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:
Jun. 04, 2013
Filed:
Feb. 11, 2010
Shun-sheng KE, Kaohsiung, TW;
Meng-che Tsai, Kaohsiung, TW;
Yang-cheng Lin, Chiayi, TW;
Pin-hao HU, Kaohsiung, TW;
Yu-hsiu Chang, Changhua County, TW;
Shun-Sheng Ke, Kaohsiung, TW;
Meng-Che Tsai, Kaohsiung, TW;
Yang-Cheng Lin, Chiayi, TW;
Pin-Hao Hu, Kaohsiung, TW;
Yu-Hsiu Chang, Changhua County, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A focal position detecting apparatus, for detecting a focusing condition and a tilting condition of an object, includes a planar beam generating module, an optical system, an optical sensor and a cylindrical lens. The planar beam generating module generates a planar light beam along a first path. The optical system is disposed on the first path, wherein the planar light beam, reflected by the object, passes through the optical system along a second path. The optical sensor is disposed on the second path. The cylindrical lens is disposed on the second path between the optical system and the optical sensor and an axis of the cylindrical lens is perpendicular to the second path. The planar light beam passes through the optical system and the cylindrical lens along the second path, before it is incident on the optical sensor to form a linear light spot for determining defocusing degree.