SU636578A1 - Spectrozonal photo camera - Google Patents

Description

I

The invention relates to the field of photobiotechnics, namely to spectrozoal cameras with reflectors installed on the light beam path.

There are known spectral cameras, for which there are several (by the number of shooting channels) lenses, shutters and pleikoprots of the Annyh devices (1).

The disadvantages of these cameras are their large size and complexity of co-operation.

The known spectral camera contains a lens, a shutter, a film channel with a film device, light filters as leveling glasses and pressure tables, and a beam-splitting system made in the form of mirrors mounted behind the lens at an angle of 45 ° to its optical axis with the possibility of rotation | 2J .

However, such a device lacks reliability and complex construction.

The aim of the invention is to increase the reliability of operation while simplifying the design.

This goal is achieved by the fact that two mirrors are each connected to their gear gear, coupled to the rail, which is rigidly connected to the core of the electromagnet and the return spring, and the third mirror is stationary.

In addition, the alignment glass filters are placed at distances from each other equal to the length of the frame.

FIG. I schematically depicts the described camera; in fig. 2 - section A-A of FIG. one.

The device contains a lens I, a central inter-lens shutter 2, a zelizny disk shutter 3, mirrors 4-6, glass-light})) 7-9, film 10, pressure tables 11-13, receiving 14 and feeding 15 coils, the axes of rotation of mirrors 16 , 17, J8 bristles, rail 19, electromagnet 20 and return spring 21.

The camera works as follows.

Lens I has a built-in central inter-lens shutter 2 and one shutter speed. A lens shutter 3 is located behind the lens, which is a continuously and uniformly rotating

disk with a hole. After opening the shutter 2, the light rays passing through the lens pass through the hole in the shutter disk 3 and, reflected from the mirror 4 of the beam-splitting system, pass through the leveling glass filter 7, build an image of the object on the film 10 located on the pressure table 11. While the exposure hole of the shutter disc 3 passes outside the zone of light rays, the mirror 4 is rejected by the mechanism of the scraper-rail 18, 19 driven by the electromagnet 20 and, rotating around the axis 16, takes the position shown by the dotted line. At the next passage of the opening of the shutter disc 3 with light rays, they are reflected from the mirror 5 and, passing through the light filter 8, expose the film on the pressure table 12. Then the mirror 5 is rejected using a gear and a rail driven by an electromagnet (not shown ), with rotation around the axis 17, the position shown by the dotted line, during the third turn of the shutter disk 3, reflected from the fixed mirror 6, exposes the film through the light (|) 9 on the pressure gauge 13. After that, the shutter 2 closes and nlencont zhny .m The mechanism consisting of the receiving 14 and feeding the 15 coils rewinds the film to a length of three frames.

At the same time, the electromagnets 20 de-energize the return springs 21 through the gear 18 and the rail 19 send the mirrors 4 and 5 to the nervous position fixed by stops (not shown in the diagram). The camera is made to a new cycle; 1y and will work when the shutter 2 is opened again at the time of three turns of the shutter disk 3. Thus; shutter 2 can adjust the interval and temperature of shooting, and the effective shutter speed is adjusted by changing the speed of rotation of the shutter disk 3.

Since on the film the frames of one series are spaced at intervals equal to the frame length, and the rewind from series to series is made to the length of three frames, the whole length ii; i.e.fn H is useful. (Filter 7-9 and have different spectral characteristics of transmission, thanks to In one series, photographs of the object are obtained in three different zones of the spectrum, for example, in green, orange, and near infrared. The obtained spectrozonal images are de-encrypted using one of the known methods or by measuring optical densities on the lens using a scanning dexitometer with subsequent transfer to a computer, outputting the processed information and corrected black and white or color images, or by comparing photographs with each other, including the formation of a color image in the chromoscope.

Claims (2)

Invention Formula . Spectrozone. A digital camera containing a lens, shutter, filter. A new channel with a film-scanning device. cf, UTB () iltrami as leveling glasses and pressure tables, and a beam-splitting system, made in the form of a mirror ;, mounted behind the lens at an angle of 45 ° to its optical axis with the possibility of rotation, characterized in that By a simultaneous simplification of the structure, two mirrors are each connected to their gear gear, coupled with a rail, which is rigidly connected to the core of the electromagnet and a return spring, and the third mirror is made undecoded. 2. A camera according to claim 1, characterized in that the alignment of the glass-to-light is the light pattern. The frames are located at a distance from each other equal to the length of the frame. Sources of information taken into account in the examination: 1. US patent No. 3715962, CL. 95-12.5, 1973. -2 USSR author's certificate L 574693, cl. G 03 B 19/06, 1976. ftfpLie.