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International Journal of Optics
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International Journal of Optics
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2019
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Article
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Fig 7
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Research Article
Optical and Reflective Characteristics Measurement and Focal Length Calculation of a Hollow Tetrahedral Corner and a Solid Highly Retroreflective Cubes
Figure 7
The Retroreflection index
R
[M
2
/Str] versus the focal length
f
[m].