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. 13, 2018
Filed:
Oct. 02, 2015
Lam Khanh Nguyen, Oceanside, CA (US);
Lam Khanh Nguyen, Oceanside, CA (US);
Other;
Abstract
An OPO with very fast and accurate tuning. The angle of the crystals in the OPO is controlled by converting the linear motion of a voice coil into rotational motion. In preferred embodiments one or two OPO crystals are mounted as a crystal unit that can rotate around an axis such that the angle of the crystals with respect to the beams' direction can be varied to generate the desired wavelengths. The crystal unit has a lever that is connected to the shaft of the voice coil such that as the shaft extend or retracts the level is pulled or pushed and the linear motion of the shaft is converted to an angular motion of the crystal unit. The position of the voice-coil shaft is controlled in a close-loop based on a built-in encoder. The relation between the reading of the encoder and the crystals' angle is recorded and provides the calibration of the unit. Preferably calibration is done by measuring the output wavelength of the OPO as a function of the encoder position.