公开(公告)号：US20160142617A1

公开(公告)日：2016-05-19

申请号：US14897097

申请日：2014-03-07

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Hideshi OISHI ,  Masaharu TOKIWA

IPC: H04N5/232 ,  H04N5/238 ,  H04N5/378 ,  H04N5/341 ,  H04N5/369

CPC classification number: H04N5/23212 ,  G02B7/36 ,  G02B21/245 ,  G02B21/365 ,  G03B13/36 ,  H04N5/238 ,  H04N5/341 ,  H04N5/3696 ,  H04N5/378

Abstract: In an image acquisition device, an optical path length difference in a second light figure can be formed by arrangement of an optical path difference generating member, without need for splitting light in a second optical path for focus control. Therefore, it reduces the quantity of light into the second optical path necessary for acquisition of information of focal position while ensuring the quantity of light enough for execution of imaging by a first imaging device. Furthermore, in this image acquisition device, a light reduction portion is provided between a first face and a second face of the optical path difference generating member. This light reduction portion can narrow a light superimposed region on the imaging surface of the second imaging device, which allows control of the focal position to a sample to be accurately carried out.

Abstract translation: 在图像获取装置中，可以通过配置光程差产生部件来形成第二光图中的光路长度差，而不需要在用于聚焦控制的第二光路中分离光。 因此，在确保足够量的第一摄像装置进行摄像的光量的同时，能够减少获取焦点位置信息所需的第二光路的光量。 此外，在该图像获取装置中，在光程差产生部件的第一面和第二面之间设置有光衰减部。 该光衰减部分可以缩小第二成像装置的成像表面上的光叠加区域，这允许准确地执行对样本的焦点位置的控制。