CN113028355B - Car light optical assembly, illumination optical device and vehicle - Google Patents
Car light optical assembly, illumination optical device and vehicle Download PDFInfo
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- CN113028355B CN113028355B CN202110310158.9A CN202110310158A CN113028355B CN 113028355 B CN113028355 B CN 113028355B CN 202110310158 A CN202110310158 A CN 202110310158A CN 113028355 B CN113028355 B CN 113028355B
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- light
- guide channel
- light guide
- low
- optical assembly
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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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
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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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
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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
- F21S41/30—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
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- 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
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- 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
Abstract
The invention relates to a vehicle lamp and discloses a vehicle lamp optical assembly, an illumination optical device and a vehicle. The invention provides an optical assembly of a car lamp, which comprises a first optical element and a second optical element integrally formed with the first optical element, wherein the first optical element comprises a first light inlet part and a first light guide channel connected with a light outlet end of the first light inlet part, the second optical element comprises a second light inlet part and a second light guide channel connected with a light outlet end of the second light inlet part, one end of the first light guide channel far away from the first light inlet part is connected with one end of the second light guide channel far away from the second light inlet part to form an interface, and the refractive index of the first light guide channel is smaller than that of the second light guide channel; the light transmission direction of the first light guide channel is opposite to the light transmission direction of the second light guide channel, and an included angle is formed. The vehicle lamp optical assembly can be used for improving the visibility of near light at a distance, and is high in integration level and low in cost.
Description
Technical Field
The present invention relates to a vehicle lamp, and particularly to a vehicle lamp optical assembly. Further, the present invention also relates to an illumination optical device and a vehicle including the lamp optical assembly.
Background
At present, most of automobile lamps adopt LEDs as main light sources, and from the viewpoint of road surface irradiation effect, the requirements are that a cut-off line is clear, and bright and dark areas are clear; from a regulatory inspection perspective, it is desirable that the cut-off line be located accurately. The low beam lighting device of the existing car light is mainly divided into two types, one is a lens as a final light emitting element, and the other is a reflector as a final light emitting element.
In the case of an illumination device in which a mirror is used as a final light emitting element, a general structure is set such that divergent light emitted from a light source is reflected by the mirror to form a specific illumination light shape. In order to improve the uniformity of the formed illumination light shape, see chinese utility model patent CN210424859U, in this technical solution, the low beams are separately arranged in the multiple reflector units, i.e. the low beams are realized by the multiple reflector units, which still has the problems of low integration level and high cost when applied to the optical device.
Disclosure of Invention
The present invention has been made in view of the above problems, and it is an object of the present invention to provide a vehicle lamp optical assembly that can improve visibility at a distance of a low beam, and that has high integration and low cost.
A second aspect of the present invention is to provide an illumination optical device that can improve visibility at a distance of low beam, and has high integration and low cost.
A third aspect of the present invention is to provide a vehicle having an illumination optical device that can improve visibility at a distance of low beam, and that has high integration and low cost.
In order to achieve the above object, a first aspect of the present invention provides an optical assembly for a vehicle lamp, including a first optical element and a second optical element integrally formed with the first optical element, wherein the first optical element includes a first light incident portion and a first light guide channel connected to a light exit end of the first light incident portion, the second optical element includes a second light incident portion and a second light guide channel connected to a light exit end of the second light incident portion, an end of the first light guide channel away from the first light incident portion is connected to an end of the second light guide channel away from the second light incident portion to form an interface, and a refractive index of the first light guide channel is smaller than a refractive index of the second light guide channel;
the light transmission direction of the first light guide channel is opposite to that of the second light guide channel, an included angle is formed between the light transmission direction of the first light guide channel and the light transmission direction of the second light guide channel, so that the light transmitted by the first light guide channel can be refracted at the interface and enter the second light guide channel, and then refracted out from the side wall, far away from the first light entering part, of the second light guide channel, the light transmitted by the second light guide channel can be totally reflected at the interface, and then refracted out from the side wall, far away from the first light entering part, of the second light guide channel.
Preferably, the first light guide channel and the second light guide channel are provided with matching embedded structures at the interface.
As a preferable structure, a low-beam III-zone forming structure is disposed on a side wall of the first light guide channel away from the second light incident portion.
Preferably, the low-beam III-zone forming structure includes a low-beam III-zone light channel connected to the first light guide channel, and an end of the low-beam III-zone light channel, which is away from the first light incident portion, is formed as a low-beam III-zone light outlet.
More preferably, a 50L dark space forming structure is disposed on a sidewall of the first light guide channel away from the second light incident portion.
Specifically, a cut-off line structure is arranged at the upper boundary or the lower boundary of the interface.
Typically, the first light incident portion and the second light incident portion are respectively provided with a plurality of light incident structures, and the light incident structures are light condensing cup structures.
A second aspect of the present invention provides an illumination optical device, including the vehicle lamp optical assembly, the light exit reflection element, the first light source corresponding to the first light entering portion, and the second light source corresponding to the second light entering portion, where a light exit reflection surface is formed on the light exit reflection element, a light transmission direction of the first light guide channel faces the light exit reflection surface, and a light transmission direction of the second light guide channel faces a light exit light path of the light exit reflection surface.
Preferably, the surface of the light-emitting reflecting surface is provided with an aluminum-plated layer.
More preferably, the light-emitting reflecting surface comprises a plurality of reflecting surface grid units arranged in a matrix form.
A third aspect of the present invention provides a vehicle including the illumination optical device according to any one of the above aspects.
Through the technical scheme, the optical assembly for the vehicle lamp provided by the invention is provided with the first optical element and the second optical element which is integrally formed with the first optical element, and the ends, far away from the light inlet part, of the light guide channels of the first optical element and the second optical element are connected to form an interface, when the light source is applied to the lighting optical device, the light source can be matched with the light-emitting reflecting element, so that light rays incident into the first light guide channel can be refracted at an interface and enter the second light guide channel, then the light rays are refracted out of the second light guide channel and irradiate towards the light-emitting reflecting surface of the light-emitting reflecting element, the light rays are reflected by the light-emitting reflecting surface and form corresponding low-beam light shapes, and the light rays incident into the second light guide channel can be totally reflected at the interface, the light rays emitted after being reflected by the light-emitting reflection surface can enhance the illumination intensity of a near light shape close to a light and shade cut-off line area; under the matching of the first optical element and the second optical element, the near-beam enhancement function can be realized on the basis of the near-beam shape, so that the visibility of the far near-beam is improved; the optical assembly of the car lamp has high integration level and low production cost.
In a preferred embodiment of the present invention, the first light guide channel and the second light guide channel are provided with a matching embedded structure at an interface of the first light guide channel and the second light guide channel, so as to facilitate structural firmness when the first optical element and the second optical element are integrally formed; the light-emitting reflecting surface of the light-emitting reflecting element comprises a plurality of reflecting surface grid units arranged in a matrix form, and the uniformity of the formed light shape can be improved.
Other technical features and advantages of the present invention will be further described in the following detailed description.
Drawings
FIG. 1 is one of the schematic structural views of one embodiment of the optical assembly for a vehicle lamp according to the present invention;
FIG. 2 is a top view of the optical assembly of the vehicle lamp shown in FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 2;
FIG. 4 is a second schematic view of the optical assembly of the vehicle lamp shown in FIG. 1;
FIG. 5 is a partial enlarged view of the portion C of FIG. 4;
FIG. 6 is a third schematic structural view of the optical assembly of the vehicle lamp shown in FIG. 1;
FIG. 7 is a partial enlarged view of a portion D of FIG. 6;
FIG. 8 is a schematic structural diagram of an embodiment of a light exit reflecting element in accordance with the present invention;
FIG. 9 is a schematic diagram of one embodiment of an illumination optic of the present invention;
FIG. 10 is a top view of the illumination optics shown in FIG. 9;
FIG. 11 is a cross-sectional view A-A of FIG. 10;
FIG. 12 is an optical path diagram of the illumination optics shown in FIG. 9;
FIG. 13 is one of the light patterns formed by the illumination optics shown in FIG. 9;
FIG. 14 is a second light pattern formed by the illumination optics shown in FIG. 9;
fig. 15 is a schematic diagram of a control method of the low beam boost function in the illumination optics shown in fig. 9.
Description of the reference numerals
1 first optical element 11 first light incident part
12 first light guide channel 13 near light III area forming structure
131 low-beam III-zone light channel 132 low-beam III-zone light outlet
1450L dark space Forming Structure 2 second optical element
21 second light incident part 22 second light guide channel
3 light-emitting reflecting surface of light-emitting reflecting element 31
4 first light source 5 second light source
6 first circuit board 7 second circuit board
a interface b cut-off line structure
001 near light shape 002 near light III zone light shape
003 near 50L dark zone 004 near light enhancement zone
Detailed Description
First, in the following description, for example, "up", "down", "front", "back", "left", "right", and the like, which are used to clearly describe the technical aspects of the present invention, the "front" means a direction indicated by a light emitting direction of an illumination optical device (i.e., the light emitting reflection element 3), the "back" means a direction opposite to the "front", the "up" means an upper side with respect to a front-back direction, the "down" means a lower side with respect to a front-back direction, the "left" means a left side with respect to a front-back direction, and the "right" means a right side with respect to a front-back direction, that is, the same direction as the left-right direction in which the vehicle normally travels. The terminology used is for the purpose of describing the invention only and is not intended to be limiting of the invention since it is the intention of the inventors to specify or imply that the apparatus or component referred to must be constructed and operated in a particular orientation based on the orientation or positional relationship illustrated in the drawings.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "mounted" are to be construed broadly, e.g., the connection may be a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, or through both elements in an internal or interactive relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. 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.
The optical assembly for a vehicle lamp provided by the first aspect of the present invention, referring to fig. 1 to 7, includes a first optical element 1 and a second optical element 2 integrally formed with the first optical element 1, where the first optical element 1 includes a first light incident portion 11 and a first light guiding channel 12 connected to a light exit end of the first light incident portion 11, the second optical element 2 includes a second light incident portion 21 and a second light guiding channel 22 connected to a light exit end of the second light incident portion 21, an end of the first light guiding channel 12 away from the first light incident portion 11 is connected to an end of the second light guiding channel 22 away from the second light incident portion 21 to form an interface a, and a refractive index of the first light guiding channel 12 is smaller than a refractive index of the second light guiding channel 22; the light transmission direction of the first light guide channel 12 is opposite to the light transmission direction of the second light guide channel 22, and an included angle is formed between the light transmission direction of the first light guide channel 12 and the light transmission direction of the second light guide channel 22, so that the light transmitted by the first light guide channel 12 can be refracted at the interface a and enter the second light guide channel 22, and then refracted out from the side wall of the second light guide channel 22 far away from the first light entering part 11, and the light transmitted by the second light guide channel 22 can be totally reflected at the interface a and then refracted out from the side wall of the second light guide channel 22 far away from the first light entering part 11.
In the present invention, the first light guiding channel 12 and the second light guiding channel 22 are connected and integrally formed, so that the two form an interface a shown in fig. 1, and the light transmission directions of the first light guiding channel 12 and the second light guiding channel 22 respectively refer to the directions in which light incident from the corresponding light incident portion is transmitted from the light incident end (i.e. the end close to the corresponding light incident portion) to the light exit end (i.e. the end far from the corresponding light incident portion) of the light guiding channel. The included angle between the light transmission direction of the first light guide channel 12 and the light transmission direction of the second light guide channel 22 can be designed according to the respective refractive indexes of the first light guide channel 12 and the second light guide channel 22 and the relative orientation between the corresponding light reflecting element (for example, the light exit reflecting element 3 described below) and the optical assembly of the vehicle lamp, and generally, the included angle between the light transmission direction of the first light guide channel 12 and the light transmission direction of the second light guide channel 22 is set to be an obtuse angle.
To better explain the working process of the optical assembly for a vehicle lamp provided by the present invention, the following will be described and explained in detail with reference to the optical assembly for a vehicle lamp when applied to an illumination optical device, in which a light-emitting reflection element 3 and a light source are provided to cooperate with the optical assembly for a vehicle lamp, and the light source includes a first light source 4 corresponding to the first optical element 1 and a second light source 5 corresponding to the second optical element 2. When the illumination optical device is used, the light transmission direction of the first light guide channel 12 with the smaller refractive index faces the light outlet reflection surface 31 on the light outlet reflection element 3, and the light transmission direction of the second light guide channel 22 with the larger refractive index faces the light outlet optical path of the light outlet reflection surface 31.
The specific use process of the above-mentioned illumination optical device for forming a low beam light shape is as follows: when the first light source 4 is turned on, light emitted by the first light source 4 is incident into the first light guide channel 12 and is transmitted to the interface a along the light transmission direction of the first light guide channel 12, and at the interface a, the light is refracted and enters the second light guide channel 22 because the refractive index of the first light guide channel 12 is smaller than that of the second light guide channel 22, and is refracted and irradiated from the side wall of the second light guide channel 22 far away from the first light incident part 11 to the light emitting reflection surface 31, and is finally reflected by the light emitting reflection surface 31 and is projected to form a corresponding low beam shape 001 for the irradiation of the normal vehicle light low beam; when the second light source 5 is turned on, the light emitted from the second light source 5 enters the second light guide channel 22 and is transmitted to the interface a along the light transmission direction of the second light guide channel 22, after being totally reflected at the interface a because the refractive index of the second light guide channel 22 is greater than the refractive index of the first light guide channel 12, the light is refracted out from the side wall of the second light guide channel 22 far from the first light entering part 11 and irradiates to the light exit reflection surface 31, and the light emitted after being reflected by the light exit reflection surface 31 can enhance the illumination intensity of the low beam shape 001 close to the cut-off line region, so as to form a low beam enhanced region 004, thereby realizing the low beam enhanced function, further improving the visibility of the low beam far distance and improving the driving safety under the conditions that the high beam of the vehicle is not turned on in the urban non-highway and the high beam speed of the vehicle. The above-mentioned illumination optical device can also be used to form a high beam shape with high beam enhancement function, the specific light transmission process is the same as the process of forming a low beam shape, and the relative orientations of the first light guide channel 12 and the second light guide channel 22 and the light-emitting reflective element 3 need to be adjusted accordingly.
In the present invention, the low beam shape 001 formed has a cut-off line, and the cut-off line may be formed by a separate light shielding structure provided on the light outgoing path of the light outgoing reflection surface 31 or by a light shielding structure provided on another element in the illumination optical device. As a preferred embodiment of the optical assembly for a vehicle lamp in the present application, referring to fig. 4, a cut-off line structure b is provided at a lower boundary of the dividing surface a. The cutoff line structure b is formed in a shape of a cutoff line having a step difference on both sides and connected by oblique lines so as to form a cutoff line of the low beam shape 001. When the above illumination optical device is used to form a high beam shape, a cut-off line structure b is provided at the upper boundary of the boundary surface a. The cut-off line structure b is provided with cut-off lines which have a step difference on two sides and are connected through oblique lines, so that a light and shade cut-off line of a high beam shape can be formed, and the high beam shape is connected with the low beam shape 001.
The first light guide channel 12 and the second light guide channel 22 in the present invention are formed by different transparent materials, and can be made of one of PC, PMMA, silica gel, resin or glass. Specifically, the refractive index of the first light guide channel 12 is smaller than that of the second light guide channel 22, for example, the second light guide channel 22 may be formed by a PC material, and the first light guide channel 12 may be formed by a silica gel material.
In the present invention, in order to improve the firmness of the integral molding of the first optical element 1 and the second optical element 2 and the structural stability of the optical assembly of the vehicle lamp, the first light guide channel 12 and the second light guide channel 22 are provided with a matching embedded structure (not shown) at the interface a during the structural design. Specifically, the first light guide channel 12 may be provided with a convex portion, and the second light guide channel 22 may be provided with a concave portion capable of being fitted with the convex portion.
As a preferred embodiment of the first optical element 1 in the present application, a low-beam III-area forming structure 13 is disposed on a side wall of the first light guiding channel 12 away from the second light incident portion 21, so that when light is transmitted through the first light guiding channel 12, a part of the light forms a low-beam III-area light shape 002 through the low-beam III-area forming structure 13.
Specifically, referring to fig. 6 and 7, the low-beam III-zone forming structure 13 includes a low-beam III-zone light channel 131 connected to the first light guiding channel 12, and an end of the low-beam III-zone light channel 131 away from the first light incoming portion 11 is formed as a low-beam III-zone light outlet 132. When the light entering the first light guide channel 12 from the first light entering portion 11 is transmitted through the first light guide channel 12, a portion of the light enters the low beam III area light channel 131, exits through the low beam III area light outlet 132 to the light exit reflection surface 31, is reflected by the light exit reflection surface 31, and then is projected to the low beam III area to form the low beam III area light shape 002.
As another preferred embodiment of the first optical element 1 in the present application, referring to fig. 4 and 5, a 50L dark area forming structure 14 is disposed on a sidewall of the first light guiding channel 12 away from the second light incident portion 21, so that when light is transmitted through the first light guiding channel 12, the light irradiated to the dark area 003 of the low beam 50L is reduced on the formed low beam shape 001 by the 50L dark area forming structure 14, and the brightness of the dark area of the low beam 50L 003 is controlled to meet the requirements of regulations.
As another preferred embodiment of the optical assembly for a vehicle lamp in the present application, the first light incident portion 11 and the second light incident portion 21 are respectively provided with a plurality of light incident structures, and the plurality of light incident structures are located at the light incident end of the corresponding first light guide channel 12 or the corresponding second light guide channel 22, and may be arranged in a row or a plurality of rows. The light incident structure can be formed by taking one end of the light incident structure, which is far away from the corresponding light guide channel, as a light incident surface, and the light incident surface can be specifically a plane, a convex surface or a concave surface. Preferably, the light incident structure is configured as a light condensing cup structure to converge and collimate light incident to the light incident structure from a corresponding light source.
Based on the above-mentioned optical assembly for a vehicle lamp, the optical device for illumination provided by the second aspect of the present invention, referring to fig. 9 to 12, includes the optical assembly for a vehicle lamp, the light-emitting reflective element 3, the first light source 4 corresponding to the first light-entering part 11, and the second light source 5 corresponding to the second light-entering part 21, where a light-emitting reflective surface 31 is formed on the light-emitting reflective element 3, the light transmission direction of the first light guide channel 12 faces the light-emitting reflective surface 31, and the light transmission direction of the second light guide channel 22 faces the light-emitting optical path of the light-emitting reflective surface 31.
At this time, the light emitting direction of the light-emitting reflecting element 3 is forward, the first optical element 1 may be located on the upper side in front of the light-emitting reflecting element 3, the second light guide channel 22 is set to extend obliquely backward and upward from the first light guide channel 12, the first optical element 1 may also be located on the lower side in front of the light-emitting reflecting element 3, and the second light guide channel 22 is set to extend obliquely backward and downward from the first light guide channel 12.
In the case of a cut-off line structure b provided on the boundary surface a, the lighting optical device is mainly used in low beam and high beam applications, which are four types: the first is that the first optical element 1 is located at the upper side in front of the light-emitting reflection element 3, the second light guide channel 22 is arranged to extend from the first light guide channel 12 obliquely backwards and upwards, the cut-off line structure b is arranged at the lower boundary of the interface a, and the light in the vehicle lamp optical assembly is transmitted to the light-emitting reflection surface 31 from the upper side of the cut-off line structure b, so as to correspondingly form a low-beam light shape with a low-beam enhancement function; the second is that the first optical element 1 is positioned at the upper side in front of the light-emitting reflection element 3, the second light guide channel 22 is arranged to extend from the first light guide channel 12 obliquely backwards and upwards, the cut-off line structure b is arranged at the upper boundary of the interface a, and light rays in the car lamp optical assembly are transmitted to the light-emitting reflection surface 31 from the lower part of the cut-off line structure b, so that a high beam shape with a high beam enhancement function is correspondingly formed; the third is that the first optical element 1 is positioned at the lower side in front of the light-emitting reflection element 3, the second light guide channel 22 is arranged to extend obliquely backwards and downwards from the first light guide channel 12, the cut-off line structure b is arranged at the lower boundary of the interface a, and light rays in the vehicle lamp optical assembly are transmitted to the light-emitting reflection surface 31 from the upper side of the cut-off line structure b, so that a low-beam light shape with a low-beam enhancement function is correspondingly formed; the fourth is that the first optical element 1 is located at the lower side in front of the light-emitting reflection element 3, the second light guide channel 22 is arranged to extend obliquely backwards and downwards from the first light guide channel 12, the cut-off line structure b is arranged at the upper boundary of the interface a, and light rays in the car lamp optical assembly are transmitted to the light-emitting reflection surface 31 from the lower side of the cut-off line structure b, so that a high beam shape with a high beam enhancement function is correspondingly formed.
In the present invention, the first light sources 4 may be provided on the respective first wiring boards 6, and the second light sources 5 may be provided on the respective second wiring boards 7; the first light source 4 and the second light source 5 are preferably capable of controlling on and off independently. When the first light incident portion 11 and the second light incident portion 21 are respectively provided with a plurality of light incident structures, the first light sources 4 are arranged in one-to-one correspondence with the light incident structures on the first light incident portion 11, and the second light sources 5 are arranged in one-to-one correspondence with the light incident structures on the second light incident portion 21.
In a preferred embodiment of the light exit reflecting element 3 of the present invention, an aluminum plating layer is provided on the surface of the light exit reflecting surface 31 to increase the reflectance of the light exit reflecting surface 31 and further increase the optical efficiency of the illumination optical device. Further preferably, referring to fig. 8, the light-exiting reflecting surface 31 includes a plurality of reflecting surface grid cells arranged in a matrix form to improve the uniformity of the exiting light from the light-exiting reflecting surface 31, and further improve the uniformity of the formed light shape.
As a relatively preferred embodiment of the illumination optical device in the present invention, the illumination optical device includes a vehicle lamp optical assembly, a light-emitting reflection element 3, a light source and a circuit board, the vehicle lamp optical assembly includes a first optical element 1 and a second optical element 2 integrally formed with the first optical element 1, the first optical element 1 includes a first light-entering portion 11 and a first light-guiding channel 12 connected to a light-emitting end of the first light-entering portion 11, the second optical element 2 includes a second light-entering portion 21 and a second light-guiding channel 22 connected to a light-emitting end of the second light-entering portion 21, and an end of the first light-guiding channel 12 far from the first light-entering portion 11 is connected to an end of the second light-guiding channel 22 far from the second light-entering portion 21 to form an interface a; the light transmission direction of the first light guide channel 12 is opposite to the light transmission direction of the second light guide channel 22, and an included angle is an obtuse angle, the refractive index of the first light guide channel 12 is smaller than that of the second light guide channel 22, the first light guide channel 12 is formed by a silica gel material, and the second light guide channel 22 is formed by a PC material; the first light guide channel 12 is provided with a convex part at the interface a, the second light guide channel 22 is provided with a concave part capable of being embedded with the convex part at the interface a, the side wall of the first light guide channel 12 far away from the second light incident part 21 is provided with a low-beam III-area forming structure 13 and a 50L dark-area forming structure 14, the low-beam III-area forming structure 13 comprises a low-beam III-area light channel 131 connected with the first light guide channel 12, one end of the low-beam III-area light channel 131 far away from the first light incident part 11 is formed as a low-beam III-area light outlet 132, and the lower boundary of the interface a is provided with a cut-off line structure b; the first light entering part 11 and the second light entering part 21 are respectively provided with a plurality of light gathering cup structures as light entering structures, the light sources comprise first light sources 4 which are arranged corresponding to the light gathering cup structures on the first light entering part 11 one by one and second light sources 5 which are arranged corresponding to the light gathering cup structures on the second light entering part 21 one by one, the first light sources 4 and the second light sources 5 can be respectively and independently controlled to be on or off, and the circuit boards comprise a first circuit board 6 for mounting the first light sources 4 and a second circuit board 7 for mounting the second light sources 5; a light-emitting reflecting surface 31 is formed on the light-emitting reflecting element 3, an aluminum-plated layer is arranged on the surface of the light-emitting reflecting surface 31, and the light-emitting reflecting surface 31 comprises a plurality of reflecting surface grid units arranged in a matrix form; the light transmission direction of the first light guide channel 12 faces the light exit reflecting surface 31, and the light transmission direction of the second light guide channel 22 faces the light exit path of the light exit reflecting surface 31.
In the above-mentioned illumination optical device, in the use process, the first optical element 1 is used as the low-beam optical element, and the second optical element 2 is used as the low-beam enhancement optical element:
when a general urban non-expressway is driven and the vehicle speed is slow, the first light source 4 is turned on, the second light source 5 is turned off, light emitted by the first light source 4 is incident into the first light guide channel 12, most of the light is transmitted to the interface a along the light transmission direction of the first light guide channel 12, is refracted at the interface a and enters the second light guide channel 22, is refracted from the side wall of the second light guide channel 22 close to the light-emitting reflecting element 3 and irradiates the light-emitting reflecting surface 31, is reflected by the light-emitting reflecting surface 31 and then is projected to form a low beam shape 001 as shown in fig. 13 and 14, and under the action of the cut-off line structure b and the 50L dark space forming structure 14, the low beam shape 001 has a light-dark cut-off line and a low beam 50L 003 dark space for irradiation of normal vehicle lights and low beams; another part of the light in the first light guiding channel 12 can enter the low-beam III-region light channel 131, and exit to the light exit reflecting surface 31 through the low-beam III-region light outlet 132, and then is reflected by the light exit reflecting surface 31 to form a low-beam III-region light shape 002 as shown in fig. 13 and 14;
when the vehicle is driven on a non-highway in a city, the high beam of the vehicle is not turned on, and the vehicle speed is higher, the second light source 5 can be turned on the basis of turning on the first light source 4, the light emitted by the second light source 5 enters the second light guide channel 22 and is transmitted to the interface a along the light transmission direction of the second light guide channel 22, after being totally reflected at the interface a, the light is refracted out from the side wall of the second light guide channel 22 close to the light-emitting reflection element 3 and irradiates the light-emitting reflection surface 31, and the light emitted after being reflected by the light-emitting reflection surface 31 can enhance the illumination intensity of the near beam 001 close to the light and dark cut-off line region, so that a near beam enhancement region 004 as shown in fig. 14 is formed on the near beam 001, thereby realizing the near beam enhancement function and enhancing the visibility at the far distance of the near beam.
The turning on of the low beam enhancement function (i.e. turning on the second light source 5) may be set to be manually turned on or may be set to be automatically turned on, and the specific method steps of the automatic turning on may be seen in fig. 15, in which the setting value V is set0Between 30km/h and 80km/h, preferably between 40km/h and 60km/h, for example 50 km/h; when the vehicle speed is lower than the set value V0Or when the high beam is switched on, the dipped beam enhancing function is not switched on so as to reduce the power of the car lamp and save energy.
A vehicle according to a third aspect of the present invention includes the illumination optical device according to any one of the above aspects. Therefore, the optical assembly and the illumination optical device have all the advantages brought by the technical scheme of the embodiment of the vehicle lamp optical assembly and the illumination optical device.
As can be seen from the above description, the optical assembly for a vehicle lamp provided by the present invention is provided with the first optical element 1 and the second optical element 2 integrally formed with the first optical element 1, and the ends of the two light guide channels far away from the light incident portion are connected to form the interface a, so that when being applied to the lighting optical device, the optical assembly can be matched with the light emergent reflection element 3, so that the light incident into the first light guide channel 12 can be refracted at the interface a to enter the second light guide channel 22, then refracted from the second light guide channel 22 and irradiated to the light emergent reflection surface 31 of the light emergent reflection element 3, reflected by the light emergent reflection surface 31 and projected to form the corresponding low beam shape 001, and the light incident into the second light guide channel 22 can be totally reflected at the interface a, refracted out of the second light guide channel 22 and irradiated to the light emergent reflection surface 31 of the light emergent reflection element 3, the light rays emitted after being reflected by the light-emitting reflecting surface 31 can enhance the illumination intensity of the near light shape 001 close to the cut-off line; under the cooperation of the first optical element 1 and the second optical element 2, a low-beam enhancement function can be realized on the basis of the low-beam light shape 001, so that the visibility of the far distance of the low beam is improved; the optical assembly of the car lamp has high integration level and low production cost.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (11)
1. An optical assembly for a car lamp, comprising a first optical element (1) and a second optical element (2) integrally formed with the first optical element (1), wherein the first optical element (1) comprises a first light incident portion (11) and a first light guide channel (12) connected with a light exit end of the first light incident portion (11), the second optical element (2) comprises a second light incident portion (21) and a second light guide channel (22) connected with a light exit end of the second light incident portion (21), an end of the first light guide channel (12) far away from the first light incident portion (11) is connected with an end of the second light guide channel (22) far away from the second light incident portion (21) to form an interface (a), and a refractive index of the first light guide channel (12) is smaller than a refractive index of the second light guide channel (22);
the light transmission direction of the first light guide channel (12) is opposite to the light transmission direction of the second light guide channel (22) and forms an included angle, so that the light incident on the first light guide channel (12) from the first light incident part (11) is transmitted to the interface (a) through the first light guide channel (12) to be refracted and enter the second light guide channel (22), and is refracted out from the side wall of the second light guide channel (22) far away from the first light incident part (11) to form a low beam shape or a high beam shape, and the light incident on the second light guide channel (22) from the second light incident part (21) is transmitted to the interface (a) through the second light guide channel (22) to be totally reflected, and is refracted out from the side wall of the second light guide channel (22) far away from the first light incident part (11) to form a light shape enhancement area.
2. Automotive light optical assembly according to claim 1, characterized in that the first light guide channel (12) and the second light guide channel (22) are provided with a matching engagement at the interface (a).
3. Automotive light optical assembly according to claim 1 or 2, characterized in that a low-beam III-zone forming structure (13) is provided on a side wall of the first light guiding channel (12) remote from the second light entry portion (21).
4. The vehicle lamp optical assembly according to claim 3, wherein the low-beam III-zone forming structure (13) includes a low-beam III-zone light channel (131) connected to the first light guide channel (12), and an end of the low-beam III-zone light channel (131) away from the first light incoming portion (11) is formed as a low-beam III-zone light outlet (132).
5. Automotive light optical assembly according to claim 1 or 2, characterized in that a 50L dark space forming structure (14) is provided on a side wall of the first light guiding channel (12) remote from the second light entry portion (21).
6. Vehicle lamp optical assembly according to claim 1 or 2, characterized in that a cut-off line structure (b) is provided at the upper boundary or at the lower boundary of the interface (a).
7. The vehicular lamp optical assembly according to claim 1 or 2, wherein the first light incident portion (11) and the second light incident portion (21) are respectively provided with a plurality of light incident structures, and the light incident structures are light-gathering cup structures.
8. An illumination optical device, comprising the vehicle lamp optical assembly according to any one of claims 1 to 7, a light-emitting reflection element (3), a first light source (4) disposed corresponding to the first light-entering portion (11), and a second light source (5) disposed corresponding to the second light-entering portion (21), wherein a light-emitting reflection surface (31) is formed on the light-emitting reflection element (3), the light transmission direction of the first light guide channel (12) faces the light-emitting reflection surface (31), and the light transmission direction of the second light guide channel (22) faces the light-emitting optical path of the light-emitting reflection surface (31).
9. The illumination optical device according to claim 8, wherein a surface of the light exit reflecting surface (31) is provided with an aluminum plating layer.
10. The illumination optical device according to claim 8, wherein the light exit reflecting surface (31) comprises a plurality of reflecting surface grid cells arranged in a matrix.
11. A vehicle characterized by comprising an illumination optical device according to any one of claims 8 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110310158.9A CN113028355B (en) | 2021-03-23 | 2021-03-23 | Car light optical assembly, illumination optical device and vehicle |
| PCT/CN2021/086082 WO2022198721A1 (en) | 2021-03-23 | 2021-04-09 | Vehicle lamp optical assembly, illumination optical device, and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110310158.9A CN113028355B (en) | 2021-03-23 | 2021-03-23 | Car light optical assembly, illumination optical device and vehicle |
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| CN113028355A CN113028355A (en) | 2021-06-25 |
| CN113028355B true CN113028355B (en) | 2022-01-07 |
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| CN202110310158.9A Active CN113028355B (en) | 2021-03-23 | 2021-03-23 | Car light optical assembly, illumination optical device and vehicle |
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| CN (1) | CN113028355B (en) |
| WO (1) | WO2022198721A1 (en) |
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| WO2023201573A1 (en) * | 2022-04-20 | 2023-10-26 | 华域视觉科技(上海)有限公司 | Optical element, vehicle light module, vehicle light, and vehicle |
| TWI826310B (en) * | 2023-04-21 | 2023-12-11 | 矜輝實業有限公司 | Composite surface light-guiding car lamp lens |
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| CN113028355A (en) | 2021-06-25 |
| WO2022198721A1 (en) | 2022-09-29 |
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