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Imaging device and program

A technology of photographic device and photographic lens, which is applied in the direction of focusing device, installation, instrument, etc., to achieve the effect of suppressing the reduction of precision

Active Publication Date: 2014-12-31
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the technologies described in Patent Document 1 (Japanese Patent Laid-Open No. 2002-14277 ), Patent Document 2 (Japanese Patent Laid-Open No. 2010-107770 ), and Patent Document 3 (Japanese Patent Laid-Open No. 2006-208495 ) are all carried out optically. Pupil division, so the amount of light received by each solid-state imaging device at point A and point B shown in FIG. 15 is different according to the incident angle of incident light. Figure 16 As shown, the amount of light received at point A (sensitivity) differs from the amount of light received at point B at the center of the viewing angle and its periphery.

Method used

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  • Imaging device and program
  • Imaging device and program
  • Imaging device and program

Examples

Experimental program
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Effect test

no. 1 approach

[0052] First, refer to figure 1 The main configuration of the electrical system of the digital camera 10 according to the present embodiment will be described.

[0053] Such as figure 1 As shown, the digital camera 10 according to this embodiment is configured to include: an optical unit 22 configured to include a lens for forming an image of a subject; and a charge coupled device (hereinafter referred to as "CCD") disposed on the lens. behind the optical axis; and the analog signal processing unit 26, which performs various analog signal processing on the input analog signal.

[0054] Furthermore, the digital camera 10 is configured to include: an analog / digital converter (hereinafter referred to as “ADC”) 28 for converting an input analog signal into digital data; and a digital signal processing unit 30 for performing various processing on the input digital data. A digital signal processing.

[0055] In addition, the digital signal processing unit 30 incorporates a line...

no. 2 approach

[0094] In the above-mentioned first embodiment, the mode in which the phase difference AF function is activated using the signal level of the electrical signal between different pixels has been described as an example, but in the second embodiment, each A case where a plurality of electrical signals are acquired in divided pixels and the phase difference AF function is activated using these electrical signals will be described. In addition, the configuration of the digital camera 10 according to the present embodiment is the same as that of the above-mentioned first embodiment except for the configuration of the photoelectric conversion element of the CCD 24 , and thus points different from the above-mentioned first embodiment will be described below.

[0095] Figure 7 It is a schematic diagram which shows the pixel arrangement of CCD24 which concerns on this embodiment. Such as Figure 7 As shown, the pixel arrangement of the CCD24 involved in this embodiment is a Bayer ar...

no. 3 approach

[0111] In the above-mentioned second embodiment, an example was described in which the phase difference AF function is applied as an AF function, but in this third embodiment, an example is described in which the phase difference AF function and the contrast AF function are selectively applied as the AF function. way of time. In addition, since the configuration of the digital camera 10 according to this embodiment is the same as that of the above-mentioned second embodiment, points different from the above-mentioned second embodiment will be described below. In addition, in the following description, when there is no need to distinguish the first divided photoelectric conversion unit 62A, the second divided photoelectric conversion unit 62B, the third divided photoelectric conversion unit 62C, and the fourth divided photoelectric conversion unit 62D, they are referred to as “divided photoelectric conversion units”. ".

[0112] Figure 10 It is a flowchart showing an example...

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Abstract

An imaging device includes a capturing lens; an imaging element in which a pair of horizontal light receiving units receiving a pair of split light of a horizontal direction and a pair of vertical light receiving units receiving a pair of split light of a vertical direction are two-dimensionally arranged; a movement unit that moves the imaging lens in the optical axis direction; a specifying unit that specifies one of the pair horizontal light receiving units or the pair vertical light receiving units, of which the calculated absolute value of the signal amount difference is smaller; and a control unit that performs correlation computation based on the signal amount of the plural photoelectric conversion elements aligned in a direction of the specified one of the pair of horizontal light receiving units or the pair of vertical light receiving units and controls the movement unit based on the correlation computation.

Description

technical field [0001] The invention relates to a photographing device and a program with focus control function. Background technique [0002] In recent years, with the high resolution of solid-state imaging elements such as CCD (Charge Coupled Device: Charge Coupled Device) area sensor and CMOS (Complementary Metal Oxide Semiconductor: Complementary Metal Oxide Semiconductor) image sensor, digital electronic still cameras, digital video cameras , mobile phones, PDA (Personal Digital Assistant: mobile information terminal equipment) and other information devices with photography functions are in rapid demand. In addition, the above-mentioned information equipment having a photographing function is called a photographing device. [0003] As a technology related to such an imaging device, there is known a technology that utilizes image information obtained by a solid-state imaging device for the purpose of providing an imaging device that can perform high-precision AF (Auto ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/28G02B7/34G02B7/36G03B13/36H04N5/232H04N5/372
CPCG02B15/14G03B13/36G02B7/346H04N5/23212H04N5/3696G02B7/34H04N23/672H04N25/704H04N25/134
Inventor 青木贵嗣
Owner FUJIFILM CORP