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Iris controlling method for improving definition of bright object and photographing apparatus adopting the same

A technology of photographic equipment and aperture, applied in the direction of controlling exposure, optics, components of TV systems, etc., can solve problems such as deterioration of sharpness

Inactive Publication Date: 2006-01-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the iris is closed to the maximum extent, the phenomenon of diffraction of incident light is maximized, which results in the adverse effect of substantially deteriorating the sharpness of objects.

Method used

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  • Iris controlling method for improving definition of bright object and photographing apparatus adopting the same
  • Iris controlling method for improving definition of bright object and photographing apparatus adopting the same
  • Iris controlling method for improving definition of bright object and photographing apparatus adopting the same

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Embodiment Construction

[0023] Now, specific exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0024] In the following description, the same drawing reference numerals are used for the same elements even in different drawings. The matters defined in the specification, such as detailed structure and element description, etc., are provided to help comprehensive understanding of the present invention. Also, functions or constructions that are well known to those skilled in the art are omitted for clarity and conciseness.

[0025] figure 1 is a block diagram showing a photographing apparatus capable of controlling an aperture to improve sharpness of a bright subject according to an embodiment of the present invention. refer to figure 1 , photographic equipment includes lens 110, aperture 115, charge-coupled device (CCD) 120, correlated double sampling circuit / automatic gain control circuit / analog to digital converter (CDS / AGC...

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Abstract

An iris controlling method and apparatus for improving definition of a bright object, wherein the photographing apparatus includes an iris, a controlling unit for establishing a shutting level of the iris based on a brightness level of a photographed object and which is capable of limiting the iris shutting level to be less than a predetermined shutting level which is lower than the maximum shutting level of the iris, and an iris operating unit for controlling the shutting extent of the iris based on the iris shutting level established in the controlling unit. Accordingly, degradation of the definition of the object is prevented even though the photographed object is very bright.

Description

technical field [0001] The present invention generally relates to an aperture control method and a photographic device using the method. More particularly, the present invention relates to an aperture control method capable of automatically controlling the degree of opening and closing of the aperture to optimize the amount of light entering an image pickup device, and a photographic device employing the aperture control method. Background technique [0002] A photographing apparatus records a video signal generated by photographing an image of a subject and stores it in a recording medium through predetermined signal processing. An image of a subject is captured by an image pickup device included in a photographing device. [0003] In order to capture an image of a subject with high definition, the amount of light entering the image pickup device should be kept at an appropriate level. To this end, photographic devices have an aperture for controlling the amount of light ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B7/095
CPCH04N5/238G03B7/095H04N23/75H04N23/00
Inventor 权洙赫
Owner SAMSUNG ELECTRONICS CO LTD
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