EP2956354A1 - Fenêtre pour un véhicule automoteur, en particulier pour un avion - Google Patents

Fenêtre pour un véhicule automoteur, en particulier pour un avion

Info

Publication number
EP2956354A1
EP2956354A1 EP14717090.6A EP14717090A EP2956354A1 EP 2956354 A1 EP2956354 A1 EP 2956354A1 EP 14717090 A EP14717090 A EP 14717090A EP 2956354 A1 EP2956354 A1 EP 2956354A1
Authority
EP
European Patent Office
Prior art keywords
light
window
lcd panel
laser
photodiode
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP14717090.6A
Other languages
German (de)
English (en)
Inventor
Antonia Scher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2956354A1 publication Critical patent/EP2956354A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
    • B60J3/04—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/14—Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
    • B64C1/1476—Canopies; Windscreens or similar transparent elements
    • B64C1/1484—Windows
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings

Definitions

  • the present invention relates to a window for a
  • Laser attacks are not limited to aviation, but also happen in other traffic areas.
  • the object is achieved by means of a device according to the main claim.
  • the subject of the main claim relates to a window for a motor vehicle, in particular aircraft, with an arranged as anti-glare device LCD panel;
  • Light sensor for detecting a light intensity and / or
  • the invention is thus based on the idea of a
  • the window is used as a windscreen of a motor vehicle, in particular a cockpit of an aircraft.
  • Motor vehicles are understood to be air, water and land vehicles of all kinds.
  • the window continues to know a light sensor, which in
  • the anti-glare device is activated so that at least in an area of the window, a light incidence is reduced or completely prevented.
  • an LCD panel is used as a glare protection device, which is then acted upon by a voltage from the power source when the light sensor to a
  • the LCD panel can then darken as a countermeasure, which is understood as a reduction in its translucency.
  • the window preferably has a polarization filter which cooperates with the LCD panel.
  • the LCD panel darkens automatically very quickly, which can typically take place in 1/25000 s. In a correspondingly rapid manner, a light transmission of the window is restored as soon as no more laser light hits the light sensor.
  • Light sensors is used. These can be arranged, for example, in a matrix. It is further preferred if the at least one light sensor is arranged in the region of the LCD panel, preferably on or in the side of the LCD panel which faces away from the driver. For example, multiple light sensors can be operated in parallel, so that the LCD panel is already darkened when a single light sensor
  • the light sensor is a photodiode.
  • a photodiode is used as a concrete light sensor.
  • Photodiodes are from the state of the art
  • a typical photodiode reacts most effectively at an angle of incidence of the laser light of 0 °, ie at a
  • the light sensor reacts to light wavelengths of 400 nm to 1100 nm.
  • the light sensor responds particularly well to wavelengths that are typical for laser light. In this range are advantageously different
  • Laser colors covered There are also other areas conceivable, for example, from 400 nm to 1200 nm, to a larger
  • the anti-glare device is arranged between two panes.
  • the LCD panel is in one
  • Anti-glare device and the at least one light sensor and / or corresponding tracks between the discs are arranged. This results in a particularly simple and compact structure of the window, which does not affect the statics of the window.
  • the anti-glare device interacts with at least two polarization filters.
  • the LCD panel are two
  • Embodiment is the LCD panel between the two Polarizing filters arranged.
  • the two Polarizing filters arranged.
  • Polarization filter preferably by 90 ° in their
  • Anti-glare device a similar operating principle as that of a welder protection screen, infrared filters and / or heat shields are not required for this purpose.
  • Polarizing filter a particularly effective way to darken and thus protect the driver.
  • the window has a plurality of LCD panels that can darken independently of each other.
  • Antiglare devices are provided, which can make areas of the window opaque. Thus it is possible to darken the window in segments, whereby the rest of the window can still be viewed. This results in a particularly effective protection of the driver while minimizing his visual restriction. To achieve this, it is particularly preferable if each of the
  • Anti-glare devices associated with a single or a group of their own photodiodes are associated with a single or a group of their own photodiodes.
  • Liquid crystals are found in liquid crystal displays (LCD stands for “liquid crystal display”), for example in
  • Liquid crystals consist of long,
  • the interaction between the elongated molecules and electrical voltage is utilized.
  • the interaction depends on whether the electric field of the light wave is oriented along the molecular axis or transversely thereto.
  • the electrons in the molecule can move more easily parallel to the axis. That is why there is another interaction there and accordingly another
  • the glass plates have a directional Coating along which the molecules can align.
  • the glass plates are rotated by 90 ° (with respect to the orientation of their coatings) against each other, thereby turning the orientation of the molecules. This is called the TN cell (T for "twisted” 4 - twisted and N for "nematic" 10 - threadlike). Outside are on the glass panes
  • Polarizing filters 2, 6; 8, 12 attached which were also rotated by 90 °.
  • the first polarization filter passes only one plane of oscillation of the light, which is oriented parallel to the molecules.
  • the twisted molecules have the property of interacting with the light by rotating the plane of vibration of the light so that the light above has rotated its polarization by 90 °.
  • it can also be the upper filter
  • Electrons emit waves again and produce the
  • This helmet darkens the welder's screen during welding by itself within a 25000stel
  • the helmet can therefore remain in front of the face during the entire welding process.
  • Welding helmet Through them, the welder sees through during the welding process. It contains liquid crystals, which ensure that the disc during the welding process becomes dark and thus ensures the protection of the eyes against the bright light.
  • the disk is controlled by light-sensitive sensors (photodiodes). 5.2 parts
  • Trial 3 Protective screen, cable, power source, tripod material, photodiodes, laser
  • Welder's helmet is loud in connection with a laser
  • Welding helmet device can be brought by me to darken. For that I have the disc from the original one
  • the welding helmet disk is connected to a circuit. I want to find out if I can use the disk with the help of
  • the greenish disk passes the laser light when no voltage is present.
  • the disc darkens permanently when the voltage is applied, and the laser can then no longer shine through.
  • the disk is part of a circuit in which there is also a photodiode.
  • the resistance in the photodiode drops abruptly as soon as laser light falls on the photodiode and the window would have to darken.
  • the disk When I turn on the power, the disk remains transparent. But as soon as the laser light falls on the photodiode, the disc darkens. Result
  • the disc now darkens through the laser light.
  • the photodiode (s) would have to be on the disk (V3), as is aimed at the glare of pilots on the discs.
  • the anti-glare device 16 is part of a circuit with a high resistance.
  • photodiodes 18 In front of the LCD panel photodiodes 18 are placed, which in the unlit state the high resistance to have. The resistance drops as soon as laser light is on
  • I turn on the power to a power source 26 (2V) and apply the laser light to one of the photodiodes 18 in front of the
  • the anti-glare device 16 When I turn on the power, the anti-glare device 16 remains transparent. But as soon as the laser light on one of the
  • Photodiodes 18 falls, darkens the anti-glare device 16.
  • the anti-glare device 16 now darkens when laser light is placed on it or on the front of it
  • the wavelength of the laser light I have not studied the direct relationship between the wavelength and the response of the photodiode. I relied on the device information. 8.4 The color of the laser light
  • This type of diode has its highest sensitivity at a wavelength of about 850 nm
  • Laser pointer has a wavelength of 532 nm ⁇ 10, so is not optimally matched to this type of diode.
  • This type of diode has its largest according to FIG.
  • the wavelength is 532 nm ⁇ 10. It has an output power of 100 mW and thus corresponds to laser class 3b.
  • safety regulations must be observed. In particular, the direct view into the laser beam or its reflection is to be avoided.
  • FIG. 1 shows a schematic representation of an LCD panel in a first operating state
  • FIG. 2 shows a schematic representation of an LCD panel in a second operating state
  • Figure 3 shows an embodiment of a module for
  • FIG. 4 shows an arrangement of a multiplicity of modules from FIG. 3,
  • FIG. 5 shows a window with the arrangement from FIG. 4,
  • FIG. 6 is a first diagram of an exemplary photodiode
  • FIG. 7 shows a second diagram of an exemplary photodiode.
  • FIG. 1 shows a schematic representation of a structure of an LCD panel in a first operating state in which the LCD panel is translucent. This operating state is also referred to as the operating state "bright.”
  • the LCD panel is behind a pane in the form of a protective glass 1 and between a first polarizing filter 2 and a second
  • Polarizing filter 6 is arranged. It has a first
  • Liquid crystal 4 is arranged.
  • the representation symbolizes the molecular orientation of the liquid crystal 4. As shown here, this is twisted, so “twistet”.
  • Polarizing filters 2 and 6 are in their
  • Polarization direction rotated by 90 ° to each other.
  • Polarization filter 6 out. Due to the changed polarization of the light, it allows all polarized light to pass through.
  • FIG 2 shows a schematic representation of a structure of an LCD panel in a second operating state in which the LCD panel is darkened, that is opaque, is.
  • This operating state is also referred to as "dark" operating state
  • the LCD panel is behind a pane in the form of a protective glass 7 and between a first
  • Polarization filter 8 and a second polarizing filter 12 is arranged. It has a first glass plate 9 and a second glass plate 11. Liquid crystal 10 is disposed between the first glass plate 9 and the second glass plate 11. The Representation symbolizes the molecular orientation of the
  • the polarizing filters 8 and 12 are rotated in their polarization direction by 90 ° to each other.
  • Polarization filter 12 out. It blocks all polarized light due to the unchanged polarization of the light.
  • like reference numerals are used to avoid unnecessary repetitions for like assemblies.
  • FIG. 3 shows a module 14 that can serve for glare protection.
  • the module 14 has an LCD panel 16 on which nine
  • Photodiodes 18 are arranged like a matrix.
  • the LCD panel 16 operates with two
  • Polarization filters together, as described with reference to Figures 1 and 2.
  • the photodiodes 18 are connected to a first power line 20.
  • the LCD panel 16 is electrotechnical with a supply line 22
  • the photodiodes 18 are also connected via a line 24 to the LCD panel 16.
  • the supply line 22 and the power line 20 are further connected to different poles of a power source 26.
  • the photodiodes 18 serve as switching elements, which then close a circuit between the power source 26 and the LCD panel 16 when light falls on them.
  • the LCD panel 16 is supplied with sufficient electrical voltage, to completely change its state of translucency, regardless of which or how many of the photodiodes 18 close the circuit.
  • the modular structure offers the possibility of arranging the photodiodes 18 in the area of the LCD panel 16. It is particularly preferred if the photodiodes 18 are held by the LCD panel 16.
  • FIG 4 shows a module assembly 28 of five modules 14.
  • the module assembly 28 illustrates the advantage of the compact design of the module 14 of Figure 3.
  • a common power source 26 ⁇ for all modules 14 use. This ensures that the window can be constructed very compact and modular in total by saving energy sources 26.
  • FIG. 5 shows a window 30 with the module arrangement 28 from FIG. 4. It becomes clear that a module-like darkening of the window 30 is possible. The independence of the individual
  • Module 14 within the module assembly 28 from each other thus leads to a protection of the driver, while unaffected areas of the window 30 remain transparent.
  • Only one module arrangement 28 is shown by way of example in FIG. In
  • preferred embodiments are further parts of the window 30 or the entire window 30 with modules 14,
  • FIG. 6 shows a diagram in the form of a Cartesian
  • FIG. 7 shows a two-part diagram.
  • the first part is arranged in the right area and also represents a Cartesian coordinate system. It has an abscissa with respect to an incident angle of light on the photodiode in [degree].
  • the coordinate system knows one
  • Characteristics of the exemplary photodiode describes. It can be seen clearly from this curve that the photodiode has its highest sensitivity at an angle of incidence of 0 ° and a very good sensitivity between 0 and 20 °.
  • the second part is arranged in the left area and represents the same information as the first part, whereby the representation in polar coordinates to the clarification of the

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne une fenêtre (30) pour un véhicule automoteur, en particulier pour un avion, qui est soumise à un faisceau laser. Pour protéger le pilote, la fenêtre (30) comporte : un dispositif anti-éblouissement sous la forme d'un panneau LCD, un détecteur de lumière pour appréhender une intensité et/ou une fréquence de lumière à l'extérieur du véhicule automoteur, une source d'énergie pour faire fonctionner le dispositif anti-éblouissement. Une transparence à la lumière du dispositif anti-éblouissement est commandable selon l'invention en fonction de l'intensité et/ou de la fréquence de la lumière.
EP14717090.6A 2013-02-13 2014-02-08 Fenêtre pour un véhicule automoteur, en particulier pour un avion Withdrawn EP2956354A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013002385.8A DE102013002385A1 (de) 2013-02-13 2013-02-13 Fenster für ein Kraftfahrzeug, insbesondere Flugzeug
PCT/DE2014/000044 WO2014124622A1 (fr) 2013-02-13 2014-02-08 Fenêtre pour un véhicule automoteur, en particulier pour un avion

Publications (1)

Publication Number Publication Date
EP2956354A1 true EP2956354A1 (fr) 2015-12-23

Family

ID=50483341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14717090.6A Withdrawn EP2956354A1 (fr) 2013-02-13 2014-02-08 Fenêtre pour un véhicule automoteur, en particulier pour un avion

Country Status (3)

Country Link
EP (1) EP2956354A1 (fr)
DE (2) DE102013002385A1 (fr)
WO (1) WO2014124622A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105443021A (zh) * 2015-12-19 2016-03-30 成都克雷斯达科技有限公司 一种卷帘门用智能控制系统
DE102016204082A1 (de) * 2016-03-11 2017-09-14 Pr Germany Gmbh Sicherungssystem mit einer transparenten Scheibeneinrichtung
GB201604994D0 (en) * 2016-03-24 2016-05-11 Bae Systems Plc Filter
US10926859B2 (en) 2018-03-09 2021-02-23 International Business Machines Corporation Smart window activation to prevent laser disturbance
DE102021125960B4 (de) 2021-10-06 2023-04-27 Diehl Aerospace Gmbh Beleuchtung für ein Fenster eines Flugzeuges

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330817C1 (de) * 1993-09-13 1994-12-01 Optrel Ag Verfahren zur Steuerung einer Blendschutzeinrichtung und Blendschutzeinrichtung zur Durchführung des Verfahrens
DE19714434A1 (de) 1997-04-08 1998-10-15 Armin Schaeuble Selektive elektronische Lichtschutzbrille
WO2006073408A2 (fr) 2005-01-07 2006-07-13 Harvie Mark R Systeme de protection laser actif
US7355161B2 (en) * 2005-12-15 2008-04-08 The Boeing Company Systems and methods for controlling windows with variable light transmission
DE102010054131A1 (de) * 2010-12-10 2012-06-14 Rheinmetall Waffe Munition Gmbh Passiver Eigenschutz für Fahrzeuge, insbesondere für Flugobjekte, und Objekte mit wenigstens einem Fenster

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014124622A1 *

Also Published As

Publication number Publication date
WO2014124622A1 (fr) 2014-08-21
DE102013002385A1 (de) 2014-08-14
DE202014001058U1 (de) 2014-05-19

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