The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 2024
Filed:
Aug. 22, 2019
Hitachi High-tech Corporation, Tokyo, JP;
HITACHI HIGH-TECH CORPORATION, Tokyo, JP;
Abstract
A liquid level detection device capable of accurately detecting an interface inside a container has an irradiation unit which irradiates a side surface of a sample container containing a sample having layers with light. A light receiving unit receives transmitted light from the sample container and an analysis unit acquires the interfaces between the layers from the received amount of the transmitted light. The sample container is moved vertically relative to the irradiation unit and the light receiving unit by a first drive and is moved in the circumferential direction relative to the irradiation unit and the light receiving unit by a second drive. The second drive is controlled so that the light receiving unit receives the transmitted light at first and second irradiation angles, and the interfaces between the layers are acquired on the basis of the received amounts of transmitted light at the first and second irradiation angles.