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Lovchi I.L.,Scientific Research Institute for Comprehensive Testing of Optoelectronic Devices and Systems
Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | Year: 2010

This paper discusses how birefringence in the elements of the optical channel affects the result of the computation of the relative rotation of objects when a polarization method is used to determine the angle. A method of dual-spectral probing of the optical channel is proposed and experimentally checked that makes it possible to automatically determine the optimum relative rotation of the elements to minimize the influence of birefringence. © 2010 Optical Society of America. Source


Medennikov P.A.,Scientific Research Institute for Comprehensive Testing of Optoelectronic Devices and Systems
Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | Year: 2010

This paper presents an algorithm for constructing the convex envelope of an object, based on an analysis of the derivative of the chain code of its boundary. The construction process consists of selecting boundary points with a positive derivative that satisfy a proposed convexity condition. Such points determine the vertices of a closed polygon that is the convex envelope of the object. A method is proposed for estimating the number of holes and the convexity coefficient, based on the ratio of the perimeters of the object and of its convex envelope. © 2010 Optical Society of America. Source


Lovchii I.L.,Scientific Research Institute for Comprehensive Testing of Optoelectronic Devices and Systems
Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | Year: 2010

This paper describes the features of the formation of measurement signals in a polarimetric ac magnetooptical sensor with a twist-type lightguide and algorithms for processing them. The results of modelling the sensor's reaction to the variation of the parameters of the sensitive loop are presented. The calculational characteristics are compared with the parameters of prototypes of the sensor. © 2010 Optical Society of America. Source


Lovchii I.L.,Scientific Research Institute for Comprehensive Testing of Optoelectronic Devices and Systems
Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | Year: 2010

This paper discusses the features of the transformation of the polarization state of light when it propagates along a spun-type lightguide. The compensation setup of a polarimetric current transducer with a double pass of the sensitive loop is described. Based on the modelling results, a formula is derived for the dependence of the transducer sensitivity on the polarization characteristics of the lightguide and the size of the measurement loop. Results are presented from a measurement of the relative sensitivity of a prototype of the transducer. © 2010 Optical Society of America. Source


Potapova N.I.,Scientific Research Institute for Comprehensive Testing of Optoelectronic Devices and Systems
Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | Year: 2012

It is shown that the use of basic lenses with aspheric surfaces makes it possible to create various types of optical systems. Designs are proposed for ophthalmic objectives based on the use of basic aspheric lenses with compensated spherical and field aberrations. Ophthalmic objectives have been developed with two aspheric high-refraction correction surfaces with refraction from 80 to 116 diopters and a field of view 2ω from 90° to 118°. © 2012 Optical Society of America. Source

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