Patent application number | Description | Published |
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 |
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 |
20150185485 | INFRARED LASER ZOOM BEAM EXPANDING SYSTEM AND LASER PROCESSING EQUIPMENT - An infrared laser zoom beam expanding system, applied to the field of laser processing, and comprising a first lens, a second lens and a third lens. The first lens and the third lens are plane-convex plus lenses, and the second lens is a meniscus minus lens. The first lens, the second lens and the third lens respectively comprise a first surface and a second surface, a third surface and a fourth surface as well as a fifth surface and a sixth surface. The radiuses of curvature of the first to sixth surfaces are ∞, −27, 10, 1.7, ∞, −103. The center thickness of the first to third lenses is 2, 1, 4. The outer diameters of the first to third lenses are 10, 3, 34. Proportions of the refractive indexes to the Abbe numbers of the first to third lenses are 1.8:25, 1.48:68, and 1.8:25. A distance between the second surface and the third surface is 10-27. An distance between the fourth surface and the fifth surface is 119-125, The unit is millimeter, and a tolerance is 5%. The system may perform beam expanding on entering light by 2-16 times, which may be adaptable to laser devices with different emergent diameters and divergence angles, and improve efficiency and accuracy of laser processing. | 07-02-2015 |
20150192778 | ULTRAVIOLET LASER ZOOM BEAM EXPANDING SYSTEM AND LASER PROCESSING EQUIPMENT - An ultraviolet laser zoom beam expanding system, applied to the field of laser processing, includes a first lens, a second lens, and a third lens (L | 07-09-2015 |
20150205136 | GREEN LASER ZOOM BEAM EXPANDING SYSTEM AND LASER PROCESSING EQUIPMENT - A green laser zoom beam expanding system, applied to the field of laser processing, and comprising a first lens, a second lens and a third lens (L | 07-23-2015 |
20150268454 | EXTREME ULTRAVIOLET LASER MARKING FO SHOT AND LASER PROCESSING DEVICE - An Fθ lens for extreme ultraviolet laser marking assembly and a laser processing device are provided. The lens assembly includes a first lens (L | 09-24-2015 |
20150293333 | F-THETA LENS AND LASER PROCESSING DEVICE FOR FAR-INFRARED LASER PROCESSING - An Fθ lens and a laser processing device for far-infrared laser processing are provided. The Fθ lens for far-infrared laser processing comprises a first lens (L | 10-15-2015 |
20150293334 | VARIOFOCUSING MONITORING SHOT AND MONITORING DEVICE - A zoom lens assembly for monitor and a monitoring device are provided. The lens assembly comprises a first to a thirteenth lenses (L | 10-15-2015 |