Causes of the in-service damage to hydrocylinder liners were investigated, and requirements their working surfaces systematized. Roughness parameter Ra was found not provide a precise estimate surface quality because its reduction did affect microgeometry. Additionally, assessed by Abbott-Firestone curve during finishing operation. The optimized manufacturing technology for obtaining offered ba...

We propose a method for calculating the so-called multi-wavelength diffractive lenses (MWDLs) intended separating and focusing radiation of L given wavelengths to points located in certain plane perpendicular optical axis. The is based on minimizing objective function characterizing deviation complex transmission functions MWDL from design points. In method, calculation reduced set independent ...

This paper proposes and describes an implementation of a photometric stereo-based technique for in vivo assessment of three-dimensional (3D) skin topography in the presence of interreflections. The proposed method illuminates skin with red, green, and blue colored lights and uses the resulting variation in surface gradients to mitigate the effects of interreflections. Experiments were carried o...

The paper is devoted to the results of microscopic analysis structure fire-resistant materials developed on basis local mineral raw materials. authors point out that in this regard, a special place occupied by refractory materials, because use various radiation and designs microscopes from optical electronic requires preparation objects methods for deciphering observed images. Moreover, these r...