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Photographing apparatus

專(zhuān)利號(hào)
US10027894B2
公開(kāi)日期
2018-07-17
申請(qǐng)人
RICOH IMAGING COMPANY, LTD.(JP Tokyo)
發(fā)明人
Masakazu Terauchi; Masashi Miyata
IPC分類(lèi)
G03B17/00; H04N5/228; H04N5/335; H04N5/232; H04N5/217; H04N5/225; H04N5/238; H04N9/07; H04N101/00
技術(shù)領(lǐng)域
lpf,image,mtf,diaphragm,lens,sensor,resolving,slr,shake,filter
地域: Tokyo

摘要

A photographing apparatus includes a photographing optical system having a diaphragm and a photographing lens; an image sensor; a driver which drives a shake-correction member in a plane orthogonal to the optical axis to make the object-emanating light rays incident on pixels of the image sensor that have different in detection colors to obtain an optical low-pass filter effect, wherein the image sensor and/or a lens element-constitutes the shake-correction member; a retriever which retrieves information on an aperture diameter of the diaphragm and on a resolving power of the photographing lens; and a drive controller which varies a range of the pixels, having different detection colors and on which the object-emanating light rays are incident, in accordance with the information on the aperture diameter of the diaphragm and/or on the resolving power of the photographing lens to vary the optical low-pass filter effect.

說(shuō)明書(shū)

FIG. 6 is a graph illustrating, at times before and after a low-pass filter operation is performed, variations in intensity distribution of a point image at f4 in the digital SLR camera;

FIG. 7 shows graphs illustrating the difference between image forming states due to differences of resolving power (MTF), wherein (A) is a graph illustrating the intensity distribution of an object, (B) is a graph illustrating the intensity distribution of the object in the case where resolving power (MTF) is high, and (C) is a graph illustrating the intensity distribution of the object in the case where resolving power (MTF) is low; and

FIG. 8 shows graphs (A) and (B) showing different embodiments of the path of movement for an image sensor in an operation of the digital SLR camera which provides optical low-pass filter effect.

EMBODIMENTS

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