Method for realizing minisize camera automatic focusing and minisize camera thereof

Abstract

A method to realize auto focusing of micro camera and a micro camera are disclosed, and the camera includes enclosure, lens mounted before the enclosure, sensor which includes imaging sensitimeter and phase detecting unit mounted in the enclosure, controller which is used to calculate the adjusting distance and direction according to the detecting signal from sensor, the focusing buffer pool which can align the sensitizing surface and focusing surface of sensor automatically, the focusing buffer pool is location adjusting mechanism driven by electromagnetism, the movable end is connected with sensor, and the other end is mounted on the rear of enclosure, when it receives the control signal for adjusting location and direction output by controller, and drives the movable end to move, and drives the sensitizing surface move to the location of focusing surface of sensor. The invention driven by electromagnetism reduces the difficulty of phone structure and manufacturing technique, and reduces the manufacturing cost, which benefits for the promotion and popularity of photograph camera with auto focusing function.

Description

technical field [0001] The invention relates to a method and device for adjusting the focus of a miniature camera, which is applicable to various miniature cameras, including those used in mobile phones. Background technique [0002] No matter how complicated the structure of the camera lens is, it can actually be regarded as a convex lens. From the basic optical principles, we can see that light from any direction other than the axis of the convex lens will be refracted after passing through the convex lens and meet at the One point, the intersection point of these rays is called the focal point, and the plane composed of all points on the clear imaging position is usually called the focal plane. For those objects in the focal plane, the camera can clearly shoot them, and the front and back of the focal plane The farther away the scene, the blurrier the image. For objects with different distances from the lens, after passing through the lens, it is necessary to focus to ob...

AI Technical Summary

Problems solved by technology

If it is applied to the miniature camera of a camera phone, it will directly lead to a higher cost of the phone, which limits its application on the camera of a camera phone

This is also the reason why there are few types of camera phones with auto-focus function on the market, so that they cannot meet the needs of mass consumers for camera phones with auto-focus functions.

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