Base suitable for unthreaded lens AA

Abstract

According to the base suitable for the unthreaded lens AA, the glue overflow groove and the limiting groove are arranged in the inner cavity of the base, the glue overflow groove is arranged at the glue dispensing position after the lens is assembled, the lens and the base are easily fixed through glue, reliability and stability are improved, after glue dispensing, the glue is not prone to flowing to the sensor to cause stains, the height of the limiting groove is designed according to the TTL of the actual lens, and the service life of the lens is prolonged. And when the exactly assembled lens is used for AA with a sensor plate, the AA can obtain a clear point of the lens to smoothly carry out AA, the limitation of the TTL of the lens is met, and a clamp is not needed for limiting and fixing.

Description

Technical Field

[0001] The utility model relates to the technical field of a threadless lens base, in particular to a threadless lens AA base. Background Art

[0002] As the car's autonomous driving progresses from L2 to L4, visual perception has become the core driving force. On-board cameras should have higher reliability and stability, and the demand and dependence on the automated production equipment industry are increasing. In the packaging process of on-board cameras, the superposition of errors from multiple assemblies will cause more and more problems with the product. Traditional threaded combination lenses cannot be adjusted for these errors. The final result may cause the captured image to deviate from the center of the picture, and the clarity of different areas varies greatly. The industry uses threadless lenses for AA to solve this existing problem, ensuring the relative position of the components during the assembly process, and the threadless lenses will not be screwed into the lens base threads to produce stains. Due to the limitations of the product structure and AA equipment, threadless lenses cannot be used for AA using AA lenses. In the prior art, the camera module is first equipped with a base, and then the threadless lens AA (AA lens) is performed. There are many alignment operation steps involved, and a fixture is usually used to limit the position to ensure the stability and accuracy of the lens during assembly and alignment with the sense board. The alignment process is complicated, the time cost is high, and the operation technology requirements are high. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a base which can save the use of a clamp to limit the position of a threadless lens AA, thereby saving costs and improving efficiency.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A base suitable for a threadless lens AA, comprising a base body and an inner cavity inside the base body in which the threadless lens is placed, the upper body of the inner cavity is provided with a glue overflow groove, the lower body of the inner cavity is provided with a limiting groove, the threadless lens is placed axially between the glue overflow groove and the limiting groove of the inner cavity, and the limiting groove is used to limit the bottom of the threadless lens.

[0006] Furthermore, the first edge of the glue overflow groove is arranged at the upper part of the contact surface between the outer shell of the threadless lens away from its optical surface and the base body, the second edge of the glue overflow groove is connected to the base body, and the low-temperature curing glue is applied along the first edge of the glue overflow groove to fix the threadless lens outer shell assembled on the base body.

[0007] Furthermore, the glue overflow groove is a plurality of continuous inverted trapezoidal grooves, square grooves or inverted triangular groove structures.

[0008] Furthermore, the limiting groove has a contour matching the shape of the bottom of the threadless lens, and the base body and the threadless lens are fastened by a snap-in manner, that is, the limiting groove is provided with a snap-in groove, and there is at least a symmetrical set of snap-in hooks on the bottom shell of the lens, and after the lens is inserted into the base, the snap-in hooks of the lens can be completely snapped into the snap-in groove.

[0009] Furthermore, there are two limit grooves, and their horizontal heights are consistent.

[0010] Furthermore, the limiting groove and the threadless lens are reinforced by AA glue after being installed in place.

[0011] Furthermore, the height of the limiting groove is equal to the distance of the threadless lens TTL (lens first surface inverted image surface (sensor imaging surface) minus the reserved height of the AA glue.

[0012] Furthermore, the glue overflow groove and the limiting groove are integrally formed with the base body.

[0013] Furthermore, the base body also includes an annular structure connected to the external driving mechanism connection port to achieve control of the lens.

[0014] The utility model arranges an overflowing glue groove and a limiting groove in the inner cavity of the base. The overflowing glue groove is arranged at the glue dispensing position after the lens is assembled, so that the lens and the base are easily fixed by glue, thereby improving reliability and stability. After the glue is dispensed, the glue is not easy to flow to the sensor to cause stains. The height of the limiting groove is designed according to the TTL of the actual lens, so that when the assembled lens is used for AA with the sensor board later, it is ensured that AA can obtain the clear point of the lens and smoothly perform AA, and the limit of the lens TTL is met, and there is no need to limit and fix it by a clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic cross-sectional view of a base suitable for a threadless lens AA;

[0017] Figure 2 Schematic diagram of the lens. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0019] It should be noted that the terms “first”, “second” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation methods.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] See also Figure 1 , Figure 2 In one embodiment of the utility model, a base suitable for a threadless lens AA includes a base body 1 and an inner cavity 2 in which a threadless lens 3 is placed. The upper body of the inner cavity is provided with a glue overflow groove 21, and the lower body of the inner cavity is provided with a limiting groove 22. The threadless lens 3 is placed axially between the glue overflow groove 21 and the limiting groove 22 of the inner cavity.

[0022] In this embodiment, the threadless lens 3 is first installed into the inner cavity 2 of the base, specifically in the inner cavity 2 axially between the overflow glue groove 21 and the limit groove 22. The overflow glue groove 21 is glued on the surface of the threadless lens 3 near the first edge 211 to stabilize and reinforce the threadless lens 3. The limit groove 22 is used to limit the bottom of the threadless lens 3. The overflow glue groove 21 and the limit groove 22 are used to replace the traditional method of fixing and limiting the threadless lens 3 and the base with a clamp. The threadless lens 3 is assembled first by AA, and then the assembled lens 3 is AA with the sense board.

[0023] In this embodiment, the first side surface 211 of the overflow glue groove 21 is arranged at the upper part of the contact surface between the outer shell of the threadless lens 3 away from its optical surface and the base body 1, and the second side surface 212 at the bottom of the overflow glue groove 21 is connected to the base body 1. The first side surface 211 of the overflow glue groove is fixed along the outer shell of the threadless lens 3 assembled on the base body 1 with low-temperature curing glue. In this way, when the outer shell of the threadless lens 3 and the base body 1 are fixed with glue on the first side surface 211 of the overflow glue groove, the glue overflowing from the contact point can be accommodated, and the second side surface 212 of the overflow glue groove is connected to the base body 1, and the overflowed glue is not easy to flow to the sensor to cause stains.

[0024] In this embodiment, the overflow glue groove 21 is a plurality of continuous inverted trapezoidal grooves. The multi-groove continuous structure can guide the overflowed glue in the groove and increase the area in the groove, so that the overflowed glue can be quickly solidified in the groove, and the overflow glue is not easy to flow out of the overflow glue groove 21 again.

[0025] It is understandable that in other embodiments, the structural shape of the glue overflow groove 21 can adopt other structures such as a square groove or an inverted triangle groove structure.

[0026] In this embodiment, the limiting groove 22 has a contour matching the bottom shape of the threadless lens 3, and the base body 1 and the threadless lens 3 are fastened by a snap-in manner, that is, the limiting groove 22 is provided with a snap-in groove, and the bottom shell of the lens has at least a symmetrical set of hooks 31. After the lens is inserted into the base, the hooks of the lens can be completely snapped into the snap-in groove, so that the threadless lens 3 can be fixed on the limiting groove 22 without affecting the subsequent AA with the sensor board after assembly to obtain the clear point of the lens and perform AA smoothly.

[0027] In this embodiment, there are two limiting grooves 22, and their horizontal heights are consistent.

[0028] In this embodiment, the limiting groove 22 and the threadless lens 3 are reinforced by AA glue after being installed in place. The AA glue has the characteristics of strong strength and fast curing, and is used to fill and fix the gap between the lens and the limiting groove, playing a role of fixing and sealing.

[0029] In this embodiment, the height of the limit groove 22 is equal to the TTL of the unthreaded lens (the distance from the first surface of the lens to the inverted image surface (sensor imaging surface) minus the reserved height of the AA glue. After the glue is cured, it meets the semi-finished product that needs to be AA. In order to ensure that the TTL of the lens 3 is within the specification range and can obtain the lens clear point when performing AA with the sensor board later, the reserved height of the AA glue needs to be removed.

[0030] In this embodiment, the glue overflow groove 21 and the limiting groove 22 are integrally formed with the base body 1 .

[0031] In this embodiment, the base body 1 further includes an annular structure connected to the connection port of the external driving mechanism to achieve control of the lens 3 .

[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A base suitable for a threadless lens AA, comprising a base body and an inner cavity in the base body for placing the threadless lens, characterized in that: The upper body of the inner cavity is provided with a glue overflow groove, and the lower body of the inner cavity is provided with a limiting groove. The threadless lens is placed axially between the glue overflow groove and the limiting groove of the inner cavity, and the limiting groove is used to limit the bottom of the threadless lens.

2. The base for the non-threaded lens AA according to claim 1, characterized in that: The first side surface of the overflow glue groove is arranged at the upper part of the contact surface between the shell of the threadless lens away from the optical surface thereof and the base body, and the second side surface of the overflow glue groove is connected to the base body.

3. The base for the non-threaded lens AA according to claim 2, characterized in that: The first side surface of the overflow glue groove is fixed with low-temperature curing glue along the threadless lens housing assembled on the base body.

4. The base for the threadless lens AA according to claim 3, characterized in that: The glue overflow grooves are a plurality of continuous inverted trapezoidal grooves, square grooves or inverted triangular groove structures.

5. The base for the non-threaded lens AA according to claim 1, characterized in that: The limiting groove has a profile that matches the shape of the bottom of the threadless lens. The limiting groove is provided with a card slot. There is at least a symmetrical set of card hooks on the bottom shell of the threadless lens. After the threadless lens is inserted into the base, the card hook of the lens can be completely inserted into the card slot.

6. The base for the non-threaded lens AA according to claim 5, characterized in that: There are two limit grooves, and their horizontal heights are consistent.

7. The base for the non-threaded lens AA according to claim 6, characterized in that: After the limiting groove and the threadless lens are installed in place, they are reinforced by AA glue.

8. The base for the non-threaded lens AA according to claim 7, characterized in that: The height of the limiting groove is equal to the TTL distance of the threadless lens minus the reserved height of the AA glue.

9. The base for a non-threaded lens AA according to claim 1, characterized in that: The glue overflow groove and the limiting groove are integrally formed with the base body.

10. The base for a non-threaded lens AA according to claim 1, characterized in that: The base body also includes an annular structure connected to the external drive mechanism connection port.

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