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:
Mar. 12, 2019
Filed:
Aug. 06, 2015
Shimadzu Corporation, Kyoto-shi, Kyoto, JP;
Masaru Nishiguchi, Kyoto, JP;
Daisuke Okumura, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto-shi, Kyoto, JP;
Abstract
A mass spectrometer includes a collision cell () converging electrode (), accelerating electrode () and front-side ion lens system () which is an electrostatic lens, which are all located within a medium-vacuum region, and a partition wall () for separating the medium-vacuum region from a high-vacuum region and an ion transport optical system () located within the high-vacuum region. Ions which have been extracted and accelerated by an accelerating electric field created between an exit electrode () and the accelerating electrode () are focused into a micro-sized ion-passage opening () by the converging electrode (). The accelerating electrode () blocks a stream of gas, thereby decreasing the chance of contact of ions with gas particles behind the electrode. Additionally, the accelerating electric field imparts a considerable amount of kinetic energy to the ions, thereby preventing the ions from being dispersed even when they come in contact with the gas particles.