SU1337862A1 - Fibre-optic vision device - Google Patents

Abstract

The invention relates to fiber optics and allows an increase in the field of view by increasing the light transmission at the edge of the field of view. In the focal plane of the lens 1 a transparent two-dimensional flat diffraction grating (DR) 3 is placed, aligned with the plane of the input torp of the fiber element 2. DR 3 forms beams within aperture angle of optical fibers. To ensure a uniform increase in the field of view along all the fibers of element 2, DP 3, is installed with the possibility of rotation around its normal, coinciding with the optical axis of element 2. The speed of rotation of PD 3 is due to the continuity of visual perception. 1 il.

Description

The invention relates to fiber optics, in particular, fiber endoscopes.

The purpose of the invention is to increase the angular field of view of the device by increasing the light transmission at the periphery of the field of view.

The drawing shows the proposed device.

The monitoring device contains a wide-angle lens 1, a fiber element 2 in the form of a regular bundle of optical fibers, a flat transparent two-dimensional diffraction grating 3, aligned with the input end of element 2 and located in the focal plane of the lens 1, an eye of the eye 4. Grate 3 is rotatably mounted around its normal, coinciding with the optical axis of the fiber element.

The diffraction grating converts the rays with angles that transform the aperture angle of the optical fibers of the bundle into rays with smaller angles within the aperture angle. This is especially significant in the peripheral part of the input end of element 2. To preserve the light transmission {Grid you

Editor N.Kishtulinets

Compiled by I. Alexandrov Tehred V. Kadar

Order 4129/46 Circulation 521

VIIIPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

full of transparent. In order for the increase in field of vision to take place along any element 2, the grid is rotatable around the system, and the speed of rotation must be chosen from the condition of continuity of visual perception. The rotational speed of a two-dimensional lattice under this condition can be four times smaller than for a one-dimensional one. Such a lattice does not distort the color of the observed objects.

Claims (1)

Claim 1 A fiber surveillance device containing a lens, a glass-optical element and an eye-piece, characterized in that, in order to increase the field of view by increasing the light transmission at the edge of the field of view, a transparent two-dimensional flat diffraction grating is inserted into the focal surface of the lens the end of the fiber-optic element and mounted for rotation around its normal, coinciding with the optical axis of the fiber-optic element. Proofreader A.Obruchar Subscription