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Image pickup apparatus and storage medium

A technology for imaging equipment and storage units, which is applied in image communication, instruments, televisions, etc., can solve the problems that it is not easy to realize small-sized and energy-saving imaging equipment, and it is difficult to save power, and achieve miniaturization and energy saving. Effect

Inactive Publication Date: 2009-02-11
CANON KK
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Problems solved by technology

However, if the driving current for focusing, the driving current for the iris, the driving current for the ND filter, etc. are added to the peak current that flows during reverse zooming, it will be difficult to Achieve power saving
As a result, it is not easy to realize a small-sized and energy-saving imaging device
[0009] Because there are exposure differences due to focal plane changes and f-number changes during variable magnification operations, it is difficult to miniaturize and save energy in an image pickup apparatus equipped with a high-magnification variable magnification lens

Method used

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  • Image pickup apparatus and storage medium
  • Image pickup apparatus and storage medium

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Embodiment Construction

[0024] The present invention will now be described in detail with reference to the accompanying drawings showing preferred embodiments of the invention.

[0025] FIG. 1 is a block diagram schematically showing the structure of an imaging apparatus according to an exemplary embodiment of the present invention.

[0026] In FIG. 1 , an imaging apparatus 100 includes a variable magnification lens (hereinafter, referred to as a zoom lens) 10, a focus lens (hereinafter, referred to as a focus lens) 12, an aperture shutter unit 13 including an aperture and a shutter, and an optical The imaging element 14 that converts the image into an electrical signal.

[0027] The imaging apparatus 100 also includes a gain amplifier 120 that amplifies the analog signal output of the imaging element 14 to set the sensitivity of the camera, and an A / D converter 16 that converts the analog signal output of the imaging element 14 into a digital signal.

[0028] In addition, the imaging apparatus 100 ...

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Abstract

The invention relates to an image pickup apparatus and storage medium. The image pickup apparatus which is capable of being downsized and being power-saved, and is capable of following the focal plane and controlling the exposure during the variably-magnifying operation. There is stored information on a position of a focus lens corresponding to a position of a zoom lens, which is dependent on an object distance. The focus lens is moved based on the stored information when the zoom lens is moved. When a moving direction of the zoom lens is switched, the focus lens is stopped, and then the moving direction of the zoom lens is switched. The focus lens is moved based on the stored information after the switching.

Description

technical field [0001] The present invention relates to an imaging apparatus including a variable magnifying function of variably magnifying a subject image using a zoom lens or the like and a focus correction function of correcting a focal plane shifted by the variable magnifying function, and a storage medium storing a control program for controlling the imaging device. Background technique [0002] Conventionally, an image pickup apparatus is known that is provided with an image pickup element and a zoom function (variable magnification function) that moves a set of plural lenses in an optical axis direction to variably magnify. [0003] In recent years, in such image pickup apparatuses, the demand for high-power variable magnification lenses has remarkably increased. Since the focal plane is largely shifted in the variable magnification operation by using the high-power variable magnification lens, it is desirable to make the high-power variable magnification lens track...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/08G02B7/10H04N5/225H04N5/232
CPCH04N5/23241H04N5/232H04N5/23212H04N23/67H04N23/651
Inventor 植山辉彦
Owner CANON KK
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