CN211653269U - Optical lens assembly and laser radar - Google Patents

Abstract

The embodiment of the utility model provides an optics lens subassembly and laser radar, include: an optical lens comprising a first sidewall; the elastic beam is abutted against the optical lens and provided with an inner side wall and an outer side wall which are arranged oppositely, the inner side wall is in contact with the first side wall of the optical lens, and the elastic beam is provided with an unloading groove positioned between the inner side wall and the outer side wall; the rigid support is fixedly connected with the elastic beam, the rigid support is contacted with the outer side wall of the elastic beam, and the elastic beam is positioned between the first side wall and the rigid support; when the rigid support contracts, the rigid support enables the elastic beam to generate stress, and the unloading groove elastically deforms under the stress. The embodiment of the utility model provides a technical scheme can effectively reduce the risk that optical lens piece warp.

Description

Optical lens assembly and laser radar

Technical Field

The embodiment of the utility model provides an relate to optical device technical field, especially relate to an optics lens subassembly and laser radar.

Background

The ranging module is one of the most core modules of the laser radar. The distance measuring module provides measured distance information by using the laser emitting and receiving elements. The installation of the optical lens is one of the key problems of the distance measuring module. The optical lens is extremely sensitive to stress, and the optical lens is deformed due to the change of factors such as load, temperature and the like, so that the normal use of the laser radar is seriously influenced. At present, an optical lens on the laser radar is square, and the optical lens is directly adhered and fixed on a rigid support in a common installation mode.

When the optical lens is bonded and fixed by the rigid support, the deformation of the rigid support caused by temperature change can cause the optical lens to generate stress and deform, and the normal use of the laser radar is influenced.

Disclosure of Invention

To the above-mentioned defect among the prior art, the embodiment of the utility model provides an optics lens subassembly and laser radar.

An aspect of the embodiment of the present invention provides an optical lens assembly, including:

an optical lens comprising a first sidewall;

the elastic beam is abutted against the optical lens and provided with an inner side wall and an outer side wall which are arranged oppositely, the inner side wall is in contact with a first side wall of the optical lens, and the elastic beam is provided with an unloading groove positioned between the inner side wall and the outer side wall;

the rigid support is fixedly connected with the elastic beam, the rigid support is in contact with the outer side wall of the elastic beam, and the elastic beam is positioned between the first side wall and the rigid support;

when the rigid support contracts, the rigid support enables the elastic beam to generate stress, and the unloading groove elastically deforms under the stress.

Furthermore, the two first side walls are oppositely arranged, the optical lens further comprises two second side walls which are oppositely arranged, and the positions of the two first side walls and the positions of the two second side walls are different; the outer contour of the optical lens is rectangular, four corners of the rectangle are chamfers or fillets, and the first side wall and the second side wall are connected with each other through the chamfers or the fillets.

Further, the method also comprises the following steps:

the buffer piece is positioned on the second side wall of the optical lens, is fixedly connected with the rigid support and is bonded with the optical lens; when the rigid support contracts, the rigid support enables the buffer piece to generate stress, and the buffer piece elastically deforms under the stress.

Further, the elastic beam is bonded with the rigid support, and the bonding point of the elastic beam and the rigid support is located in the middle of the unloading groove; and/or the buffer piece is bonded with the rigid support.

Further, the buffer member includes an elastic member.

Furthermore, the elastic beam and the elastic piece are integrally formed, and the connection part of the elastic beam and the elastic piece is in arc transition;

and/or the elastic piece is bonded with the optical lens;

and/or the elastic piece comprises an elastic piece, the elastic piece is fixed on the rigid support and the optical lens, the elastic piece comprises a first wall used for being in contact with the second side wall of the optical lens and a second wall used for being in contact with the rigid support, and a gap is formed between the first wall and the second wall.

Further, the elastic beam is bonded to the optical lens, the elastic beam and the buffer member are provided with bonding portions for bonding with the optical lens, and a bonding agent for bonding is contained between the upper surface of the bonding portion and the lower surface of the optical lens to form a bonding point.

Furthermore, the bonding point of the elastic beam and the buffer piece for bonding with the optical lens has an arc boundary or a linear boundary, and the normals of the arc boundary or the linear boundary of all the bonding points are intersected at one point.

Furthermore, the number of the elastic beams is two, the number of the first side walls is two, and the inner side walls of the two elastic beams are respectively contacted with the two first side walls of the optical lens; the number of the bonding points is three, wherein two bonding points are formed on the elastic beam respectively, and one bonding point is formed on the buffer piece.

Further, the rigid support comprises a flat plate part and blocking parts contacting with the outer side wall of the elastic beam, the blocking parts are located on two sides of the flat plate part, and the elastic beam and the optical lens are accommodated in an accommodating space formed by the blocking parts and the flat plate part.

Furthermore, a positioning part is arranged on the elastic beam, a matching part matched with the positioning part is arranged on the rigid support, and the positioning part and the matching part are mutually inserted to relatively position the elastic beam and the rigid support.

Further, the positioning part comprises a protrusion, and the matching part comprises a groove or a hole;

and/or the presence of a catalyst in the reaction mixture,

the locating part comprises a groove or a hole, and the matching part comprises a protrusion.

Further, the positioning part comprises a protrusion located on the outer side wall of the elastic beam, and the matching part comprises a groove located on the blocking part;

and/or the positioning part comprises a hole positioned at the end part of the elastic beam, and the hole is a through hole penetrating through the elastic beam; the matching part comprises a protrusion positioned on the flat plate part, and the protrusion is a cylinder matched with the through hole.

Further, the rigid support and the elastic beam are made of different materials, and the rigidity of the elastic beam is smaller than that of the rigid support.

An aspect of the embodiment of the present invention provides a laser radar, including a light emitter, and the optical lens assembly as described above.

The embodiment of the utility model provides an optical lens piece subassembly and laser radar, through setting up the elastic beam, and bond the elastic beam in optical lens piece, the elastic beam has inside wall and the lateral wall of relative setting, the inside wall contacts in optical lens piece's first lateral wall, the uninstallation groove that is located between inside wall and the lateral wall has on the elastic beam, rigid support and elastic beam fixed connection, rigid support has the stop part with the lateral wall contact of elastic beam, when the rigid support takes place the shrink, rigid support makes the elastic beam produce stress, elastic deformation takes place under stress in the uninstallation groove. The utility model provides a technical scheme, rigid support's shrink can produce stress on the elastic beam, and the uninstallation groove on the elastic beam can warp under the stress action to release rigid support shrink and the stress that produces on the elastic beam that leads to, and then block stress transmission to optical lens piece, greatly reduced optical lens piece's deformation risk.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic view of an optical lens assembly of the prior art;

fig. 2 is a schematic structural view of an optical lens assembly according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a rigid support according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an elastic beam and a buffer according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an elastic beam and a buffer according to another embodiment of the present invention;

fig. 6 is a schematic view of an optical lens assembly according to another embodiment of the present invention;

fig. 7 is a schematic structural view of an elastic beam and a buffer according to another embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

Furthermore, the term "coupled" is intended to include any direct or indirect coupling. Thus, if a first device couples to a second device, that connection may be through a direct connection, or through an indirect connection via other devices. The following description is of the preferred embodiment of the present invention, and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the invention. The protection scope of the present invention is subject to the limitations defined by the appended claims.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

FIG. 1 is a schematic view of an optical lens assembly according to the prior art; as shown in fig. 1, in the prior art, a cement is provided at least at positions corresponding to four corners of an optical lens 10a on a rigid mount 20a, the optical lens 10a is directly bonded to the rigid mount 20a by the cement, and the rigid mount 20a is fixedly attached to a base 30a of the apparatus by screws. In the prior art, when the support 20a deforms due to temperature change, the support 20a generates stress and transmits the stress to the optical lens 10a through the adhesive to deform the optical lens 10a, and if the rigid support 20a is stressed to bend or deform in a torsion manner, the optical lens 10a also deforms, which affects normal use of the laser radar. In order to avoid this, it is necessary to increase the rigidity of the rigid support 20 a. Because the difference between the thermal expansion coefficients of the material of the rigid support 20a and the material of the optical lens 10a is large, under a low temperature condition, the rigid support 20a with large rigidity shrinks due to a low temperature, and stress is generated in the optical lens 10a when the rigid support 20a shrinks, so that the optical lens 10a deforms, and the magnitude of the stress of the optical lens 10a is related to the structural rigidity of the rigid support 20a, and the larger the structural rigidity is, the larger the stress of the optical lens 10a is.

In order to solve the above technical problem in the prior art, the present invention provides the following embodiments for reducing the deformation risk of the optical lens.

Example one

Fig. 2 is a schematic structural view of an optical lens assembly according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of a rigid support according to an embodiment of the present invention; referring to fig. 2 to fig. 3, the optical lens assembly of the present embodiment includes: optical lens 10, rigid support 20, elastic beam 30. Further, the rigid support 20 is made of a different material from the elastic beam 30, and the rigidity of the elastic beam 30 is less than that of the rigid support 20.

For the rigid support 20, the fasteners on the rigid support 20 for connecting to external devices are evenly distributed on the rigid support 20 or symmetrically arranged about a first axis of symmetry of the rigid support 20 (the first axis of symmetry is the dotted line in fig. 3), which is parallel to the second side wall X2 of the optical lens 10 in the mounted state of the optical lens 10. In the present embodiment, the external device may be a laser radar, a photographing device, a microscope, a periscope, or the like, or other devices requiring the installation of the optical lens 10. The fasteners on the rigid support 20 for connecting to external equipment are preferably screws, and a plurality of screws may be distributed evenly on the rigid support 20 or symmetrically about the first axis of symmetry on the rigid support 20.

The optical lens 10 includes a first sidewall X1. Specifically, in the present embodiment, the overall contour shape of the optical lens 10 may be any regular or irregular shape such as a square, a circle, a diamond, a triangle, a trapezoid, a parallelogram, and the like. In some embodiments, the optical lens 10 includes two first sidewalls X1 disposed oppositely and two second sidewalls X2 disposed oppositely, the positions of the two first sidewalls X1 and the two second sidewalls X2 are different. The shape of the optical lens 10 refers to a general contour shape as a whole, for example, for a square optical lens 10, it is not necessarily a standard rectangle, and its four corners may be rounded or chamfered. The optical lens 10 may be a plane mirror, a convex lens, or a concave lens, or a combination of a plane mirror and a convex lens, etc., and the embodiment is not limited thereto.

Fig. 4 is a schematic structural view of an elastic beam and a buffer according to an embodiment of the present invention; fig. 5 is a schematic structural view of an elastic beam and a buffer according to another embodiment of the present invention; referring to fig. 2, and with reference to fig. 4 and fig. 5, the elastic beam 30 is adhered to the optical lens 10, the elastic beam 30 has an inner sidewall 31 and an outer sidewall 32 disposed opposite to each other, the inner sidewall 31 contacts at least one of the two first sidewalls X1 of the optical lens 10, and the elastic beam 30 has a relief groove 33 between the inner sidewall 31 and the outer sidewall 32.

The term "flexible beam" refers to a beam body having flexibility and being elongated. The inner side wall 31 of the elastic beam 30 is in contact with at least one of the two first side walls X1 of the optical lens 10, and the outer side wall 32 of the elastic beam 30 is a side wall of the elastic beam 30 away from the optical lens 10. The elastic beam 30 may be bonded to the optical lens 10 by a cement. The bonding points O between the elastic beam 30 and the optical lens 10 may be distributed, and in some embodiments, the elastic beam 30 and the optical lens 10 may be filled with a cementing agent. However, it can be understood that, on the premise that the elastic beam 30 and the optical lens 10 are firmly bonded, the number of the bonding points O does not need to be too large, which is a large occupied space and troublesome to process on the one hand, and on the other hand, the more the bonding points O are, even the adhesive fills the space between the inner side wall 31 of the elastic beam 30 and the first side wall X1 of the optical lens 10, so that the two are completely bonded, but the effect of the elastic beam 30 is weakened. In some embodiments, the optical lens 10 may be bonded to one elastic beam 30 by only one bonding point O. Illustratively, the glue point O may be located at a corner of the optical lens 10.

In addition, in some embodiments, the length of the elastic beam 30 may be greater than or equal to the length of the first sidewall X1 of the optical lens 10, so that there is enough position for the unloading groove 33 to be disposed, and the length of the unloading groove 33 is as long as possible, so as to prevent the vertical stress (i.e., the stress in the direction perpendicular to the first sidewall X1) from being transmitted to the optical lens 10 to the greatest extent, and to reduce the risk of deformation of the optical lens 10 to a greater extent.

In some embodiments, the distances from both ends of the unloading groove 33 to the second side wall X2 of the optical lens 10 may be equal, so that the unloading groove 33 evenly absorbs the vertical stress to both sides of the optical lens 10.

The rigid support 20 is fixedly connected with the elastic beam 30, and specifically, the rigid support 20 may be detachably connected with the elastic beam 30 by means of clamping, screwing, inserting, or the like, or may be non-detachably connected by means of welding, bonding, or the like. The rigid support 20 is provided with a stop portion 21 contacting with the outer side wall 32 of the elastic beam 30, and the elastic beam 30 is located between the first side wall X1 and the stop portion 21, wherein when the rigid support 20 contracts, the rigid support 20 contacts and presses the elastic beam 30 to generate stress on the elastic beam 30, and the unloading groove 33 elastically deforms under the stress, so as to release the stress generated on the elastic beam 30 caused by the contraction of the rigid support 20, thereby reducing or blocking the stress transmitted to the optical lens 10, and avoiding the optical lens 10 from deforming to affect the normal operation of the device. Meanwhile, the rigidity of the rigid support 20 meets the requirements of bending rigidity and torsional rigidity, and the optical lens 10 is ensured to be stably maintained at the preset installation position.

The flexible beam 30 may be a clearance fit with the rigid support 20, i.e. there is a clearance between the outer side wall 32 of the flexible beam 30 and the stop 21 of the rigid support 20. The elastic beam 30 and the rigid support 20 can be glued together, or connected through a rigid buckle structure, and the gap between the elastic beam 30 and the rigid support 20 can ensure that the unloading groove 33 has enough buffer space when stressed, so that the stress generated on the elastic beam 30 is reduced as much as possible, and further the stress transmitted to the optical lens 10 is reduced or blocked, and the optical lens 10 is prevented from deforming to influence the normal work of the equipment.

The unloading groove 33 on the elastic beam 30 may actually be an elongated hole opened along the thickness direction of the elastic beam 30, and the length of the unloading groove 33 may be as close as possible to the length of the first side wall X1 of the optical lens 10. It will be appreciated that the relief groove 33 serves to provide a space for the deformation and stress of the rigid support 20 to relieve the stress from being transmitted to the optical lens 10, and therefore, the longer the relief groove 33, the greater the stress relief effect, and the better the effect of reducing the stress of the optical lens 10.

The lengthwise direction of the unloading groove 33 may be substantially parallel to the lengthwise direction of the first sidewall X1 of the optical lens 10. When the rigid support 20 contracts in a low-temperature environment, stress is transferred from the outer side wall 32 of the elastic beam 30 to the direction of the unloading groove 33, and the beam body between the outer side wall 32 of the elastic beam 30 and the unloading groove 33 deforms toward the release space provided by the unloading groove 33, but due to the existence of the unloading groove 33, the deformation is transferred to a small part of the beam body between the unloading groove 33 and the inner side wall 31 of the elastic beam 30, so that the stress transferred to the optical lens 10 by the elastic beam 30 is small, and therefore, the deformation of the optical lens 10 is small, and the deformation risk of the optical lens 10 can be effectively reduced.

It should be noted that the description of "relative arrangement" in the embodiments of the present invention does not mean that the two components are parallel to each other, but only that the two components are approximately opposite to each other, and a certain included angle may exist between the two components.

The embodiment of the utility model provides an optical lens piece subassembly, through setting up the elastic beam, and bond the elastic beam in optical lens piece, the elastic beam has inside wall and the lateral wall of relative setting, the inside wall contacts in at least one in two first lateral walls of optical lens piece, the uninstallation groove that is located between inside wall and the lateral wall has on the elastic beam, rigid support and elastic beam fixed connection, rigid support has the stop part with the lateral wall contact of elastic beam, when rigid support takes place the shrink, rigid support makes the elastic beam produce stress, elastic deformation takes place under stress in the uninstallation groove. The utility model provides a technical scheme, rigid support's shrink can produce stress on the elastic beam, and the uninstallation groove on the elastic beam can warp under the stress action to release rigid support shrink and the stress that produces on the elastic beam that leads to, and then block stress transmission to optical lens piece, from this, can greatly reduced optical lens piece's deformation risk, improve laser radar's operational reliability.

In this embodiment, it is preferable that the outer contour of the optical lens 10 is substantially rectangular, four corners of the rectangle are chamfers or rounded corners, and the first side wall X1 and the second side wall X2 are connected to each other by the chamfers or the rounded corners.

On the basis of the above embodiment, further, the utility model provides an optical lens subassembly still includes: a buffer member 40. As shown in fig. 2, the cushion member 40 may be located on the second side wall X2 of the optical lens 10, and the cushion member 40 is fixedly connected to the rigid bracket 20 and is bonded to the optical lens 10. The buffer member 40 and the optical lens 10 are bonded together by cementing agent, the processing technique is simple, and the cost is lower. The cushion member 40 may have an adhesion portion M to be adhered to the optical lens 10, and the elastic beam 30 may have an adhesion portion M to be adhered to the optical lens 10, and the adhesive agent for adhesion is contained between the upper surface of the adhesion portion M and the lower surface of the optical lens 10 to form an adhesion point O.

Specifically, the buffer member 40 can be bonded and fixed with the rigid support 20, and the fixing mode is simple and low in cost. In this embodiment, the buffer member 40 may be an elastic member, which can deform under the action of the stress, and can counteract or absorb the transverse stress (i.e. the stress parallel to the direction of the first sidewall X1) transmitted to the optical lens 10 by the rigid support 20, so as to further reduce the stress transmitted to the optical lens 10 when the rigid support 20 contracts.

In the optical lens assembly of the present embodiment, when the rigid frame 20 contracts, the rigid frame 20 causes the buffer 40 to generate stress, and the buffer 40 elastically deforms under the stress. The buffer 40 is located at the second side wall X2, the buffer 40 can contact with the second side wall X2, when the temperature is low, the rigid support 20 contracts, the elastic beam 30 provides a vertical deformation space under the action of the unloading groove 33, the vertical stress is prevented from being transmitted to the optical lens 10, and the buffer 40 blocks the transverse stress from being transmitted to the optical lens 10, so that the stress of the optical lens 10 in the transverse and vertical directions is effectively reduced, and the risk of deformation of the optical lens 10 is further reduced.

Specifically, the elastic beam 30 may be bonded to the rigid bracket 20, and at least one bonding point P of the elastic beam 30 to the rigid bracket 20 may be located in the middle of the unloading slot 33. The elastic beam 30 is bonded with the rigid support 20, so that the fixing mode is simple and the cost is low. The adhesion point P located in the middle of the unloading groove 33 means that the adhesion point P is located in the middle of the unloading groove 33 in the longitudinal direction, and does not mean that the adhesion point P is located inside the unloading groove 33. The adhesion point P of the elastic beam 30 and the rigid support 20 is located in the middle of the unloading groove 33, so that when the rigid support 20 contracts, the stress can be transmitted to the unloading groove 33 through the adhesion point P in the middle of the unloading groove 33 as intensively as possible, and the stress applied to the optical lens 10 by the rigid support 20 can be minimized through the buffering of the unloading groove 33. In some embodiments, one spring beam 30 is bonded to the rigid support 20 by two bond points P, both located in the middle of the unloading slot 33. Alternatively, in other embodiments, one spring beam 30 is bonded to rigid support 20 by at least two bonding points P, one bonding point P located in the middle of discharge slot 33 and the other bonding points P located elsewhere in discharge slot 33.

In one embodiment, as shown in fig. 2 and 4, the elastic beam 30 may be integrally formed with the elastic member (the buffer member 40), and the connection between the elastic beam 30 and the elastic member is in a circular arc transition. The elastic member (the buffer member 40) may also be in a beam shape and be disposed in parallel with the second side wall X2 of the optical lens 10 as a whole, and both ends of the elastic member are respectively connected with the two elastic beams 30 contacting the first side wall X1 of the optical lens 10 and are in arc transition connection, so that, when the buffer member 40 is bonded and fixed with the rigid support 20, the buffer member 40 is pushed to generate stress along the transverse direction when the rigid support 20 contracts, and when the rigid support 20 contracts, the elastic beams 30 are vertically pressed, so that the buffer member 40 in arc transition connection with the buffer member has a tendency of pushing the elastic member (the buffer member 40) on the right side to bend rightwards (for example, the dotted line shown in fig. 4 is a substantially deformation direction) along the transverse direction, thereby sharing or offsetting at least a part of the transverse stress, and effectively reducing the transverse stress of the optical lens 10, further reducing the overall stress of the optical lens 10.

Further, the side of the rigid support 20 for contacting the elastic beam 30 may have a first contact bump 24 protruding toward the elastic beam 30, and the first contact bump 24 contacts the first sidewall X1 of the optical lens 10, so that the contact area is small, and the area of vertical stress transmission on the rigid support 20 is reduced.

The middle part of the elastic piece close to one side of the second side wall X2 of the optical lens 10 is provided with a second contact salient point 41 contacting with the second side wall X2, only the second contact salient point 41 of the elastic piece contacts with the second side wall X2, when the rigid support 20 contracts, stress is transferred to the optical lens 10 only from the second contact salient point 41, the transverse stress receiving area of the optical lens 10 is reduced, and gaps are formed between other areas of the elastic piece except the second contact salient point 41 and the second side wall X2, so that transverse stress can be effectively absorbed.

Fig. 5 is different from fig. 4 in that the buffer member 40 in fig. 4 is located on the right side of the elastic beam 30, the buffer member 40 in fig. 5 is located on the left side of the elastic beam 30, and in other embodiments, the buffer members 40 are disposed on both the left and right sides of the elastic beam 30, which are also within the protection scope of the present invention.

Fig. 6 is a schematic view of an optical lens assembly according to another embodiment of the present invention; fig. 7 is a schematic structural view of an elastic beam and a buffer member according to another embodiment of the present invention. As shown in fig. 6 to 7, in another alternative embodiment, the elastic beam 30 is two separate beam bodies, and the two beam bodies are independent from each other, so that the processing difficulty and the processing cost can be effectively reduced.

The elastic element (the buffer element 40) may be an elastic sheet fixed on the rigid support 20 and the optical lens 10, the elastic sheet includes a first wall Y1 for contacting with the second side wall X2 of the optical lens 10 and a second wall Y2 for contacting with the rigid support 20, and a gap is formed between the first wall Y1 and the second wall Y2. Due to the existence of the gap between the first wall Y1 and the second wall Y2 of the elastic sheet, the transverse stress when the rigid support 20 contracts can be absorbed through the gap between the first wall Y1 and the second wall Y2, thereby blocking the stress from being transmitted transversely to the optical lens 10.

Specifically, the elastic sheet may be formed by bending a steel sheet, and may have a bonding portion M for bonding with the optical lens 10, where the bonding portion M may be parallel to the lower surface of the optical lens 10, and a cementing agent is disposed between the bonding portion M of the elastic sheet and the lower surface of the optical lens 10, so that the elastic sheet is bonded to the lower surface of the optical lens 10.

The bonding part M of the elastic sheet, the first wall Y1 of the elastic sheet and the second wall Y2 of the elastic sheet are connected in sequence. Specifically, one end of the first wall Y1 of the elastic piece is connected to one side edge of the adhesive part M of the elastic piece close to the second side wall X2, the other end of the first wall Y1 of the elastic piece is connected to the second wall Y2 of the elastic piece, the first wall Y1 and the second wall Y2 may be arranged in parallel, and the first wall Y1 and the second wall Y2 may extend in the thickness direction of the optical lens 10. The adhesive portion M, the first wall Y1, and the second wall Y2 may be formed by bending a steel sheet in a predetermined shape.

In other embodiments, the structure of the elastic sheet may be other structures as long as it can provide a lateral deformation space when the rigid support 20 contracts to block the lateral stress from being transmitted to the optical lens 10, and this embodiment is not particularly limited.

As shown in fig. 3 and fig. 6, the rigid frame 20 may include a flat plate portion 22 and a blocking portion 21, the blocking portion 21 is at least located on two sides of the flat plate portion 22, and the elastic beam 30 and the optical lens 10 are accommodated in an accommodating space formed by the blocking portion 21 and the flat plate portion 22. The receiving space may be a receiving groove formed in the rigid carrier 20, a side wall of the receiving groove forming the stopper 21, and a bottom wall of the receiving groove forming the flat plate portion 22. The holding groove may be formed by opening, or the rigid support 20 may be formed by splicing a plurality of sub-supports in a split manner, and the plurality of sub-supports in the split manner form a predetermined holding groove. Preferably, the shape of the receiving groove may be substantially the same as the shape of the optical lens 10, and in some embodiments, the shape of the receiving groove may be different from the shape of the optical lens 10, but the size of the receiving groove should be larger than the size of the optical lens 10 so that the optical lens 10 can be received in the receiving groove.

In addition, the flat plate portion 22 may be provided with a light-passing hole, in which case the optical lens 10 may be a lens, or may not have a light-passing hole, in which case the optical lens 10 may be a mirror.

Further, as shown in fig. 3, a shallow groove 222 may be formed on the flat plate portion 22 of the rigid support 20, and the shallow groove 222 may be used to accommodate the bonding portion M of the elastic sheet, so that the elastic sheet is stably fixed on the rigid support 20, and after the elastic sheet is fixed on the rigid support 20, a certain gap may be formed between the bonding portion M and the lower surface of the optical lens 10, so as to facilitate accommodation of the adhesive, and avoid that the adhesive overflows to directly bond and fix the optical lens 10 and the rigid support 20, which may cause the effect of reducing or blocking transmission of transverse stress by the elastic sheet to fail.

The upper surface and the lower surface of the optical lens 10 are disposed opposite to each other, the upper surface of the optical lens 10 is a surface of the optical lens 10 away from the flat plate portion 22, and the lower surface of the optical lens 10 is a surface of the optical lens 10 close to or in contact with the flat plate portion 22.

It should be noted that, when the buffer members 40 are elastic members connected to the circular arcs at the two ends of the elastic beam 30, at least one side of the rigid bracket 20 opposite to the second side wall X2 of the optical lens 10 may be free from obstruction, that is, there is no blocking portion at the side, for example, at the position of the two second side walls X2 of the optical lens 10 as shown in fig. 2, no blocking portion contacting with the second side wall X2 is provided on the rigid bracket 20, so that the buffer members 40 connected to the circular arcs can have a space for deformation in the transverse direction when the elastic beam 30 is pressed vertically. In some embodiments, the rigid support 20 may be provided with a blocking portion at one second side wall X2 of the optical lens 10, while the rigid support 20 may be provided with a blocking portion or no blocking portion at the other second side wall X2, as desired.

When the buffer member 40 is a spring piece, at least one side of the rigid support 20 opposite to the second side wall X2 of the optical lens 10 may have a blocking portion, and the blocking portion makes the optical lens 10 fixed more stably. The elastic sheet can be fixed on the blocking part by any suitable connection mode such as bonding, welding and the like. The elastic sheet is arranged such that when the elastic beam 30 is vertically pressed, the blocking portion abuts against the elastic sheet along a side facing the optical lens 10, but due to the existence of the gap between the first wall Y1 and the second wall Y2, the elastic sheet absorbs the transverse stress applied by the blocking portion, so that the stress can be prevented from being transmitted to the optical lens 10 along the transverse direction.

In any of the above embodiments, further, as shown in fig. 4 or fig. 7, the bonding points O (for example, three solid black points in fig. 4 or fig. 7) on the elastic beam 30 and the cushion member 40 for bonding with the optical lens 10 have an arc boundary or a straight boundary, and the normals of the arc boundaries or the straight boundaries of all the bonding points O (three dotted lines connected by the three solid black points in fig. 4 or fig. 7) intersect at a point. In this way, when the rigid support 20 contracts at a low temperature, the directions of the forces applied to the optical lens 10 by the three bonding points O meet at a point, so that when the elastic beam 30 generates a stress, the torque applied to the optical lens 10 is small or does not generate a torque, which can reduce the rotation amount of the optical lens 10 after being stressed, and is beneficial to further maintaining the installation stability of the optical lens 10 and the stability of the normal operation of the optical device.

In an embodiment, as shown in fig. 4 and 7, the number of the elastic beams 30 may be two, and the inner sidewalls 31 of the two elastic beams 30 respectively contact the two first sidewalls X1 of the optical lens 10; the number of the bonding points O is three, wherein one bonding point O is formed on each of the two elastic beams 30, and one bonding point O is formed on the buffer member 40. In this way, the stress in the vertical direction of the optical lens 10 can be mostly absorbed by the unloading groove 33, so that the risk of the optical lens 10 being pressed vertically is greatly reduced, and the buffer 40 enables the stress in the transverse direction of the optical lens 10 to be mostly offset or absorbed, so that the risk of the optical lens 10 being pressed transversely is greatly reduced.

In some embodiments, as shown in fig. 2 to 6, the elastic beam 30 is provided with a positioning portion, the rigid support 20 is provided with a matching portion matching with the positioning portion, and the positioning portion and the matching portion are inserted into each other to position the elastic beam 30 and the rigid support 20 relatively. Specifically, the positioning portion may include a protrusion, and the fitting portion may include a groove or a hole; and/or, the positioning part comprises a groove or a hole, and the matching part comprises a protrusion. That is to say, the elastic beam 30 is primarily positioned by the positioning portion and the matching portion, and then the elastic beam 30 is fixedly connected with the rigid support 20 by the adhesive, so that the elastic beam 30 and the rigid support 20 are accurately positioned and assembled, and the installation accuracy is improved.

More specifically, as shown in fig. 2 and 4, the positioning part may include a protrusion 321 on the outer side wall 32 of the elastic beam 30, and the mating part includes a groove 211 on the blocking part 21; and/or, as shown in fig. 3 and fig. 6, the positioning part includes a hole at the end of the elastic beam 30, and the hole is a through hole 35 penetrating through the elastic beam 30; the engaging portion includes a projection 221 on the flat plate portion 22. More preferably, the protrusion 221 is a cylinder fitted with the through hole 35.

Of course, in other embodiments, the positioning portion and the matching portion may have other structures or be disposed at other positions, for example, the positioning portion is a protrusion, the protrusion may be disposed on the inner side surface of the rigid bracket 20, the matching portion is a groove, the groove may be disposed on the elastic beam 30, and the notch is located on the outer side wall of the elastic beam 30. Alternatively, the positioning portion is a protrusion provided on the elastic beam 30 on the side facing the flat plate portion 22, and the engaging portion is a through hole provided in the flat plate portion 22 of the rigid bracket 20. There are many structural forms and arrangement positions of the positioning portion and the matching portion, which are not illustrated in the embodiments, and those skilled in the art can design the positioning portion and the matching portion specifically according to actual needs as long as the basic positioning function of the elastic beam 30 and the rigid support 20 can be achieved.

Example two

The present embodiment provides a lidar including a light emitter and an optical lens assembly as provided in the above embodiments. The lidar may include a base to which the optical transmitter and the optical lens assembly may be removably or non-removably secured.

It should be noted that the structure and function of the optical lens assembly in the laser radar provided in this embodiment are the same as those in the first embodiment, and specific reference may be made to the description of the first embodiment, which is not repeated in this embodiment.

The embodiment of the utility model provides an optical lens subassembly, under the prerequisite that does not sacrifice rigid support 20 bending resistance and torsional rigidity, make under the low temperature rigid support 20 shrink and apply the stress on optical lens piece 10 and show the reduction, optical lens piece 10 warp the problem and is obviously improved, finally makes laser radar can normal use when temperature variation, has promoted laser radar's operational reliability and low temperature environment adaptability.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Claims (15)

1. An optical lens assembly, comprising:

an optical lens comprising a first sidewall;

the elastic beam is abutted against the optical lens and provided with an inner side wall and an outer side wall which are arranged oppositely, the inner side wall is in contact with a first side wall of the optical lens, and the elastic beam is provided with an unloading groove positioned between the inner side wall and the outer side wall;

the rigid support is fixedly connected with the elastic beam, the rigid support is in contact with the outer side wall of the elastic beam, and the elastic beam is positioned between the first side wall and the rigid support;

when the rigid support contracts, the rigid support enables the elastic beam to generate stress, and the unloading groove elastically deforms under the stress.

2. The optical lens assembly of claim 1, wherein the first sidewalls are two and oppositely disposed, the optical lens further comprising two oppositely disposed second sidewalls, the two first sidewalls and the two second sidewalls being located differently; the outer contour of the optical lens is rectangular, four corners of the rectangle are chamfers or fillets, and the first side wall and the second side wall are connected with each other through the chamfers or the fillets.

3. The optical lens assembly of claim 1, further comprising:

the buffer piece is positioned on the second side wall of the optical lens, is fixedly connected with the rigid support and is bonded with the optical lens; when the rigid support contracts, the rigid support enables the buffer piece to generate stress, and the buffer piece elastically deforms under the stress.

4. The optical lens assembly of claim 3, wherein the resilient beam is bonded to the rigid frame at a point that is in a middle of the relief groove; and/or the buffer piece is bonded with the rigid support.

5. The optical lens assembly of claim 3, wherein the buffer comprises an elastic element.

6. The optical lens assembly of claim 5, wherein the resilient beam and the resilient member are integrally formed, and a junction of the resilient beam and the resilient member is in a circular arc transition;

and/or the elastic piece is bonded with the optical lens;

and/or the elastic piece comprises an elastic piece, the elastic piece is fixed on the rigid support and the optical lens, the elastic piece comprises a first wall used for being in contact with the second side wall of the optical lens and a second wall used for being in contact with the rigid support, and a gap is formed between the first wall and the second wall.

7. The optical lens assembly of claim 3, wherein the resilient beam is bonded to the optical lens, the resilient beam and the buffer each having a bonding portion for bonding with the optical lens, a bonding agent for bonding being received between an upper surface of the bonding portion and a lower surface of the optical lens to form a bonded point.

8. The optical lens assembly of claim 7, wherein the bonding points of the elastic beam and the buffer member for bonding with the optical lens have an arc-shaped boundary or a linear boundary, and normals of the arc-shaped boundary or the linear boundary of all the bonding points intersect at a point.

9. The optical lens assembly of claim 7, wherein the number of the elastic beams is two, the number of the first sidewalls is two, and the inner sidewalls of the two elastic beams are respectively in contact with the two first sidewalls of the optical lens; the number of the bonding points is three, wherein two bonding points are formed on the elastic beam respectively, and one bonding point is formed on the buffer piece.

10. The optical lens assembly of claim 1, wherein the rigid frame includes a flat plate portion and a stop portion contacting an outer sidewall of the elastic beam, the stop portion is located on both sides of the flat plate portion, and the elastic beam and the optical lens are received in a receiving space formed by the stop portion and the flat plate portion.

11. The optical lens assembly of claim 10, wherein the resilient beam has a positioning portion, the rigid frame has a mating portion, and the positioning portion and the mating portion are inserted into each other to position the resilient beam relative to the rigid frame.

12. The optical lens assembly of claim 11, wherein the positioning portion comprises a protrusion and the mating portion comprises a groove or a hole;

and/or the presence of a catalyst in the reaction mixture,

the locating part comprises a groove or a hole, and the matching part comprises a protrusion.

13. The optical lens assembly of claim 12, wherein the positioning portion comprises a protrusion on an outer sidewall of the spring beam and the mating portion comprises a groove on the blocking portion;

and/or the positioning part comprises a hole positioned at the end part of the elastic beam, and the hole is a through hole penetrating through the elastic beam; the matching part comprises a protrusion positioned on the flat plate part, and the protrusion is a cylinder matched with the through hole.

14. The optical lens assembly of claim 1, wherein the rigid support is a different material than the resilient beam, the resilient beam having a stiffness less than a stiffness of the rigid support.

15. Lidar comprising a light emitter and an optical lens assembly according to any of claims 1 to 14.

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