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    • 2. 发明授权
    • Non-visible particle detection based on smart phone
    • 基于智能手机的不可见粒子检测
    • US08735842B2
    • 2014-05-27
    • US13355525
    • 2012-01-21
    • Din Ping TsaiChih-Chieh WuTai-Shan LiaoChi-Hung Huang
    • Din Ping TsaiChih-Chieh WuTai-Shan LiaoChi-Hung Huang
    • G01T1/20
    • G01T1/023G01T7/00
    • A non-visible particle detection device includes an optical module capable of converting an ionizing radiation into visible light. The optical module includes has an attachment unit that is configured to removably attach the optical module to the image capturing module of a mobile device. The image capturing module generates a photon digital image based on the photons converted from the ionizing radiation. The mobile device can be implemented with a radiation dose determining module to execute a radiation dose equivalent calculation method. Based on the pixel brightness analysis of the photon digital image, the radiation equivalent dose can be determined. This method sums up the total brightness of all pixels in the images, determines whether the total brightness is smaller than the minimum effective brightness, and determines the radiation equivalent dose when the total brightness is equal to or larger than the minimum effective brightness.
    • 不可见的粒子检测装置包括能够将电离辐射转换成可见光的光学模块。 光学模块包括具有附接单元,其被配置为将光学模块可移除地附接到移动设备的图像捕获模块。 图像捕获模块基于从电离辐射转换的光子产生光子数字图像。 移动设备可以用辐射剂量确定模块实现,以执行辐射剂量等效的计算方法。 基于光子数字图像的像素亮度分析,可以确定辐射等效剂量。 该方法将图像中所有像素的总亮度相加,确定总亮度是否小于最小有效亮度,并且当总亮度等于或大于最小有效亮度时确定辐射等效剂量。
    • 9. 发明授权
    • Fiber unbalanced Mach-Zehnder interferometers with flat-top spectral response for application in wavelength division multiplexers
    • 光纤不平衡马赫 - 曾德干涉仪,具有平顶光谱响应,适用于波分复用器
    • US06263128B1
    • 2001-07-17
    • US09324238
    • 1999-06-02
    • Chi-Hung Huang
    • Chi-Hung Huang
    • G02B628
    • G02B6/29352G02B6/29319G02B6/29358G02B6/2938
    • According to the present invention, a multi-window wavelength division multiplexer (MWDM) is coupled to a correcting filter characterized by a shallow modulation depth and a channel separation smaller than the MWDM. A correcting filter is coupled to an input of the MWDM or to each of the two outputs of the MWDM. By changing the modulation depth and/or channel separation of the correcting filter(s), the spectral response of the filter can be adjusted to produce a more uniform gain (i.e., a “flat-top” spectral response) across wavelengths of passbands within the MWDM. In one embodiment, the correcting filter is an unbalanced Mach-Zehnder interferometer formed with two fused-fiber couplers having non-equal splitting ratios. In other embodiments, the correcting filter is a Fabry-Perot interferometer having a low end-face reflectivity.
    • 根据本发明,多窗口波分多路复用器(MWDM)耦合到校正滤波器,其特征在于浅调制深度和小于MWDM的信道分离。 校正滤波器耦合到MWDM的输入或MWDM的两个输出中的每一个。 通过改变校正滤波器的调制深度和/或信道间隔,可以调整滤波器的频谱响应,以在多个通带波长内产生更均匀的增益(即,“平顶”频谱响应) MWDM。 在一个实施例中,校正滤波器是由具有不相等分离比的两个熔接光纤耦合器形成的不平衡马赫 - 曾德干涉仪。 在其他实施例中,校正滤波器是具有低端面反射率的法布里 - 珀罗干涉仪。