West Lafayette, IN, United States
West Lafayette, IN, United States
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Patent
Hans Tech | Date: 2014-07-28

A photographic objective lens (100), comprising a first lens (110), a second lens (120), a third lens (130), a fourth lens (140), a fifth lens (150), a sixth lens (160) and a seventh lens (170) sequentially arranged along a transmission direction of incident light. The first lens (110) is a meniscus negative lens and comprises a first curved surface (111) and a second curved surface (112); the second lens (120) is a positive lens and comprises a third curved surface (121) and a fourth curved surface (122); the third lens (130) is a meniscus negative lens and comprises a fifth curved surface (131) and a sixth curved surface (132); the fourth lens (140) is a positive lens and comprises a seventh curved surface (141) and an eighth curved surface (142); the fifth lens (150) is a double-concave negative lens and comprises a ninth curved surface (151) and a tenth curved surface (152); the sixth lens (160) is a meniscus positive lens and comprises an eleventh curved surface (161) and a twelfth curved surface (162); and the seventh lens (170) is a double-concave positive lens and comprises a thirteenth curved surface (171) and a fourteenth curved surface (172). The photographic objective lens (100) mentioned above can be directly used for underwater photography, has no need of a sealing box and is simple in terms of view finding and large in view finder coverage, and an underwater field-of-view angle thereof reaches 62 degrees.


An objective lens employing said far infrared imaging lens set (10), and a fire source detector employing said objective lens, the infrared imaging lens set (10) comprising a first lens (100), a second lens (200), and a third lens (300) successively arranged along a principal axis: the first lens (100) has a first curved surface (102) and a second curved surface (104), the radius of curvature of said first curved surface (102) being 57(15%) mm, and the radius of curvature of said second curved surface (104) being 85(15%) mm; the second lens (200) has a third curved surface (202) and a fourth curved surface (204), the radius of curvature of said third curved surface (202) being 210(15%) mm, and the radius of curvature of said fourth curved surface (204) being 37(15%) mm; and the third lens (300) has a fifth curved surface (302) and a sixth curved surface (304), the radius of curvature of said fifth curved surface (302) being 100(15%) mm, and the radius of curvature of said sixth curved surface (304) being 400(15%) mm; wherein the first curved surface (102), the second curved surface (104), the third curved surface (202), the fourth curved surface (204), the fifth curved surface (302), and the sixth curved surface (304) are successively arranged, and are all convex to the object side.


Patent
Hans Tech | Date: 2017-05-31

This invention concerns a tungsten-containing material, the application thereof and a preparation method thereof. Tungsten-containing materials can be used as electrochemical energy storage materials, fuel cell electrolytes and chemical catalyst materials. Tungsten-containing materials include tungsten oxide and tungsten oxide hydrate, doped tungsten oxides and doped tungsten oxide hydrates, tungsten oxide composites, and tungsten oxide hydrate composites.


Patent
Hans Tech | Date: 2015-07-24

This invention concerns a tungsten-containing material, the application thereof and a preparation method thereof. Tungsten-containing materials can be used as electrochemical energy storage materials, fuel cell electrolytes and chemical catalyst materials. Tungsten-containing materials include tungsten oxide and tungsten oxide hydrate, doped tungsten oxides and doped tungsten oxide hydrates, tungsten oxide composites, and tungsten oxide hydrate composites.


Patent
Hans Tech | Date: 2014-08-04

An optical lens, comprising a first to an eighth lens (L1, L2, L3, L4, L5, L6, L7, L8) coaxially arranged in sequence along the direction of transmission of an incident light ray. The first lens (L1) is a negative meniscus lens, and the curved surface of the first lens (L1) is convex to the object side; the second lens (L2) is a positive biconvex lens; the third lens (L3) is a negative biconcave lens; the fourth lens (L4) is a positive meniscus lens and the curved surface of the fourth lens (L4) is convex to the object side; the fifth lens (L5) is a negative meniscus lens and the curved surface of the fifth lens (L5) is convex to the object side; the sixth lens (L6) is a positive biconvex lens; the seventh lens (L7) is a negative meniscus lens and the curved surface of the seventh lens (L7) is convex to the image side; and the eighth lens (L8) is a negative meniscus lens and the curved surface of the eighth lens (L8) is convex to the image side; the fourth lens (L4) and the fifth lens (L5) are respectively positioned on the two sides of an optical diaphragm (200) of the optical lens; the second lens (L2), the third lens (L3), and the fourth lens (L4) form a first cemented lens set; and the fifth lens (L5), the sixth lens (L6), and the seventh lens (L7) form a second cemented lens set. The present optical lens has a relatively large field-of-view, and obtains high-definition zero distortion imaging results.


A laser processing method for a sapphire includes: acquiring an image of the sapphire during processing; performing an edge detection to the image to acquire a coordinate of a crack; determining an offset parameter according to the coordinate of the crack; adjusting a laser processing position according to the offset parameter; and further processing the sapphire in accordance with the adjusted laser processing position.


A homogeneous pump structure of laser, and a design method for the homogeneous pump structure of laser. The homogeneous pump structure of laser is used in a fiber laser or a fiber laser amplifier, and comprises a gain fiber (21). The gain fiber (21) comprises a pump light input end and a pump light output end. The pump area of the gain fiber (21) gradually decreases from the pump light input end to the pump light output end, so that a change rate between a pump light absorption capacity of each of segments, with equal lengths, of the gain fiber (21) and a pump light absorption capacity of a neighboring segment is smaller than b %, b being an empirical value.


Patent
Hans Tech | Date: 2016-10-10

A molten metal processing device including a molten metal containment structure for reception and transport of molten metal along a longitudinal length thereof. The device further includes a cooling unit for the containment structure including a cooling channel for passage of a liquid medium therein, and an ultrasonic probe disposed in relation to the cooling channel such that ultrasonic waves are coupled through the liquid medium in the cooling channel and through the molten metal containment structure into the molten metal.


Patent
Hans Tech | Date: 2016-02-09

A molten metal processing device including a molten metal containment structure for reception and transport of molten metal along a longitudinal length thereof. The device further includes a cooling unit for the containment structure including a cooling channel for passage of a liquid medium therein, and an ultrasonic probe disposed in relation to the cooling channel such that ultrasonic waves are coupled through the liquid medium in the cooling channel and through the molten metal containment structure into the molten metal.


Patent
Hans Tech | Date: 2016-08-31

The invention concerns a high-performance tungsten-based super battery system, which relates to an integrated design and a construction method of a corresponding material, a structure and a process. In the technology, a tungsten-based material is used a negative electrode, and a high-specific-surface-area carbon or lead oxide is used as a positive electrode to assemble four types of super batteries comprising: 1) a tungsten-carbon super battery, 2) a tungsten-tungsten super battery, 3) a tungsten- lead oxide super battery, and 4) a super battery system of a hybridized tungsten super battery (comprising lead oxide, lead, and a carbon material) on which the foregoing two types of super batteries are hybridized in use. The introduction of the tungsten-based material endows a novel class of super batteries with higher power density, higher energy density, longer cycling life, high durability and reliable safety. This will enable a broad range of applications.

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