Bandwidth Measurement Method for Quasi-Monochromatic Light Sources

2009 ◽  
Vol 58 (8) ◽  
pp. 2606-2610 ◽  
Author(s):  
A.W. Domanski ◽  
D. Budaszewski ◽  
R. Cieslak ◽  
T.R. Wolinski
Keyword(s):  
Measurement Method ◽  
Monochromatic Light ◽  
Light Sources ◽  
Bandwidth Measurement

Study on paper moisture measurement method by monochromatic light sources

2010 ◽  
Author(s):  
Changtao Mo ◽  
Xin Du ◽  
Ping He ◽  
Lili Zhang ◽  
Nan Li ◽  
...  
Keyword(s):  
Measurement Method ◽  
Monochromatic Light ◽  
Light Sources ◽  
Moisture Measurement

Study on paper's basis weight measurement method by double monochromatic light sources

2016 ◽  
Author(s):  
Changtao Mo ◽  
Guangming Wang ◽  
Shuai Huan ◽  
Jingji Wen ◽  
Zhidan Xu ◽  
...  
Keyword(s):  
Measurement Method ◽  
Monochromatic Light ◽  
Light Sources ◽  
Weight Measurement

scholarly journals Measurement of Relative Position of Camera and Optical Beacon by Simultaneous Passive Method

2019 ◽  
Vol 8 (1) ◽  
pp. 1 ◽  
Author(s):  
Jiri Nemecek ◽  
Martin Polasek
Keyword(s):  
Mathematical Model ◽  
Relative Position ◽  
Analytical Method ◽  
Measurement Method ◽  
Position Angle ◽  
Experimental Measurements ◽  
Light Sources ◽  
Passive Measurement ◽  
Passive Method ◽  
The Mathematical Model

The paper deals with a problem of a passive measurement of the relative position of an optical beacon and an optical camera by a simultaneous analytical method. The beacon is composed of nine light sources which are arranged in space in a defined way. The proposed beacon layout enables the measurement of the beacon range and one position angle of the camera. This paper presents the mathematical model of the measurement method and the results, which were gathered on the basis of two experimental measurements. The first experiment was only indicative. The extreme results of the second experiment were as follows: the minimum and maximum absolute percentage errors of the beacon range were zero and 1.72%, the minimum and maximum errors of the position angle were 0.1 deg and 1.64 deg. The standard commercial cameras and lenses with different focal lengths were used.

Octagon Modelling Using Parallel Projection of Optical Tomography

2014 ◽  
Vol 70 (3) ◽  
Author(s):  
Naizatul Shima Mohd Fadzil ◽  
Ruzairi Abdul Rahim ◽  
Juliza Jamaludin ◽  
Siti Zarina Mohd Muji ◽  
Mohd Fadzli Abdul Sahib ◽  
...  
Keyword(s):  
Measurement Method ◽  
Optical Tomography ◽  
Hardware Design ◽  
Parallel Projection ◽  
Light Sources ◽  
Vertical Column ◽  
Cross Sectional ◽  
The Cross

This paper presents a hardware design, arrangement and measurement for optical tomography where optical tomography uses light sources as the transmitter and photodiodes as the receiver. By using parallel projection for 44 laser transmitters and photodiode receivers at the cross-sectional boundary, the existence of bubbles inside a vertical column pipeline is determined. Octagon modelling with an eight-sided jig is used for projection and the measurement method for this research is shown. An offline technique is used to collect readings from each signal and the image is reconstructed from the data received.

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