Entity

Time filter

Source Type


Dorofeeva M.V.,NPO State Institute of Applied Optics
Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | Year: 2010

This paper discusses the operation of a right-angle scanning prism mounted inside a spherical cowl. It is shown that the parameters and the relative placement of the prism and the cowl affect the image quality of the optical system in the process of scanning the viewing zone. © 2010 Optical Society of America. Source


Belokopytov A.A.,NPO State Institute of Applied Optics | Shakirov N.F.,NPO Setal
Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | Year: 2010

A spectrograph intended foranalyzing metals, alloys, rocks, and soils has been developed. The optical layout of the spectrograph is based on a concave holographic diffraction grating, recorded in nonhomocentric beams and mounted on a Rowland circle. This paper presents the results of a calculation of the optical layout of the spectrograph and of the aberrational characteristics of concave holographic diffraction gratings, a holographic apparatus on which a second-generation grating is recorded, and samples of spectra obtained on a prototype of the spectrograph. © 2010 Optical Society of America. Source


Lukin A.V.,NPO State Institute of Applied Optics
Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | Year: 2012

This paper demonstrates how the degree of temporal coherence of the radiation of gas-discharge and semiconductor lasers depends on the discharge current (the pump current) and diffraction losses. Experimental results obtained by means of a Fabry-Perot etalon and an equal-arm Michelson interferometer with a diffraction grating are presented. © 2012 Optical Society of America. Source


Kuks V.G.,NPO State Institute of Applied Optics
Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | Year: 2012

This article briefly describes the results of the development and use at NPO GIPO of a full-size tool with an aspheric working surface for grinding. Aspherization is carried out with free abrasive on domestically produced Planeta machines, developed in the 1970s-80s by specialists at NPO GIPO and the Minsk Mechanical Factory and fabricated in Smorgon' (Belarus). © 2012 Optical Society of America. Source


Larionov N.P.,NPO State Institute of Applied Optics | Lukin A.V.,NPO State Institute of Applied Optics
Journal of Optical Technology (A Translation of Opticheskii Zhurnal) | Year: 2010

This paper describes a technique for monitoring off-axis aspheric mirrors. The question of measuring the distance from the center of the reflective surfaces of off-axis aspheric mirrors to the optical axes of the corresponding axisymmetric aspheric surfaces of revolution is considered in detail. The monitoring device consists of a Twyman-Green interferometer and a linear-displacement meter. The working branch of the interferometer contains a synthesized holographic optical element consisting of three coaxial axial synthesized holograms, produced on the common working surface of the substrate; the linear-displacement meter contains a viewing microscope. This technique can be used when monitoring off-axis aspheric mirrors with either concave and convex reflective surfaces for various optical systems, as well as aspheric segments of optical-telescope mirrors, including mirrors whose positioning is being monitored. © 2010 Optical Society of America. Source

Discover hidden collaborations