| 摘要 |
<P>PROBLEM TO BE SOLVED: To stabilize an image obtained by imaging by an image pick-up device through an imaging lens with enlarged depth of field at a higher quality in a position setting device for imaging. <P>SOLUTION: When fixing an imaging position for imaging an optical image formed through the imaging lens 10 by the image pick-up device 20 with enlarged depth of field having the lens Nyquist frequency of the imaging lens 10 being one time or more and four times or less of the sensor Nyquist frequency of the image pick-up device 20: the defocus MTF peak position regarding a subject of infinite distance in the imaging lens 10 is measured by peak position measuring means 210; whether the imaging lens 10 satisfies all of a plurality of conditional expressions regarding the defocus MTF peak position of this imaging lens 10 is determined by determination means 280; and the imaging position is fixed so that the conditional expressions regarding the imaging position are satisfied regarding the imaging lens 10 which is determined to satisfy all of the plurality of conditional expressions above by position setting means 290. <P>COPYRIGHT: (C)2012,JPO&INPIT |
