SU715927A1

SU715927A1 - Interference resolvometer

Info

Publication number: SU715927A1
Application number: SU772556309A
Authority: SU
Inventors: Анатолий Савельевич Литвиненко
Original assignee: Предприятие П/Я В-2539
Priority date: 1977-12-19
Filing date: 1977-12-19
Publication date: 1980-02-15

Description

I I

Изобретение относитс к интерференционным средствам измерений и может быть использовано в фотометрии дл определени разрешающей способности фотоматериалов. .The invention relates to interference measurement tools and can be used in photometry to determine the resolution of photographic materials. .

Известны интерференционные резольвометры, основанные на записи интерференционных полей, полученных при разных углах ориентировани системы зеркало-пластинка с исследуемым фотоматериалом относительно облучающего их света , про влении фотопластинки и наблюдении с помощью микроскопа интерференционных полос , по которым суд т о разрешающей способности фотоматериала tilНаиболее близким техническим решением к предлагаемому изобретению вл етс интерференционный резольвометр, содержащий отклон ющее зеркало 2.Interference resolvometers are known, based on recording interference fields obtained at different angles of orientation of the mirror-plate system with the photographic material under investigation with respect to the light irradiating them, displaying the photographic plate and observing the interference bands using a microscope to judge the resolution of the photographic material til The invention is an interference resolver containing a deflecting mirror 2.

Недостатком указанного резольвометра вл етс сложность конструкции и низка точность измерений, обусловленные сложностью конструкции системь ориентации и вли нием условий окружающей среды за врем последовательной записи большого числа интерференционных картинThe disadvantage of this resolver is the complexity of the design and the low accuracy of the measurements, due to the complexity of the design, the system orientation and the influence of environmental conditions during the sequential recording of a large number of interference patterns.

Целью изобретени вл етс упрощение конструкции и повышение точности измерений.The aim of the invention is to simplify the design and improve the measurement accuracy.

Цель достигаетс тем, что в интерференционном резольвометрё, содержащем отклон ющее зеркало, зеркало выполнено в виде цилиндрической криволинейной поверхности с мен ющейс кривизной, например в виде звольвентно поверхности.На чертеже представлена схема предлагаемого устройства.The goal is achieved by the fact that in an interference resolvometer containing a deflecting mirror, the mirror is made in the form of a cylindrical curvilinear surface with varying curvature, for example, in the form of a sound-like surface. The drawing shows a diagram of the proposed device.

На пути луча источника 1 установлена телескопическа снсхема 2 и зеркало 3. Испытуема фотопластш1ка 4 установлена в держателе фотоматериала 5.On the path of the beam of source 1, a telescopic lens 2 and a mirror 3 are installed. Test photoplate 4 installed in the holder of photographic material 5.

Устройство работает следующим образом.The device works as follows.

Claims

The light beam from source 1 is expanded using a telescopic system 2 and simultaneously hits mirror 3 and photographic plate 4 fixed in the holder of photographic material 5. On the photographic plate 4 both the direct beam from the telescopic system 2 and the reflection of mirror 3 These rays interfere in the plane of the photographic plate. The inertial picture is fixed on the 3rd emulsion layer of the photographic plate 4. Since mirror 3 is made in the form of a curvilinear curved surface with a varying curvature, the rays that fall on the mirror will be reflected, and therefore fall on the photoplate at different angles depending on from changes in curvature. This makes it possible, in one exposure, not to change the angle of rotation of the mirror-layer system relative to the light irradiating light, to record interference voices, whose frequency in the nnocCocfH photographic plate continuously varies. Using a microscope, it is easy to determine the parameters of photographic materials using an developed photographic plate. 6, as a curved mirror, it is convenient to choose an involute cylinder, the curvature of which at each point varies depending on the angle of evolu- tion of the involute. In addition, involute cylinders are the most common curvilinear surfaces. Thus, the proposed interferometer resolvometer has a simpler design, due to the fact that it does not require a turning mechanism 7 that changes its position of the mirror-layer system relative to the light that irradiates them. In addition, the recording of information on a photographic plate is made in one exposure, which allows to increase the accuracy and speed up the measurement process. Claims. An interference resolvometer containing a deflecting mirror, characterized in that, in order to simplify the design and improve measurement accuracy, the mirror is made in the form of a cylindrical curvilinear surface with varying curvature, for example, in the form of an involute surface. / -1 Sources of information taken into consideration during the examination 1. USSR author's certificate No. 212751, cl. G 03 S.5 / 02, 13.01.67.

2. Authors certificate of the USSR N 207018, cl. G 03 C 5/02, 04.02.67.