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West Lafayette, IN, United States

Patent
Hans Tech | Date: 2010-10-28

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


Patent
Hans Tech and Han S Cnc Science And Technology Co. | Date: 2012-10-31

A zoom lens assembly for monitor and a monitoring device are provided. The lens assembly comprises a first to a thirteenth lenses (L


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


Patent
Shenzhen Hans Motor S&T Co. and Hans Tech | Date: 2013-12-26

A submersible linear motor (


Patent
Shenzhen Hans Motor S&T Co. and Hans Tech | Date: 2013-12-26

A submersible linear motor oil pumping system includes a submersible linear motor (

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