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1. (WO2012132827) IMAGING DEVICE, AND FOCUS CONTROL METHOD THEREFOR
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2012/132827 International Application No.: PCT/JP2012/056024
Publication Date: 04.10.2012 International Filing Date: 08.03.2012
IPC:
G02B 7/28 (2006.01) ,G02B 7/34 (2006.01) ,G03B 13/36 (2006.01) ,H04N 5/232 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7
Mountings, adjusting means, or light-tight connections, for optical elements
28
Systems for automatic generation of focusing signals
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7
Mountings, adjusting means, or light-tight connections, for optical elements
28
Systems for automatic generation of focusing signals
34
using different areas in a pupil plane
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
13
Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
32
Means for focusing
34
Power focusing
36
Autofocus systems
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
222
Studio circuitry; Studio devices; Studio equipment
225
Television cameras
232
Devices for controlling television cameras, e.g. remote control
Applicants:
青木 貴嗣 AOKI, Takashi [JP/JP]; JP (UsOnly)
井上 知己 INOUE, Tomoki [JP/JP]; JP (UsOnly)
富士フイルム株式会社 FUJIFILM Corporation [JP/JP]; 東京都港区西麻布2丁目26番30号 26-30, Nishiazabu 2-chome, Minato-ku, Tokyo 1068620, JP (AllExceptUS)
Inventors:
青木 貴嗣 AOKI, Takashi; JP
井上 知己 INOUE, Tomoki; JP
Agent:
中島 淳 NAKAJIMA, Jun; 東京都新宿区新宿4丁目3番17号 HK新宿ビル7階 太陽国際特許事務所 TAIYO, NAKAJIMA & KATO, Seventh Floor, HK-Shinjuku Bldg., 3-17, Shinjuku 4-chome, Shinjuku-ku, Tokyo 1600022, JP
Priority Data:
2011-08003331.03.2011JP
Title (EN) IMAGING DEVICE, AND FOCUS CONTROL METHOD THEREFOR
(FR) DISPOSITIF DE CAPTURE D'IMAGES, ET PROCÉDÉ DE COMMANDE DE MISE AU POINT DE CELUI-CI
(JA) 撮像装置及びその合焦制御方法
Abstract:
(EN) The present invention provides an imaging device and a focus control method therefor, wherein the focus is controlled with high accuracy by detecting the focus position and by reducing the effect of distortions caused by a rolling shutter without having to dispose additional circuits. An imaging device for performing a reading operation by means of the rolling shutter method with regard to an imaging element in which a plurality of first lines arranged with phase difference detection pixels (1x) and a plurality of second lines arranged with phase difference detection pixels (1y) are alternately arranged, wherein the phase difference amount is obtained by performing a correlation operation on the signals read from a set of phase difference detection pixels (1x) and phase difference detection pixels (1y), a distortion amount caused by the rolling shutter is obtained by performing a correlation operation on the signals read from at least one of the sets from among the set of phase difference detection pixels (1x) arranged on the first lines and the set of phase difference detection pixels (1y) arranged on the second lines, and the focus is controlled by correcting the phase difference amount with the distortion amount.
(FR) L'invention fournit un dispositif de capture d'images et un procédé de commande de mise au point de celui-ci qui détecte une position de mise au point et assure une commande de mise au point d'une précision élevée, en atténuant l'influence d'une distorsion due à un rolling shutter, sans agencement d'un circuit supplémentaire. Plus précisément, l'invention concerne un dispositif de capture d'images dans lequel est effectuée une commande de lecture à l'aide d'une technique de rolling shutter sur un élément de capture d'images présentant un arrangement en alternance d'une pluralité de premières lignes dans lesquelles sont arrangés des pixels de détection de déphasage (1x), et d'une pluralité de secondes lignes dans lesquelles sont arrangés des pixels de détection de déphasage (1y). Lors de la commande de mise au point, une quantité de déphasage est recherchée par un calcul de corrélation de signaux lus à l'aide de la combinaison des pixels de détection de déphasage (1x) et des pixels de détection de déphasage (1y); une quantité de distorsion est recherchée à l'aide du rolling shutter par calcul de corrélation de signaux lus à l'aide de la combinaison des pixels de détection de déphasage (1x) disposés sur les premières lignes et/ou à l'aide des pixels de détection de déphasage (1y) disposés sur les secondes lignes; et la quantité de déphasage est corrigée à l'aide de la quantité de distorsion.
(JA)  本発明は、追加回路を設けることなく、ローリングシャッタによる歪みの影響を軽減して合焦位置を検出し精度高く合焦制御する、撮像装置及びその合焦制御方法を提供する。位相差検出画素1xを配列した第1のラインと位相差検出画素1yを配列した第2のラインとを交互に複数配列した撮像素子に対しローリングシャッタ方式で読出制御を行なう撮像装置において、位相差検出画素1x及び位相差検出画素1yの組から読み出された信号の相関演算を行なって位相差量を求め、第1のライン上に配置された位相差検出画素1xの組、及び第2のライン上に配置された位相差検出画素1yの組の少なくとも一方の組から読み出された信号の相関演算を行なってローリングシャッタによる歪み量を求め、位相差量を歪み量で補正して合焦制御する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)