METHOD AND SYSTEM FOR ANALYZING VELOCITY DISTRIBUTION OF WATER FLOW IN A WATER BODY

    公开(公告)号:US20190056421A1

    公开(公告)日:2019-02-21

    申请号:US15869927

    申请日:2018-01-12

    Inventor: Shi-Wei Lo

    Abstract: A system for analyzing velocity distribution of water flow includes a water outlet, a thermographic camera and a processing device. The water outlet is disposed above a water body for discharging sample water thereto, the sample water having a temperature higher than that of the water body. The thermographic camera is disposed above the water body for capturing first and second thermographic images of the water body at different time instances after the discharge of the sample water. The processing device calculates a flow velocity of the sample water in the water body based on the first and second thermographic images, and to analyze the velocity distribution of the water body according to the flow velocity of the sample water.

    Recovering a rare-earth-doped optical fiber under irradiation

    公开(公告)号:US10177523B2

    公开(公告)日:2019-01-08

    申请号:US14854020

    申请日:2015-09-14

    Abstract: An optical fiber apparatus and a method of recovering radiation-induced-attenuation (RIA) onto a rare-earth-doped optical fiber under irradiation are provided in this disclosure. A light source is coupled to a rare-earth doped optical fiber. The light source emits a combination of mode locked pulsed light and non-mode locked quasi-continuous-wave light. The mode locked pulsed light are used to recover RIA onto the rare-earth doped optical fiber in real time, and the non-mode locked light are used to pump the rare-earth doped optical fiber as a gain medium. Each pulsed duration of the mode locked pulsed light is much shorter than operation duration of the non-mode locked light, such that an instantaneous power of the mode locked pulsed light exceeds a saturated pumping power required for the rare-earth doped optical fiber, so as to effectively elevate the core temperature of rare-earth doped fiber to achieve a confined photo-annealed recovery of RIA onto rare-earth doped fibers.

    System for online monitoring powder-based 3D printing processes and method thereof

    公开(公告)号:US10086559B2

    公开(公告)日:2018-10-02

    申请号:US14803679

    申请日:2015-07-20

    Abstract: A system for online monitoring powder-based 3D printing processes and method thereof are disclosed. A uniform light source having a single wavelength provided by the system is irradiated onto the powder layer before and after applied with glue. Intensities of such reflected images are obtained and subtracted from each other in an image process procedure. A difference obtained through the subtraction is compared with an original 3D model in a computer. If any defect is found such as being larger than a threshold value, the powder-based 3D printing processes will be terminated. Therefore, the technical effects of online printing processes monitoring, time saving and printing resources saving will be achieved.

    DETECTING APPARATUS BASED ON IMAGE FOR BLOOD GLUCOSE CONCENTRATION AND METHOD THEREOF

    公开(公告)号:US20180085035A1

    公开(公告)日:2018-03-29

    申请号:US15633648

    申请日:2017-06-26

    Abstract: The present invention provides a detecting apparatus based on image for detecting blood glucose concentration and method thereof. The detecting apparatus comprising a lighting device, an image capture device, a thermal imager and an operating device. The lighting device including a first wavelength of light source and a second wavelength of light source, configured to illuminate skin. The image capture device disposed above the lighting device, configured to capture a first image and a second image corresponding to the first wavelength of light source and the second wavelength of light source illuminated on the skin respectively. The thermal imager is configured to detect temperature of the skin. The operating device is connected to the lighting device, the image capture device and the thermal imager, configured to calculate blood glucose concentration according to the first image, the second image and the temperature.

    Conjugate common optical path lithography lens

    公开(公告)号:US09891533B2

    公开(公告)日:2018-02-13

    申请号:US14740445

    申请日:2015-06-16

    CPC classification number: G03F7/7015 G02B13/18 G02B13/22 G02B17/08 G03F7/70225

    Abstract: A conjugate common light path lithography lens set includes a first, second, third, and fourth spherical mirrors, arranged sequentially, a spherical reflecting mirror arranged below the fourth spherical mirror, a first and second planar reflecting mirrors, inclinedly arranged above the first spherical mirror, so that a conjugate telecentric component pattern is formed to maintain an pattern of an object to have a non-deformed pattern after experiencing these optical components. As such, the omni-spherical mirror set and two kinds of optical material are mutually arranged to form the novel conjugate common light path lithography lens set. This may further achieve the function of the lithography lens, and have a direct effect on the manufacturing cost. And, the efficacies of reduced component number, easier manufacture of the optical components (satisfied with the lens manufacturing's experience equation), easier calibration, reduced chromatic abberation, optimized aperature F/#, and a reduced cost may be achieved.

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