ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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Summaries of the issue

OPTICAL-ELECTRONIC DEVICES AND SYSTEMS

INFORMATION LOSSES UNDER FIELD TRANSFORMATION IN OPTICAL PATH OF AN OPTOELECTRONIC INSTRUMENT Zvereva Elena N, Lebedko Yevgeny Georgievich, Phi Huang Tung
7
Loss in normalized entropy of spatial distribution of radiation flux in optical path of an optoelectronic instrument with matrix photo-detector is considered.
11
Specific features of image vignetting in autocollimation system are analyzed. Algorithmic methods of compensation for systematic error are considered. Basic principles of a computer model developed with the use of computer simulation.
OPTICAL-ELECTRONIC SYSTEM FOR RAPID ANALYSIS OF MINERAL RAW MATERIALS BY COLOR SORTING METHOD Alekhin Artem A, Gorbunova Elena V., Korotaev Valery Viktorovich, Alexander M. Olkhovskiy, Petukhova D.B., Alexander Chertov
15
Principles of design of optical-electronic system for mineral raw materials rapid analysis are considered. Experimental results are presented to confirm the efficiency of the developed system application in mining industry.
21
A method is proposed for calculation of trihedral mirror parameters to be used as reflectors in a simplestructure autocollimator for measurement of three angular coordinates. Examples of calculated reflector parameters for three-coordinate measurements are presented and discussed.
ALGORITHMS OF SMOKE-BLACKENED IMAGE FILTERING Vasiliev Alexander S, Andrey V. Krasnyaschikh, Oleg Lashmanov
26
The problem of reduction of smoke-induced defects of images in wildfire detection and monitoring system is considered. Comparative analysis of various filtering algorithms applied to smoke-blackened images is carried out.
OPTICAL-ELECTRONIC SYSTEM FOR CONTROL OVER POSITION OF PISTON IN THE VALVE Alexey А. Gorbatchev, Korotaev Valery Viktorovich, Ekaterina N. Pantiushina
29
Principles of construction of an optical-electronic system for control over transversal displacement of piston in the valve are described. Results of laboratory tests of the system are presented.
33
An algorithm combining procedures of interframe and frame-by-frame analysis of signals in automated system of moving objects monitoring under complex observation conditions is studied. Results of statistical modeling are presented to demonstrate the developed algorithm efficiency.

APPLIED AND COMPUTER OPTICS

TELESCOPIC LENS WITH AFOCAL DOUBLE-MIRROR OPTICAL ATTACHMENT Zverev Victor Alexeevich, Karpova Galina Vasilievna, Тимощук И. Н.
39
Replacement of a convex reflecting surface in afocal system of two spherical mirrors with a plane-convex mirror with internal reflection is shown to allow for compensation for residual spherical aberration of the image at a small residual deviation from isoplanatism conditions. Combination of two-component telescopic lens with the afocal attachment makes it possible to ensure plane-anastigmatic image correction.
WAVE ABERRATION OF THE POINT SOURCE IMAGE AT THE CENTRAL SHIELDING OF ENTRANCE PUPIL Ермолаева Е. В., Zverev Victor Alexeevich, Тимощук И. Н.
47
Conditions are defined under which wave aberration for both extreme rays at an entrance pupil of optical system and rays at the beam shielded part border equal zero. The conditions fulfillment is shown to reduce considerably residual wave aberration of the point source image.
ALTERNATIVE SCHEMATICS OF REFLECTION OPTICAL SYSTEM WITH SPHERICAL MAIN MIRROR Ермолаева Е. В., Zverev Victor Alexeevich, Julia A. Podgornykh
50
Alternative variants of reflection system based on an afocal assembly of two reflecting surfaces are analyzed. The schematics under consideration are obtained by transformation of Cassegrain and Gregory mirror systems.
55
On the base of requirement of spherical and chromatic aberration correction, formulas defining overall dimensions and structural parameters of an optical system with concentric refracting and reflecting surfaces are derived. Relations used to specify the optimal choice of material for lens elements are also obtained.
AUTOMATION OF DATA PROCESSING IN OPTICAL SYSTEM TESTING WITH HARTMANN TECHNIQUES Vladimir E. Maliutin, Nadezhda Tolstoba, Edward V. Emelyanov, Grigory V. Yakopov
62
The problem of automatic processing required by Hartmann method of optical system testing is discussed. The stage of scattering spots separation is considered; algorithms developed for spots location are presented.

COMPUTERIZATION AND DESIGN OF OPTICAL DEVICES

METHODS OF LENS CENTERING IN OPTICAL SYSTEMS Latyev Svyatoslav M, Bao Buy Din
66
The causes affecting lens centering in objectives are considered. Technological and constructional methods to compensate the resulting effect on image quality are analyzed.
73
Conception of three-coordinate optoelectronic designator development is discussed. Application of readymade electronic sensors is shown to ensure a significant increase in the speed of measurement, while the devise dimensions are decreased and development and production cost is reduced.
DIFFRACTION METHODS FOR CONTROL OF OBJECT POSITION Иванов А. Н., Valery E. Kireyenkov, Mariana D. Nosova
78
Diffraction methods adapted for measurement of object linear and angular movements are proposed. The phase inversion points are used for angle measurement, which allows for improvement in measurement sensitivity up to 0,05".

LED TECHNOLOGY

OPTIMIZATION OF RETROFIT LED LAMP RADIATOR Ivan N. Ivukin, Alexander Yu. Belov, Bougrov Vladislav E, Alexey R. Kovsh, Maxim A. Odnoblyudov, Romanov Alexey E
83
Effect of radiator shape on retrofit LED lamp heat sink is studied. Results of computer simulation of free convective gas flow in the radiator vicinity and of heat exchange in heat sink system elements are presented.
DEGRADATION OF WHITE AND BLUE LEDS AT PROLONGED OPERATION TIME Kseniya Vinogradova, Bougrov Vladislav E, Alexey R. Kovsh, Maxim A. Odnoblyudov, Nikolaev Vladimir I, Romanov Alexey E
87
Time dependences of forward voltage drop in blue and white LEDs operating at 20, 25, and 30 mA during 21,000 hours are investigated. White LEDs based on a silicate phosphor with CCT of 4500 K is shown to enhanced degradation.

ENVIRONMENTAL INSTRUMENT-MAKING AND MONITORING

92
Application of laser interferometric refractometer “LAZIR-2MKˮ for reference materials - calibration gas mixtures attestation is considered. Principle of the refraktometer operation is described; optical schematic of the instrument is presented.
95
Reference samples of anesthetic gases applied for metrological maintenance of gas analysis units of bedside monitors are described.