Lens and lens group

Abstract

The utility model relates to the technical field of optics, and discloses a lens and a lens group. The supporting part is connected with the lens main body, and the lens main body and the supporting part form an optical cavity area; the connecting part is connected with the supporting part and is provided with a connecting side surface; the boss part is connected with the connecting part and is provided with a boss side surface and a bottom clearance surface; the connecting side face is sequentially connected with the boss side face and the bottom receding face, and glue is drained and contained through the bottom receding face, so that the connecting side face and the boss side face are smooth. By means of the mode, the side face of the lens is not affected by overflowing glue, the flatness of the side face of the lens is guaranteed, and the yield of lens products is improved.

Description

Technical Field

[0001] This utility model relates to the field of optical technology, and in particular to a lens and lens group. Background Technology

[0002] Lenses are used in various fields such as optical communication, lidar, and infrared temperature measurement imaging. Currently, lenses are usually fixed to substrates or brackets by adhesive. To ensure airtightness, a large amount of adhesive is often used. During the bonding process, some adhesive overflows from the edge of the lens and sticks to the side, affecting the flatness of the lens side and thus reducing the yield of lens products. Utility Model Content

[0003] Based on this, the present invention provides a lens and lens assembly to solve the problem in the prior art where glue overflows and sticks to the side of the lens, resulting in low flatness of the lens side and low product yield.

[0004] This utility model provides a lens, the lens comprising:

[0005] Lens body;

[0006] A support portion is connected to the lens body, and the lens body and the support portion form an optical cavity region;

[0007] The connecting portion connected to the support portion has a connecting side;

[0008] A boss portion connected to the connecting portion, the boss portion having a boss side surface and a bottom clearance surface;

[0009] The connecting side is sequentially connected to the side of the boss and the bottom clearance surface. The bottom clearance surface guides and contains the glue, making the connecting side and the side of the boss plane flat.

[0010] Preferably, the lens body is a convex lens.

[0011] Preferably, the lens body has a first inward convex surface and a second outward convex surface opposite thereto, the first inward convex surface and the second outward convex surface being used to focus light.

[0012] Preferably, the lens body further comprises: a first inclined surface connected to the connecting side, a first plane connected to the first inclined surface, and a second inclined surface connected to the first plane, wherein the second inclined surface is formed by extending downward from the second convex curved surface.

[0013] Preferably, the support portion has a third inclined surface, which, together with the first convex curved surface, forms the optical cavity region.

[0014] Preferably, the bottom clearance surface is a convex arc surface.

[0015] This utility model also provides a lens assembly, the lens assembly comprising:

[0016] Multiple lenses as described above, wherein the multiple lenses are arranged in an array;

[0017] The lenses are connected in pairs by connectors, which are used to connect all the lenses.

[0018] Preferably, a glue collection groove is formed between the boss portion and the connector to collect overflowing glue.

[0019] Preferably, the glue collection groove includes: a glue collection area connected to the connector and a bottom clearance area connected to the glue collection area, wherein the bottom clearance area and the glue collection area form a secondary collection area for overflowing glue.

[0020] Preferably, the boss portion and the connector are connected by an arc surface.

[0021] The beneficial effects of this utility model are as follows: By providing a support portion connected to the lens body, a connecting portion connected to the support portion, and a boss portion connected to the connecting portion, the lens body and the support portion form an optical cavity area; wherein, the connecting portion has a connecting side surface, and the boss portion has a boss side surface and a bottom clearance surface; the connecting side surface is sequentially connected to the boss side surface and the bottom clearance surface, and the bottom clearance surface guides and collects adhesive, making the connecting side surface and the boss side surface flat. Through the above method, when the lens of this utility model is bonded to the substrate or bracket with adhesive, the adhesive will not stick to the boss side surface and the connecting side surface, ensuring the flatness of the lens side surface and improving the product yield. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the lens in Embodiment 1 of this utility model;

[0023] Figure 2 This is a front view of the lens in Embodiment 1 of this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the lens group in Embodiment 2 of this utility model;

[0025] Figure 4 This is a front view of the lens assembly in Embodiment 2 of this utility model;

[0026] Figure 5 for Figure 4 A magnified view of a group of lenses in the middle;

[0027] Figure 6This is a schematic diagram of the lens assembly adhesive in Embodiment 2 of this utility model;

[0028] Figure 7 This is a schematic diagram of lens cutting in Embodiment 2 of this utility model.

[0029] The meanings of the labels in the attached diagram are as follows:

[0030] 100-Lens; 1-Lens body; 2-Support; 3-Optical cavity area; 4-Connecting part; 5-Boss; 6-Connector; 7-Glue collection groove; 8-Substrate; 11-First inner convex curved surface; 12-Second outer convex curved surface; 13-First inclined surface; 14-First flat surface; 15-Second inclined surface; 21-Third inclined surface; 41-Connecting side surface; 51-Boss side surface; 52-Bottom clearance surface; 53-Platform joint surface; 71-Glue collection area; 72-Bottom clearance area. Detailed Implementation

[0031] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0032] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0033] Unless otherwise defined, 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 pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0034] like Figure 1 and Figure 2 As shown, this is the lens 100 of Embodiment 1 of this utility model. The lens 100 of this utility model ensures the flatness of the side surface of the lens 100 through a novel design, while improving the product yield. The lens 100 includes a lens body 1, a support portion 2 connected to the lens body 1, a connecting portion 4 connected to the support portion 2, and a boss portion 5 connected to the connecting portion 4. The lens body 1 and the support portion 2 form an optical cavity region 3.

[0035] Further, please see Figure 1 and Figure 2The connecting part 4 has a connecting side 41, and the boss part has a boss side 51 and a bottom clearance surface 52. The connecting side 41 is connected to the boss side 51 and the bottom clearance surface 52 in sequence. The bottom clearance surface 52 guides and contains the glue, so that the glue will not overflow to the side of the lens, making the connecting side 41 and the boss side 51 flat.

[0036] In one feasible embodiment, please refer to Figure 1 The lens body 1 is a convex lens.

[0037] In one feasible embodiment, please refer to Figure 2 The lens body 1 has a first inwardly convex curved surface 11 and a second outwardly convex curved surface 12 opposite to it. The first inwardly convex curved surface 11 not only focuses the light but also reduces focal point reflection. That is, it reflects the light emitted by the VCSEL (Vertical Cavity Surface Emitting) laser chip to both sides of the optical axis, preventing the reflected light from being reflected back into the output aperture of the VCSEL laser chip and affecting its normal operation. The second outwardly convex curved surface 12 also focuses the light.

[0038] In one feasible embodiment, please refer to Figure 2 The lens body 1 further comprises: a first inclined surface 13 connected to the connecting side 41, a first plane 14 connected to the first inclined surface 13, and a second inclined surface 15 connected to the first plane 14, wherein the second inclined surface 15 is formed by extending downward from the second convex curved surface 12. Optionally, the first inclined surface 13 consists of two axially symmetrical inclined surfaces. Optionally, the first inclined surface 13 is an outwardly inclined surface. Optionally, the first inclined surface 13 is used to form a draft angle, thereby facilitating mold demolding. Optionally, the first plane 14 is located between the first inwardly convex curved surface 11 and the second outwardly convex curved surface 12, serving as the parting point of the upper mold surface of the lens 100. Optionally, the second inclined surface 15 consists of two axially symmetrical inclined surfaces, each formed by extending downward from both ends of the second convex curved surface 12. Optionally, the second inclined surface 15 is formed by extending obliquely downward from the second convex curved surface 12. Optionally, the second inclined surface 15 is formed by extending obliquely downward from the second convex curved surface 12. The second inclined surface 15 is used to protect the second convex curved surface 12 and prevent damage to the second convex curved surface 12 during demolding.

[0039] In one feasible embodiment, please refer to Figure 2 The support portion 2 has a third inclined surface 21, which, together with the first inner convex curved surface 11, forms an optical cavity region 3. Optionally, the third inclined surface 21 may consist of two axisymmetric inclined surfaces. Optionally, the third inclined surface 21 may be an outwardly inclined surface.

[0040] Optional, please see Figure 2 and Figure 5The boss portion 5 also has a planar mating surface 53, through which the lens 100 is mated to the substrate 8. Optionally, the bottom surface of the boss portion 5 and the bottom surface of the connecting portion 4 are coplanar, that is, the bottom surface of the connecting portion 4 is also a planar mating surface 53. Optionally, the bottom surface of the support portion 2 is coplanar with the bottom surface of the boss portion 5, that is, the bottom surface of the support portion 2 is also a planar mating surface 53.

[0041] In one feasible embodiment, please refer to Figure 2 The bottom clearance surface 52 is a convex arc surface. Optionally, the bottom clearance surface 52 is an arc surface with the center facing inward, which can better facilitate the flow of glue along its surface and also facilitate demolding.

[0042] like Figure 3 — Figure 7 As shown, this is the lens assembly 200 of Embodiment 2 of the present invention. The lens assembly 200 of the present invention includes: a plurality of lenses 100 and a connector 6 for connecting two lenses 100. The lenses 100 are arranged in an array; the lenses 100 are connected in pairs by the connector 6, which connects all the lenses 100. Optionally, a substrate 8 is connected to the lens assembly 200. Optionally, the substrate 8 connects to the lenses 100 via a boss portion 5.

[0043] In one feasible embodiment, please refer to Figure 4 and Figure 5 A glue collection groove 7 is formed between the boss 5 and the connector 6. The glue collection groove 7 drains and collects the overflowing glue, so that the lens 100 has a flat cut surface after cutting.

[0044] In one feasible embodiment, please refer to Figure 5 The glue collection groove 7 includes: a glue collection area 71 connected to the connector 6 and a bottom clearance area 72 connected to the glue collection area 71. Please refer to the following when applying glue. Figure 6 First, the lens assembly 200 is inverted with its bottom surface facing upwards. Then, the substrate 8, pre-applied with adhesive, is inverted and placed on the lens assembly 200. When adhesive overflows, the overflowing adhesive first flows into the bottom clearance area 72, and any further overflowing adhesive flows into the adhesive collection area 71. In this way, by setting the bottom clearance area 72 and the adhesive collection area 71, secondary collection of overflowing adhesive is achieved, further improving the flatness of the side surface after the lens is cut.

[0045] Further, please see Figure 4 , Figure 5 , Figure 6 and Figure 7The bottom clearance area 72 is a rounded shape with the center facing inwards, and the adhesive collection area 71 is a rounded shape with the center facing outwards. The bottom clearance area 72 and the adhesive collection area 71 are connected by a smooth curved surface. Optionally, the bottom clearance area 72 is formed by chamfering. After the adhesive is applied and allowed to solidify, the lens assembly 200 is flipped so that it faces upwards. Then, the connector 6 is cut along cutting lines a1 and a2, and the adhesive extending beyond cutting lines a1 and a2 is also removed, resulting in a flat side surface and ensuring the flatness of the lens 100's side surface. Finally, the substrate 8 is cut along cutting line a3.

[0046] In one feasible embodiment, please refer to Figure 4 , Figure 5 and Figure 6 The boss 5 and the connector 6 are connected by an arc surface. Optionally, the connection between the boss 5 and the connector 6 is rounded. Alternatively, the connection between the boss 5 and the connector 6 is rounded with the center facing outwards. This allows for smoother glue flow, better containment, and easier demolding.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A lens characterized by, The lens includes: Lens body (1); A support portion (2) is connected to the lens body (1), and the lens body (1) and the support portion (2) form an optical cavity region (3); A connecting part (4) connected to the support part (2), the connecting part (4) having a connecting side (41); The boss portion (5) connected to the connecting portion (4) has a boss side surface (51) and a bottom clearance surface (52). The connecting side (41) is connected in sequence to the boss side (51) and the bottom clearance surface (52). The bottom clearance surface (52) drains and contains the glue, making the connecting side (41) and the boss side (51) flat.

2. The lens of claim 1, wherein The lens body (1) is a convex lens.

3. The lens of claim 2, wherein The lens body (1) has a first inward convex surface (11) and a second outward convex surface (12) opposite thereto, the first inward convex surface (11) and the second outward convex surface (12) are used to focus light.

4. The lens of claim 3, wherein The lens body (1) also has: a first inclined surface (13) connected to the connecting side (41), a first plane (14) connected to the first inclined surface (13), and a second inclined surface (15) connected to the first plane (14), wherein the second inclined surface (15) is formed by extending downward from the second convex curved surface (12).

5. The lens of claim 4, wherein, The support (2) has a third inclined surface (21), which together with the first inner convex curved surface (11) forms the optical cavity region (3).

6. The lens of claim 1, wherein The bottom clearance surface (52) is an outwardly convex arc surface.

7. A lens set, characterized by The lens group includes: The lens according to any one of claims 1-6, wherein the plurality of lenses are arranged in an array; The lenses are connected in pairs by connectors (6), which are used to connect all the lenses.

8. The lens set of claim 7, wherein, A glue collection groove (7) is formed between the boss (5) and the connector (6) to collect overflowing glue.

9. The lens set of claim 8, wherein, The glue collection trough (7) includes a glue collection area (71) connected to the connector (6) and a bottom clearance area (72) connected to the glue collection area (71), and the bottom clearance area (72) and the glue collection area (71) form a secondary collection of overflowing glue.

10. The lens set of claim 9, wherein, The boss (5) and the connector (6) are connected by an arc surface.

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