Optical Part of a Pyrometer Used in a Tungsten–Rhenium Thermocouple Calibration Setup

2021 ◽  
Author(s):  
V. K. Bityukov ◽  
R. A. Gorbunov ◽  
D. S. Simachkov ◽  
A. A. Ulanovskiy ◽  
A. V. Frunze
Keyword(s):  
Thermocouple Calibration ◽  
Optical Part ◽  
Calibration Setup

Analysis of the measuring uncertainty of a calibration setup for a 6-DOF force/torque sensor

2017 ◽  
Author(s):  
Johannes Bilz ◽  
Gianni Allevato ◽  
Janis Butz ◽  
Niklas Schafer ◽  
Christian Hatzfeld ◽  
...  
Keyword(s):  
Torque Sensor ◽  
Calibration Setup

scholarly journals An approach for security evaluation and certification of a complete quantum communication system

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shihan Sajeed ◽  
Poompong Chaiwongkhot ◽  
Anqi Huang ◽  
Hao Qin ◽  
Vladimir Egorov ◽  
...  
Keyword(s):  
Communication Systems ◽  
Distribution Systems ◽  
Quantum Communication ◽  
Global Scale ◽  
Security Evaluation ◽  
Wave System ◽  
System Implementation ◽  
Optical Part ◽  
Quantum Optical ◽  
Complete Quantum

AbstractAlthough quantum communication systems are being deployed on a global scale, their realistic security certification is not yet available. Here we present a security evaluation and improvement protocol for complete quantum communication systems. The protocol subdivides a system by defining seven system implementation sub-layers based on a hierarchical order of information flow; then it categorises the known system implementation imperfections by hardness of protection and practical risk. Next, an initial analysis report lists all potential loopholes in its quantum-optical part. It is followed by interactions with the system manufacturer, testing and patching most loopholes, and re-assessing their status. Our protocol has been applied on multiple commercial quantum key distribution systems to improve their security. A detailed description of our methodology is presented with the example of a subcarrier-wave system. Our protocol is a step towards future security evaluation and security certification standards.

Holographic calibration setup based on a set of reference kits comprising axial computer-generated holograms and base test plates

2021 ◽  
Vol 88 (7) ◽  
pp. 368
Author(s):  
A. V. Lukin ◽  
V. I. Kurt ◽  
A. N. Mel’nikov ◽  
A. I. Sadrutdinov ◽  
A. A. Yankovskii
Keyword(s):  
Computer Generated Holograms ◽  
Calibration Setup

scholarly journals Simulation of the Photodetection in the PPS CMOS Sensors

2013 ◽  
Vol 8-9 ◽  
pp. 611-618
Author(s):  
Florin Toadere ◽  
Radu Arsinte
Keyword(s):  
Image Processing ◽  
Input Data ◽  
Signal To Noise Ratio ◽  
Image Processing Algorithm ◽  
Signal To Noise ◽  
Spectral Image ◽  
Image Capture ◽  
Visible Image ◽  
Optical Part ◽  
Electrical Part

The paper contains an analysis and simulation of passive pixel based sensors. The passive pixel CMOS image acquisition sensor (PPS) is the key part of a visible image capture systems. The PPS is a complex circuit composed by an optical part and an electrical part, both analog and digital. The goal of this paper is to simulate the functionality of the photodetection process that happens in the PPS sensor. The photodetector is responsible with the conversion from photons to electrical charges and then into current. In the optical part, the sensor is analyzed by a spectral image processing algorithm which uses as input data: the lenses array transmittance, the red, green and blue filters and the quantum efficiency of the PPS. In the electrical part of simulation, the program is computing the signal to noise ratio of the sensor taking into account the photon shot, white and fixed pattern noises. Our basic analysis is based on camera equation to which we add the noises.

scholarly journals Development of a Pyrometer That Measures the True Temperature Field of the Two-Dimensional Array

2020 ◽  
Vol 10 (8) ◽  
pp. 2888
Author(s):  
Bojun Sun ◽  
Xiaogang Sun ◽  
Meisheng Luan ◽  
Jingmin Dai ◽  
Shuanglong Cui
Keyword(s):  
Temperature Field ◽  
Data Processing ◽  
Operation Time ◽  
Radiation Energy ◽  
Operational Efficiency ◽  
True Temperature ◽  
Signal Acquisition ◽  
Two Dimensional ◽  
Dimensional Array ◽  
Optical Part

This paper develops a two-dimensional array pyrometer, which can measure the true temperature field of the two-dimensional array. The pyrometer consists of an optical part, a circuit part and a software part. In the optical part, the radiation energy of the two-dimensional array target is obtained by scanning with the rotating mirror. Then, the radiation signal is converted and amplified by the circuit part. The software component realizes the functions of the pyrometer calibration, signal acquisition and data processing. The data processing adopts the secondary measurement method to calculate the true temperature and uses the multi-threaded method to improve the operational efficiency. Experiments show that the uncertainty of the two-dimensional pyrometer array can reach 1.43%. Compared with the single-threaded method, the true temperature operation time of the two-dimensional pyrometer array is improved by 77%, which verifies that the software operational efficiency is greatly improved.

scholarly journals An attempt to detect some electro-optical effects

1909 ◽  
Vol 82 (553) ◽  
pp. 224-226
Keyword(s):  
Magnetic Fields ◽  
Cross Section ◽  
Simple Form ◽  
Silver Film ◽  
Short Account ◽  
Optical Part ◽  
Propagation Of Light ◽  
Optical Effects ◽  
Electric And Magnetic Fields ◽  
Velocity Of Propagation

The following paper contains a description of some experiments made with the object of detecting possible effects due to electric and magnetic fields and moving matter on the velocity of propagation of light in glass. The results obtained were negative, but it seems worth while to publish a short account of the experiments. The optical part of the apparatus is a simple form of interferometer which proved very easy and convenient to work with. It consists of a square glass frame made up of glass bars of square cross-section cemented together with canada balsam. Three of the corners are cut off at 45°, as shown in the figure, and the fourth corner contains a half silvered surface FF. Light entering in the direction of the arrow A is divided into two beams by the silver film, which pass round the frame in opposite directions, being totally reflected at the cut-off corners. Half of each beam emerges in the direction of the arrow B, and the two beams at B are in a condition to interfere with each other.

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