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:
Jan. 22, 2013
Filed:
Oct. 14, 2010
La-kwan Chau, Chiayi, TW;
Szu-shan Shieh, Taipei, TW;
Chin-jung Kuo, Tainan County, TW;
Chung-sheng Chiang, Tainan, TW;
Chang-yue Chiang, Taiping, TW;
Yu-shen Shih, Changhua County, TW;
La-Kwan Chau, Chiayi, TW;
Szu-Shan Shieh, Taipei, TW;
Chin-Jung Kuo, Tainan County, TW;
Chung-Sheng Chiang, Tainan, TW;
Chang-Yue Chiang, Taiping, TW;
Yu-Shen Shih, Changhua County, TW;
National Chung Cheng University, Min-Hsiung Chia-Yi, TW;
Abstract
The present invention relates to a photoelectrical feedback sensing system. A first light signal passes through the sensing apparatus. A second light signal corresponding to a characteristic of a sample within the sensing apparatus is outputted from the sensing apparatus. The first photo detector receives the first light signal and outputs a first electric signal corresponding to the intensity of the first light signal. The second photo detector outputs a second electric signal corresponding to the intensity of the second light signal. A driving signal is generated by the micro-processor to drive the light-emitting unit. The micro-processor receives the second electric signal and converts the second electric signal into a digital signal. The feedback circuit modulates the driving signal for maintaining the optical stability of the first light signal so that the sensing system is less affected by environmental temperature fluctuation and noise interferences.