WO2007082758A2 - Système de vision à effet stroboscopique - Google Patents

Système de vision à effet stroboscopique Download PDF

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Publication number
WO2007082758A2
WO2007082758A2 PCT/EP2007/000458 EP2007000458W WO2007082758A2 WO 2007082758 A2 WO2007082758 A2 WO 2007082758A2 EP 2007000458 W EP2007000458 W EP 2007000458W WO 2007082758 A2 WO2007082758 A2 WO 2007082758A2
Authority
WO
WIPO (PCT)
Prior art keywords
viewing
electrochromic
glasses
control device
darkened
Prior art date
Application number
PCT/EP2007/000458
Other languages
German (de)
English (en)
Other versions
WO2007082758A3 (fr
Inventor
Alexander Von Gencsy
Hans-Peter Becker
Original Assignee
Alexander Von Gencsy
Hans-Peter Becker
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 Alexander Von Gencsy, Hans-Peter Becker filed Critical Alexander Von Gencsy
Priority to EP07702889A priority Critical patent/EP2005197A2/fr
Publication of WO2007082758A2 publication Critical patent/WO2007082758A2/fr
Publication of WO2007082758A3 publication Critical patent/WO2007082758A3/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G02C7/101—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having an electro-optical light valve
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/40—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light using stroboscopic means

Definitions

  • the present invention relates to a viewing system with stroboscopic effect, wherein in a continuous illumination, a stroboscopic effect for the viewer or an image acquisition system is generated by means of an adjustable in their switching time electrochromic viewing unit.
  • Electrochromic translucent units have been known for a long time. Under a fürsichtsei ⁇ heit here is a transparent glass or plastic disc understood, possibly also multi-layered, which is equipped in such a way that under application of a voltage that can be darkened or brightened. Thus, such electrochromic transparent units can be switched by means of suitable circuit devices so that a review is possible or alternatively a darkening and thus no review.
  • suitable circuit devices for the general technical environment of electrochromates, reference is made, by way of example only, to EP 0 886 804, WO 96/003475, EP 0 622 660 or EP 0 735 408.
  • electrochromic see-through units in particular electrochromic glasses
  • electrochromic glasses are their use in so-called automatic welding shields.
  • welding in particular electric welding
  • the welder must follow the welding process to protect his eyesight through a tinted disk, the welding shield.
  • the lens is clear, i. switched transparent.
  • the arc is registered by a photocell and switched by means of subsequent electronic circuit, the sight glass to darkening.
  • the sight glass Upon termination or interruption of the welding process is carried out under the control of said photocell switching back the sight glass on review. So
  • CONFIRMATION SKOPJE For example, under the trade name Speedglas, 3M, USA sells such electrochromic viewing windows, which have switching times of 0.1 milliseconds or less. In this case, the switching time between the state transparent and darkened, or vice versa, is understood as switching time.
  • Stroboscope devices have also been known for a long time. Such devices are particularly useful for monitoring fast-cycling or oscillatory events such as crankshaft rotation or the like.
  • light flashes are generated by means of the stroboscope device which correspond to the frequency or an integral fraction of the frequency of the process to be observed.
  • the frequency of the cyclic process is equal to the frequency of the flashes of light or an integer multiple thereof.
  • a stationary image is faked to the eye of the beholder, which allows a closer look at a selected phase of said cyclic process.
  • valves or switches which operate continuously at high speed are mentioned here.
  • the aforementioned stroboscopic methods have the disadvantage that the methods can be carried out only in a darkened or a sufficiently dark environment.
  • the latter is disadvantageous, in particular when using the stroboscopic method in larger machines or machine components, since the machines to be examined either have to be made in a darkened room or the method can only be used at night.
  • observer in the context of the present description, it includes both a natural observer, such as a human being or technical imaging systems, such as cameras.
  • imaging device includes both the human or animal eye, as well as the range of incidence for light images with downstream image capture devices of a technical imaging system.
  • the input optics of a camera may be mentioned here.
  • the present invention sets out to expose the observer and / or the viewer's imaging device to a darkened environment.
  • the darkened environment can be made in the form of a darkened room, or alternatively by a light-tight goggle or a light-tight helmet for a natural observer. In a technical imaging system this can be done by a light-tight attachment in front of the image acquisition device.
  • the vision system according to the invention has at least one viewing window, wherein the viewing window has electrochromic properties.
  • the lens according to the invention is controlled by means of a control device, wherein under the action of the control device, the lens is alternately switched to transparent or darkened.
  • the frequency of the last-mentioned circuit can optionally be freely set by the operator by means of the control device or optionally by means of further sensors. For the latter, separate comments are made below.
  • the present invention thus goes the way, the stroboscopic method according to the prior art, wherein the object to be examined must be darkened and illuminated with flashes of light to reverse, wherein the observer and / or the image sensing member of the observer is darkened and the examined Object is illuminated in a conventional manner continuously.
  • the stroboscopic effect is achieved by darkening and clear switching of the viewing window with adjustable switching times.
  • Figure 1 shows the display device according to the invention in its embodiment as glasses in clear circuit
  • FIG. 2 shows the sighting device according to the invention according to FIG. 1 in darkness
  • FIG. 3 shows an inventive viewing device according to FIG. 1 with a safety circuit.
  • FIG. 1 shows the sighting device 1 according to the invention in an embodiment as a pair of spectacles, carried by the natural observer 2.
  • the viewing device 1 comprises the electrochromic viewing glasses 3.
  • the sighting glass can be designed as one continuous surface or several individual viewing glasses. In the latter case, in the case of a natural observer, the viewing glasses 3 are assigned to the respective imaging organs 9, which are represented by the eyes in the case of a natural observer.
  • the display device according to the invention comprises a darkening device 4.
  • the darkening device 4 is designed so that it prevents any incidence of light except through the sight glasses 3. In the illustrated embodiment, this is done by the eyeglass frame 5 circumferential screen.
  • the control unit 6 is connected by means of control cable 7 to the control device 10.
  • the control device 10 switches the viewing glasses in the respective states transparent and darkened.
  • the control device 10 includes the necessary components for controlling the sight glasses. 3
  • the frequency of the switching of the sight glasses 3 is controlled by means of control device 6.
  • the operator can input by means of the manual control 8 a frequency for switching the control unit 6, after which the control unit 6 transmits the corresponding control signals to the control device 10.
  • the control device 10 comprises known assemblies, for the respective control of the circuit state of the sight glasses. 3
  • the assemblies of the control device 6 and the control device 10 can be summarized in a suitable manner.
  • control device 6 can be provided with at least one further external sensor and / or transmitter devices.
  • a suitable external sensor is exemplified in the induction gun 11.
  • This embodiment is particularly suitable for the stroboscopic examination of internal combustion engines or other devices with electrical ignition.
  • the ignition pulse is detected with the induction gun 11 and a corresponding signal is output to the control device 6.
  • the control device 6 controls the switching times of the sight glasses 3.
  • the frequency of the circuit of the sight glasses 3 between the switching state transparent and darkened correspond to the frequency which is removed by means of the induction forceps 11.
  • the control of the sight glasses 3 in an integer fraction of the frequency removed with the induction gun 11 frequency is also possible. It is obvious that with the illustrated embodiment stroboscopic examinations of motors or the like are possible in a simple manner.
  • the fundamental frequency of the process to be examined by the external sensor here the induction forceps 11, removed and switched the glasses according to this frequency removed.
  • the observer thus appears as a stationary picture the phase of the cyclic or oscillating process to be examined, which correlates with the input signal of the external sensor.
  • the stationary image of the cyclic or oscillating process generated by means of the sighting device 1 according to the invention can be adjusted stepwise as desired to the phase to be examined.
  • any position of a rotating part such as the crankshaft or an oscillating part, such as a valve can be represented as a still image by means of said phase shift.
  • the control device 6 can be controlled by an external clock signal.
  • FIG. 1 shows a connection device 12 for an external clock signal.
  • the external clock signal gives the control device 6 the basic cycle for activating the sighting device 1.
  • the display device 1 can optionally be switched in the same clock frequency as the external clock signal or in integer fractions thereof.
  • the external clock signal may be phase shifted by the manual control 8 in the aforementioned manner.
  • FIG. 2 shows the sighting device according to the invention according to FIG. 1 with darkened sight glasses 3.
  • the sighting glasses 3 switch in the aforementioned manner between the state darkened and transparent, corresponding to the representations according to FIG. 2 and FIG.
  • Figure 3 shows a safety version of the display device according to the invention in the form of glasses for a natural observer.
  • two viewing glasses are provided in each case, which are assigned to the individual eyes of the observer.
  • one of the lenses is designed according to the invention and switches in the desired frequency between transparent and not transparent to produce the stroboscopic effect.
  • the other glass can optionally be a clear glass.
  • the second sight glass may also be embodied as an electrochromic sight glass 3, which is permanently switched to transparent.
  • the viewing glasses are thus controlled independently of one another by the control device 6.
  • the latter embodiment is particularly advantageous because it can be realized in a simple manner, starting from the main embodiment according to Figure 1 or 2, wherein the individual lenses are switched independently.
  • Said independent circuit wherein one of the sight glasses is switched clocked and the second sight glass is always switched to clear, is also called safety circuit below.
  • the embodiment of a natural observer portable glasses optionally with full stroboscopic operation, ie both Sight glasses are switched clocked, or safety circuit can be operated, is particularly advantageous.
  • the embodiment with safety circuit has the advantage that the observer sees the still image 1 generated by the viewing device 1 only in one eye. At the same time, the moving picture is still seen on the second eye. This avoids that the observer is deceived by the constant consideration of the seemingly stationary process that he is in the vicinity of rotating or moving machine parts. An erroneous reaching or Hineingeraten in the moving machine parts is thereby avoided.
  • FIG. 4 shows a further embodiment of the sighting device 1 according to the invention, in which the observer 2 is designed as an image acquisition system.
  • the display device 1 further comprises the darkening device 4, which prevents a side light incidence between the sight glass 3 and the image sensing member 9 when used as intended.
  • the dimming device 4 is designed as a sleeve, which can be attached thereto by suitable means, such as conventional screw caps, on the image sensing device or suitable devices. It is essential to the invention alone that any lateral incidence of light is avoided. This can be done by appropriate intentions, which are fitted for example in existing for additional lenses glands.
  • the viewing device 1 has the electrochromic viewing glass 3 as described above in the direction of observation. Furthermore, the viewing device in the illustrated embodiment, the driving device 10, for the direct control of the sight glass third
  • the vision system according to the invention also has the control device 6, which is connected to the control cable 7 with the control device 10. Furthermore, the control device 6, the hand control 8 and have other facilities for entering an external Clock signal, represented by the connection device for an external clock signal 12 and / or for receiving an external signal, represented by the induction forceps 11.
  • the sight glass 3 is switched to dark.
  • the viewing device 1 is set, wherein the sight glass 3 is switched to transparent.
  • both the observer 2 and the control device 6 with respectively associated subassemblies have been omitted for reasons of drawing.
  • the circuit of the sight glass 3 to transparent corresponds to the state of the viewing device in which either alternately in time with the dark circuit of the sight glass 3, the observation of the cyclic process takes place or a permanent circuit on transparent, in which the cyclic process without stroboscopic effect can be observed.
  • Another embodiment comprises a stationary viewing system with stroboscopic effect.
  • the dimming device is an accessible space in which the observer can be present. It is understood that the observer is understood to be a natural observer or a technical imaging system.
  • the electrochromic sight glass in this embodiment is mounted in at least one of the outer sides of the room, corresponding to a window.
  • This embodiment is particularly suitable for stationary measuring stations or other facilities in which the movement of large equipment must be continuously monitored. As an example, only engine measuring stands or turbine halls are mentioned here. It is essential to the invention that the lighting conditions are such that the device to be observed is sufficiently exposed to continuous illumination, while the observer is sufficiently darkened. LIST OF REFERENCE NUMBERS

Abstract

L'invention concerne un système de vision à effet stroboscopique comportant au moins une unité de vision par transparence électrochrome (3), une unité d'obscurcissement (4) et un dispositif de commande (6), l'unité d'obscurcissement (4) étant conçue de telle manière que l'organe de détection d'images (9) est obscurci. Le dispositif de commande (6) commute alternativement l'unité de vision par transparence électrochrome (3) à l'état obscurci ou transparent.
PCT/EP2007/000458 2006-01-21 2007-01-19 Système de vision à effet stroboscopique WO2007082758A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07702889A EP2005197A2 (fr) 2006-01-21 2007-01-19 Système de vision à effet stroboscopique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006002948.8 2006-01-21
DE102006002948A DE102006002948A1 (de) 2006-01-21 2006-01-21 Sichtsystem mit Stroboskopeffekt

Publications (2)

Publication Number Publication Date
WO2007082758A2 true WO2007082758A2 (fr) 2007-07-26
WO2007082758A3 WO2007082758A3 (fr) 2007-09-07

Family

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Application Number Title Priority Date Filing Date
PCT/EP2007/000458 WO2007082758A2 (fr) 2006-01-21 2007-01-19 Système de vision à effet stroboscopique

Country Status (3)

Country Link
EP (1) EP2005197A2 (fr)
DE (2) DE102006002948A1 (fr)
WO (1) WO2007082758A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112504637A (zh) * 2020-12-01 2021-03-16 成都新西旺自动化科技有限公司 一种基于机器视觉检测的光源频闪检测系统及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109186962A (zh) * 2018-11-05 2019-01-11 天津大学 一种自动变光焊接护目镜夹持装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887928A (en) * 1955-09-29 1959-05-26 Morgan L Misuraca Binocular stroboscope
FR2132598A1 (fr) * 1971-04-09 1972-11-24 Rouget Jean Claude
FR2391484A1 (fr) * 1977-05-17 1978-12-15 Thomson Csf Dispositif stroboscope et systeme d'observation par stroboscopie comportant un tel dispositif
EP0136085A1 (fr) * 1983-08-26 1985-04-03 Canadian Industrial Innovation Centre Dispositif pour influencer la représentation d'information visuelle
EP0622660A1 (fr) * 1992-04-28 1994-11-02 Saint-Gobain Vitrage International Vitrage électrochrome
WO1996003475A1 (fr) * 1994-07-22 1996-02-08 Gentex Corporation Couche electrochromique et dispositifs comprenant ladite couche
EP0735408A1 (fr) * 1990-12-26 1996-10-02 Ppg Industries, Inc. Dispositif électrochromique à l'état solide
EP0886804B1 (fr) * 1996-03-15 2001-11-21 Ecole Polytechnique Féderale de Lausanne (EPFL) Dispositif electrochrome ou photoelectrochrome

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
IT1246931B (it) * 1991-04-19 1994-11-29 Gd Spa Metodo per il controllo, tramite telecamera, di prodotti incartati con materiale trasparente traslucido.
DE4309353C2 (de) * 1993-03-23 1995-11-09 Deutsche Forsch Luft Raumfahrt Verwendung einer Videokamera und Vorrichtung zur stroboskopischen Aufzeichnung von Vorgängen
DE10033535A1 (de) * 2000-07-11 2002-01-31 Ingbuero Dr Ing Harald Schulz Doppelfassade
DE10241261A1 (de) * 2002-09-06 2004-03-18 Leica Microsystems (Schweiz) Ag Schutzbeleuchtung für Operationsmikroskope

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887928A (en) * 1955-09-29 1959-05-26 Morgan L Misuraca Binocular stroboscope
FR2132598A1 (fr) * 1971-04-09 1972-11-24 Rouget Jean Claude
FR2391484A1 (fr) * 1977-05-17 1978-12-15 Thomson Csf Dispositif stroboscope et systeme d'observation par stroboscopie comportant un tel dispositif
EP0136085A1 (fr) * 1983-08-26 1985-04-03 Canadian Industrial Innovation Centre Dispositif pour influencer la représentation d'information visuelle
EP0735408A1 (fr) * 1990-12-26 1996-10-02 Ppg Industries, Inc. Dispositif électrochromique à l'état solide
EP0622660A1 (fr) * 1992-04-28 1994-11-02 Saint-Gobain Vitrage International Vitrage électrochrome
WO1996003475A1 (fr) * 1994-07-22 1996-02-08 Gentex Corporation Couche electrochromique et dispositifs comprenant ladite couche
EP0886804B1 (fr) * 1996-03-15 2001-11-21 Ecole Polytechnique Féderale de Lausanne (EPFL) Dispositif electrochrome ou photoelectrochrome

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"3M Speedglas Filters and Helmets, A Quick Guide" Januar 2005 (2005-01), 3M , ST. PAUL, MN, USA , XP002441547 Gefunden im Internet: URL:http://multimedia.mmm.com/mws/mediawebserver.dyn?6666660Zjcf6lVs6EVs66SxUsCOrrrrQ-> [gefunden am 2007-07-05] Seite 2, Absatz 1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112504637A (zh) * 2020-12-01 2021-03-16 成都新西旺自动化科技有限公司 一种基于机器视觉检测的光源频闪检测系统及方法
CN112504637B (zh) * 2020-12-01 2022-09-20 成都新西旺自动化科技有限公司 一种基于机器视觉检测的光源频闪检测系统及方法

Also Published As

Publication number Publication date
DE202007019639U1 (de) 2014-10-06
EP2005197A2 (fr) 2008-12-24
WO2007082758A3 (fr) 2007-09-07
DE102006002948A1 (de) 2007-08-02

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