Abstract: An optical element including an optically transparent lens which defines a curved surface having a steepness given by an R/# of from about 0.5 to about 1.0. A film is positioned on the curved surface. The film includes an index layer. A composite layer is positioned on the curved surface having a refractive index greater than the index layer. The composite layer includes HfO2 and Al2O3. The composite layer has a mole fraction X of HfO2, wherein X is from about 0.05 to about 0.95 and a mole fraction of Al2O3 in the composite layer is 1?X.

Abstract: Atomic layer deposition methods for coating an optical substrate with magnesium fluoride. The methods include two primary processes. The first process includes the formation of a magnesium oxide layer over a surface of a substrate. The second process includes converting the magnesium oxide layer to a magnesium fluoride layer. These two primary processes may be repeated a plurality of times to create multiple magnesium fluoride layers that make up a magnesium fluoride film. The magnesium fluoride film may serve as an antireflective coating layer for an optical substrate, such as an optical lens.

Abstract: An electrostatic sensing system configured to sense an electrostatic information of a fluid inside a fluid distribution component and including an electrostatic sensing assembly, a signal amplifier and an analog-to-digital converter. The electrostatic sensing assembly includes a sensing component, and a shield. The sensing component is configured to be disposed at the fluid distribution component. The sensing component is disposed through the fluid distribution component so as to be partially located in the fluid distribution component. The shield surrounds a part of the sensing component that is located in the fluid distribution component. At least part of the shield is located on an upstream side of the sensing component. The signal amplifier is electrically connected to the sensing component. The analog-to-digital converter is electrically connected to the signal amplifier. The shield has an opening spaced apart from the sensing component.

Abstract: Embodiments of this disclosure disclose a method and apparatus for providing a voice service. An embodiment of the method comprises: analyzing, in response to receiving first voice request information sent by an intelligent voice device containing a display, the first voice request information to determine a user demand; determining an alternative operation associated with the user demand based on a configured optional operation set; generating prompt information for guiding a user to execute the alternative operation; and pushing the prompt information to the intelligent voice device containing the display to enable the intelligent voice device to show the prompt information on the display. The embodiment realizes a user demand based differential operation prompt, and improves the efficiency of the voice service.

Abstract: A method and an apparatus for processing a voice request are provided. The method includes: searching, in response to determining that a target multimedia resource requested to be played in a voice request is not included in a preset multimedia resource library, for the target multimedia resource in a resource library other than the multimedia resource library; and sending a link address of the found target multimedia resource ant an instruction for playing the target multimedia resource to a smart voice device. The coverage of the content of a voice service is expanded, thereby improving the efficiency of the voice service.

Abstract: Embodiments of this disclosure disclose a method and apparatus for providing a voice service. An embodiment of the method comprises: analyzing, in response to receiving first voice request information sent by an intelligent voice device containing a display, the first voice request information to determine a user demand; determining an alternative operation associated with the user demand based on a configured optional operation set; generating prompt information for guiding a user to execute the alternative operation; and pushing the prompt information to the intelligent voice device containing the display to enable the intelligent voice device to show the prompt information on the display. The embodiment realizes a user demand based differential operation prompt, and improves the efficiency of the voice service.

Abstract: An impulse suppression apparatus and method applied in an OFDM system for suppressing the impulse noise of a first time-domain signal are disclosed. The impulse suppression apparatus includes a noise blanker for generating a second time-domain signal through blanking the noise of the first time-domain signal, wherein each absolute value of the second time-domain signal is not greater than a predetermined value, a first Fourier transform unit for performing a Fourier transform on the second time-domain signal to generate a frequency-domain signal, an equalizing module for generating an equalized signal by equalizing each sub-carrier signal of the frequency-domain signal, a decision unit for generating a decision signal according to the equalized signal, and a compensation module for computing the difference between the equalized signal and the decision signal and for generating the output signal through calibrating the equalized signal according to the difference.

Abstract: An impulse suppression apparatus and method applied in an OFDM system for suppressing the impulse noise of a first time-domain signal are disclosed. The impulse suppression apparatus includes a noise blanker for generating a second time-domain signal through blanking the noise of the first time-domain signal, wherein each absolute value of the second time-domain signal is not greater than a predetermined value, a first Fourier transform unit for performing a Fourier transform on the second time-domain signal to generate a frequency-domain signal, an equalizing module for generating an equalized signal by equalizing each sub-carrier signal of the frequency-domain signal, a decision unit for generating a decision signal according to the equalized signal, and a compensation module for computing the difference between the equalized signal and the decision signal and for generating the output signal through calibrating the equalized signal according to the difference.