WO2009012787A1 - Electrically charged light guide which is movable with the aid of surrounding electrodes - Google Patents

Electrically charged light guide which is movable with the aid of surrounding electrodes Download PDF

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Publication number
WO2009012787A1
WO2009012787A1 PCT/EE2008/000013 EE2008000013W WO2009012787A1 WO 2009012787 A1 WO2009012787 A1 WO 2009012787A1 EE 2008000013 W EE2008000013 W EE 2008000013W WO 2009012787 A1 WO2009012787 A1 WO 2009012787A1
Authority
WO
WIPO (PCT)
Prior art keywords
light guide
light flux
light
electrodes
guiding
Prior art date
Application number
PCT/EE2008/000013
Other languages
French (fr)
Inventor
Aleksander Krimanov
Igor Sominski
Original Assignee
Oü Somins Studio Lux
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oü Somins Studio Lux filed Critical Oü Somins Studio Lux
Publication of WO2009012787A1 publication Critical patent/WO2009012787A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/101—Scanning systems with both horizontal and vertical deflecting means, e.g. raster or XY scanners
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
    • G02B6/3568—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details characterised by the actuating force
    • G02B6/357—Electrostatic force
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/3502—Optical coupling means having switching means involving direct waveguide displacement, e.g. cantilever type waveguide displacement involving waveguide bending, or displacing an interposed waveguide between stationary waveguides

Definitions

  • the device and the method for guiding the light flux belong to the domain of optical communications.
  • the known methods for guiding the light flux are based on the modulation of the light flux, guiding the modulated light flux and detecting back into the light flux.
  • a deflection yoke containing horizontal and vertical electrode plates and a deflection yoke control system is used for guiding the modulated light flux.
  • the above mentioned device is used, for example, for displaying images, for communication or other purposes, inter alia, for example in iconoscopes, kinescopes, oscillographs, electron-optical converters, electronic commutators (F ⁇ sika X-XI klassile.Tln., 1982.1k. 122-123).
  • the voltage obtained from the electrodes enables to rotate the micromirror from one extreme position to another, corresponding to connected or disconnected states.
  • the light will be directed from the micromirror into the optical system, while in the second case the light will be diffused and reflected back (Paat R. Laserkuvar.Bakalaureuseto ⁇ . Tartu Ulikool, 2002).
  • the known devices comprising light flux and light guide, where the light flux is directed to the target spot manually or mechanically by introducing the end of the light guide fixed to the device and the light flux to the desired spot.
  • the known devices are, for example, a laser scalpel, a laser fescue, a pencil-shaped laser device used in dentistry, a laser welding device, a laser cutter.
  • the aim of this invention is guiding the light flux in the electric field via directed movement of electrically loaded light guide carrying the light flux, at the same time ensuring direction of the light flux to a certain point or certain points, or reception of the light flux from a certain point or certain points.
  • the method for guiding the light flux consists of the following processes: guiding the light flux to the light guide, which have the properties of an electrically loaded body, influencing the electrically loaded light guide carrying the light flux with the electric field, directed spatial movement of the electrically loaded light guide carrying the light flux caused by the electric field together with the directed spatial movement of the light flux.
  • the light flux guiding device intended for the realization of the above mentioned method comprises a light guide, which is or can be electrically charged.
  • the light guide can be made of dielectric material or have metallised surface.
  • the light guide made of dielectric material
  • the light guide is coated with an electric charge carrier, for example coating material with electret properties or the light guide itself is made of material with electret properties.
  • the device for guiding the light flux comprises a source of electric charge connected to the light guide to charge the light guide electrically.
  • the electrically charged light guide is placed into the field of action of electrodes in the way to assure the moving of the light guide in the space between the electrodes without touching them.
  • the share of the light guide subject to the movement in the field of action between electrodes depends on the purpose of the device for guiding the light flux.
  • the electrodes are connected to electric voltage impulse generators.
  • the electrodes are charged with impulses coming from the impulse generators according to the instructions controlling the light flux.
  • One or several electrodes may be used depending on the purpose of the device for guiding the light flux. For example, one electrode is sufficient for a device used for reading bar codes.
  • the functioning of the device for guiding the light flux does not depend whether the light guide is having DC voltage or AC voltage. It is essential to follow that in the case of the light guide having DC voltage the electrodes must have AC voltage and vice versa.
  • the light flux is transferred via the light guide, which is optical fibre having electret properties, or optical fibre with metallised surface, electrically charged nanotube or other electrically charged light flux carrier.
  • the device for guiding the light flux comprises a source of electric charge connected to the light guide to charge the light guide electrically.
  • the light flux may enter or exit via the face-plates of the light guide.
  • the device and the method for guiding the light flux enable to introduce accurate, rapid, inexpensive, small, light and simple-structured devices in the field of optical communications.
  • FIGURES The figure 1 (Fig. 1) depicts the principal diagram of the device for guiding the light flux.
  • the device for guiding the light flux (Fig. 1, Fig. 2), which comprises the metallised light guide 1 with DC voltage, guiding the light flux 2 and also serving as the electric charge carrier; the electrodes 3A, 3a, 3B, 3b, which are located so that the light guide 1 will not touch the electrodes 3A, 3a, 3B, 3b, and the light guide 1 will have enough room for moving in the space between the electrodes, where the light guide 1 is optical fibre with metallised surface, electrically charged nanotube or nanotube with electrically charged coating; the fastener 4 for fixing the light guide 1; the movement field 5, which determines the range of movement of the face-plate 6 A of the light guide 1 so that avoids the contact of the light guide 1 with the electrodes 3 A, 3a, 3B, 3b while moving in the space between the electrodes.
  • the electrodes 3 A, 3a, 3B, 3b are connected to the electrode guidance system.
  • the device for guiding the light flux depicted on the Fig. 1 and the Fig. 2 functions as follows: DC voltage is generated on the light guide 1 by a DC voltage source as a response to control signal.
  • the light flux 2 enters the light guide 1 through the face-plate 6a of the light guide 1 and carries along the light guide 1 by the means of internal reflection and exits through the faceplate 6A.
  • the light guide 1 with DC voltage carrying the light flux 2 is inserted to the field of action of the electrodes 3 A, 3a, 3B, 3b without touching the electrodes 3A, 3a, 3B, 3b, and leaving enough room for the light guide 1 for moving in the space between the electrodes. If the light guide 1 or the electric charge carrier 5 of the light guide 1 has positive charge, the electrode 3 A is charged with a positive impulse from the AC source and the electrode 3a is charged with a negative impulse from the AC source. As a result, an electric field directed from the electrode 3A to the electrode 3a is formed between the electrodes 3A and 3a.
  • the light guide 1 with DC voltage carrying the light flux 2 is subject to the force directed towards the electrode 3a and moves together with the light flux 2 towards the electrode 3a.
  • the light guide 1 is charged positively (Fig. 1, Fig. 2) and the electrode 3B is charged with a positive impulse from the AC source, and the electrode 3b is charged with a negative impulse from the AC source, the electric field is formed between the electrodes 3B and 3b directed from the electrode 3B to the electrode 3b, and the light guide 1 carrying the light flux 2 is subject to the force directed from the electrode 3B to the electrode 3b, and the light guide 1 carrying the light flux 2 moves towards the electrode 3b.
  • the voltage given from the AC source to the electrodes 3 A, 3a, 3B, 3b must be in opposite phase compared to the voltage in the neutral conductor.
  • the length of the light guide 1 subject to movement depends on the intended purpose of the device for guiding the light flux.
  • the device for guiding the light flux can be used without the fastener 4 also. Usage of the fastener 4 for the light guide 1 depends on the intended purpose of the device for guiding the light flux.
  • the light guide 1 made of dielectric material or material having electret properties is used as the electric charge carrier.
  • the light guide 1 or its coating material is pre-charged with electric charges of uniform polarity, and there is no need to connect the light guide 1 to a DC voltage source.

Abstract

The device for guiding the light flux comprises the electrically charged light guide 1 carrying the light flux 2 and accordingly charged electrodes 3A, 3a, 3B, 3b, the positions of which guarantee enough room for the movement of the electrically charged light guide 1 guaranteeing the movement of the end 6A of the electically charged light guide 1 in its field of movement 5. The method for guiding the light flux, which is the basis for the abovementioned device, contains the guiding of the electrically charged light guide carrying the light flux with the help of electrodes surrounding the electrically charged light guide.

Description

ELECTRICALLY CHARGED LIGHT GUIDE WHICH IS MOVABLE WITH THE AID OF SURROUNDING ELECTRODES
TECHNICAL FIELD OF THE INVENTION
The device and the method for guiding the light flux belong to the domain of optical communications.
STATE OF THE ART
The known methods for guiding the light flux are based on the modulation of the light flux, guiding the modulated light flux and detecting back into the light flux.
There is a known electrical vacuum device in which a deflection yoke containing horizontal and vertical electrode plates and a deflection yoke control system is used for guiding the modulated light flux. The above mentioned device is used, for example, for displaying images, for communication or other purposes, inter alia, for example in iconoscopes, kinescopes, oscillographs, electron-optical converters, electronic commutators (Fϋϋsika X-XI klassile.Tln., 1982.1k. 122-123).
There is a known device, where the light flux in the light guide is modulated by applying appropriate voltage to a pair of vertical electrodes and to a pair of horizontal electrodes fixed on the consolidating surface of the light guide (JP 1219716 A (SUGANUMA TATSUJI 01.09.1989). There is a known device for guiding the light flux, containing a combined light-dividing prism, which separates primary colour components from the light flux and directs them into respective colour channels. A colour channel consists of approximately 2 million micromirrors, and when rotated, each of them forms an image dot onto the corresponding screen area. Each of the micromirrors is supplied with a pair of electrodes. The voltage obtained from the electrodes enables to rotate the micromirror from one extreme position to another, corresponding to connected or disconnected states. In the first case, the light will be directed from the micromirror into the optical system, while in the second case the light will be diffused and reflected back (Paat R. Laserkuvar.Bakalaureusetoδ. Tartu Ulikool, 2002).
There are known devices comprising light flux and light guide, where the light flux is directed to the target spot manually or mechanically by introducing the end of the light guide fixed to the device and the light flux to the desired spot. The known devices are, for example, a laser scalpel, a laser fescue, a pencil-shaped laser device used in dentistry, a laser welding device, a laser cutter.
The disadvantage of known solutions is that modulated light flux, complex system of mirrors, or manual or mechanical moving of the light guide carrying the light flux should be used for guiding the light flux.
SUBJECT MATTER OF THE INVENTION
The aim of this invention is guiding the light flux in the electric field via directed movement of electrically loaded light guide carrying the light flux, at the same time ensuring direction of the light flux to a certain point or certain points, or reception of the light flux from a certain point or certain points. The method for guiding the light flux consists of the following processes: guiding the light flux to the light guide, which have the properties of an electrically loaded body, influencing the electrically loaded light guide carrying the light flux with the electric field, directed spatial movement of the electrically loaded light guide carrying the light flux caused by the electric field together with the directed spatial movement of the light flux.
The light flux guiding device intended for the realization of the above mentioned method comprises a light guide, which is or can be electrically charged. The light guide can be made of dielectric material or have metallised surface.
In the case of the light guide made of dielectric material the light guide is coated with an electric charge carrier, for example coating material with electret properties or the light guide itself is made of material with electret properties.
In the case of the light guide with metallised surface the device for guiding the light flux comprises a source of electric charge connected to the light guide to charge the light guide electrically.
The electrically charged light guide is placed into the field of action of electrodes in the way to assure the moving of the light guide in the space between the electrodes without touching them.
The share of the light guide subject to the movement in the field of action between electrodes depends on the purpose of the device for guiding the light flux. The electrodes are connected to electric voltage impulse generators. The electrodes are charged with impulses coming from the impulse generators according to the instructions controlling the light flux.
One or several electrodes may be used depending on the purpose of the device for guiding the light flux. For example, one electrode is sufficient for a device used for reading bar codes.
The functioning of the device for guiding the light flux does not depend whether the light guide is having DC voltage or AC voltage. It is essential to follow that in the case of the light guide having DC voltage the electrodes must have AC voltage and vice versa.
In the device for guiding the light flux, the light flux is transferred via the light guide, which is optical fibre having electret properties, or optical fibre with metallised surface, electrically charged nanotube or other electrically charged light flux carrier.
In the case of the light guide with metallised surface the device for guiding the light flux comprises a source of electric charge connected to the light guide to charge the light guide electrically.
Depending on the purpose of the device for guiding the light flux, the light flux may enter or exit via the face-plates of the light guide.
The device and the method for guiding the light flux enable to introduce accurate, rapid, inexpensive, small, light and simple-structured devices in the field of optical communications.
FIGURES The figure 1 (Fig. 1) depicts the principal diagram of the device for guiding the light flux. The figure 2 (Fig. 2) depicts the principal diagram of the cross- section A-A of the device for guiding the light flux.
EXAMPLE OF EXECUTING THE INVENTION
The device for guiding the light flux (Fig. 1, Fig. 2), which comprises the metallised light guide 1 with DC voltage, guiding the light flux 2 and also serving as the electric charge carrier; the electrodes 3A, 3a, 3B, 3b, which are located so that the light guide 1 will not touch the electrodes 3A, 3a, 3B, 3b, and the light guide 1 will have enough room for moving in the space between the electrodes, where the light guide 1 is optical fibre with metallised surface, electrically charged nanotube or nanotube with electrically charged coating; the fastener 4 for fixing the light guide 1; the movement field 5, which determines the range of movement of the face-plate 6 A of the light guide 1 so that avoids the contact of the light guide 1 with the electrodes 3 A, 3a, 3B, 3b while moving in the space between the electrodes. The electrodes 3 A, 3a, 3B, 3b are connected to the electrode guidance system.
The device for guiding the light flux depicted on the Fig. 1 and the Fig. 2 functions as follows: DC voltage is generated on the light guide 1 by a DC voltage source as a response to control signal. The light flux 2 enters the light guide 1 through the face-plate 6a of the light guide 1 and carries along the light guide 1 by the means of internal reflection and exits through the faceplate 6A.
To guide the light flux 2, the light guide 1 with DC voltage carrying the light flux 2 is inserted to the field of action of the electrodes 3 A, 3a, 3B, 3b without touching the electrodes 3A, 3a, 3B, 3b, and leaving enough room for the light guide 1 for moving in the space between the electrodes. If the light guide 1 or the electric charge carrier 5 of the light guide 1 has positive charge, the electrode 3 A is charged with a positive impulse from the AC source and the electrode 3a is charged with a negative impulse from the AC source. As a result, an electric field directed from the electrode 3A to the electrode 3a is formed between the electrodes 3A and 3a. The light guide 1 with DC voltage carrying the light flux 2 is subject to the force directed towards the electrode 3a and moves together with the light flux 2 towards the electrode 3a.
If the light guide 1 is charged positively (Fig. 1, Fig. 2) and the electrode 3B is charged with a positive impulse from the AC source, and the electrode 3b is charged with a negative impulse from the AC source, the electric field is formed between the electrodes 3B and 3b directed from the electrode 3B to the electrode 3b, and the light guide 1 carrying the light flux 2 is subject to the force directed from the electrode 3B to the electrode 3b, and the light guide 1 carrying the light flux 2 moves towards the electrode 3b.
To ensure proper working of the device for guiding the light flux, the voltage given from the AC source to the electrodes 3 A, 3a, 3B, 3b must be in opposite phase compared to the voltage in the neutral conductor.
It can be seen from the Fig. 1 that the part of the light guide 1, which is located between the face-plate 6A of the light guide and the fastener 4, is subject to movement.
The length of the light guide 1 subject to movement depends on the intended purpose of the device for guiding the light flux. The device for guiding the light flux can be used without the fastener 4 also. Usage of the fastener 4 for the light guide 1 depends on the intended purpose of the device for guiding the light flux.
Depending on the intended purpose of the device for guiding the light flux, the light guide 1 made of dielectric material or material having electret properties is used as the electric charge carrier. In these cases the light guide 1 or its coating material is pre-charged with electric charges of uniform polarity, and there is no need to connect the light guide 1 to a DC voltage source.

Claims

PATENT CLAIMS
1. The device for guiding the light flux that comprises the light guide (1) carrying the light flux (2) and electrodes (3), which differs in that it comprises the electrically charged coating of the light guide (1) or the electrically charged light guide (1); the positioning of the electrodes (3 A, 3a, 3B, 3b), which ensures that the light guide (1) will not touch the electrodes (3 A, 3a, 3B, 3b), and the light guide (1) will have enough space to move between the electrodes (3 A, 3 a, 3B, 3b) to enable the movement of the faceplate (6A) of the light guide (1) in the movement field (5).
2. The device for guiding the light flux according to claim 1, which differs in that the light guide (1) is optical fibre having electret properties or optical fibre with metallised surface, electrically charged nanotube or some other electrically charged light flux carrier.
3. The method for guiding the light flux, which lies in the guiding of the light flux into the light guide, carrying of the light flux in the light guide, exiting the light flux from the light guide, and controlling the directed movement of the light flux, which differs in that it comprises the electrical charging of the light guide; positioning the electrically charged light guide or its end in the space between electrodes so that the electrically charged light guide avoids contact with the electrodes; appropriate charging of the electrodes to ensure the directed movement of the light guide in the electric field, together with the directed movement of the face-plate of the light guide in its movement field, resulting in directing the light flux onto, or receiving from a certain point.
PCT/EE2008/000013 2007-07-25 2008-05-27 Electrically charged light guide which is movable with the aid of surrounding electrodes WO2009012787A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EEP200700040A EE200700040A (en) 2007-07-25 2007-07-25 Apparatus and method for controlling the flux
EEP200700040 2007-07-25

Publications (1)

Publication Number Publication Date
WO2009012787A1 true WO2009012787A1 (en) 2009-01-29

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ID=39709346

Family Applications (1)

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PCT/EE2008/000013 WO2009012787A1 (en) 2007-07-25 2008-05-27 Electrically charged light guide which is movable with the aid of surrounding electrodes

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WO (1) WO2009012787A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470320A (en) * 1962-09-13 1969-09-30 Ibm Fibre deflection means
US4234788A (en) * 1979-04-06 1980-11-18 General Dynamics Corporation, Pomona Division Electrostatic fiber optic scanning device
EP0283256A2 (en) * 1987-03-18 1988-09-21 Tektronix Inc. Scanning optical microscope
US5727098A (en) * 1994-09-07 1998-03-10 Jacobson; Joseph M. Oscillating fiber optic display and imager

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470320A (en) * 1962-09-13 1969-09-30 Ibm Fibre deflection means
US4234788A (en) * 1979-04-06 1980-11-18 General Dynamics Corporation, Pomona Division Electrostatic fiber optic scanning device
EP0283256A2 (en) * 1987-03-18 1988-09-21 Tektronix Inc. Scanning optical microscope
US5727098A (en) * 1994-09-07 1998-03-10 Jacobson; Joseph M. Oscillating fiber optic display and imager

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Publication number Publication date
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