公开(公告)号：US20250020578A1

公开(公告)日：2025-01-16

申请号：US18762610

申请日：2024-07-02

Applicant: Konica Minolta, Inc.

Inventor： Akira KOSAKA ,  Satoshi MASUDA ,  Junichi YAMAZOE ,  Katsutoshi TSURUTANI

IPC: G01N21/25

Abstract: The photometric apparatus includes a light receiver having one or a plurality of light receiving sensors that receive light to be measured from an object to be measured; a controller that calculates a measured value based on an output from the one or plurality of light receiving sensors; a light attenuation member that is disposed so as to be insertable in and removable from a light path of the light to be measured and attenuates the light to be incident on the light receiver; and a corrector that corrects a difference between a measured value calculated by the controller in a state in which the light attenuation member is inserted in the light path and a measured value calculated by the controller in a state in which the light attenuation member is not inserted in the light path, the measured values varying depending on a characteristic of the object.