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Camera device and focusing method

A technology of a camera device and a focusing method, which is applied in the focusing device, installation, image communication, etc., can solve the problem that the automatic focusing speed cannot be further improved, and achieve the effect of increasing the speed and reducing the adverse effects.

Inactive Publication Date: 2017-05-24
ALTEK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the speed of autofocus cannot be further improved
Or you want to use the image blurred by moving the lens as the basis for focusing, but there is no precise mechanism to synchronize the motor that controls the position of the lens in the lens with the image sensor, so that the effect of moving the lens on the image is consistent, so as to improve autofocus success rate

Method used

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  • Camera device and focusing method
  • Camera device and focusing method
  • Camera device and focusing method

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Embodiment Construction

[0048] figure 1 is a block diagram of an imaging device in an embodiment of the present invention. figure 2 is according to figure 1 A timing diagram of a focusing mode of the camera device in the embodiment and a schematic diagram of the corresponding image. Please refer to figure 1 , in this embodiment, the imaging device 100 includes an image sensor 110 , a lens 120 , an actuator 130 and a processing unit 140 . The lens 120 generates an image IM corresponding to an external scene on the image sensor 110 . Please refer to figure 1 and figure 2 , when the lens 120 is in focus, the image sensor 110 is in a plurality of frame times FR (such as figure 2 ) in order to convert the detected image IM into a plurality of electrical signals ES. The actuator 130 can drive the lens 120 to change the focal length. Wherein, the actuator 130 can be a stepping motor, a voice coil motor or other objects that can drive the lens 120 to move to change the focal length. The processin...

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Abstract

The invention provides an imaging device and a focusing method. The imaging device includes an image sensor, a lens, an actuator and a processing unit. The lens generates an image corresponding to the external scene on the image sensor, wherein when the lens focuses, the image sensor sequentially converts the detected image into multiple electrical signals in multiple frame times. The actuator drives the lens to change the focal length. The processing unit sequentially loads these electrical signals from the image sensor during these frame times, and when the lens is in focus, the processing unit commands the actuator to drive the lens to change the focus during a plurality of focus change times, wherein the processing unit makes these images Frame times correspond to these focus change times.

Description

technical field [0001] The present invention relates to an optical device and a focusing method, and in particular to an imaging device and a focusing method capable of fast focusing and suitable for increasing the focusing speed. Background technique [0002] With the advancement of image display and photography technology, people can record the fleeting moments in daily life in a more convenient way. Among them, digital cameras have been used in mobile phones, tablet computers, and various camera devices in recent years due to their convenient operability and the advantages of instant shooting and instant viewing. Generally speaking, in order to make it easier for users to use, digital cameras often have an auto focus (Auto Focus, AF) system. Users do not need to have professional knowledge in photography but can still easily take photos with good image quality to record life. Bit by bit. [0003] Specifically, autofocus technology refers to the technology of moving the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232H04N5/235G02B7/28G03B13/36G03B30/00
Inventor 蔡庆隆陈水淋
Owner ALTEK CORP