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公开(公告)号：US20200183314A1
公开(公告)日：2020-06-11
申请号：US16789144
申请日：2020-02-12
Applicant: RICOH COMPANY, LTD.
Inventor： Toshihiro Ishii , Yoshihiro Oba , Fumikazu Hoshi , Satoru Sugawara
IPC: G03G15/00
Abstract: An optical sensor includes a light source; and an optical detector detecting intensity of light that is reflected by a recording medium, the light from the light source and irradiated onto the recording medium. Further, when an incident angle of the light incident to the recording medium from the light source relative to a normal line of the recording medium is given as θ1, a formula 75°≤θ1≤85° is satisfied.
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Patent Agency Ranking
公开(公告)号：US10041927B2
公开(公告)日：2018-08-07
申请号：US15266854
申请日：2016-09-15
Applicant: Ricoh Company, Ltd.
Inventor： Kazuma Goto , Fumikazu Hoshi , Yoshihiro Oba
Abstract: An optical sensor including an abutment part configured to abut one edge of an object to be measured, a wall extending along a side of the object to be measured and having a first opening to pass light emitted to the object to be measured, and a first concave portion formed between the first opening and the abutment part on a side of the wall to position the object to be measured. A paper-type discrimination device including the optical sensor, and a controller configured to discriminate a paper type of the object using the reflection light from the object measured by the optical sensor. An image forming apparatus including the optical sensor or the paper-type discrimination device.
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公开(公告)号：US10606204B2
公开(公告)日：2020-03-31
申请号：US15600191
申请日：2017-05-19
Applicant: RICOH COMPANY, LTD.
Inventor： Toshihiro Ishii , Yoshihiro Oba , Fumikazu Hoshi , Satoru Sugawara
Abstract: An optical sensor includes a light source; and an optical detector detecting intensity of light that is reflected by a recording medium, the light from the light source and irradiated onto the recording medium. Further, when an incident angle of the light incident to the recording medium from the light source relative to a normal line of the recording medium is given as θ1, a formula 75°≤θ1≤85° is satisfied.
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公开(公告)号：US09157853B2
公开(公告)日：2015-10-13
申请号：US14278844
申请日：2014-05-15
Applicant: Ricoh Company, Ltd.
Inventor： Toshihiro Ishii , Yoshihiro Oba , Fumikazu Hoshi , Satoru Sugawara
CPC classification number: G01N21/4738 , G01N21/21
Abstract: A moisture sensor for detecting moisture content of an object includes a light source to emit light having an infrared wavelength that is absorbed by water; an optical system to receive the light from the light source and output linearly polarized light having a first polarization direction in a direction toward the object, and to receive light scattered from the object and output linearly polarized light having a second polarization direction perpendicular to the first polarization direction in another direction other than the direction toward the object; and a photodetector to receive the linearly polarized light having the second polarization direction output from the optical system.
Abstract translation: 用于检测物体的水分含量的湿度传感器包括发射具有被水吸收的红外波长的光的光源; 光学系统，用于接收来自光源的光，并且在朝向物体的方向上输出具有第一偏振方向的线偏振光，并且接收从物体散射的光，并输出具有与第一偏振方向垂直的第二偏振方向的线偏振光 朝向物体的方向以外的另一方向的偏振方向; 以及光电检测器，用于接收从光学系统输出的具有第二偏振方向的线偏振光。
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公开(公告)号：US11215945B2
公开(公告)日：2022-01-04
申请号：US16789144
申请日：2020-02-12
Applicant: RICOH COMPANY, LTD.
Inventor： Toshihiro Ishii , Yoshihiro Oba , Fumikazu Hoshi , Satoru Sugawara
Abstract: An optical sensor includes a light source; and an optical detector detecting intensity of light that is reflected by a recording medium, the light from the light source and irradiated onto the recording medium. Further, when an incident angle of the light incident to the recording medium from the light source relative to a normal line of the recording medium is given as θ1, a formula 75°≤θ1≤85° is satisfied.
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公开(公告)号：US09429513B2
公开(公告)日：2016-08-30
申请号：US14454052
申请日：2014-08-07
Applicant: RICOH COMPANY, LTD.
Inventor： Kazuhiko Adachi , Yoshihiro Oba , Toshihiro Ishii , Fumikazu Hoshi , Sunao Chubachi , Yoshihiro Misaka
CPC classification number: G01N21/21 , G01B11/06 , G01G9/00 , G01N21/4738 , G01N21/59 , G01N2201/06113 , G01N2201/062 , G01N2201/0691 , G01N2201/105 , G03G15/5029 , G03G2215/00616 , G03G2215/00738 , G03G2215/00742
Abstract: A sensor apparatus includes an irradiation system with a light source configured to emit linearly polarized light of a first polarization direction onto a sheet-like object, in a direction oblique to a direction orthogonal to a surface of the object, a first photodetector arranged on an optical path of light that is emitted from the irradiation system and then is reflected at the object by regular reflection, a first optical element, arranged on an optical path of light reflected by diffuse reflection from an incidence plane of the object, configured to transmit linearly polarized light of a second polarization direction that is orthogonal to the first polarization direction, a second photodetector configured to receive light that has passed through the first optical element, and a detection unit configured to detect at least one of basis weight and thickness of the object.
Abstract translation: 一种传感器装置，包括具有光源的照射系统，被配置为沿与物体的表面正交的方向倾斜的方向将第一偏振方向的线偏振光发射到片状物体上;第一光电检测器， 从照射系统发射的光的光路，然后通过规则反射在物体处反射;第一光学元件，布置在从物体的入射平面漫反射反射的光的光路上，被配置为线性地透射 与第一偏振方向正交的第二偏振方向的偏振光，被配置为接收通过第一光学元件的光的第二光电检测器，以及检测单元，被配置为检测物体的基重和厚度中的至少一个 。
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