SU1490663A1

SU1490663A1 - Electrodynamic shutter

Info

Publication number: SU1490663A1
Application number: SU874321382A
Authority: SU
Inventors: Игорь Васильевич Венатовский; Павел Андреевич Жилин; Дмитрий Юрьевич Комягин
Original assignee: Ленинградский Институт Точной Механики И Оптики
Priority date: 1987-11-02
Filing date: 1987-11-02
Publication date: 1989-06-30

Abstract

Изобретение относитс к кинофототехнике, а именно к затворам высокоскоростных съемочных камер. Целью изобретени вл етс повышение быстродействи электродинамического затвора. Электродинамический затвор содержит шторку с механизмом ее перемещени , соединенным со схемой управлени . Новым в электродинамическом затворе вл етс то, что механизм перемещени шторки выполнен в виде жестко скрепленных одна с другой изогнутых упругих электропроводных пластин 1 и 2, расположенных между дополнительными неподвижными электропроводными пластинами 7,8 и 9,10. Схема управлени содержит генераторы тока, включающие конденсатор 24 или 28, тиристор 25 или 29, катушку индуктивности 26 или 30 и диод 27 или 31 соответственно. Электродинамический затвор может быть снабжен П-образным магнитопроводом, в воздушном зазоре которого размещен механизм перемещени шторки и на котором установлены катушки индуктивности 26 и 30. 1 з.п. ф-лы, 4 ил.FIELD OF THE INVENTION The invention relates to film photographic equipment, in particular, to gates of high-speed shooting cameras. The aim of the invention is to increase the speed of the electrodynamic gate. The electrodynamic shutter includes a shutter with a mechanism for its movement connected to the control circuit. New in the electrodynamic gate is that the mechanism for moving the shutter is made in the form of rigidly bonded one to another curved elastic conductive plates 1 and 2 located between additional fixed conductive plates 7.8 and 9.10. The control circuit comprises current generators comprising a capacitor 24 or 28, a thyristor 25 or 29, an inductor 26 or 30, and a diode 27 or 31, respectively. The electrodynamic gate can be equipped with a U-shaped magnetic core, in the air gap of which the mechanism for moving the shutter is placed and on which the inductors 26 and 30 are installed. 1 Cp f-ly, 4 ill.

Description

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Claims

Claim

1. An electrodynamic shutter comprising a shutter installed in the housing, rigidly connected to a control circuit, including two current generators connected through a delay circuit, characterized in that, in order to increase speed and simplify the design, the movement mechanism is made in the form of two parallel the planes of curved elastic plates rigidly fastened one on top of the other at the place of their maximum deflection by a strip on which the curtain is fixed, each of the elastic plates being located between two additional wearable fixed but installed and located symmetrically one relative to the other curved insulated plates, the bending profile of which is similar to the bending profile of elastic plates, 25 the first edges of the additional plates being located at the maximum deflection of the elastic plates and paired in parallel to the respective outputs of the current generators, and other edges of the additional plates are rigidly fixed in the housing through electrical contact together with the first ends of the elastic plates, the second ends of which They are also rigidly fixed in the housing and connected to a common point of the current generator, each of which contains a series-connected capacitor, thyristor, inductor, and a diode connected between the output of the thyristor and the common point of the current generators, and all the plates are electrically conductive.

2. The shutter according to claim 1, with the fact that it is equipped with a U-shaped magnetic circuit, in the air gap of which there is a mechanism for moving the curtain and on which are installed the inductors of current generators,

25> 23 22.23