| HAN'S LASER TECHNOLOGY CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110102904 | OPTICAL LENS - The present invention relates to the field of laser machining and provides an optical lens, comprising a lens group and a diaphragm. The diaphragm is located in front of the lens group. The lens group comprises three lenses, respectively the first, the second and the third lens, which are sequentially arranged as a “negative-positive-positive” separated focal power system. The first lens is a plano-concave negative lens, the second lens is a positive meniscus lens, and the third lens is a double convex positive lens. All of the curved surfaces of the second lens are bent in the direction towards the diaphragm, wherein, the focal length of the entire optical system is f, the focal lengths of the first, the second and the third lens are respectively f | 05-05-2011 |
| 20110096405 | OPTICAL LENS - The present invention relates to the field of laser machining and provides an optical lens, comprising a lens group and a diaphragm which is located in front of the lens group. The lens group comprises three lenses, respectively the first, the second and the third lens, which are sequentially arranged as a “negative-positive-positive” separated focal power system. The first lens is a double concave negative lens, the second lens is a positive meniscus lens, and the third lens is a double convex positive lens. Both of the curved surfaces of the second lens are bent in the direction towards the diaphragm, and the focal length of the entire optical system is f, the focal lengths of the first, the second and the third lens are respectively f | 04-28-2011 |
| 20110043931 | OPTICAL LENS - The present invention relates to the field of laser machining and provides an optical lens, comprising a lens group and a diaphragm which is located in front of the lens group. The lens group comprises three lenses, respectively the first, the second and the third lens, which are sequentially arranged as a “negative-positive-positive” separated focal power system, wherein the first lens is a negative meniscus lens, the second lens is a positive meniscus lens, the third lens is a plano-convex or positive meniscus lens. All the curved surfaces of the first lens and the second lens are bent in the direction towards the diaphragm, and the focal length of the entire optical system is f, the focal lengths of the first, the second and the third lens are respectively f | 02-24-2011 |
| 20110038062 | OPTICAL LENS - The present invention relates to the field of laser machining and provides an optical lens, comprising a lens group and a diaphragm. The diaphragm is located in front of the lens group. The lens group comprises three lenses, respectively the first, the second and the third lens, which are sequentially arranged as a “negative-positive-positive” separated focal power system, wherein the first lens is a negative meniscus lens, the second lens is a positive meniscus lens, the third lens is a positive meniscus lens, all the curved surfaces of the first lens, the second lens and the third lens are bent in the direction towards the diaphragm, and the focal length of the entire optical system is f, the focal lengths of the first, the second and the third lens are respectively f | 02-17-2011 |
| 20080218182 | Controlling Method for Capacitive Sensors - A controlling method for capacitive sensors in a vibrating mirror motor system includes a capacitive sensor, a subtraction circuit and an adder circuit connected to the capacitive sensor, a high frequency power supply providing power for the capacitive sensor, a D/A converter, and a gain stage adjustment device, wherein values obtained at the capacitive sensor are summed through the adder circuit, then the summed value and a value processed by the D/A converter are input to a comparator which comparing the values, and a gain adjusting value is obtained and supplied to the high frequency power supply, meanwhile the values obtained by capacitive sensor are subtracted by the subtraction circuit and then adjusted by the gain stage adjustment device, finally a position signal is outputted. | 09-11-2008 |
