SU1569769A1 - Fibre-optical converter of angular velocity of bundle of rays - Google Patents

Abstract

The invention relates to fiber optics, in particular to fiber optic converters, and can be used in devices for rotating and compensating for the rotation of a beam of rays. The purpose of the invention is to simplify and increase the reliability of the converter. The fiber optic converter of the angular speed of rotation of the beam consists of a fiber optic bundle 1, the fiber light guides of which are assembled by one ends into the first ring 2, and the other ends into the second ring 3. In this case, the optical fibers located in the first ring 2 with an angular pitch of 360 ° / @ K @, in the second ring 3 are placed along the corresponding radius, where K is the conversion factor. Moreover, depending on the sign of K, the order of the optical fibers in the second ring 3 coincides or is opposite to the order of their following in the first ring 2. The light beam on the output ring of the converter has an angular velocity of rotation changed by K times compared to its angular velocity at the input ring. 1 hp f-ly, 3 ill.

Description

The invention relates to fiber optics, in particular fiber optic converters, and can be used in devices for rotating and compensating for the rotation of a beam of rays.

The aim of the invention is to simplify and improve the reliability of the converter.

FIG. 1 shows a converter with a conversion factor K 2, a general view, in FIG. 2 shows the layout of optical fibers at the first annular end of the bundle; in fig. 3 - the same, on the second ring

the end of the converter bundle with a K 3 conversion factor.

The converter contains a bundle of optical light guides 1, one ends of which are evenly laid in n concentric layers of the first ring 2, and the other ends are laid in m concentric layers of the second ring 3. In this case, one ends of the optical fibers form an optical one. an input of the converter, and other optical output, and one end of the optical fibers is chosen as input or output, based on the value of the specified conversion factor K. When

SP

F CO vl

About SD7 1 (K 1,2,3, ..., q) optical / stroke converters form the ends of vetovodov of the first ring 2 ,. and at

„, /“. I llК

K 1 (K g, C 4 sG optic

the transducer input is formed by the ends of the optical fibers of the third ring 3. The layer of layers n in which one ends of the optical fibers are laid, and the number of layers m in which the other ends of the optical fibers are placed are chosen from the condition 1K / -P, where (for the conversion coefficient, its inverse value ).

The number of light guides laid in each of the n concentric layers of the first ring 2 is a multiple of K. In this case, the fibers of one layer of the first ring 2 are laid equally in the K layers of the second ring 3 "

The fibers in the layers of rings 2 and 3 are arranged. So, the order of their following around the circumference of the second ring 3, depending on the sign of the conversion coefficient K, is the same or opposite to the order of their following in the first ring 2,

Fiber guides, the ends of which are laid in the first ring 2 along radial lines, separated from each other by an angle of 360 ° / I Kl, for example 4-6 (Figure 2), are arranged with other ends in the second ring 3 along a common radial line with a deviation from it on the value of not more than the transverse size of the corresponding end of the fiber (figure 3).

The Converter operates as follows.

A light beam whose diameter is less than or equal to the width of the optical input ring of the converter is projected onto the ends of the optical fibers selected as input. The choice of ends as input is determined by the magnitude of the conversion coefficient K. If K 1, then the input ends are the ends arranged in the first ring 2. The light beam is projected onto these ends and introduced into the optical fibers. Due to the property of light guides to transmit radiation in the direction of their longitudinal axes, the light rays pass through the optical fibers, reach opposite: the ends and exit from these ends to the outside. At the same time, since the output ends are

2

five

0

five

0

five

0

45

50

55

The material lines are arranged along the circles in the same or in reverse order as the input ends of the optical fibers; the light beam experiences the same rotational movement at the output of the converter as it does at its input. With the same sequence of input and output ends of the optical fibers (Fig. 1), the direction of rotation of the light beam at the output of the converter coincides with the direction of rotation of the light beam at its input, and during the reverse sequence it changes to the opposite.

For example, the input ends of light guides are arranged in a single layer, and the output - in K layers, i.e. n 1,. Then, when the beam is rotated at the device input by an angle of 360 °, at the device output, it rotates K times by 360 K. Thus, its angular velocity at the device output in K rach is higher than at the input.

Simultaneously with the rotational movement at the output of the device, the light beam also performs translational transitions from one layer to another, as soon as the beam of rays completes a full turn. In the case of a breakdown in the continuity of the rotational movement of the light beam does not occur, since the input highlanders of the optical fibers located along the radial lines separated from each other by an angle of 360 / 1k1 correspond to the output ends of the corresponding optical fibers located along the common radial line (Fig.3 ).

The converter has high reliability due to the absence of rotating optical elements in it, and also has a simple structure and small dimensions with a high input aperture determined by the fibers used.

Claims (2)

1. A fiber-optic angular velocity converter of rotation of the beam of rays containing an optical rotating element, characterized in that, in order to improve and increase reliable converter, the optical rotating element is made in the form of an optical fiber bundle whose fiber optic fibers are assembled at one end into the first ring, and with the other ends into the second ring, and are evenly distributed along them, with the fiber optic fibers located in the first hoist with the corner of m 360 ° step in the second ring size Ґ along the corresponding radius, where K is the conversion factor, and for positive K, the order of the following optical fibers in the second ring is the same tag, and for negative K. is opposed to the order of their following in the first ring. 2. The converter according to Claim 2, in that the optical fibers in the first and second rings are placed respectively in n and m concentric layers, connected by the relation m | K | n, while the fibers of each concentric layer of the first ring are placed equally in IF | concentric layers of the second ring. Editor I. Derbak Compiled by V.Popov Tehred L.Serdyukova Proofreader N.Korol Order 1447 Circulation 476 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 J60 / j 2 Figz Subscription