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. 02, 2021
Filed:
Sep. 23, 2019
Shenzhen Our New Medical Technologies Development Co., Ltd., Guangdong, CN;
Our United Corporation, Shaanxi, CN;
Bin Yang, Guangdong, CN;
Mengmeng Zhang, Guangdong, CN;
Abstract
A multi-leaf collimator includes two leaf sets disposed opposite to each other, a plurality of drive devices, a U-shaped optoelectronic switching system, and a first processor. Each leaf set includes a plurality of leaves; each leaf is configured to move under driving of the corresponding drive device; one or more U-shaped optoelectronic switches in the U-shaped optoelectronic switching system are disposed at a side of the upper end surface and/or a side of the lower end surface of a leaf; the U-shaped optoelectronic switch includes a U-shaped groove, a transmitter and a receiver; the U-shaped optoelectronic switch system generates pulse signals when the leaf is configured to move in the U-shaped groove; the first processor is configured to process pulse signals output by the U-shaped optoelectronic switch system to obtain a quantized value of the state of motion of a leaf.