6 results about "Optical measurements" patented technology

A dental CAD/CAM system forms a custom dental preparation guide for guiding a dental tool that alters a shapes a tooth structure to which a custom prosthetic dental item is to be attached. The system acquires an optical measurement and an x-ray of at least one dental structure. The system correlates the acquired optical measurement and the x-ray to form a model of the at least one dental structure. The system generates a model of a reduced tooth structure based on the model of the at least one dental structure. The system also provides at least one dental preparation guide based on the model of the reduced tooth structure.

The invention discloses a high-precision large-view optical measurement device and a detection system. The optical measurement device comprises a light source, a carrying table, a multi-port lens, a light splitting assembly and a camera group. The detection system includes an optical measurement device, a processor, a memory, and a display. Through the optical scheme design that the high-magnification multi-port lens is configured with the high-resolution and high-frame-rate camera, the purpose of high-precision large-view measurement is achieved in combination with multi-camera regional calibration. The technical scheme is easy to implement, is free of a moving part, ensures the stability of detection or measurement, is low in overall cost, achieves the purpose of high-precision large-view measurement and detection, and is convenient to popularize and apply.

The invention relates to an immunochromatographic assay system and a background identification method thereof. The immunochromatographic assay system comprises a master control unit, an optical measurement unit and a background acquisition unit; the master control unit comprises a master control CPU, and a driving circuit and a display module connected with the master control CPU; the optical measurement unit comprises an optical detection device, and a transmission device connected with the driving circuit; the background acquisition unit comprises a background signal input module connected with the optical detection device, a conditioning filtering module connected with the background signal input module, and a conditioning amplification module connected with the conditioning filtering module, wherein the conditioning amplification module is also connected with the master control CPU. According to the system and the method provided by the invention, detection range and precision of the immunochromatographic assay system are improved; meanwhile, influence caused by difference of physicochemical properties of a clinical sample under test is reduced greatly. The system and the method provided by the invention have high practicability, can be widely applied to the fields, such as medical bedside examination and food safety inspection, and effectively solve a defect of degradationof instrument performance of an immunochromatographic instrument caused by a background baseline problem.

The invention discloses a railway retarder large-scale on-line monitoring device based on fiber bragg gratings. An FBG sensor is fixed on each monitored retarder, and the FBG sensors are connected with an optical fiber branching device through optical fibers; the optical fiber branching device is connected with a fiber bragg grating demodulator, and the fiber bragg grating demodulator is connectedwith a fiber bragg grating sensor; the fiber bragg grating demodulator is connected with a server through a signal line or a wireless network, and the server stores stress change information of eachmonitored retarder. According to the invention, the all-optical measurement and transmission are adopted, no electronic equipment exists on site, other electronic equipment of a railway is not interfered, the interference of other electronic equipment is avoided, and the insulation protection is not needed. The optical center wavelength value of each single FBG sensor is specific; in the laser band range, the low-cost large-scale deployment can be achieved, the working state of the retarder is monitored in real time, the labor intensity of workers is relieved, and meanwhile, the shunting safety of a railway freight yard is improved.

The invention discloses a printer colored tape movement control method and device based on optical measurement and a medium. The method comprises the steps that the position information when light emitted by a light-emitting point light source can be received by a receiving point light source and the light is tangent to a tape winding wheel in the movement process of the light-emitting point lightsource is obtained; printer parameters are obtained, and the radius of the tape winding wheel is calculated according to the printer parameters and the position information; the resolution of a printing head is obtained, and the operation pulse number of the tape winding wheel is calculated according to the resolution of the printing head and the radius of the tape winding wheel so that the movement of a colored tape can be controlled according to the operation pulse number of the tape winding wheel; and the operation of the tape winding wheel can be accurately controlled, so that the printing quality of the printer is ensured, and meanwhile, the waste of the use of the colored tape is avoided.