公开(公告)号：US20180356285A1

公开(公告)日：2018-12-13

申请号：US15781965

申请日：2016-12-05

申请人： KONICA MINOLTA, INC.

发明人： Masayuki YAMADA

IPC分类号： G01J3/02 ,  G01J3/51

CPC分类号： G01J3/0251 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0235 ,  G01J3/0262 ,  G01J3/0264 ,  G01J3/0291 ,  G01J3/51

摘要： A colorimeter includes an integrating sphere, a light source, a light receiver and a low reflectance unit. The integrating sphere has a first aperture to be covered with a sample and a second aperture opposing the first aperture configured to allow reflected light from the sample to pass therethrough. The light source irradiates an inner wall of the integrating sphere with light. The light receiver receives, through the second aperture, the reflected light from a surface of the sample that enters the integrating sphere through the first aperture when the light from the light source is reflected by the inner wall, and is applied to the sample through the first aperture, and outputs a signal in accordance with the reflected light. The low reflectance unit is disposed around the light receiver to face an internal space of the integrating sphere, and has lower light reflectance than the inner wall.