EP4130555A1

EP4130555A1 - Headlamp optical assembly, illumination device, headlamp, and vehicle

Info

Publication number: EP4130555A1
Application number: EP21823130.6A
Authority: EP
Inventors: Zhiping QIU; Keyang ZHU; He ZHU; Wenhui SANG
Original assignee: HASCO Vision Technology Co Ltd
Current assignee: HASCO Vision Technology Co Ltd
Priority date: 2020-06-09
Filing date: 2021-03-26
Publication date: 2023-02-08
Also published as: JP2023522758A; EP4130555A4; JP7456000B2; CN112781003A; WO2021248981A1

Abstract

A headlamp optical assembly, comprising a light converging element (1) and a lens mount (2). A cavity suitable for accommodating the light converging element (1) is formed on the lens mount (2), engagement structures suitable for engagement with each other are formed in the cavity and on the light converging element (1), and the light converging element (1) is embedded in the cavity by means of the engagement structures. Also disclosed are an illumination device comprising the headlamp optical assembly, a headlamp, and a vehicle comprising the headlamp. According to the headlamp optical assembly, the engagement structures capable of engagement into each other are provided on the light converging element (1) and the lens mount (2), allowing for connection between the light converging element (1) and the lens mount (2), thereby ensuring the mounting accuracy between the two, and improving the optical efficiency.

Description

Cross-Reference to Related Application

The present disclosure claims priority of Chinese patent application with the filing number 202010519122.7 filed on June 9, 2020 , the contents of which are incorporated herein by reference in entirety.

Technical Field

The present disclosure relates to vehicle lamps, in particular, to a headlamp optical assembly. Furthermore, the present disclosure also relates to an illumination device comprising the headlamp optical assembly, a headlamp and a vehicle.

Background Art

Among the illumination devices in the vehicle headlamps, Matrix type headlamp illumination device can subdivide a high beam lighting area into multiple lighting areas, so as to realize the high beam adaptive function, shield the target in front of the vehicle, and avoid dazzling other road users, thereby improving driving safety.
The primary optical element (such as reflecting mirror and light collimating element) in the Matrix type headlamp illumination device is a core component of the Matrix type headlamp illumination device. The primary optical element needs to precisely orient the emergent light of the light source to generate an intermediate light distribution, which is further modulated by the secondary optical element (such as a lens) to obtain the desired light shape distribution. Therefore, the requirements for the manufacturing accuracy and assembly accuracy of the primary optical element and the secondary optical element are very high. However, the installation and connection relationship between the individual components in the existing Matrix type headlamp illumination device is as follows: the support plate is fixedly connected to the heat sink provided with the circuit board by screws, the primary optical element is fixed on the support plate, the pressure plate cover is arranged above the primary optical element and is fixedly connected with the support plate by screws to limit the primary optical element; the secondary optical element is installed on the front end of the lens mount, and the rear end of the lens mount is fixedly connected with the heat sink. Due to the large number of parts installed, the accuracy of the relative positions between the primary optical element, secondary optical element and lens mount is affected by multiple times of positioning, installation and connection between the support plate and the pressure plate, between the support plate and the heat sink, and between the lens mount and the heat sink, that is, there are multiple assembly errors between the three, resulting in insufficient relative position accuracy between the individual optical elements.
Based on the above reasons, it is difficult in the prior art to effectively ensure relatively high accuracy of the relative positions between the individual optical elements.

Summary

The problem to be solved by a first aspect of the present disclosure is to provide a headlamp optical assembly, which has a simple structure and high relative position accuracy of each part.
In addition, the problem to be solved by a second aspect of the present disclosure is to provide an illumination device, which has a simple structure and high relative position accuracy of each part in the illumination device.
Further, the problem to be solved by a third aspect of the present disclosure is to provide a headlamp, which has a simple structure and high relative position accuracy of each part in the headlamp.
Further, the problem to be solved by a fourth aspect of the present disclosure is to provide a vehicle, which has a simple structure of a headlamp and high relative position accuracy of each part in the headlamp.
In order to solve the above-mentioned technical problems, the first aspect of the present disclosure provides a headlamp optical assembly, which comprises a light collimating element and a lens mount, wherein a cavity suitable for accommodating the light collimating element is formed on the lens mount, engagement structures suitable for engagement with each other are formed in the cavity and on the light collimating element, and the light collimating element is embedded in the cavity by means of the engagement structures.
As a preferred embodiment, the engagement structures comprise an embedded part provided on an inner peripheral wall of the cavity and an embedded groove provided at a front end of the light collimating element.
Preferably, the light collimating element and the lens mount are formed as an integral molded part.
Preferably, the embedded part is formed by surrounding the inner peripheral wall of the cavity, and a plurality of through holes penetrating through the embedded part are formed on the embedded part.
More preferably, the embedded groove is a groove body suitable for the embedded part to be embedded, and cylindrical bodies that can be embedded in the through holes in a one-to-one correspondence are integrally formed in the embedded groove.
Further preferably, the embedded groove is integrally formed around a light-emitting part of the light collimating element.
As another preferred embodiment, the light collimating element comprises a plurality of alignment units, and a single alignment unit comprises a light-incident part, a light-guide part and a light-emitting part, the individual light-emitting parts are integrally formed as a light-emitting part of the light collimating element, and a wedge-shaped gap is formed between every two light-guide parts, and an opening of the wedge-shaped gap gradually decreases in a light-emitting direction.
More preferably, a longitudinal sectional area of each of the light-guide parts gradually decreases from front to back.
As another preferred embodiment, the longitudinal sectional area of the lens mount decreases first and then increases from front to back, and the embedded part is provided at a smallest position of the longitudinal sectional area.
Typically, an installation part is provided on the lens mount, and the installation part is provided in a middle area of the lens mount.
As a specific structural form, at least one installation part is provided on an upper part of the lens mount, and at least two installation parts are provided on a lower part of the lens mount.
As another specific structural form, the installation part is formed as a groove structure with a forward opening, and a cylinder or a circular truncated cone is provided in the groove structure, and the cylinder or circular truncated cone passes through the groove structure and is provided with an installation through hole or a blind hole with a rearward opening.
In addition, the second aspect of the present disclosure provides an illumination device, which comprises a secondary optical element, the headlamp optical assembly according to any one of technical solutions of the first aspect, a positioning part configured to position a rear end of the headlamp optical assembly, a light source, a circuit board electrically connected to the light source and a heat sink from front to back in sequence, wherein the secondary optical element is connected to a front end of the headlamp optical assembly, and the headlamp optical assembly, the positioning part and the circuit board are fixedly connected to the heat sink.
As a specific embodiment, a plurality of spacer ribs are provided on the positioning part, a positioning opening is formed between two adjacent spacer ribs, and each positioning opening is provided in a one-to-one correspondence with the light source.
More specifically, a sectional shape of each of the spacer ribs is a rectangle or a circle.
As another specific embodiment, a gap is formed between a rear end surface of the installation part and the heat sink.
More specifically, a flanging is formed at a rear end of the lens mount, and a rear side surface of the flanging is suitable for being attached to the circuit board; or the flanging is formed at the rear end of the lens mount, a boss is formed on the rear side surface of the flanging, and an end surface of the boss is suitable for being attached to the circuit board.
In addition, the third aspect of the present disclosure provides a headlamp, which comprises the illumination device according to any one of the technical solutions of the second aspect.
Further, the fourth aspect of the present disclosure also provides a vehicle, which comprises the headlamp according to the third aspect.
Through the above-mentioned technical solutions, the headlamp optical assembly of the present disclosure includes a light collimating element and a lens mount, wherein a cavity suitable for accommodating the light collimating element is formed on the lens mount, engagement structures suitable for engagement with each other are formed in the cavity and on the light collimating element, and the light collimating element is embedded in the cavity by means of the engagement structures. In the headlamp optical assembly of the present disclosure, the engagement structures capable of engaging with each other are provided on the light collimating element and the lens mount, thereby ensuring the mounting accuracy between the two, and improving the optical efficiency.
Other advantages of the present disclosure and the technical effects of the preferred embodiments will be further described in the following specific embodiments.

Brief Description of Drawings

FIG. 1 is a first structural schematic view of a specific embodiment of a headlamp optical assembly of the present disclosure;
FIG. 2 is a second structural schematic view of a specific embodiment of the headlamp optical assembly of the present disclosure;
FIG. 3 is a top view of a specific embodiment of the headlamp optical assembly of the present disclosure;
FIG. 4 is an A-A sectional view of FIG. 3;
FIG. 5 is a side view of a specific embodiment of the headlamp optical assembly of the present disclosure;
FIG. 6 is a B-B sectional view of FIG. 5;
FIG. 7 is a structural schematic view of a specific embodiment of a lens mount of the present disclosure;
FIG. 8 is a structural schematic view of a specific embodiment of a light collimating element of the present disclosure;
FIG. 9 is a first structural schematic view of a specific embodiment of an illumination device of the present disclosure;
FIG. 10 is a side view of a specific embodiment of the illumination device of the present disclosure;
FIG. 11 is a C-C sectional view of FIG. 10;
FIG. 12 is a partial enlarged schematic view of part D of FIG. 11;
FIG. 13 is a first schematic view of an installation structure of a positioning part, a light source and a circuit board of the present disclosure;
FIG. 14 is a second schematic view of the installation structure of the positioning part, the light source and the circuit board of the present disclosure;
FIG. 15 is a structural schematic view of a specific embodiment of the positioning part of the present disclosure;
FIG. 16 is a second structural schematic view of a specific embodiment of the illumination device of the present disclosure;
FIG. 17 is a third structural schematic view of a specific embodiment of the illumination device of the present disclosure; and
FIG. 18 is a fourth structural schematic view of a specific embodiment of the illumination device of the present disclosure.

Reference numerals:

1-light collimating element;	101-alignment unit;
1011-light-incident part;	1012-light-guide part;
1013-light-emitting part;	1014-embedded groove;
1015-cylindrical body;	102-wedge-shaped gap;
2-lens mount;	201-embedded part;
2011-through hole;	202-installation part;
203-flanging;	3-secondary optical element;
4-positioning part;	401-positioning opening;
402-spacer rib;	403-installation hole;
5-light source;	6-circuit board;
7-heat sink;	8-screw.

Detailed Description of Embodiments

The specific embodiments of the present disclosure will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and the protection scope of the present disclosure is not limited to the following specific embodiments.
In the description of the present disclosure, it should be explained that the orientation or positional relations indicated by terms such as "front" and "rear" are based on orientation or positional relations as shown in the drawings, merely for facilitating the description of the present disclosure and simplifying the description, in the present disclosure, front and rear refer to the light path in a main transmission direction after the lights are converged by the light collimating element 1. The end where the light enters is the rear end, and the end where the light exits is the front end, that is, the end where the light source 5 is located is the rear end, and the end where the secondary optical element 3 is located is the front end.
In the description of the present disclosure, it should be noted that, unless otherwise definitely specified and limited, the terms "mount" and "connect" should be understood in a broad sense, for example, they can be fixed connection, detachable connection or integrated connection; they can be directly attached or indirectly attached by intermediate medium. Connection can be the internal communication between two components or the interaction relationship between two components. For those ordinarily skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific situation.
As shown in FIG. 1 to FIG. 6, the present disclosure provides a headlamp optical assembly, which comprises a light collimating element 1 and a lens mount 2, wherein a cavity suitable for accommodating the light collimating element 1 is formed on the lens mount 2, engagement structures suitable for engagement with each other are formed in the cavity and on the light collimating element 1, and the light collimating element 1 is embedded in the cavity by means of the engagement structures.
In the existing headlamp optical assembly, the light collimating element 1 and the lens mount 2 are important components of the headlamp optical assembly, and the two are positioned indirectly, which will cause installation errors due to multiple positioning. The installation accuracy between the light collimating element 1 and the lens mount 2 will directly affect the light-emitting effect of the headlamp. Therefore, engagement structures for engaging with each other are formed on the light collimating element 1 and the lens mount 2 of the present disclosure, so that the light collimating element 1 and the lens mount 2 are directly connected and positioned, thereby reducing the positioning and installation error, and improving the installation accuracy between the two.
There are two structural forms for the engagement of the light collimating element 1 and the lens mount 2 in the present disclosure. As one of the structural forms, the light collimating element 1 and the lens mount 2 are preferably formed as an integral molded part. Through the engagement structure, the positioning accuracy between the light collimating element 1 and the lens mount 2 is higher.
It should be noted here that, because the light collimating element 1 and the lens mount 2 are an integral molded part, the light collimating element 1 and the lens mount 2 may be made of the same material or different materials. Preferably, the light collimating element 1 and the lens mount 2 are made of different materials, the light collimating element 1 may be formed from a material (such as silica gel) with better heat resistance and optical performance, and the lens mount 2 may be formed from a material (such as PC, PMMA, etc. or mixtures thereof) with better rigidity, so as to facilitate to better support the light collimating element 1, thereby enhancing stability thereof.
Simultaneously, the lens mount 2 and the light collimating element 1 are integrally formed by using an insert molding process, and the molding process thereof is shown in FIG. 4 and FIG. 6: first, the lens mount 2 is molded by injection; then, the lens mount 2 is put into the mold for injection molding of the light collimating element 1, and after pouring the material, an integral molded part of the lens mount 2 and the light collimating element 1 can be obtained. Of course, other molding processes and methods that can realize the integrated structure can also be used for the lens mount 2 and the light collimating element 1, for example, two-color injection molding can also be used.
As shown in FIG. 7 and FIG. 8, as a preferred embodiment of the present disclosure, the engagement structure comprises an embedded part 201 provided on an inner peripheral wall of the cavity and an embedded groove 1014 provided at a front end of the light collimating element 1, simultaneously, the embedded groove 1014 is integrally formed around the light-emitting part of the light collimating element 1, so that the engagement structure can be provided at the front end of the light collimating element 1, which can effectively improve the rigidity of the light-emitting part 1013.
As shown in FIG. 7, a cavity for accommodating the light collimating element 1 is formed on the lens mount 2, and the cavity is penetrating back and forth, and embedded part 201 is formed on the surrounding inner side wall of the cavity, and the embedded part 201 extends from the periphery to the center, which is formed by surrounding the inner peripheral wall of the cavity and is in a shape of a thin plate. A plurality of through holes 2011 penetrating through the embedded part 201 are formed on the embedded part 201.
As can be seen from FIG. 8, the embedded groove 1014 is a groove body suitable for the embedded part 201 to be embedded, and a cylindrical body 1015 that can be embedded in the through hole 2011 in a one-to-one correspondence is integrally formed in the embedded groove 1014.
In addition, the embedded groove 1014 is integrally formed around the light-emitting part of the light collimating element 1.
From this, it can be seen that the engagement structure of the present disclosure is to engage the embedded part 201 in the embedded groove 1014, simultaneously, in order to make the engagement structure firmer and the engagement strength higher, the cylindrical body 1015 and the through hole 2011 are also engaged together, and this engagement structure can firmly engage the light collimating element 1 and the lens mount 2 into one piece. In addition, it should be noted that when the light collimating element 1 and the lens mount 2 are firmly engaged into one, the two are inseparable. FIG. 7 and FIG. 8 are shown as two parts, which is only to show the specific structures of the two.
As another structural form of the engagement of the light collimating element 1 and the lens mount 2, the lens mount 2 is formed as a split type structure, which can be in a form of being separated up and down, or can also be in a form of being separated left and right, at this time, the through hole 2011 on the embedded part 201 is replaced by a snapping groove with an opening, and the snapping groove can be snapped on the cylindrical body 1015. This structure can ensure the installation accuracy of the light collimating element 1 and the lens mount 2, and simultaneously, is more convenient for installation. During installation, the split type lens mount 2 is closed, and the snapping hole and the cylindrical body 1015 are snapped to engage the light collimating element 1 and the lens mount 2; when disassembling, the split type lens mount 2 is opened, that is, and the light collimating element 1 and lens mount 2 are separated.
As shown in FIG. 8, as another preferred embodiment of the present disclosure, the light collimating element 1 comprises a plurality of alignment units 101, and a single alignment unit 101 comprises a light-incident part 1011, a light-guide part 1012 and a light-emitting part 1013, the individual light-emitting parts 1013 are integrally formed as a light-emitting part of the light collimating element 1, and a wedge-shaped gap 102 is formed between every two light-guide parts 1012, and an opening of the wedge-shaped gap 102 gradually decreases in a light-emitting direction, and the longitudinal sectional area of each light-guide part 1012 gradually decreases from front to back.
The function of the alignment unit 101 is to converge and collimate the incident light, wherein a single alignment unit 101 comprises a light-incident part 1011, a light-guide part 1012 and a light-emitting part 1013, the light-incident parts 1011 and the light-guide parts 1012 of the single alignment unit 101 are in one-to-one correspondence, the light-emitting parts 1013 of all the alignment units 101 are connected with each other to form the light-emitting part of the light collimating element 1, that is to say, the light collimating element 1 has a plurality of light-incident parts 1011 and light-guide parts 1012, but only one light-emitting part of the light collimating element 1 is shared. In addition, the light-emitting part of the light collimating element 1 is integrally formed in the cavity of the lens mount 2, and the light-emitting part of the light collimating element 1 and the lens mount 2 are integrally formed, which can ensure the positional stability of the light-emitting part. This is because that the light-emitting part of the light collimating element 1 is an important optical surface that affects the light shape effect. That is to say, as for the light-emitting part of the light collimating element 1, during installation and use, the light-emitting part may be deformed by heat and force to affect the light shape effect. Therefore, it is integrally formed with the lens mount 2 to reduce or even avoid the deformation of the light-emitting part of the light collimating element 1, thereby making the light emitted more stably.
More preferably, the longitudinal sectional area of the lens mount 2 decreases first and then increases from front to back, and the embedded part 201 is provided at a smallest position of the longitudinal sectional area.
The longitudinal sectional area of the lens mount 2 is made into a shape in which the sectional area decreases first and then increases from front to back. The smallest part of the sectional area is a position where the light-emitting part of the light collimating element 1 is located. This design reduces the space occupied by the lens mount 2, and can have more space for the heat sink 7 to be provided. Compared with lens mount 2 whose sectional area gradually increases from the front end to the rear end in the prior art, the lens mount 2 of the present disclosure can make the structure of the connected parts related more compact.
As another preferred embodiment of the present disclosure, an installation part 202 is provided on the lens mount 2, and the installation part 202 is provided in a middle area of the lens mount 2.
Further preferably, at least one installation part 202 is provided on an upper part of the lens mount 2, and at least two installation parts 202 are provided on a lower part of the lens mount 2, in this way, the three installation parts 202 can form a triangular installation structure on one plane, so that the installation point of the lens mount 2 and the heat sink 7 is more stable.
It should be noted here that, as shown in FIG. 17, an installation part 202 fixedly connected to the heat sink 7 is provided in the middle of the lens mount 2, so that the installation part 202 is closer to the center of gravity of the headlamp optical assembly and the lens, which greatly improves the vibration stability of the illumination device. The middle area is located at the middle area of the front-and-rear length of the lens mount 2, that is, within a quarter area forward and backward from the midpoint of the lens mount 2.
Further, the installation part 202 is formed as a groove structure with a forward opening, and a cylinder or a circular truncated cone is provided in the groove structure, and the cylinder or circular truncated cone passes through the groove structure and is provided with an installation through hole or a blind hole with a rearward opening. The groove structure can effectively improve the strength thereof without increasing the thickness of the installation part 202 as much as possible, and the cylinder or the circular truncated cone is provided in the groove structure, which can improve the installation strength of the lens mount 2 and the heat sink 7, simultaneously, when the gap between the installation part 202 and the heat sink 7 is out of tolerance, it can be processed and adjusted by only adjusting the rear end surface of the cylinder or the circular truncated cone, and the adjustment amount is smaller. Of course, what is arranged in the groove structure is not only limited to the cylinder or the circular truncated cone, but can also be a cuboid or other structures, which will not affect the installation of the installation part 202 and the heat sink 7.
In addition, the second aspect of the present disclosure also provides an illumination device, which comprises a secondary optical element 3, the headlamp optical assembly according to any one of above-mentioned technical solutions, a positioning part 4 configured to position a rear end of the headlamp optical assembly, a light source 5, a circuit board 6 electrically connected to the light source 5 and a heat sink 7 from front to back in sequence, wherein the secondary optical element 3 is connected to a front end of the headlamp optical assembly, and the headlamp optical assembly, the positioning part 4 and the circuit board 6 are fixedly connected to the heat sink 7.
It should be noted here that the secondary optical element 3 of the present disclosure is preferably a lens, and the lens is connected to the front end of the lens mount 2. The connection method thereof can be laser welding, gluing or fastening connection, etc., or other suitable connection methods can also be used.
As shown in FIG. 15, as a specific structural form of the present disclosure, a plurality of spacer ribs 402 are provided on the positioning part 4, a positioning opening 401 is formed between two adjacent spacer ribs 402, and each positioning opening 401 is provided in a one-to-one correspondence with the light source 5.
In the above-mentioned technical solutions, wedge-shaped gaps 102 is formed between a plurality of alignment units 101 of the light collimating element 1. In order to ensure the accuracy of the relative positions between the light-incident parts 1011 of the plurality of alignment units 101 and the light source 5 on the circuit board 6, a positioning part 4 for positioning each light-incident part 1011 is also provided in the illumination device of the present disclosure, several spacer ribs 402 are provided in the positioning part 4, the positioning opening 401 for the alignment unit 101 to pass through and position is formed between two adjacent spacer ribs 402, the positioning openings 401 are in one-to-one correspondence with the light sources 5 provided on the circuit board 6, and the plurality of alignment units 101 may be arranged in one row or in multiple rows. Correspondingly, the positioning openings 401 may be arranged in a row, or may be arranged in multiple rows. The light-incident part 1011 of each alignment unit 101 may be inserted into the corresponding positioning opening 401 to be positioned, so that the light-emitting part 1013 and the light-incident part 1011 of the light collimating element 1 are both positioned, and the front end of the light collimating element 1 and the secondary optical element 3 are positioned directly, and the rear end is positioned to the light source 5 through the positioning part 4, so that the positioning accuracy of the light collimating element 1 can be effectively improved, and the light-emitting effect can be improved.
Specifically, as can be seen from FIG. 9 to FIG. 12, the spacer rib 402 is in a shape of division plate, the transverse sectional width of the positioning opening 401 is gradually narrowed from front to back, and the transverse sectional width of the alignment unit 101 is also gradually narrowed from front to back, but the narrowing degree of the positioning opening 401 is greater than that of the alignment unit 101, which can make the contact area between the alignment unit 101 and the spacer rib 402 as small as possible. On the one hand, it is convenient for guiding during insertion, on the other hand, small area contact can ensure positioning accuracy, therefore, more specifically, the contact between the alignment unit 101 and the spacer rib 402 is a line contact. It can be seen from this that the spacer rib 402 may also be a cylinder, that is, the sectional shape of the spacer rib 402 is a rectangle or a circle, and forms a line contact with the alignment unit 101.
The installation structure of the positioning part 4 is shown in FIG. 13 and FIG. 14, which is fixedly connected to the heat sink 7 through two screws 8 and the circuit board 6.
As another specific structural form of the present disclosure, a gap is formed between the rear end surface of the installation part 202 and the heat sink 7.
As can be seen from FIG. 18, the installation part 202 and the heat sink 7 are fixedly connected by fastener (such as screws, bolts, etc.), and when the fastener is tightened, the lens mount 2 is stressed so that the rear end surface of the lens mount 2 is tightly attached to the circuit board 6, so to ensure the relative position reliability between the light collimating element 1 and the light source 5. Simultaneously, in order to prevent over-positioning between the lens mount 2 and the heat sink 7 in a front-rear direction, a corresponding gap should be left between the installation part 202 and the heat sink 7 to avoid improper installation of the lens mount 2 and the heat sink 7 caused by manufacturing errors.
As another specific structural form of the present disclosure, a flanging 203 is formed at a rear end of the lens mount 2, and a rear side surface of the flanging 203 is suitable for being attached to the circuit board 6.
As an optional structural form of the above-mentioned specific structural form, the flanging 203 is formed at the rear end of the lens mount 2, a boss is formed on the rear side surface of the flanging 203, and an end surface of the boss is suitable for being attached to the circuit board 6.
Further, a third aspect of the present disclosure also provides a headlamp, which comprises the illumination device according to any one of the above-mentioned technical solutions.
Further, a fourth aspect of the present disclosure also provides a vehicle, which comprises the headlamp according to the above-mentioned technical solutions.
It can be seen from the above description that the headlamp optical assembly of the present disclosure includes a light collimating element 1 and a lens mount 2, wherein a cavity suitable for accommodating the light collimating element 1 is formed on the lens mount 2, engagement structures suitable for engagement with each other are formed in the cavity and on the light collimating element 1, and the light collimating element 1 is embedded in the cavity by means of the engagement structures. The headlamp optical assembly of the present disclosure can effectively improve the positioning accuracy between the light collimating element 1 and the lens mount 2, can ensure good light-match performance, improve optical efficiency, and obtain ideal illumination light shape by providing the engagement structures that can be engaged with each other on the light collimating element 1 and the lens mount 2.
In addition, the light collimating element 1 and the lens mount 2 are preferably integral molded part, and the engagement structures provided on the two can be engaged with each other, which can reduce the installation error between the two, thereby improving the installation accuracy between the light collimating element 1 and the lens mount 2, and ensuring the light-emitting effect.
The preferred embodiments of the present disclosure have been described in detail above with reference to the drawings. However, the present disclosure is not limited to the specific details of the above-mentioned embodiments, within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
In addition, it should be noted that the specific technical features described in the above-mentioned specific embodiments can be combined in any suitable manner unless they are inconsistent. In order to avoid unnecessary repetition, various possible combinations are not described in the present disclosure.
In addition, the various embodiments of the present disclosure can also be combined arbitrarily, as long as they do not violate the spirit of the present disclosure, they should also be regarded as the contents disclosed in the present disclosure.

Claims

A headlamp optical assembly, comprising a light collimating element (1) and a lens mount (2), wherein a cavity suitable for accommodating the light collimating element (1) is formed on the lens mount (2), engagement structures suitable for engagement with each other are formed in the cavity and on the light collimating element (1), and the light collimating element (1) is embedded in the cavity by the engagement structures.
The headlamp optical assembly according to claim 1, wherein the engagement structures comprise an embedded part (201) provided on an inner peripheral wall of the cavity and an embedded groove (1014) provided at a front end of the light collimating element (1).
The headlamp optical assembly according to claim 2, wherein the light collimating element (1) and the lens mount (2) are formed as an integral molded part.
The headlamp optical assembly according to claim 3, wherein the embedded part (201) is formed by surrounding an inner peripheral wall of the cavity, and a plurality of through holes (2011) penetrating through the embedded part (201) are formed on the embedded part (201).
The headlamp optical assembly according to claim 4, wherein the embedded groove (1014) is a groove body suitable for the embedded part (201) to be embedded, and cylindrical bodies (1015) that can be embedded in the through holes (2011) in a one-to-one correspondence are integrally formed in the embedded groove (1014).
The headlamp optical assembly according to claim 5, wherein the embedded groove (1014) is integrally formed around a light-emitting part of the light collimating element (1).
The headlamp optical assembly according to claim 2, wherein the light collimating element (1) comprises a plurality of alignment units (101), and a single alignment unit (101) comprises a light-incident part (1011), a light-guide part (1012) and a light-emitting part (1013), individual light-emitting parts (1013) are integrally formed as a light-emitting part of the light collimating element (1), and a wedge-shaped gap (102) is formed between every two light-guide parts (1012), and an opening of the wedge-shaped gap (102) gradually decreases in a light-emitting direction.
The headlamp optical assembly according to claim 7, wherein a longitudinal sectional area of each light-guide part (1012) gradually decreases from front to back.
The headlamp optical assembly according to any one of claims 2 to 8, wherein a longitudinal sectional area of the lens mount (2) decreases first and then increases from front to back, and the embedded part (201) is provided at a smallest position of the longitudinal sectional area.
The headlamp optical assembly according to claim 9, wherein an installation part (202) is provided on the lens mount (2), and the installation part (202) is provided in a middle area of the lens mount (2).
The headlamp optical assembly according to claim 9, wherein at least one installation part (202) is provided on an upper part of the lens mount (2), and at least two installation parts (202) are provided on a lower part of the lens mount (2).
The headlamp optical assembly according to claim 9, wherein the installation part (202) is formed as a groove structure with a forward opening, and a cylinder or a circular truncated cone is provided in the groove structure, and the cylinder or the circular truncated cone passes through the groove structure and is provided with an installation through hole or a blind hole with a rearward opening.
An illumination device, comprising a secondary optical element (3), the headlamp optical assembly according to any one of claims 1 to 12, a positioning part (4) configured to position a rear end of the headlamp optical assembly, light sources (5), a circuit board (6) electrically connected to the light source (5) and a heat sink (7) from front to back in sequence, wherein the secondary optical element (3) is connected to a front end of the headlamp optical assembly, and the headlamp optical assembly, the positioning part (4) and the circuit board (6) are fixedly connected to the heat sink (7).
The illumination device according to claim 13, wherein a plurality of spacer ribs (402) are provided on the positioning part (4), a positioning opening (401) is formed between two adjacent spacer ribs (402), and each positioning opening (401) is provided in a one-to-one correspondence with a light source (5).
The illumination device according to claim 14, wherein a sectional shape of each of the spacer ribs (402) is a rectangle or a circle.
The illumination device according to any one of claims 13 to 15, wherein a gap is formed between a rear end surface of the installation part (202) and the heat sink (7).
The illumination device according to any one of claims 13 to 15, wherein a flanging (203) is formed at a rear end of the lens mount (2), and a rear side surface of the flanging (203) is suitable for being attached to the circuit board (6); or
the flanging (203) is formed at the rear end of the lens mount (2), a boss is formed on the rear side surface of the flanging (203), and an end surface of the boss is suitable for being attached to the circuit board (6).
A headlamp, comprising the illumination device according to any one of claims 13 to 17.
A vehicle, comprising the headlamp according to claim 18.