Autofocus motor having imaging lens group on portable video camera device

Abstract

The invention discloses an autofocus motor having an imaging lens group on a portable video camera device. The autofocus motor comprises a housing and a base, wherein the base is fixedly connected with a terminal having an electrical connection effect; the housing is fixedly connected to the base and is characterized by comprising a carrier, a magnet, an upper reed, a lower reed and a lens group; a coil is coaxially disposed on the periphery of the carrier; the lens group is coaxially mounted in the inner cavity of the carrier; the upper reed and the lower reed are disposed on the end faces of the two sides of the carrier respectively and ensure that the carrier, the coil and the lens group move linearly in a cavity defined by the magnet; and the magnet is correspondingly disposed on the periphery of the coil. There is no need to place or displace the lens group by a lens barrel, which contributes to the requirements for miniaturization and thinning of the portable video camera device.

Description

technical field [0001] The invention relates to the technical field of imaging equipment production, in particular to an autofocus motor with imaging lens groups on a portable imaging equipment. Background technique [0002] In the existing auto-focus camera module, the motor and the imaging lens group are fixed to each other in two ways: one is screw fit, that is, the lens group is first assembled in the lens barrel with screw teeth, and then the lens barrel is screwed into the motor , and then dispense glue to fix the lens barrel. Due to factors such as injection molding and molds, it is difficult to control the torque between the lens barrel and the motor, and it is easy to generate dust due to the friction between the two screws; the other Also, the lens group is assembled in the lens barrel first, but the lens barrel adopts a screwless method, and the lens barrel is directly inserted into the same screwless motor and then glued to fix it. Although this assembly method h...

AI Technical Summary

Problems solved by technology

[0002] In the existing auto-focus camera module, the motor and the imaging lens group are fixed to each other in two ways: one is screw fit, that is, the lens group is first assembled in the lens barrel with screw teeth, and then the lens barrel is screwed into the motor , and then dispense glue to fix the lens barrel. Due to factors such as injection molding and molds, it is difficult to control the torque between the lens barrel and the motor, and it is easy to generate dust due to the friction between the two screws; the other Also, the lens group is assembled in the lens barrel first, but the lens barrel adopts a screwless method, and the lens barrel is directly inserted into the same screwless motor and then glued to fix it. Although this assembly method has no problems such as torque, but The precision of assembly is required to be very high, and the investment in the equipment used for assembly is also large

[0003] In addition, the above two methods occupy a relatively large space due to the presence of a lens barrel between the lens group and the motor carrier, which will have a greater impact on improving the lens aperture and lens pixels, and cannot meet the needs of mobile phones or portable camera equipment. Requirements for miniaturization and thinning

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