SU742858A1 - Testing and adjusting device - Google Patents

Description

(54) MONITORING AND ADJUSTMENT DEVICE

one

The invention relates to the field of photographic equipment, and more specifically to a device for determining the magnitude of the mismatch of the plane of the film channel poloes with the plane of installation of ground glass of the viewfinder of mirror single-lens cameras.

Devices are known to control the focusing of the lens and the coincidence of the field of view of the sighting part and 10 personnel window in single-lens devices in which the device under test with the lens and film is mounted on the seat, and the image on the surface of the film or other is viewed through the telescope material 1J.

However, these devices provide only a visual control of the focusing and coincidence of the borders of the field of 20 in the view of the target and the frame window in single-lens mirror devices and do not determine the actual magnitude of the error.

A control-adjusting device 25 is known, which contains a movable support for a controlled camera, an autocollimator, and an autocollimation microscope with micromechanisms of precise movements and an indicator 2J. thirty

The disadvantage of the device is that it does not provide accuracy of measurement, since the accuracy of control and the installation of ground glass are affected by: the depth of field of the camera lenses and collimators and the relative aperture of the camera lenses and collimators.

The aim of the invention is to improve the accuracy of the adjustment of the controlled planes.

This goal is achieved by that the device is additionally introduced with two flat mirrors mounted on controlled planes perpendicular to the optical axis of the autocollimator, and two concave spherical mirrors with the same radius of curvature, mounted on controlled planes, coaxially with the autocollimation microscope, and the numerical apertures of the spherical mirrors are equal to the numerical aperture microscope.

FIG. 1 shows a top view of a control - adjustment device without a controlled camera; Fig 2. - section aa of fig. 1 with a controlled camera installed against the automatic climate controller; in fig. j-section bb fig. 1 with a controlled camera mounted against an autocollimation microscope. The control and adjustment device contains a base 1, on which are installed: a movable stand for a controlled camera 2, an autocolator Limiter 3, an autocollimation microscope 4, a measuring indicator 5, two clamps 6. A controlled photo camera 7 without a lens and a frosted glass contains a tilting mirror 8 , cjnpaBy frosted glass 9, adjusting screws 10. In the optical system, consisting of the camera and autocollimator (Figs. 1 and 2), a flat mirror 11 is installed on the surface M, and the surface of the N is a flat mirror 12. In the optical system, consisting of a camera and an autocollimation microscope (Figures 1 and 3), a concave spherical mirror 13 is mounted on the surface of the ± and M, and a concave spherical mirror 13 and 14 has the same radius of curvature and numerical arteries on the surface N equal to the numerical aperture of the microscopic microscope of the autocollimation microscope 4. The concave spherical mirrors 13 and 14 increase the working distance of the microcolumn of the autocollimation microscope 4 by an amount equal to the radius of curvature of the mirror. Autocollimator 3 (Figures 1 and 2) contains: the illuminator 15, the light filter 16, the autocollimation grid 17, the luminous prism — the cube 18, the lens 19, the measuring grid 20 and the eyepiece 21. The planes of the strokes of the grids 17 and 20 are in the focal plane of the lens 19. The bar of the measuring grid 20 is in the focal plane of the ocular 21. The autocollimation microscope 4 (Fig. 1 and 3) contains: the illuminator 22 the optical filter 23, the autocollimation beam-splitting prism — the cube 25, the microobjective 26, the measuring grid 27, the oculus p 28 and three micromechanisms of progress 2 9.36 and 31. A stop 32 is rigidly attached to the body of the autocollimation microscope 4. against which the leg of the measuring indicator .5, mounted in rack 33, rigidly fixed to the base 1 rests. The optical axes of the autocollimator 3 and the autocollimation microscope 4 are parallel to each other and perpendicular to the direction of the movable support for the controlled camera 2. The device works as follows . To adjust the N plane of the opaque glass installation, the sight is perpendicular to the Plane M, the movable support 2 is installed against the autocollimator 3 (Figures 1 and 2). At that, the support is fixed by the fixer 6. The folding mirror 8 of the camera 7 is set to the horizontal position. Combining the autocollimation image to cross the grids 17 from the flat mirror 11 with the intersection of the measuring grid 20, the surface M is set perpendicular to the optical axis of the autocollimator 3. After installing the folding mirror 8 of camera V under 45, the surface N is perpendicular to the optical axis screws 10 on the autocollimation glare from a flat mirror: la 12. To determine the magnitude of the mismatch of the surface M with the surface N and align the center of the frame window with the center of the frame frame viewfinder and the camera 7 movable stand 2 with a controlled camera 7 set against autocollimation microscope 4 (Fig. 1 and 3). In this case, the stand is secured with a latch 6. The folding mirror 8 of the camera 7 is placed in a horizontal position. Micromechanisms 29, 30 and 31 precise movements of the autocollimation microscope 4 in three mutually perpendicular directions combine the subject plane of the autocollimation microscope 4 with the center of curvature of the concave spherical mirror 13 installed on the surface of the M camera 7, until it appears in the center of the cross grid of the autocollimation image cross the grids 24. In this position, the scale of the measuring indicator 5 is set to O. The folding mirror 8 of the camera 7 is set below 45 to the optical axis . Micromechanism 29 moves the autocollimation microscope 4 along the optical axis to align its object plane with the center of curvature of the mirror 14 and the appearance of: an autocollimation cross over grid 24 on the grid 27 sharp image of the autocollimation image. If the autocollimation image is not in the center of the grid 27, then the transverse movements of the frame 9 cameras 7 with a concave spherical mirror 14 achieve its alignment with the center to cross the grid 27. The value obtained on the scale of the measuring indicator 5 will indicate what value well, you need to raise or lower the plane N of the frame 9. If necessary, the process of adjustment and control is repeated only for the frame 9 of the camera 7 with the installation of alternately flat mirrors 12 and a concave spherical mirror 14. It is used to adjust the controlled planes of the mirrored single-lens cameras of the proposed device accuracy of adjustment, and excludes adjustment of the frosted glass plane of the camera sight

by photographing, improves the performance of control and trimming operations and reduces the consumption of auxiliary materials.

Claims (2)

1.Patent of France No. 1420544, cl. G 03 B 43/00, published 1965. 2. Elnikov N. G. and others. Assembly and adjustment of optical-mechanical devices. M., 1974, p. 246-248 (prototype).