CN112781001A - Car light optical element, car light module and vehicle - Google Patents

Car light optical element, car light module and vehicle Download PDF

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Publication number
CN112781001A
CN112781001A CN202010669827.7A CN202010669827A CN112781001A CN 112781001 A CN112781001 A CN 112781001A CN 202010669827 A CN202010669827 A CN 202010669827A CN 112781001 A CN112781001 A CN 112781001A
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CN
China
Prior art keywords
light
reflecting surface
optical element
cut
reflecting
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202010669827.7A
Other languages
Chinese (zh)
Inventor
董世琨
刘正楠
何士群
王铿
张赫
刘阳
樊露青
周市委
桑文慧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HASCO Vision Technology Co Ltd
Original Assignee
HASCO Vision Technology Co Ltd
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 HASCO Vision Technology Co Ltd filed Critical HASCO Vision Technology Co Ltd
Priority to CN202010669827.7A priority Critical patent/CN112781001A/en
Publication of CN112781001A publication Critical patent/CN112781001A/en
Priority to EP21842368.9A priority patent/EP4170229A4/en
Priority to PCT/CN2021/098405 priority patent/WO2022012211A1/en
Pending legal-status Critical Current

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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
    • F21S41/10—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]
    • 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
    • F21S41/30—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
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • 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
    • 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
    • F21W2102/30—Fog lights
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention relates to a vehicle lighting device, and discloses a vehicle lamp optical element which comprises a light-passing part (2) and a light-emitting part (3), wherein the light-passing part (2) comprises a light-entering surface (25), a first reflecting surface (21) and a second reflecting surface (22), and the first reflecting surface (21) and the second reflecting surface (22) are oppositely arranged, so that light received by the light-entering surface (25) is reflected by the first reflecting surface (21) and the second reflecting surface (22) in sequence and then emitted to the light-emitting part (3). In addition, the invention also discloses a car lamp module and a car. The optical element for the vehicle lamp is miniaturized and has higher integration degree.

Description

Car light optical element, car light module and vehicle
Technical Field
The present invention relates to a vehicle lighting device, and particularly to a lamp optical element. In addition, the invention also relates to a vehicle lamp module and a vehicle comprising the vehicle lamp optical element.
Background
In recent years, the car lamp and the car lamp module assembled in the car lamp have been rapidly developed, from the early halogen lamp to the later hernia lamp, and then to the current LED and laser light source, so that the car lamp becomes more intelligent and the shape is more differentiated. Among various car light sources, the LED light source has been gradually paid attention to by car manufacturers due to its excellent performance and low cost advantage, and along with the development of the LED light source, its light distribution structure has been gradually developed.
The lighting module with the LED light source commonly used in the automobile lamp in the prior art generally comprises a light source, a reflecting element, a shading plate, a lens and a mounting bracket, wherein light rays emitted by the light source are reflected by the reflecting element and then emitted to the shading plate, and after being intercepted by the shading plate, the light rays are projected by the lens to form the required parallel light-like lighting light shape. The number and the types of parts in the lighting module in the prior art are more, so that on one hand, the precision of an optical system is influenced due to the manufacturing errors of the parts and the assembly errors among the parts, and further the lighting light shape is influenced, on the other hand, the cost of the lighting module is increased due to parts such as a light screen, a support and the like, and the positioning and mounting difficulty of the lighting module is increased; in addition, the front and back propagation distance of the light in the lighting system is longer, and the distance between the reflecting element and the lens is longer, so that the length of the lighting module is increased, which is in outstanding contradiction with the trend of more compact car lamp models in the future.
In view of the above, a new optical element for a vehicle lamp is needed.
Disclosure of Invention
The present invention is directed to an optical element for a vehicle lamp, which is miniaturized and integrated to a higher degree.
The second aspect of the present invention is to provide a vehicle lamp module with a smaller size and a higher degree of integration.
A third aspect of the present invention is to provide a vehicle having a lamp module that is more compact and integrated.
In order to solve the above technical problem, an aspect of the present invention provides an optical element for a vehicle lamp, including a light-passing portion and a light-emitting portion, where the light-passing portion includes a light-entering surface, a first reflecting surface and a second reflecting surface, and the first reflecting surface and the second reflecting surface are oppositely disposed, so that light received by the light-entering surface is reflected by the first reflecting surface and the second reflecting surface in sequence and then emitted to the light-emitting portion.
Preferably, the first reflecting surface can reflect light received by the light incident surface backwards or upwards to the second reflecting surface, and a rear edge of the first reflecting surface forms a cut-off line structure; or, the first reflecting surface can reflect light received by the light incident surface downwards to the second reflecting surface, and a rear edge of the second reflecting surface forms a cut-off line structure.
Further preferably, the first reflecting surface can reflect light received by the light incident surface backwards or upwards to the second reflecting surface, a cut-off line structure is formed at a rear edge of the first reflecting surface, and a light converging point of an optical system formed by the second reflecting surface and the light emergent portion is located at the cut-off line structure; or the first reflecting surface can reflect light received by the light incident surface downwards to the second reflecting surface, a cut-off line structure is formed at the rear edge of the second reflecting surface, and a light converging point of an optical system formed by the first reflecting surface, the second reflecting surface and the light emergent part is positioned at the cut-off line structure.
Preferably, a protruding structure is arranged on the light-passing portion, and a rear surface of the protruding structure intersects with the light-passing portion to form a cut-off line structure.
Further preferably, a light converging point of an optical system formed by the first reflecting surface, the second reflecting surface and the light emergent portion is located at the cut-off line structure.
Further preferably, the cut-off line structure is a curve with inflection points, and two sides of the curve are bent forwards; or the cut-off line structure is a smooth curve with two sides bent forwards.
Preferably, the optical element of the car lamp further comprises a light-condensing part arranged behind the light-incident surface, and the light-condensing part is of a light-condensing cup structure; or the light-gathering part is a curved surface structure or a cone structure which protrudes backwards.
As a specific structural style, the light-gathering portion is of a light-gathering cup structure, an external profile surface of the light-gathering portion is a curved surface gradually increasing from one end far away from the light-passing portion to one end close to the light-passing portion, an inner concave cavity is formed in one end far away from the light-passing portion of the light-gathering portion, the inner concave cavity comprises a front light-in surface and a side light-in surface, the front light-in surface is a curved surface protruding towards one side far away from the light-passing portion, and the side light-in surface is a curved surface gradually decreasing from one end far away from the light-passing portion to one end close to the light-passing portion.
Preferably, the optical element of the vehicle lamp is a solid optical conductor which is integrally molded.
Specifically, the first reflecting surface and the second reflecting surface are provided with coating reflecting layers.
More specifically, the first and second reflective surfaces are planar.
Preferably, the light emitting part includes a light emitting surface, and the light emitting surface is a curved surface protruding forward.
The invention also provides a car lamp module, which comprises a light source and the car lamp optical element in any one of the technical schemes of the first aspect, wherein the light source is arranged behind the light incident surface.
The third aspect of the invention also provides a vehicle, which comprises the lamp module set in the technical scheme of the second aspect.
Through the optical element of the vehicle lamp in the basic technical scheme, the following technical effects can be achieved:
1. the optical shape can be independently formed, other optical elements are not needed, the integration degree is high, a connecting structure among the optical elements is omitted, the cost is reduced, manufacturing errors and installation errors caused by a plurality of and miscellaneous parts are avoided, and the accuracy and the stability of the optical shape are guaranteed;
2. the front and back transmission distances of light rays are shortened by utilizing the first reflecting surface and the second reflecting surface, so that the occupied space of the optical element is smaller, the utilization efficiency of the space of the car lamp is greatly improved, and the miniaturization degree of the car lamp is high;
3. simple structure to reduce the structural complexity of car light module, simplified the process flow of production for the production beat, practiced thrift manufacturing cost, thereby avoided assembly error guarantee emergent light shape stable.
Further advantages of the present invention, as well as the technical effects of preferred embodiments, are further described in the following detailed description.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of an optical element for a vehicle lamp according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is one of the schematic structural views of a second embodiment of the optical element for a vehicular lamp according to the present invention;
FIG. 4 is a second schematic structural diagram of a second embodiment of the optical element of the vehicular lamp according to the present invention;
FIG. 5 is a schematic optical path diagram of a second embodiment of the optical element of the vehicle lamp according to the present invention;
FIG. 6 is one of the schematic structural views of a third embodiment of the optical element for a vehicular lamp according to the present invention;
FIG. 7 is a second schematic structural view of a third embodiment of an optical element for a vehicular lamp according to the present invention;
FIG. 8 is a third schematic structural view of a third embodiment of an optical element for a vehicular lamp according to the present invention;
FIG. 9 is a schematic optical path diagram of a third embodiment of the optical element for a vehicle lamp according to the present invention;
FIG. 10 is a left side view of FIG. 7;
FIG. 11 is a bottom view of FIG. 7;
FIG. 12 is a schematic structural view of a fourth embodiment of an optical element for a vehicular lamp according to the present invention;
FIG. 13 is one of the schematic structural views of a fifth embodiment of the optical element for a vehicular lamp according to the present invention;
FIG. 14 is a second schematic structural view of a fifth embodiment of an optical element for a vehicular lamp according to the present invention;
FIG. 15 is a schematic optical path diagram of a fifth embodiment of the optical element of the vehicular lamp according to the present invention;
FIG. 16 is one of the schematic structural views of a sixth embodiment of the optical element for a vehicular lamp according to the present invention;
FIG. 17 is a second schematic structural view of a sixth embodiment of an optical element for a vehicular lamp according to the present invention;
FIG. 18 is a schematic optical path diagram of a sixth embodiment of the optical element for a vehicle lamp according to the present invention;
FIG. 19 is a schematic diagram showing the structure and optical path of a seventh embodiment of the optical element for a vehicular lamp according to the present invention;
FIG. 20 is a schematic diagram showing the structure and optical path of an eighth embodiment of the optical element for a vehicular lamp according to the present invention;
fig. 21 is a schematic view of the installation of the light source and the light-condensing portion of the present invention.
Description of the reference numerals
1 light-gathering part and 2 light-passing part
21 first reflecting surface 22 second reflecting surface
23 convex structure 24a stop line structure
24b cut-off line structure 24c cut-off line structure
25 incident light surface
3 light-emitting part 31 light-emitting surface
4 light source
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description is provided for purposes of illustration and explanation and is not intended to limit the scope of the invention.
It is to be understood that, as shown in fig. 1, based on the optical element for a vehicle lamp, when it is normally installed in the vehicle lamp, in the light outgoing direction, "front" means the end of the light outgoing portion 3, "rear" means the end of the light incoming surface 25, "left" means the left side in the light outgoing direction, "right" means the right side in the light outgoing direction, "up" means above in the light outgoing direction, "down" means below in the light outgoing direction, in the actual mounting situation, the terms of orientation, which are based on the orientation or positional relationship shown in the drawings, should be interpreted in accordance with the actual mounting state in conjunction with the host vehicle lamp optical element itself, merely for convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. The light emitting direction is a direction of the light emitted from the optical element of the vehicle lamp. According to the definition of GB 4599-2007-filament bulb headlamp for automobile: the cutoff line is a cut-off line at which a light beam projected on the light distribution screen is visibly changed in shade, and the low beam cutoff line is an upper boundary of a low beam shape of the vehicle lamp.
Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of the features described.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be noted that, for the requirements of vehicle lamp modeling, at least one inner lens may be disposed between the vehicle lamp optical element and the outer lens, and the inner lens may be a common plastic piece with equal wall thickness, only for representing the required modeling, or a light distribution plastic piece with a light distribution function on the back.
Referring to fig. 1 and 2, a first aspect of the present invention provides an optical element for a vehicle lamp, including a light passing portion 2 and a light emitting portion 3, which are sequentially disposed, where the light passing portion 2 includes a light incident surface 25, a first reflection surface 21, and a second reflection surface 22. The light incident surface 25 may be a plane or a curved surface protruding backward, light is emitted from the light incident surface 25 to the light transmitting portion 2, and the first reflective surface 21 and the second reflective surface 22 are disposed opposite to each other, so that the light is emitted to the light emitting portion 3 after being reflected by the first reflective surface 21 and the second reflective surface 22 in sequence. Optionally, the first reflection surface 21 and the second reflection surface 22 are disposed in front of and behind each other, the light received by the light incident surface 25 is firstly emitted to the first reflection surface 21, the first reflection surface 21 can reflect the light to the second reflection surface 22 in a backward direction, the second reflection surface 22 reflects the light to the light emergent portion 3 in a forward direction, and the light emergent portion 3 projects the light to form an emergent light shape; alternatively, the first reflection surface 21 and the second reflection surface 22 are vertically arranged, the light received by the light incident surface 25 is firstly emitted to the first reflection surface 21, the first reflection surface 21 can reflect the light upwards or downwards to the second reflection surface 22 and then to the light emergent part 3, and the light emergent shape is formed by projection of the light emergent part 3.
The lighting module in the prior art generally comprises a light source, a reflecting element, a light shielding plate, a lens and a mounting bracket, wherein light rays emitted by the light source are reflected by the reflecting element and then emitted to the light shielding plate, and are intercepted by the light shielding plate and then projected by the lens to form a required parallel light-like lighting light shape. Obviously, the number and the types of the parts of the lighting module with the structure are large, the positioning precision is low, the front and back propagation distance of light is long, and the distance between the reflecting element and the lens is long, so that the length of the lighting module is long, and the arrangement flexibility in the limited space of the car lamp is not high.
The vehicle lamp optical element of the invention skillfully utilizes the first reflecting surface 21 and the second reflecting surface 22 to change the transmission direction of the light in the vehicle lamp optical element, so that the light received by the light inlet surface 25 is reflected by the first reflecting surface 21 and the second reflecting surface 22 in sequence and then emitted to the light outlet part 3, thereby shortening the front and back transmission distance of the light and reducing the occupied space of the vehicle lamp optical element in the front and back direction of the vehicle lamp under the condition of unchanging the optical path.
The optical element of the vehicle lamp in the basic technical scheme can independently form light shapes, does not need other optical elements such as a light screen, a lens and the like, has high integration degree, can avoid assembly errors generated among the optical elements in the assembly process, and improves the assembly precision, thereby improving the optical precision; moreover, the first reflecting surface 21 and the second reflecting surface 22 are utilized to shorten the front-back propagation distance of light, so that the space occupied by the optical element of the vehicle lamp is smaller, the structure is more compact, the miniaturization degree is high, the arrangement in the vehicle lamp is more flexible, and the requirements of users on the personalized and scientific vehicle lamp shape are met; in addition, this car light optical element simple structure has reduced the assembly of car light module, has adjusted luminance the degree of difficulty, has simplified the process flow of production for the production beat, practiced thrift manufacturing cost, avoided assembly error, thereby the guarantee emergent light shape is stable.
As a structure of the optical element for a vehicle lamp for a low beam lamp, referring to fig. 3 to 5, the first reflecting surface 21 reflects light rearward to the second reflecting surface 22, and a cut-off line structure 24a is formed at a junction of the lower surface of the light passing portion 2 and the first reflecting surface 21, that is, at a rear edge of the first reflecting surface 21; alternatively, referring to fig. 13 to 15, the first reflecting surface 21 reflects the light upward to the second reflecting surface 22, and a cut-off line structure 24a is formed at the intersection of the lower surface of the light passing portion 2 and the first reflecting surface 21, i.e., at the rear edge of the first reflecting surface 21; alternatively, referring to fig. 19, the first reflecting surface 21 reflects the light downward to the second reflecting surface 22, and a cut-off line structure 24c is formed at the intersection of the lower surface of the light passing part 2 and the second reflecting surface 22, i.e., at the rear edge of the second reflecting surface 22. The light incident from the light incident surface 25 is reflected by the first and second reflection surfaces 21 and 22 in sequence, then emitted to the light emergent portion 3, and projected by the light emergent portion 3 to form an illumination light pattern. More specifically, in the embodiment shown in fig. 5 and 15, the light emitted to the cut-off line structure 24a is reflected by the second reflective surface 22 and emitted to the light-emitting portion 3, and the light is projected by the light-emitting portion 3 to form a cut-off line of the illumination light shape, the cut-off line is located at an upper boundary of the illumination light shape, the light emitted to the first reflective surface 21 is reflected by the second reflective surface 22 and emitted to the light-emitting portion 3, and the light is projected by the light-emitting portion 3 to form the illumination light shape; in the embodiment shown in fig. 19, the light incident on the cut-off line structure 24c is reflected by the first reflective surface 21 and the second reflective surface 22 in sequence and then emitted to the light emitting portion 3, and the light is projected by the light emitting portion 3 to form a cut-off line of the illumination light shape, the cut-off line is located at the upper boundary of the illumination light shape, the light emitted to the first reflective surface 21 is reflected by the second reflective surface 22 and then emitted to the light emitting portion 3, and the light is projected by the light emitting portion 3 to form the illumination light shape. The cut-off line structure 24a, the cut-off line structure 24c can be a broken line or a curve with an inflection point for forming a low-beam cutoff line with an inflection point, and the illumination light shape can be a complete low-beam light shape or a main low-beam light shape projected to a low-beam central area; the cut-off line structures 24a, 24c may also be straight lines or arcs for forming a horizontal low-beam cut-off line, and the illumination light pattern thereof may be an auxiliary low-beam light pattern projected to the low-beam widening area.
Preferably, referring to fig. 5 and 15, when the first reflection surface 21 reflects the light received by the light incident surface 25 back or upward to the second reflection surface 22, and a line stop structure 24a is formed at the rear edge of the first reflection surface 21, a light converging point of an optical system formed by the second reflection surface 22 and the light emergent portion 3 is located at or near the line stop structure 24 a. The light converging point of the optical system is a point where parallel light rays enter the second reflecting surface 22 from the front of the light emergent portion 3, are reflected by the second reflecting surface 22 to the cut-off line structure 24a or its vicinity, and then converge on the cut-off line structure 24a or its vicinity. More vividly, the second reflecting surface 22 is a plane, the parallel light is incident from the front of the light emergent portion 3 and is refracted by the light emergent portion 3 to be converged to form a focal point, the light converging point and the focal point are symmetrical about the second reflecting surface 22, therefore, according to the reversibility of light, the light path of the light emitted from the light converging point after being reflected to the light emergent portion 3 by the second reflecting surface 22 is the same as the light path of the light emitted from the focal point directly through the light emergent portion 3, and the former shortens the front-back propagation distance of the light compared with the latter. Referring to fig. 19, when the first reflecting surface 21 can reflect the light received by the light incident surface 25 downward to the second reflecting surface 22, and a cut-off line structure 24c is formed at the rear edge of the second reflecting surface 22, a light converging point of an optical system formed by the first reflecting surface 21, the second reflecting surface 22 and the light emergent portion 3 is located at the cut-off line structure 24 c. The light converging point of the optical system is a point where parallel light rays enter the second reflecting surface 22 from the front of the light emergent portion 3, are reflected to the cut-off line structure 24c or a region near the cut-off line structure 24c through the second reflecting surface 22 and the first reflecting surface 21 in sequence, and then converge on the cut-off line structure 24c or a region near the cut-off line structure. More vividly, the first reflecting surface 21 and the second reflecting surface 22 are planes, the parallel light incident from the front of the light-emitting part 3 is refracted by the light-emitting part 3 and then converged to form a focal point, the symmetrical point of the focal point symmetrical with respect to the second reflecting surface 22 and the light converging point symmetrical with respect to the first reflecting surface 21, therefore, according to the reversibility of light, the light path of the light emitted from the light converging point after being reflected to the light-emitting part 3 by the first reflecting surface 21 and the second reflecting surface 22 in sequence is the same as the light path of the light emitted from the focal point directly through the light-emitting part 3, and the former shortens the front-back propagation distance of the light compared with the latter.
As another structure of the vehicular lamp optical element for the low beam lamp, referring to fig. 9, 18, and 20, the lower portion of the light passing portion 2 is provided with a convex structure 23, and the rear surface of the convex structure 23 intersects with the light passing portion 2 to form a cut-off line structure 24 b. Referring to fig. 9, the light incident from the light incident surface 25 is reflected by the first reflecting surface 21 and the second reflecting surface 22 in sequence and then emitted to the light emitting portion 3, and is projected by the light emitting portion 3 to form an illumination light shape, wherein the light incident on the cut-off structure 24b is reflected by the first reflecting surface 21 and the second reflecting surface 22 in sequence and then emitted to the light emitting portion 3, and is projected by the light emitting portion 3 to form a cut-off line of the illumination light shape, which is an upper boundary of the illumination light shape. Likewise, the cut-off line structure 24b may be a broken line or a curved line having an inflection point for forming a low-beam cutoff line having an inflection point, and the illumination light pattern thereof may be a complete low-beam light pattern or a main low-beam light pattern projected to a low-beam central region; the cut-off line structure 24b can also be a straight line or an arc line for forming a horizontal low-beam cut-off line, the illumination light pattern of which can be an auxiliary low-beam light pattern projected to the low-beam widening zone.
Preferably, the light converging point of the optical system formed by the first reflecting surface 21, the second reflecting surface 22 and the light emergent portion 3 is located on the cut-off line structure 24b or in the area near the cut-off line structure. The light converging point of the optical system is a point where parallel light rays enter the second reflecting surface 22 from the front of the light emergent portion 3, and then are reflected to the cut-off line structure 24b or a region near the cut-off line structure 24b through the second reflecting surface 22 and the first reflecting surface 21 in sequence, and then the parallel light rays are converged on the cut-off line structure 24b or a region near the cut-off line structure. More vividly, referring to fig. 18, the first reflecting surface 21 and the second reflecting surface 22 are flat surfaces, parallel light rays incident from the front of the light-emitting portion 3 are refracted by the light-emitting portion 3 and then converged to form a focal point, and a symmetrical point of the focal point symmetrical with respect to the second reflecting surface 22 and a light converging point symmetrical with respect to the first reflecting surface 21 are provided, so that, according to the reversibility of light, the light emitted from the light converging point is reflected to the light-emitting portion 3 through the first reflecting surface 21 and the second reflecting surface 22 in sequence and then emitted out on the same optical path as the light emitted from the focal point directly through the light-emitting portion 3, and the former shortens the forward and backward propagation distance of the light compared with the latter.
Alternatively, referring to fig. 6 to 10 and 16 to 20, the cut-off line structure 24b is a curve with an inflection point, which is curved forward on both sides, and can form a low beam cut-off line with an inflection point, so as to be used for a low beam lamp or a main low beam module in the low beam lamp; alternatively, referring to fig. 11 to 12, the cut-off line structure 24b is a smooth curve with two sides bent forward, and can form a horizontal cut-off line without an inflection point, so as to be used in an auxiliary low beam module of a low beam lamp. It will be appreciated that the sides of the cut-off line structure 24b are curved forward to form a curve that is convex rearward, so that the cut-off line image of the exit profile is more sharp or straight. The optical element of the car lamp is flexible in design, can be suitable for the car lamps in various different design spaces by additionally arranging the convex structure 23 and adjusting the positions of the stop line structures 24a, 24b and 24c according to the design spaces in different car lamps, can also be adjusted according to left and right driving positions, and is wide in applicability. Alternatively, referring to fig. 1, the optical element for a vehicle lamp may be used for other vehicle lamps such as a high beam lamp, a corner lamp, and a fog lamp without the convex structure 23 and the cut-off line structures 24a, 24b, and 24c, or may be formed into a high beam shape having a lower boundary of a bright-dark cut-off by providing the convex structure 23 and the cut-off line structures 24a, 24b, and 24 c.
In order to improve the lighting effect, the optical element of the vehicle lamp further comprises a light-condensing part 1 arranged behind the light-incident surface 25, and optionally, the light-condensing part 1 is of a light-condensing cup structure; or the light-gathering part 1 is a curved surface structure or a cone structure which protrudes backwards, and the like. Of course, the light-gathering unit 1 of the present invention is not limited to the above structure, and may be other structures, which all have the function of gathering and collimating light, and therefore, other light-gathering structures also belong to the protection scope of the present invention.
As a specific structural style, the light-gathering portion 1 is a light-gathering cup structure, the external profile surface of the light-gathering portion 1 is a curved surface gradually increasing from one end far away from the light-passing portion 2 to one end near the light-passing portion 2, the end far away from the light-passing portion 2 of the light-gathering portion 1 is provided with an indent cavity, the indent cavity comprises a front light-in surface and a side light-in surface, the front light-in surface is a curved surface protruding towards one side far away from the light-passing portion 2, and the side light-in surface is a curved surface gradually decreasing from one end far away from the light-passing portion 2 to one end. Referring to fig. 21, an opening of the concave cavity faces the light source 4 to receive light emitted from the light source 4, the light-gathering portion 1 can refract a portion of the light emitted from the light source 4 to the front through a front light-incident surface of the concave cavity, a side light-incident surface of the concave cavity can refract other light emitted from the light source 4, and the refracted light is reflected to the front through an external profile surface, so that convergence and collimation of all light beams emitted from the light source 4 can be basically achieved, and the purpose of improving the utilization rate of the light beams of the light source 4 can be achieved. Moreover, after the divergent light is refracted or reflected by the light-condensing portion 1, a light beam with a small angle can be formed, so that the light emitted by the light source 4 can be completely or mostly incident on the first reflecting surface 21, and a high luminous efficiency is realized.
Preferably, the optical element of the vehicle lamp is a solid optical conductor which is integrally formed, and since light is transmitted in the same medium all the time, the light is not attenuated basically, and the optical efficiency of the optical element of the vehicle lamp is high. Specifically, materials such as glass, PC, PMMA or silica gel can be integrally formed, the production process flow is simplified, the production cost is saved, the number of parts can be reduced, the structure of the assembled car lamp is more compact, meanwhile, the assembly errors among the optical elements in the assembly process can be avoided, the assembly precision is improved, the optical precision can be improved, and the stability of the emergent light shape is guaranteed.
Preferably, the first reflective surface 21 and the second reflective surface 22 have a reflective coating thereon. The coating reflection layer can be an aluminum coating layer, a chromium coating layer or a silver coating layer. The coating film reflecting layer can improve the reflectivity of each reflecting surface, so that the light utilization rate is improved.
More preferably, to further save costs, a coated reflective layer is provided only on a partial area of the second reflective surface 22 for reflecting light. Referring to fig. 12, the uppermost portion and the lowermost portion of the second reflective surface 22 do not function to reflect light, and thus, the two portions may be provided with no coated reflective layer, and only the middle portion of the second reflective surface 22 may be provided with a coated reflective layer.
Preferably, the first reflecting surface 21 and the second reflecting surface 22 are flat surfaces.
Typically, referring to fig. 1, the light-emitting portion 3 includes a light-emitting surface 31, and the light-emitting surface 31 is a forward convex curved surface to converge and collimate light. Or other optical surfaces with converging and collimating functions can be adopted.
The vehicle lamp module of the present invention includes the vehicle lamp optical element in the first aspect, so that the vehicle lamp module at least has all the beneficial effects brought by the above technical solution of the vehicle lamp optical element, and details are not repeated herein.
The vehicle of the present invention may include the lamp module in the above embodiment, and therefore, at least all the advantages brought by the technical solutions of the above embodiments of the lamp module are provided.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (14)

1. The optical element for the vehicle lamp is characterized by comprising a light-passing part (2) and a light-emitting part (3), wherein the light-passing part (2) comprises a light-entering surface (25), a first reflecting surface (21) and a second reflecting surface (22), and the first reflecting surface (21) and the second reflecting surface (22) are oppositely arranged, so that light rays received by the light-entering surface (25) are reflected by the first reflecting surface (21) and the second reflecting surface (22) in sequence and then irradiate the light-emitting part (3).
2. The vehicle lamp optical element according to claim 1, wherein the first reflecting surface (21) is capable of reflecting light received by the light incident surface (25) rearward or upward to the second reflecting surface (22), and a rear edge of the first reflecting surface (21) forms a cut-off line structure (24 a); or,
the first reflecting surface (21) can reflect light received by the light incident surface (25) downwards to the second reflecting surface (22), and a rear edge of the second reflecting surface (22) forms a cut-off line structure (24 c).
3. The vehicle lamp optical element according to claim 2, wherein the first reflecting surface (21) is capable of reflecting light received by the light incident surface (25) rearward or upward to the second reflecting surface (22), a rear edge of the first reflecting surface (21) forms a cut-off line structure (24a), and a light converging point of an optical system formed by the second reflecting surface (22) and the light emergent portion (3) is located at the cut-off line structure (24 a); or,
the first reflecting surface (21) can reflect light received by the light incoming surface (25) downwards to the second reflecting surface (22), a cut-off line structure (24c) is formed at the rear edge of the second reflecting surface (22), and a light converging point of an optical system formed by the first reflecting surface (21), the second reflecting surface (22) and the light outgoing part (3) is located at the cut-off line structure (24 c).
4. The optical element according to claim 1, wherein a convex structure (23) is provided on the light-passing portion (2), and a rear surface of the convex structure (23) intersects with the light-passing portion (2) to form a cut-off line structure (24 b).
5. The vehicle lamp optical element according to claim 4, wherein a light converging point of an optical system formed by the first reflecting surface (21), the second reflecting surface (22) and the light emergent portion (3) is located at the cut-off line structure (24 b).
6. The optical element according to claim 4, wherein the cut-off line structure (24b) is a curve with inflection points that is curved forward on both sides; or the cut-off line structure (24b) is a smooth curve with two sides bent forwards.
7. The vehicle lamp optical element according to any one of claims 1 to 6, further comprising a light-condensing portion (1) disposed behind the light-incident surface (25), wherein the light-condensing portion (1) is of a light-condensing cup structure; or the light-gathering part (1) is a curved surface structure or a cone structure which protrudes backwards.
8. The optical element of the vehicular lamp according to claim 7, wherein the light-gathering portion (1) has a light-gathering cup structure, the outer contour surface of the light-gathering portion (1) is a curved surface gradually increasing from one end away from the light-passing portion (2) to one end close to the light-passing portion (2), one end of the light-gathering portion (1) away from the light-passing portion (2) is provided with a concave cavity, the concave cavity comprises a front light-entering surface and a side light-entering surface, the front light-entering surface is a curved surface protruding from one side away from the light-passing portion (2), and the side light-entering surface is a curved surface gradually decreasing from one end away from the light-passing portion (2) to one end close to the light-passing portion (2).
9. The vehicular lamp optical element according to any one of claims 1 to 6, characterized in that the vehicular lamp optical element is an integrally molded solid optical conductor.
10. The optical element according to any one of claims 1 to 6, wherein the first and second reflecting surfaces (21, 22) have a coated reflecting layer thereon.
11. Automotive light optical element according to any one of claims 1 to 6, characterized in that the first (21) and second (22) reflecting surfaces are plane.
12. The optical element according to any one of claims 1 to 6, wherein the light exit portion (3) includes a light exit surface (31), the light exit surface (31) being a curved surface that is convex forward.
13. A vehicle lamp module comprising a light source (4) and the optical element of the vehicle lamp as claimed in any one of claims 1 to 12, wherein the light source (4) is disposed behind the light incident surface (25).
14. A vehicle comprising the lamp module according to claim 13.
CN202010669827.7A 2020-07-13 2020-07-13 Car light optical element, car light module and vehicle Pending CN112781001A (en)

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EP21842368.9A EP4170229A4 (en) 2020-07-13 2021-06-04 Vehicle lamp optical component, vehicle lamp module, and vehicle
PCT/CN2021/098405 WO2022012211A1 (en) 2020-07-13 2021-06-04 Vehicle lamp optical component, vehicle lamp module, and vehicle

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