By Kai-Erik Peiponen, Risto Myllylä, Alexander V. Priezzhev
Dedicated to novel optical size ideas which are utilized either in and lifestyles sciences, this ebook contributes a clean point of view at the improvement of contemporary optical sensors. those sensors are frequently crucial in detecting and controlling parameters which are very important for either business and biomedical purposes. The e-book offers quick access for newcomers wishing to achieve familiarity with the techniques of recent optics.
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Additional resources for Optical measurement techniques: Innovations for industry and the life sciences
In improving security of vehicles. 3 DOE as an On-Line Thickness Gauge of Float Glass The DOE in the present case is a computer-generated hologram . The DOE, presented in Fig. 2, was calculated by using Rayleigh–Sommerfeld diﬀraction integral , and it is an on-axis binary-amplitude hologram whose 34 3 Machine Vision Systems Fig. 2. Diﬀractive optical element transmission is 50%. The output pattern of the planar DOE, when constructed by an expanded laser beam, is a regular array 4 × 4 light spot matrix.
In Fig. 6 we show an example of the development of the specular reﬂection from starch acetate compact as a function of the angle of incidence and using CCD camera as a detector. Fig. 6. Development of specular reﬂection pattern from starch acetate compact. 3 Measurement of Surface Roughness Using Laser Beam 51 From the images of Fig. 6 we observe that for a relatively low angle of incidence a speckled pattern appears, whereas for a relatively high angle of incidence specular reﬂection becomes relatively strong.
In the event of ﬂuorescent porous objects, care has to be taken in the interpretation of diﬀuse spectra. In Fig. 11 we show diﬀuse reﬂection spectra gained from two diﬀerent papers obtained from paper mill. It is evident from Fig. 10 that diﬀerent paper grades cause diﬀerent spectral features in paper. , in research and development of paper products. 12 presents a modern multimode laboratory device for paper mills. There are various mechanical and optical measurement modes in the sensor head of Fig.