Pre-AA jig

Abstract

The utility model discloses a Pre-AA jig, and belongs to the technical field of camera modules. A jig body of the Pre-AA jig is used for installing a locking semi-finished product composed of a Lens and a driving assembly and used for receiving an optical signal passing through the locking semi-finished product, and a distance adjusting tool is used for adjusting the distance between the Lens and the driving assembly in the locking semi-finished product, so that the TTL value is adjusted. The TTL value is the distance between the mirror surface of the end, away from the driving assembly, of the Lens in the locking semi-finished product and a sensor used for receiving the optical signal in the jig body, and the data processor is electrically connected with the jig body and the distance adjusting tool and used for processing the optical signal into a brightness signal and recording the TTL value.

Description

Technical Field

[0001] This application belongs to the technical field of camera modules, and particularly relates to a Pre-AA jig. Background Art

[0002] With the popularization of mobile electronic devices, the related technologies of camera modules used in mobile electronic devices to help users obtain images (such as videos or pictures) have developed rapidly and advanced. In recent years, camera modules have been widely used in many fields such as medical treatment, security, and industrial production. Currently, in the field of consumer electronic devices (such as smart phones), the camera module assembly process mainly includes VA (Vcm Attach) process, HA (Holder Attach) process, and AA (Active Alignment) process.

[0003] Currently, the assembly process of the AA process camera module is to first lock the Lens into the Holder / VCM / motor to form a locked semi-finished product AA, then fix the position of the Lens by dispensing and curing, and finally attach the locked semi-finished product AA to the COB semi-finished product. However, this method is achieved by structural height determination, which only ensures the structural dimensions of the Lens in the locked semi-finished product to the Holder / VCM / motor, and cannot ensure the actual optical back focal length dimension of the Lens. And the actual AA is to ensure the optical back focal length dimension. Therefore, this solution needs to adjust the AA glue thickness to cover the optical back focal tolerance. When the back focal tolerance of the Lens is large, the AA glue thickness reserved in this solution design is too large. The optical performance of the camera module assembled by the AA process after baking is often weaker than that before baking, resulting in the optical performance of the final product being difficult to reach the ideal state, thus generating reliability risks. Summary of the Utility Model

[0004] This application aims to at least solve to a certain extent the technical problem that the AA jig in the prior art causes the accumulation of the back focal tolerance of the Lens due to structural height determination, resulting in an overly large reserved AA glue thickness. For this reason, this application provides a Pre-AA jig, which can determine the height by optical performance, thereby ensuring the reliability of the high-precision camera module assembly.

[0005] A Pre-AA jig provided by this application includes:

[0006] A jig body for installing a locked semi-finished product composed of a Lens and a driving component, and for receiving an optical signal passing through the locked semi-finished product;

[0007] A distance adjustment tooling is used to adjust the distance between the Lens and the driving component in the semi-finished product of locking, so as to adjust the TTL value. The TTL value is the distance from the mirror surface at one end of the Lens away from the driving component in the semi-finished product of locking to the sensor in the jig body for receiving the optical signal.

[0008] A data processor is electrically connected to the jig body and the distance adjustment tooling respectively, and is used for processing the optical signal into a brightness signal and for recording the TTL value.

[0009] In some embodiments, the jig body includes:

[0010] A housing is provided with a fixing groove, and the driving component is fixedly installed in the fixing groove;

[0011] An AA glue reserved position is arranged in the fixing groove and is arranged below the driving component;

[0012] A signal receiving device is installed at the bottom of the fixing groove, and the signal receiving device is electrically connected to the data processor.

[0013] In some embodiments, the signal receiving device is a COB test semi-finished product. The COB test semi-finished product includes a PCB board and the sensor. The PCB board is located at the bottom of the fixing groove, the sensor is located above the PCB board, the sensor is connected to the PCB board to form a path, and the PCB board is electrically connected to the data processor.

[0014] In some embodiments, the driving component includes Holder(12) / VCM(13) / motor(14).

[0015] In some embodiments, the distance adjustment tooling is a power driving device. The power driving device is connected to the VCM / motor, and there is a switch between the power driving device and the VCM / motor. The switch is electrically connected to the data processor.

[0016] In some embodiments, the Lens is thread-locked on the Holder to form a semi-finished product of locking. The distance adjustment tooling is a driving device, and the driving device is drivingly connected to the Lens.

[0017] In some embodiments, the driving device is a driving motor. The driving motor is drivingly connected to the Lens, and the driving motor is electrically connected to the data processor.

[0018] In some embodiments, a focus ring is arranged on the outer side of the Lens, and the rotating shaft of the driving motor is drivingly connected to the focus ring.

[0019] In some embodiments, the Pre-AA fixture further includes a simulation device, which is correspondingly arranged with the Lens11 and is used to construct a scene simulation environment.

[0020] In some embodiments, the simulation device includes a Chart, which is directly opposite to the Lens.

[0021] In some embodiments, a teleconverter is arranged between the Chart and the Lens.

[0022] The beneficial effects of the present application at least include:

[0023] A Pre-AA fixture provided by the present application, the fixture body of the Pre-AA fixture is used to install a locking semi-finished product composed of a Lens and a driving component, and is used to receive the optical signal passing through the locking semi-finished product. The distance adjustment tooling is used to adjust the distance between the Lens and the driving component in the locking semi-finished product, so as to adjust the TTL value. The TTL value is the distance from the end of the Lens mirror surface in the locking semi-finished product away from the driving component to the sensor in the fixture body for receiving optical signals. The data processor is electrically connected to the fixture body and the distance adjustment tooling respectively, and is used to process the optical signal into a brightness signal and record the TTL value. Among them, the fixture body can install the locking semi-finished product, so as to fix the locking semi-finished product on the fixture body, and can simultaneously receive the optical signal of the locking semi-finished product, specifically the optical signal of an external light source passing through the Lens. By receiving the optical signal and transmitting it to the data processor, the data processor can convert the optical signal into a brightness signal, and the data processor is connected to the distance adjustment tooling, so that the brightness signal at different adjustment positions can be known. The data processor finally obtains the TTL value corresponding to the maximum brightness signal, so as to realize finding the optimal TTL value through optical performance, avoid the technical problem of excessive accumulation of Lens back-focus tolerance caused by the method of setting height by structure, resulting in too large reserved AA glue thickness, and realize the installation of the Lens by the method of setting height by optical performance, so that the reserved AA glue thickness is kept consistent, thereby generating better stability during the installation process and use process. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0025] Figure 1The structural schematic diagram of a Pre-AA jig in an embodiment of the present application is shown.

[0026] Reference numerals: 1, jig body; 2, data processor; 3, distance adjustment tooling; 4, housing; 5, AA glue reserved position; 6, sensor; 7, PCB board; 8, focus ring; 9, Chart; 10, teleconverter; 11, Lens; 12, Holder; 13, VCM; 14, motor. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0028] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0029] In the present application, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0030] In addition, in the present application, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0031] Next, the present application will be described in conjunction with the accompanying drawings and with reference to specific embodiments:

[0032] Please refer to Figure 1, an embodiment of the present application provides a Pre-AA jig, and the Pre-AA jig provided by the embodiment of the present application can determine the height through optical performance, thereby ensuring the reliability of the assembly of the high-precision camera module.

[0033] A Pre-AA jig provided by an embodiment of the present application includes: a jig body 1 for installing a locked semi-finished product composed of a Lens 11 and a driving component, and for receiving an optical signal passing through the locked semi-finished product; a distance adjustment tooling 3 for adjusting the distance between the Lens 11 and the driving component in the locked semi-finished product, thereby adjusting the TTL value, where the TTL value is the distance from the mirror surface at one end of the Lens 11 in the locked semi-finished product away from the driving component to the sensor 6 in the jig body 1 for receiving the optical signal; a data processor 2 electrically connected to the jig body 1 and the distance adjustment tooling 3 respectively, for processing the optical signal into a brightness signal, and for recording the TTL value. Among them, the jig body 1 can install the locked semi-finished product, thereby fixing the locked semi-finished product on the jig body 1, and can simultaneously receive the optical signal of the locked semi-finished product, specifically the optical signal of an external light source passing through the Lens 11. By receiving the optical signal and transmitting it to the data processor 2, the data processor 2 can convert the optical signal into a brightness signal, and the data processor 2 is connected to the distance adjustment tooling 3, so that the brightness signal at different adjustment positions can be known. The data processor 2 finally obtains the TTL value corresponding to the maximum brightness signal, thereby realizing finding the optimal TTL value through optical performance, avoiding the technical problem of excessive accumulation of the back-focus tolerance of the Lens 11 caused by installing through the structural height determination method, resulting in an overly large reserved AA glue thickness, and realizing the installation of the Lens 11 by the optical performance height determination method, so that the reserved AA glue thickness is kept consistent, thereby generating better stability during the installation process and the use process.

[0034] In some embodiments, such as Figure 1As shown, the fixture body 1 includes: a housing 4 with a fixing groove, the driving component is fixedly installed in the fixing groove, the shape of the fixture body 1 is sleeve-shaped, and the gear of the fixture body 1 is adapted to the size of the driving component, so that the driving component can be successfully installed to fix the semi-finished product for locking; an AA glue reserved position 5, which is arranged in the fixing groove of the housing 4 and below the driving component, and the AA glue reserved position 5 is located below the fixing groove of the housing 4, so as to ensure that the position of the AA glue reserved position 5 is the same as the set position, and avoid too much AA glue filling, which affects the stability of the installation of the camera module; a signal receiving device, which is installed at the bottom of the fixing groove of the housing 4, and the signal receiving device is electrically connected to the data processor 2. The signal receiving device can receive the sensor 6 received through the Lens 11 and transmit it to the data processor 2 to complete the function of information transmission.

[0035] In some embodiments, as Figure 1 shown, the signal receiving device is a COB test semi-finished product, and the COB test semi-finished product includes a sensor 6 and a PCB board 7. The PCB board 7 is located at the bottom of the fixing groove of the housing 4, the sensor 6 is located above the PCB board 7, the sensor 6 is connected to the Lens 11 and the PCB board 7 to form a path, the PCB board 7 is electrically connected to the data processor 2, the sensor 6 is used to receive optical signals, and the PCB board 7 is used to transmit the optical signals to the data processor 2.

[0036] In some embodiments, the driving component includes a Holder 12 / VCM 13 / motor 14 to drive the Lens 11 to move through the Holder 12 / VCM 13 / motor 14 for focusing.

[0037] In some embodiments, the distance adjustment tooling 3 is a power driving device, the power driving device is connected to the VCM 13 / motor 14, the power driving device can drive the VCM 13 / motor 14 to rotate, so as to adjust the distance between the Lens 11 and the VCM 13 / motor 14. Under the drive of the VCM 13, the distance between the Lens 11 and the sensor 6 changes to realize the function of adjusting the TTL value. There is a switch between the power driving device and the VCM 13 / motor 14, and the switch is electrically connected to the data processor 2. The data processor 2 controls whether the power driving device supplies power to the VCM 13 / motor 14 by controlling the switch, and when the TTL value reaches the ideal value, the switch is controlled to close.

[0038] In some embodiments, as Figure 1As shown, the Lens11 is locked to the Holder12 by threads to form a semi-finished product with locking. The distance adjustment tooling 3 is a driving device, and the driving device is drivingly connected to the Lens11. The driving device drives the Lens11 to rotate, thereby adjusting the distance between the Lens11 and the Holder12.

[0039] In some embodiments, as Figure 1 shown, the driving device is a driving motor. The driving motor is drivingly connected to the Lens11 and electrically connected to the data processor 2. The Lens11 starts to rotate under the driving action of the driving motor, thereby realizing the distance between the Lens11 and the Holder12, and thus adjusting the TTL value.

[0040] In some embodiments, as Figure 1 shown, a focal length ring 8 is provided on the outer side of the Lens11. The rotating shaft of the driving motor is drivingly connected to the focal length ring 8. With the above structure, the Lens11 and the driving motor are adjusted through the focal length ring 8.

[0041] In some embodiments, as Figure 1 shown, the Pre-AA jig further includes a simulation device. The simulation device is correspondingly arranged with the Lens11 and is used to construct a scene simulation environment. By constructing a scene simulation environment through the simulation device, the optical signal in the scene simulation environment can sequentially pass through the Lens11 and finally be received by the jig body 1 and transmitted to the data processor 2. The data processor 2 can convert the optical signal into a brightness signal. The data processor 2 continuously adjusts the relative position between the Lens11 and the Holder12 in the semi-finished product with locking, so as to reach the position with the maximum brightness. Finally, the semi-finished product with locking is installed on the COB semi-finished product to realize the assembly of the high-precision camera module. During the assembly process, the Pre-AA jig can complete the positioning according to the optical signal and then be assembled onto the COB semi-finished product, avoiding the situation in the prior art that the structural dimensions from the Lens11 of the semi-finished product with locking to the driving component are guaranteed during the installation by the AA jig, but the actual optical back focal length dimension of the Lens11 cannot be guaranteed. In the Pre-AA jig proposed in the embodiment of the present application, the installation of the semi-finished product with locking is determined according to the actual optical properties, so that the preset AA glue thickness is kept consistent, the preset size and the actual size are made consistent, and the compensation effect of the AA glue on the actual size is avoided, thereby improving the installation stability.

[0042] In some embodiments, as Figure 1As shown, the simulation device includes Chart9, which is facing Lens11. Through Chart9, optical signals can be generated, usually scene simulation signals. Chart9 is facing Lens11, so as to ensure that the optical signals generated by Chart9 can be transmitted into Lens11.

[0043] In some embodiments, such as Figure 1 As shown, a teleconverter 10 is provided between Chart9 and Lens11. Through the teleconverter 10, the optical signals generated by Chart9 can be refracted, saving the distance between Chart9 and Lens11.

[0044] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0045] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0046] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A Pre-AA fixture, characterized in that: include: A fixture body (1) is used to install a locking semi-finished product consisting of a lens (11) and a drive component, and is used to receive an optical signal passing through the locking semi-finished product; A distance adjustment tool (3) is used to adjust the distance between the lens (11) in the semi-finished locking product and the drive assembly, thereby adjusting a TTL value, wherein the TTL value is the distance between a mirror surface of the end of the lens (11) in the semi-finished locking product away from the drive assembly and a sensor (6) in the fixture body (1) for receiving the optical signal; A data processor (2) is electrically connected to the fixture body (1) and the distance adjustment fixture (3) respectively, and is used to process the optical signal into a brightness signal, and to record the TTL value.

2. A Pre-AA fixture according to claim 1, characterized in that: The fixture body (1) includes: The housing (4) is provided with a fixing groove, and the drive assembly is fixedly mounted in the fixing groove; An AA glue reserved position (5) is arranged in the fixing groove and below the driving component; A signal receiving device is installed at the bottom of the fixing groove, and the signal receiving device is electrically connected to the data processor (2).

3. A Pre-AA fixture according to claim 2, characterized in that: The signal receiving device is a COB test semi-finished product, the COB test semi-finished product comprises a PCB board (7) and the sensor (6), the PCB board (7) is located at the bottom of the fixing groove, the sensor (6) is located above the PCB board (7), the sensor (6) is connected to the PCB board (7) to form a passage, and the PCB board (7) is electrically connected to the data processor (2).

4. A Pre-AA fixture according to claim 1, characterized in that: The drive assembly comprises a holder (12) / VCM (13) / motor (14); the distance adjustment tool (3) is an electric drive device, the electric drive device is connected to the VCM (13) / motor (14), a switch is provided between the electric drive device and the VCM (13) / motor (14), and the switch is electrically connected to the data processor (2).

5. A Pre-AA fixture according to claim 4, characterized in that: The lens (11) is screw-threadedly locked onto the holder (12) to form a semi-finished product, and the distance adjustment tool (3) is a driving device, which is drivingly connected to the lens (11).

6. A Pre-AA fixture according to claim 5, characterized in that: The driving device is a driving motor, the driving motor is drivingly connected to the Lens (11), and the driving motor is electrically connected to the data processor (2).

7. A Pre-AA fixture according to claim 6, characterized in that: A focal ring (8) is arranged on the outer side of the lens (11), and the rotating shaft of the driving motor is drivingly connected to the focal ring (8).

8. A Pre-AA fixture according to any one of claims 1 to 7, characterized in that: The Pre-AA fixture further includes a simulation device, which is arranged corresponding to the Lens 11 and is used to construct a scene simulation environment.

9. A Pre-AA fixture according to claim 8, characterized in that: The simulation device comprises a Chart (9), and the Chart (9) is directly opposite to the Lens (11).

10. A Pre-AA fixture according to claim 9, characterized in that: A teleconverter (10) is arranged between the Chart (9) and the Lens (11).

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