与截止线的形状相匹配，全反射面1221被配置为使射至全反射面1221的光线发生全反射。
上述截止线为车灯相关法规中定义的明暗截止线，根据《GB 4599-2007——汽车用灯丝灯泡前照灯》定义：明暗截止线为光束投射到配光屏幕上，目视感觉到的明暗显著变化的分界线。所述相交线的形状可根据明暗截止线的不同进行不同的设置。在车灯光学元件1上增设的倾斜槽121或台阶部122能够替代相关技术中的独立于车灯光学元件1设置的遮光板，与相关技术相比，本申请的车灯光学元件1的结构更加简单。
本实施例还提供一种车辆前照灯，如图7和图8所示，该车灯包括本实施例所述的车灯光学元件1、电路板2及散热器3，车灯光学元件1通过安装架(图中未示出)安装在电路板2的一侧，散热器3安装在电路板2的另一侧，散热器3用于将电路板2所产生的热量散发出去，电路板2上设有光源21，光源21正对入光面111设置。

Claims (13)

  1. 一种车灯光学元件，包括依次连接且一体成型的入光部(11)、通光部(12)及出光部(13)，所述入光部(11)被配置为将光源(21)的光线聚射至所述通光部(12)上，所述通光部(12)的纵截面面积沿光轴方向逐渐增大，所述出光部(13)朝向远离所述入光部(11)的方向凸设且被配置为折射经所述通光部(12)射出的光线，其中，所述通光部(12)的纵截面为与所述光轴垂直的面。
  2. 根据权利要求1所述的车灯光学元件，其中，所述入光部(11)朝向远离所述通光部(12)的方向凸设。
  3. 根据权利要求2所述的车灯光学元件，其中，所述入光部(11)上具有入光面(111)，所述入光面(111)为朝向远离所述通光部(12)的方向凸设的弧状面。
  4. 根据权利要求2所述的车灯光学元件，其中，所述入光部(11)包括聚光杯，所述聚光杯的贴靠所述通光部(12)的一面为平面，或者所述聚光杯的远离所述通光部(12)的一面设有凹槽，且所述凹槽内设有向远离所述通光部(12)方向设置的凸起。
  5. 根据权利要求1至4任一项所述的车灯光学元件，其中，所述入光部(11)的个数为至少两个，且所述至少两个入光部(11)呈行列排布，每个所述入光部(11)设置为正对一个所述光源(21)。
  6. 根据权利要求1所述的车灯光学元件，其中，所述通光部(12)的纵截面为矩形，且所述通光部(12)上除与所述入光部(11)和所述出光部(13)相连的端面之外的四个侧面均为斜面。
  7. 根据权利要求1所述的车灯光学元件，其中，所述出光部(13)包括第一出光部(131)和第二出光部(132)，所述第一出光部(131)的一端面与所述通光部(12)连接，另一端面与所述第二出光部(132)连接，所述第一出光部(131)的另一端面作为出光面且为平面，所述第二出光部(132)远离所述第一出光部(131)的端面作为出光面且为曲面。
  8. 根据权利要求7所述的车灯光学元件，其中，所述第一出光部(131) 除两个端面之外的四个侧面均为斜面，所述第一出光部(131)的与所述光轴垂直的纵截面为矩形，且所述第一出光部(131)的纵截面面积沿所述光轴方向逐渐减小。
  9. 根据权利要求8所述的车灯光学元件，其中，所述第二出光部(132)的上侧面和下侧面均为斜面，且所述第一出光部(131)上侧面的倾斜角度与所述第二出光部(132)的上侧面倾斜角度相同，所述第一出光部(131)下侧面的倾斜角度与所述第二出光部(132)的下侧面倾斜角度相同。
  10. 根据权利要求7、8或9所述的车灯光学元件，其中，所述第一出光部(131)的任一纵截面的宽度大于所述纵截面高度。
  11. 根据权利要求1至10任一项所述的车灯光学元件，其中，所述通光部(12)的上部或者下部开设有倾斜槽(121)，所述倾斜槽(121)包括靠近所述入光部(11)的倾斜面(1211)和靠近所述出光部(13)的竖直面(1212)，所述倾斜面(1211)和所述竖直面(1212)的相交线的形状与灯光截止线的形状相匹配，所述倾斜面(1211)沿所述光轴方向向靠近所述通光部(12)的下部或者上部方向倾斜，以使射至所述倾斜面(1211)的光线发生全反射。
  12. 根据权利要求1至10任一项所述的车灯光学元件，其中，所述通光部(12)与所述出光部(13)相连的纵截面的高度小于所述出光部(13)与所述通光部(12)相连的纵截面的高度，所述通光部(12)的上表面或者下表面设有全反射面(1221)，所述全反射面(1221)和所述出光部(13)上凸出于所述通光部(12)的竖直壁面形成台阶部(122)，且所述全反射面(1221)和所述竖直壁面的相交线的形状与灯光截止线的形状相匹配，所述全反射面(1221)被配置为使射至所述全反射面(1221)的光线发生全反射。
  13. 一种车辆前照灯，包括如权利要求1至12任一项所述的车灯光学元件(1)，还包括电路板(2)及散热器(3)，所述车灯光学元件(1)设置在所述电路板(2)的一侧，所述散热器(3)安装在所述电路板(2)的另一侧，所述电路板(2)上设有光源(21)，所述光源(21)正对所述入光部(11)设置。
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