SU1668977A1 - Optoelectrnic data input device - Google Patents

Abstract

The invention can be used to manually enter information in telegraphy, automation, computing, information transfer systems. The purpose of the invention is to increase the reliability of the device and expand the scope by introducing information into the fiber-optic data transmission lines. When pressing on any of the key heads 4, the stems of the 5 keys block the orthogonal light guide channels of the X and Y directions of the housing 2. Due to this, the luminous flux from the sources of light 1 of the X and Y directions is partially absorbed by the light guide rods 5, illuminating the digitized surface, partially reflected from bevels 6 rods at a certain angle and through the slots 9 of the body falls on the taps 10 of the input of the luminous flux in the strip fibers. Then, the light flux through the optical fiber 11 reaches the coupler 10 for outputting the light fluxes of the X and Y directions, is collected by the prism and hits the photosensitive elements of the X and Y directions. Since the signal is recorded in two directions simultaneously, any key is recognized. 4 il.

Description

The invention relates to computer technology, automation, and can be used to manually enter information in telegraphy, instrument engineering, in information transmission systems, in planar integrated optical modules.

The purpose of the invention is to increase the reliability of the device and to expand the scope by introducing information into the fiber-optic transmission lines.

FIG. 1 shows the design of an optoelectronic device for inputting information; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 keys.

An optoelectronic device for inputting information contains sources of light 1, a keyboard case 2, rectangular recesses in the case — orthogonal light guide channels 3, key heads 4 with rods 5, having angular bevels 6, which partially reflect, partially absorb light and are made at a certain angle , spring 7 return, front panel 8 of the keyboard housing, slits 9 in the housing, taps 10 in the form of a comb-type diffraction grating for introducing luminous flux into the optical fibers 11, made orthogonal to the light guide along spoon, which is applied to the base 13, light receivers 14, consisting of luminous flux couplers 15 from a light guide 11, a prism 16, a light-sensitive element 17, fiber-optic data transmission lines 18, digitized surface 19 of the key head , an opaque gasket 20, insulating the light guide rods of the keys. The diffraction grating lines of the couplers 10 are deposited on the optical fibers 11 and transferred to the optical fiber optical transmission line 18.

The device works as follows.

When pressing any of the keyboard heads 4, the rods 5 block the light guides of the channel 3 of the housing 2. As a result, the luminous flux from sources 1 of the X and Y direction light is partially absorbed by the light guide rods 5 and illuminates the digitized surface 19, is partially reflected from the bevel 6 at a certain angle and through the slots 9 of the panel 8 enters the couplers 10 of the input of the Luminous flux, the strip light guides 11 and through the taps 15 of the output of the luminous flux to the prisms 16 and the light-sensitive elements 17 of the X and Y directions. Since the signal is registered Left in two directions at the same time, any key is recognized. A portion of the luminous flux is supplied to the fiber optic line 18 for transmitting information for further processing in integrated optics devices or for transmitting information to a communication line.

In the light guide channels 3, additional light-sensitive elements can be installed on the side opposite to the light sources 1, and recognition of the pressed keys can be performed by interrupting the light flux; in this case, these light-sensitive elements are useful for additional control and stabilization of parameters.

The design has a higher reliability, as it allows you to visually control the input of information, has no optical joints, and therefore is more vibration resistant, has higher mechanical strength, lighter weight, more processability due to the use of planar technology and integrated optics than the expansion of functional opportunities.

Claims (1)

Invention Formula An optoelectronic device for inputting information, comprising a housing in which light guide channels are made, light sources and receivers, keys, each of which contains key heads with rods and return springs located in the slots of the front panel of the housing at the intersections of light guide channels optically connected with light sources located on two adjacent sides of the body, characterized in that, in order to increase the reliability of the device and expand the field of application by entering information into the fiber -optical information transmission lines, the device contains couplers made in the form of a comb-type diffraction grating with a comb pitch, a multiple of L. wavelength of incident light, a base with a light-conducting substrate printed on it, slots coaxial with the front panel slots are made on the body, The rods of the keyboard heads are made transparent with bevels, the normal to which is oriented at an angle to the optical axes of the light sources and the diffraction grating of a comb-like fiber located on the light guide the comb-type diffraction grating is located on optical fibers whose intersection axes are coaxial with the intersection axes of the light guide channels, the receivers are located on the light-conducting substrate and are in the form of sequentially installed taps, a comb-shaped prism and a photosensitive element, respectively Fig.Z .19 -20 WIGL