Ring Laser for Angle Measurement Devices

2021 ◽  
pp. 775-784
Author(s):  
Irina Cherepanska ◽  
Olena Bezvesilna ◽  
Artem Sazonov ◽  
Petro Melnychuk ◽  
Valerii Kyrylovych
Keyword(s):  
Ring Laser ◽  
Angle Measurement ◽  
Measurement Devices

One-shot Multi-angle Measurement Device for Evaluating the Sparkle Impression

2020 ◽  
Vol 2020 (5) ◽  
pp. 60401-1-60401-8
Author(s):  
Shuhei Watanabe
Keyword(s):  
Spatial Frequency ◽  
Product Design ◽  
Angle Measurement ◽  
Observation Angle ◽  
Light Sources ◽  
Quantification Method ◽  
Material Appearance ◽  
Subjective Score ◽  
Measurement Devices ◽  
Rotation Stage

The quantification of material appearance is important in product design. In particular, the sparkle impression of metallic paint used mainly for automobiles varies with the observation angle. Although several evaluation methods and multi-angle measurement devices have been proposed for the impression, it is necessary to add more light sources or cameras to the devices to increase the number of evaluation angles. The present study constructed a device that evaluates the multi-angle sparkle impression in one shot and developed a method for quantifying the impression. The device comprises a line spectral camera, light source, and motorized rotation stage. The quantification method is based on spatial frequency characteristics. It was confirmed that the evaluation value obtained from the image recorded by the constructed device correlates closely with a subjective score. Furthermore, the evaluation value is significantly correlated with that obtained using a commercially available evaluation device.

Rotation angle measurement using a solid state ring laser

1995 ◽  
Author(s):  
S. H. Son ◽  
J. M. Hong ◽  
H. J. Song ◽  
T. K. Sung ◽  
Sang K. Gil ◽  
...  
Keyword(s):  
Solid State ◽  
Ring Laser ◽  
Rotation Angle ◽  
Angle Measurement

Angle Measurements with Laser

2012 ◽  
Vol 239-240 ◽  
pp. 206-213
Author(s):  
Yang Wang ◽  
Chang Xiang Yan ◽  
Zhi Liang Gao
Keyword(s):  
Ring Laser ◽  
Angle Measurement ◽  
Internal Reflection ◽  
Laser Interference ◽  
Reflection Effect ◽  
Angle Measurements

Laser is widely used in angle measurements. This paper presents several frequently used methods of angle measurement that utilize laser, including：autocollimation angle measurement, angle measurement based on internal-reflection effect, laser interference angle measurement, angle measurement with ring laser and angle measurement with CCD. The principle, actualities, application situation, superiority and defects of each method are discussed.

Precision angle measurement in a diffractional spectrometer by means of a ring laser

1998 ◽  
Vol 9 (7) ◽  
pp. 1067-1071 ◽  
Author(s):  
M N Bournachev ◽  
Yu V Filatov ◽  
K E Kirianov ◽  
D P Loukianov ◽  
A F Mezentsev ◽  
...  
Keyword(s):  
Ring Laser ◽  
Angle Measurement

Accuracy of hoof angle measurement devices in comparison with digitally analysed radiographs

2010 ◽  
Vol 17 (6) ◽  
pp. 319-322 ◽  
Author(s):  
M. Moleman ◽  
M. C. V. van Heel ◽  
A. J. M. van den Belt ◽  
W. Back
Keyword(s):  
Angle Measurement ◽  
Measurement Devices

Angle Measurement Using Ring Laser

1979 ◽  
Vol 45 (529) ◽  
pp. 95-99
Author(s):  
Kouji TOYODA ◽  
Yoshimasa SAKURAI
Keyword(s):  
Ring Laser ◽  
Angle Measurement

scholarly journals One-shot Multi-angle Measurement Device for Evaluating the Sparkle Impression

2019 ◽  
Vol 63 (6) ◽  
pp. 60401-1-60401-8 ◽  
Author(s):  
Shuhei Watanabe
Keyword(s):  
Spatial Frequency ◽  
Product Design ◽  
Angle Measurement ◽  
Observation Angle ◽  
Light Sources ◽  
Quantification Method ◽  
Material Appearance ◽  
Subjective Score ◽  
Measurement Devices ◽  
Rotation Stage

Abstract The quantification of material appearance is important in product design. In particular, the sparkle impression of metallic paint used mainly for automobiles varies with the observation angle. Although several evaluation methods and multi-angle measurement devices have been proposed for the impression, it is necessary to add more light sources or cameras to the devices to increase the number of evaluation angles. The present study constructed a device that evaluates the multi-angle sparkle impression in one shot and developed a method for quantifying the impression. The device comprises a line spectral camera, light source, and motorized rotation stage. The quantification method is based on spatial frequency characteristics. It was confirmed that the evaluation value obtained from the image recorded by the constructed device correlates closely with a subjective score. Furthermore, the evaluation value is significantly correlated with that obtained using a commercially available evaluation device.

scholarly journals Automatic Calibration System for Precision Angle Measurement Devices

2014 ◽  
Vol 4 (3) ◽  
pp. 163-167
Author(s):  
Wang Yung-Cheng ◽  
Shyuw Lih-Horng ◽  
Eberhard Manske ◽  
Chang Chung-Ping ◽  
Eberhard Manske ◽  
...  
Keyword(s):  
Angle Measurement ◽  
Automatic Calibration ◽  
Calibration System ◽  
Measurement Devices
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