33results about How to "Accurate reflection" patented technology

A wafer having a device region, where a plurality of devices is formed, and an outer peripheral surplus region, which surrounds the device region, on the face of a circular wafer substrate is disclosed. A chamfered portion whose cross-sectional shape defines an arc-shaped surface in a range from the face to the back of the wafer substrate is formed in an outer peripheral end portion of the outer peripheral surplus region of the wafer substrate. A flat surface orthogonal to the face and the back is formed in the chamfered portion as a mark showing the crystal orientation of the wafer substrate. An identification code for specifying the wafer substrate is printed on the flat surface.

A communications network for servo systems and the like comprises a controller (5; 6; 48), first and second slave nodes (20, 25; 19, 26; 52, 62) configured to respond to control signals from the controller and to send respective feedback control signals to the controller, and a control signal transmission line (18, 24; 17, 23; 54, 62) between the controller and the slave nodes; wherein communication between said controller and said slave nodes employs reflective signaling, and wherein the transmission line incorporates a router (9; 8; 60) configured to route control signals from said controller to one or other of said first and second slave nodes in dependence on a further signal from said controller.

The invention discloses a polarization tomography microscopic imaging device and method. The device comprises: a laser, a polarization generator, a half mirror, a microscopic objective lens, a first beam splitter, a second beam splitter, a third Beam splitter, quarter wave plate, first Stokes system, second Stokes system, third Stokes system, fourth Stokes system, data acquisition module, computer, drive Module and X-Y scanning platform for installing the sample to be tested. The invention can obtain all-round polarization information of the sample to be tested, can detect and microscopically image the polarization states of different layers of the object, and can obtain the stress magnitude and direction of different layers inside the object, material structure, molecular arrangement orientation, refraction Rate, internal stress distribution, surface conductivity distribution, surface roughness and other information, more truly and accurately reflect the information of the measured sample, and can be widely used in the field of polarization measurement.

The present application relates to the field of resonator technology, and discloses a method for making an electrode structure, including: depositing a dielectric layer on a predetermined electrode layer; the dielectric layer is used to protect the electrode layer; forming a sacrificial layer on the side away from the electrode layer, the sacrificial layer exposing the dielectric layer; depositing a metal layer on the sacrificial layer and the exposed dielectric layer; etching the the metal layer and corrodes the sacrificial layer, so that an air gap structure is formed between the metal layer and the dielectric layer. In this way, when the fabricated electrode structure is applied to the bulk acoustic wave resonator, it can accurately reflect the transverse acoustic wave with the same frequency as the resonator while ensuring the Q value of the resonator. The application also discloses an electrode structure and a bulk acoustic wave resonator.

The invention discloses a device for detecting the moisture content of lubricating oil and a detection method thereof. The device comprises a platform, an infrared emission assembly, a light receiving assembly, a signal processing assembly, a signal acquisition and transmission assembly and an external oil conveying pipe, wherein the middle section of the external oil conveying pipe is fixed in the platform, and two ends of the external oil conveying pipe are connected with a lubricating oil pipeline; the light receiving assembly is connected in series with the signal processing assembly and the signal acquisition and transmission assembly in sequence; a super-hydrophilic and super-oleophobic coating layer is coated in a detection region at the bottom of the external oil conveying pipe, so that a super-hydrophilic and super-oleophobic filter film is formed in the detection region. By adopting the super-hydrophilic and super-oleophobic coating layer, when flowing through the detection region of the external lubricating oil pipeline, oil liquid continues to flow through the pipeline under the action of the super-hydrophilic and super-oleophobic filter film, and water droplets permeate the filter film and are gathered in the detection region; therefore, the shortcoming that a detection signal generated by the fact that a single water droplet passes through the detection region is not obvious is overcome; the sensitivity of the detection device is improved, so that a detection result is accurate.

The invention discloses a communication optimization method and device for an IRS auxiliary communication system. The communication optimization method comprises the steps of determining an initial position of UE taking the initial position of the UE as a sphere center, and taking a reference position in the space sphere; determining a preliminary channel and a reference channel between the UE andthe IRS according to the preliminary position of the UE and the distance between the reference position and the IRS position; determining a channel between the AP and the IRS according to the distance information between the position of the AP and the position of the IRS; determining a preliminary matrix and a reference matrix of the IRS according to the preliminary channel and the reference channel between the UE and the IRS and the channel between the AP and the IRS; realizing communication between the AP and the UE based on the preliminary matrix and the reference matrix of the IRS, determining channels corresponding to different reflection coefficient matrixes of the IRS, and selecting the matrix with the maximum channel strength as an optimal matrix; and realizing effective communication between the AP and the UE based on the optimal reflection coefficient matrix. According to the invention, the optimization of the IRS auxiliary communication system is realized.

The invention relates to the field of medical technology, and discloses a ostomy nursing support, which includes a top plate, a tripod and an observation mirror. Through the setting of the tripod, the tripod can allow users to adjust the rotation angle according to their own body shape, ensuring various There is enough space for patient care, and then the patient’s abdomen is clamped by two clamping rings on the tripod to ensure the stability of abdominal muscles and fat when the patient performs self-care, which is convenient for nursing and increases the efficiency of nursing. Completeness, and the height and spacing of the clamping ring can also be adjusted, which is further suitable for patients of different sizes. Through the setting of the reflector, the height of the reflector can be adjusted by switching the engagement of the engaging block and different limit slots , under the use of patients of different sizes, the height of the reflector can be quickly positioned and adjusted. The reflector has a rotating function through the swivel C and the cylindrical protrusion C, which helps the reflector to accurately reflect the abdomen.

A reflector according to the present invention can certainly reflect light emitted from a lamp in a desired direction without producing distortion in a reflection surface by specifying the distance between a projection portion and a back side end portion of the reflection surface of a reflector to be in the optimal range. The reflector, having a front side opening portion, a back side opening portion and a reflection surface, the reflector comprises a projection portion provided in an inner surface of the reflector, wherein, the projection portion is formed in an area at a 2.5 mm or more distance from a back side end portion of the reflection surface toward a back side.