SU536458A1 - Film channel - Google Patents

Description

The invention relates to inotech.nie and wholesale, and to the o-mechanical industry, in particular: to the automatic distribution with a large light tray.

Known film channels, for example, for overhead projectors, it is equipped with air-blowing systems 2.

Similarly, movie films are known in which the dial during the projection is absorbed into the coolant 3.

Of the known devices, the one closest to the proposed device is the I1VLET1C device, which contains a transparent device (a veto, one of the walls of which is filled with elastic 1).

Due to the small thickness of the elastic wall, it has good thermal conductivity and transmits the taplo from the emulsion layer of the slide film (filmstrip) to the cooling water. OHOBipeMeHHO, the pressure of water through the electric wall presses the transparency film (filmstrip) to the glass base plate, corrects it, eliminating the risk of distortion. However, a significant disadvantage of this solution is the need to use: a slow circulating system with a pump, as well as the complexity and duration (10-15 seconds) of changing the projected di: a1Positive1, which requires pressure relief in the water or significant removal of the glass base plate from slide 141 .M from the elastic wall of water

cuvettes. In addition, frequent pressure relief in a water cuvette, which leads to the rapid occurrence of shocks and scratches on the surface of the transparent elastic wall, which degrades the quality of the projected image, i The purpose of the invention is to improve the scale and reduce the size.

To do this, in the proposed film channel, the water supply to the cuvette is made in В (Idea is connected to the introduced sheath of a closed sealed volume installed with the possibility of offsetting in a plane perpendicular to the optical axis P1 of the projector.

FIG. 1 shows the scheme of the proposed film channel; in fig. 2 - core disk magazine with a set of slides in axonometry.

On the one side, through the gaskets 2, wall 3 with additional lenses 4 (the number of which corresponds to the number of charged diatposites in the disk magazine) is pressed to the housing 1 of the sealed Water cuvette, on the other hand, a thin elastic transparent wall 5 is made , for example, of a lavsan film, pressed to the body through the oroclad 6 with the help of frame 7. In the frame there are openings in shape, size and quantity corresponding to transparencies 8, located in the disc magazine 9. For filling

water in the cuvette and the removal of air from it is one or two openings closed by plugs 10. To create a pressure in the cuvette, which presses a thin elascic wall 5 K of the surface of the diapositive 8, the cuvette is provided with a bellows // and a adjusting screw 12. Before the cuvette a heat filter 13 is installed, which reduces the infrared portion of the radiant flux incident on the rovatable film. The disk magazine, n 9, opens on a shaft 14, connected to a rotating plate 15, which has olor glass plates 16, the number and dimensions of iKOTQipbix correspond to transparencies 8. Then one of the holes b is put on the pin 17. Then to the plate 15 seconds ; see the spring-loaded latching of the IS kragtits water to the cuvette. The shaft 14 has the ability to move intermittently, thanks to, for example, the multi-cross 19, driven by the finger 1 M 20 and the locking shoulder 21, kinematically connected with the drive motor 22. The shaft 14 is not iodized during projection and rotates at the moment of changing the dia: positive: I1va. The device has the ability to change the projected slide with P01. Handwheel 23. Ele, the homepage 22 is attached to the adapter 24, in which the projection lens 25 is fastened 25. The adapter is inserted into the objective holder 26 of the projector or film projector.

On f | ig. 2 schematically shows a removable disk maker on the width of the slides 8. Diasions are ordinary frames that are at the corners, for example, using wire brackets 27 attached to a thin DI1SKU 9, which has a hole that corresponds to the number, shape and size of images slides.

When grrodeing, the light flux passes through the heat filter 13, the near-frame lens 4 placed in the housing / water cell, whose elastic transparent wall 5 is pressed against the surface of the transparency, and the transparency. The heat energy of the light flux is perceived by the water cuvette and the transparency does not undergo much heating.

When changing the slide, the disk 9 is rotated with the help of the Maltese cross 19 driven by the electric motor 22 or manually from the handle 23. Simultaneously with the disk, the housing 1 carrying the water cuvette is connected, which is connected to the disks by means of a pin 17 and holes b. Together with the change of the projected diaposite, the water section of your cell also varies, and the air flow passes through the foamy part of the cell.

I (my device provides the ability to quickly (in a fraction of a second) change the projection of my frame from a set in a disk store, as well as a fairly simple replacement

this store. Increased H; and: the service life of the transparent elastic wall. Because of their small size, the proposed device can be inserted into the size of the Operator of existing movie projectors.

In the onaican version of the water cuvette and the slide shop in the form of a rotatable: ix D1ISCOV, THAT provides you with the possibility of a continuous display of Wov diagrams without idling.

Obviously a similar task can be

solved and when doing and store

any other form with a translational, swinging (reciprocating and accessible m) is moved to us in a plane perpendicular to

optical axis inpoeiKTOpa.

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The proposed proposal allows significant | | to improve the quality of the show, because

image change is faster than in the existing ones. The design of the device as a whole is simplified, since the complicated coolant supply system is eliminated, the installation and maintenance of the installation is simplified, and the size reduction of the device makes the entire installation more portable.

Formula and 3 onbet e N 1I

A film channel, for example, for an overhead projector, containing a transparent water cuvette, one of the walls of which is made elastic, characterized in that, in order to simplify the construction and reduce the size, the water per cuvette is made in the form of a closed sealed volume connected to B, installed with the possibility of movement in a plane perpendicular to the optical axis of the projector.

Sources of information taken into account in the examination:

1.AiBTOpiCKoeov (And | USSR Childhood No. 184610, M. Kl.2 G 03 B 2..1 / 16, 1964 (prototy; P).

2. US patent number 3632198, cl. 353-60, 04.01.72.

3. Z.a Vka Yatonik number 49-9373, cl. 103 D 64, 03/04/74.

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