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.


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.


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: 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.


An F lens and a laser processing device for far-infrared laser processing are provided. The F lens for far-infrared laser processing comprises a first lens (L1), a second lens (L2) and a third lens (L3) which are coaxially arranged successively along a transmission direction of incident light beams, wherein the first lens is a negative meniscus lens, and the second lens and the third lens are positive meniscus lenses; and all the middle parts of the first lens, the second lens and the third lens protrude towards the transmission direction of incident light beams. The F lens can improve the imaging quality and the resolution distance, effectively calibrate the astigmatism and distortion of the lens, reduce the influence of high-order aberrations, and has a high degree of energy concentration of laser focus points and high processing accuracy, thereby meeting the requirements for cutting or drilling. The F lens is miniaturized, so that the volume of the lens is effectively controlled, and costs are reduced.


An F lens for extreme ultraviolet laser marking assembly and a laser processing device are provided. The lens assembly includes a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4) successively coaxially arranged along a transmission direction of an incident laser. The first lens (L1) is a biconcave negative lens; the second lens (L2) is a falcate negative lens; the third lens (L3) is a falcate positive lens; and the fourth lens (L4) is a biconvex positive lens; and an intermediate part of the second lens (L2) and the third lens (L3) are both convex toward a transmission direction of the laser. A proportion of the refractive index of the first, the second, the third and the fourth lenses to the abbe number is 1.476/68, with a tolerance of 5%. By means of the design of the four lenses and relative positions therebetween, astigmatism and distortion are effectively corrected, and the focusing degree of the energy is high. Imaging and marking of high quality are achieved; imaging quality is improved, and the structure of the lens assembly is simple, which is convenient for designing and appropriate for various laser processing devices.


A near-infrared laser focusing lens and a laser printing device are provided. The lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens (L1, L2, L3, L4, L5) which are coaxially arranged along a transmission direction of incident light rays, wherein the first lens (L1) is a negative plane-concave lens; the second lens and the third lens (L2, L3) are positive biconvex lenses; and the fourth lens and the fifth lens (L4, L5) are positive meniscus lenses; and a concave surface (S2) of the first lens (L1) is opposite to the second lens (L2), and the middle parts of the fourth lens and the fifth lens (L4, L5) both reversely protrude towards the transmission direction of light beams. After the shapes and the relative locations of the lenses are designed, the near infrared light can be clearly imaged, and the geometrical aberration of the lens can be effectively corrected, so as to obtain a clear flat field. In addition, because of having a large relative aperture and visual field and a long working distance, the lens is a microscope objective simultaneously having a large visual field, a large relative aperture, a long working distance and a flat field, and is capable of improving printing precision and clarity, so that the color rendition is truer and the operation is more convenient.


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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