SU298024A1 - DEVICE FOR OBTAINING OPTICAL - Google Patents

Description

This invention relates to capturing and restoring an image obtained on a magnetic film with a small domain structure.

Devices for obtaining an optical image on such a film contain electromagnetic units for creating uniform magnetic fields on the film for orientation and recording.

In order to simplify the construction, the proposed device is made in the form of a camera, in the image plane of which, instead of the usual photosensitive film, there is a magnetic panel formed by a film with a small-domain structure and a magnetic colloid sealing layer applied to its outer surface.

Electromagnetic blocks are installed in the camera body, as well as an observational optical system installed behind the panel with an optical axis lying on the extension of the camera axis and a light source for visualizing the image at an angle to the optical axis equal to the diffraction angle.

FIG. 1 is a schematic diagram of the device; in fig. 2 is a wiring diagram of the electromagnetic units of the device; in fig. 3 - magnetic panel.

thermal recording on a magnetic film with a small domain structure.

The recorded radiation using a lens / camera is focused on the magnetic panel 2. The installation of aperture 3 and exposure is carried out as in normal photography. Using an electromagnetic unit 4 orientation, connected by key 5 until the camera shutter is triggered,

the magnetic film 6 of the panel 2 is reset, in which the direction of the magnetic field of the film is set in accordance with the direction of the field created by block 4. Then block 4 is disconnected, connected with the aid of a button 7 to the electromagnetic block 8 for recording the image and immediately performing exposure. The direction of the field created by the recording unit 8 is normal with respect to the orientation field created by block 4. The orientation and recording zero values are chosen by introducing the corresponding resistances in the power supply circuit of the corresponding electromagnets from the battery. Since the magnetization of different areas of the film during exposure changes in direction according to the heating of these areas, depending on the projected image, but remains after turning off the recording unit 8, on the surface

latent image-corresponding to the distribution of magnetization. On the surface of the film 6, there is a colloid sealing layer 9, in which powder shapes are created, which repeat the latent image. When these figures are illuminated at the diffraction angle using the light source built into the camera 10 through a condenser // and a magnifying glass, the rendered image can be viewed.

In order to obtain images in different spectral ranges, interchangeable lenses should be provided in the camera, which should be placed on a rotating turret, for example, on axis 72, as shown in FIG. one.

The device does not require a viewfinder, since the focusing on the object and on the object is controlled directly in the image.

Subject invention

A device for obtaining an optical image on a magnetic film with a small-domain structure, containing electromagnetic blocks for creating uniform magnetic fields on the film, orientation and recording, characterized in that, in order to reflect the design of the device, it is made

in the form of a camera, in the plane of the image of which a magnetic panel is placed, formed by a magnetic film with a sealing magnetic colloid applied on it, and electro-magnetic units embedded in the camera body, as well as an observational optical system installed behind the panel, such as a magnifying glass, with an optical axis lying on the extension of the camera axis, and the light source for imaging at an angle

to the optical axis equal to the diffraction angle.

FIG I

Fig 2

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