公开(公告)号：US09544502B2

公开(公告)日：2017-01-10

申请号：US13761460

申请日：2013-02-07

Applicant: PENTAX RICOH IMAGING COMPANY, LTD.

Inventor： Naoto Asakura ,  Yoshitaka Kimura ,  Kosei Kosako

IPC: H04N5/238 ,  H04N5/235 ,  H04N5/361

CPC classification number: H04N5/2353 ,  H04N5/361

Abstract: A dark exposure control device comprises a dark exposure performing processor, an aperture-stop, and an aperture-stop driving processor. The dark exposure performing processor detects an image signal generated by an imaging device while the shutter is closed. The aperture-stop adjusts the amount of light incident on the imaging device. The aperture-stop driving processor adjusts the opening degree of the aperture-stop to smaller than the opening degree set for a main exposure while the dark exposure performing processor is operated.

Abstract translation: 暗曝光控制装置包括暗曝光执行处理器，光圈停止和光圈停止驱动处理器。 暗曝光执行处理器在快门关闭时检测由成像装置产生的图像信号。 孔径光阑调节入射到成像装置上的光量。 当操作暗曝光执行处理器时，光圈停止驱动处理器调整孔径光阑的开度小于为主曝光设定的开度。