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Device for viewfinding image and automatic focusing method thereof

An image capture device and auto-focus technology, applied in the field of photography, can solve problems such as blurred images of objects

Inactive Publication Date: 2009-01-21
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This approach is feasible for generally static objects, but for a target that may be constantly moving, when the image is actually intercepted, the target may have already left the expected position, and the result is that the target is intercepted blurred image

Method used

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  • Device for viewfinding image and automatic focusing method thereof
  • Device for viewfinding image and automatic focusing method thereof
  • Device for viewfinding image and automatic focusing method thereof

Examples

Experimental program
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Embodiment Construction

[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0012] see figure 1 , is a functional block diagram of an image capture device 100 provided by an embodiment of the present invention. The image capturing device 100 includes a lens 10 , an image sensor 20 , a focusing unit 30 and a shooting control device 40 . The image capture device 100 can specifically be a digital camera, a digital video camera, or a mobile phone with a camera.

[0013] The lens 10 can be a lens or a fixed-focus lens, which is used to image the subject onto the image sensor 20 .

[0014] The image sensor 20 is used to convert the light signal from the subject into an electrical signal, and output an electrical signal. The image sensor 20 is disposed on the image side of the lens 10 and may be a charge-coupled device or a complementary metal-oxide semiconductor. The image sensor 20 may adopt a ceramic leaded chip carrier package (Cera...

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PUM

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Abstract

The invention relates to an image capturing device, including a lens, an image sensor for converting an optical signal of a subject into an electrical signal, a focusing unit for the focusing of the image capturing device and a shooting control device for inputting shooting signals to the image capturing device. The focusing unit includes an image processing unit, a lens driving unit and a comparison unit. The image processing unit is connected with the image sensor, allowing that when the lens is located at different locations, the analysis and calculation on the electronic signals outputted by the image sensor can be applied to obtain the location of the lens in case of the accurate focusing of the image capturing device. The lens driving unit can move the lens to the location of accurate focusing. The comparison unit is used for judging the movement of the subject leads to the lowering of the image quality beyond the regulated scope before the image capturing device shoots the subject and is used for determining whether the re-focusing on the image capturing device is required. In addition, the invention also provides an automatic focusing method of the image capturing device.

Description

technical field [0001] The present invention relates to photographing technology, in particular to an image capture device and an automatic focusing method thereof. Background technique [0002] With the rapid development of multimedia technology, digital cameras, video cameras and mobile phones with cameras are more and more favored by consumers, and auto-focus technology is also more and more widely used. Autofocus is a function set on the image capture device to automatically focus on the subject through electronic and mechanical devices, and achieve a clear image. [0003] When the current image capture devices such as digital cameras and video cameras with auto-focus function are shooting the target object, after pressing the focus button, they will execute the focusing action. This approach is feasible for generally static objects, but for a target that may be constantly moving, when the image is actually intercepted, the target may have already left the expected posi...

Claims

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Application Information

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IPC IPC(8): H04N5/225H04N5/232
CPCH04N5/23212H04N23/673
Inventor 姜林易达
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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