SU134980A1 - Circular planned-promising aerial camera - Google Patents

Description

The proposed circular play-prospective aerial photographic camera makes it possible to cover with a single photograph a larger area of photographing than the known apparatuses.

This is achieved by using two lenses, one of which gives a planned image, and the second, using a double image prism, gives a perspective image of the area being photographed, as well as the fact that the diaphragm has a spinning swept-shaped sector slit.

The device can be used for mapping ice conditions of various kinds of hydrological surveys (currents, ice drift, waves), coordinating aerial photography routes and aero geophysical surveys, as well as for landscape and aerial descriptions.

FIG. Figure 1 shows the optical system circuitry; in fig. 2 shows the shape of a sector slit; in fig. 3-general scheme of the apparatus.

The image of the shooting area in the focal plane is formed with the help of two lenses 1 and 2, the optical axes of which are parallel.

Lens 1 gives a planned image of the terrain in the sector (3–60 °. A double internal reflection prism 3 is placed in front of lens 2, the deflection optical axis of this lens is 80 °. Lens 2 gives a perspective image of the terrain from 60 to 95 °.

The exposure of the film is carried out through the diaphragm in the form of a rotating sector slit 4 of the arrow shape shown in FIG. 2

When the entire optical system rotates around an axis that coincides with the optical axis of the lens /, terrain sectors are sequentially exposed on a fixed film.

No. 134980-2. After the optical system makes a complete revolution, a circular planned-perspective panoramic aerial photograph is obtained, covering the entire visible area from nadir to “95 ° around the entire circumference (360 °).

Each circular panoramic aerial photograph consists of two parts — the inner circle with a plan image of the area under the plane at the time of the shooting and an outer ring with a perspective image of the area from the line captured by the planned part of the picture to a line located 5 ° above the horizon. The horizon line in the image is obtained as a circle.

The apparatus consists of two main cassette assemblies 5, carrying the stock of the plank, and the body 6, which is a plateau in which the disk 7 rotates with an optics mounted on it.

The rotation of the disk is carried out at noMonj, n of motor 8 through gear reducer 9.

The disk 7 has a diaphragm in the form of a sector slit 4, through which the film is exposed when the disk is rotated. The part of the slit through which exposure is performed by lens 2, giving a perspective image, is made narrower to eliminate blurring from the inequality of the image scale given by the lens and the scale of the circular panorama at a given radius.

From the lower side to the disk 7, through special cones 10 and // strong lenses / and 2.

Subject and d on and e and

Claims (2)

1. A circular planned-perspective aerial photographic stack, characterized in that, in order to increase the coverage of one aerial photograph of the photographic area, it is equipped with two lenses, one of which gives a planned image, and the second, with a double image prism, gives a perspective image of the photographed terrain. 2. The circular planned-perspective aerocamera, according to claim 1, is distinguished by ni and also by the fact that the diaphragm has a false sector slit arrow-shaped.