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:
Jul. 08, 2008
Filed:
Jul. 10, 2006
Pie-yau Chien, Taichung, TW;
Hua-tang Liu, Taichung, TW;
Yi-qi LI, Taichung, TW;
Yong-ce Qi, Taichung, TW;
Zhang-yong Jian, Taichung, TW;
Yue-ye Chen, Taichung, TW;
Pie-Yau Chien, Taichung, TW;
Hua-Tang Liu, Taichung, TW;
Yi-qi Li, Taichung, TW;
Yong-ce Qi, Taichung, TW;
Zhang-yong Jian, Taichung, TW;
Yue-ye Chen, Taichung, TW;
Asia Optical Co., Inc., Hsin-Chu, TW;
Abstract
A laser level with temperature control device () and the temperature control method thereof are disclosed. The temperature control device includes a thermal insulation chamber (), a thermoelectric cooler (), a control unit (), and first and second temperature sensors (). The second temperature sensor is received in the thermal insulation chamber together with a tilt sensor (). The control unit controls operation of the thermoelectric cooler according to the external and internal temperature signals respectively output by the first and second temperature sensors, so as to adjust the internal temperature inside the thermal insulation chamber to be a calibration temperature point close to the external temperature. Accordingly, the temperature drift problem can be addressed, and the working temperature of the tilt sensor can be maintained in a stable range. Further, the acceptable ambient temperature range within which the tilt sensor works can be expanded.