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The angle measurement system intended for measuring angles between some directions set in the space by reflectors is presented in the report. The system operates by continuous rotation of platform with the autocollimating null-indicator and the ring laser or the holographic optical encoder.
The spectral BRDF of various common urban materials has been measured for the purposes of facilitating the further development of remote sensing in urban scenes. It is seen that the usual assumption of lambertian surfaces only hold for highly rough surfaces. For smooth manmade materials, the point of specularity not only has a higher magnitude, but could also differ in spectral shape from reflections...
Bragg character of a light diffraction on volume phase holographic gratings is considered as the basic of their applications in a number of classical and new optical instruments. Owing to high angular/spectral selectivity of the Bragg grating monochromators can be realised without application of input/output slits. Strengthening of an spectral dispersion due to the 3D-diffraction provides a single-mode...
We present real-time measurements of sessile contact angle variations by EWOD (electrowetting-on-dielectric) using QCM (quartz crystal microbalance). Different from the conventional contact angle goniometry, the QCM measurement abandons optical components involving in the system and hence has potential to prevent possible optical difficulties, such as blurred images caused by insufficient depth of...
The diameter and distribution measurements of nanoparticles on wafers are critical parameters in the semiconductor industry to ensure the quality of the transistors and increase the production rate. A goniometric optical scatter instrument has been developed at CMS / ITRI to readily perform polarized light scattering measurements for the diameter and distribution measurements of nanoparticles on wafers...
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