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. 23, 2010
Filed:
Jul. 25, 2006
Chii-how Chang, Taoyuan Hsien, TW;
Chii-How Chang, Taoyuan Hsien, TW;
Delta Electronics, Inc., Taoyuan Hsien, TW;
Abstract
An iris diaphragm actuator includes a magnetic position sensing structure, at least one driving element and a light intercepting element. The magnetic position sensing structure includes a magnetic element and a magnetic sensor relatively disposed. The driving element connects and drives the magnetic element or the magnetic sensor to perform a rotating motion with respect to a rotation center such that the distance and angle between the magnetic element and the magnetic sensor are changed so as to obtain a substantially linear relation between a magnetic flux sensed by the magnetic sensor and the position of the magnetic element. Also, an arrangement method of a magnetic position sensing structure is disclosed.