WO2005000112A1 - Vorrichtung und verfahren zur bestimmung der fehlsichtigkeit eines optischen systems - Google Patents
Vorrichtung und verfahren zur bestimmung der fehlsichtigkeit eines optischen systems Download PDFInfo
- Publication number
- WO2005000112A1 WO2005000112A1 PCT/EP2004/006918 EP2004006918W WO2005000112A1 WO 2005000112 A1 WO2005000112 A1 WO 2005000112A1 EP 2004006918 W EP2004006918 W EP 2004006918W WO 2005000112 A1 WO2005000112 A1 WO 2005000112A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical element
- controllable
- optical system
- ametropia
- measuring
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
Definitions
- the present invention relates to a device and a device for determining the ametropia of an optical system.
- ametropia of the human eye e.g. to be subjectively determined by the patient through lens arrangements upstream in the beam path of the eye.
- the correction of myopia, hyperopia and astigmatism can e.g. take place by the doctor offering the patient lenses in a spectacle frame, the patient being able to subjectively correct the correction of his ametropia using an eye chart. Instead of using different lenses with trial glasses, this can also be done with a phoropter.
- an objective measurement is usually first carried out using an automatic refractometer or aberrometer, which is then subjectively confirmed or corrected. This generally requires two work steps, which can be associated with a change of location between the doctor and the patient.
- a disadvantage of known devices and methods is that the objective determination of correction values and the subjective determination or correction of the objective measurement values take place in different work steps and sometimes also lead to significantly different results.
- the present invention is therefore based on the object of specifying a device and a method in which the objective and the subjective determination of the correction values are more closely combined.
- a device for determining the ametropia of an optical system comprising a controllable optical element which is controlled by a measuring and control device and whose optical properties can be changed automatically and / or manually.
- the optical system can be the human eye itself, but it can also be a human eye, for example has been supplemented by means of a contact lens, at least one intraocular lens, glasses, a combination of these elements or the like.
- the measuring and control device preferably comprises an automatic refractometer or aberrometer and an electronic circuit for controlling the controllable optical element.
- the controllable optical element can preferably be an electrically controllable phoropter, or else a lens or mirror system, for example an optometer and astigmeter.
- the controllable optical element and the measuring and control device form a control loop that minimizes the remaining ametropia of the optical system.
- the optical system comprises a human eye and, if necessary, additionally an artificial visual aid.
- the controllable optical element can be a lens or mirror system, e.g. an optometer and astigmeter or an electrically controllable phoropter. It is also conceivable that the controllable optical element is an adaptive optical system, e.g. a controllable membrane mirror, micro element mirror, a controllable liquid lens or liquid crystal lens. It is also conceivable within the scope of the invention to use a combination of different controllable optical elements.
- the measuring and control unit can comprise an automatic refractometer or aberrometer, wherein this aberrometer can in particular include a Shack-Hartman sensor, a Tscherning arrangement, a Talbot interferometer, a Talbot-Moire interferometer, a confocal wavefront sensor or a point spread function sensor ,
- this aberrometer can in particular include a Shack-Hartman sensor, a Tscherning arrangement, a Talbot interferometer, a Talbot-Moire interferometer, a confocal wavefront sensor or a point spread function sensor ,
- the controllable phoropter can contain phase plates.
- these can have an arbitrarily defined, locally distributed phase shift for light, which is suitable for also compensating for complex disturbances in the optical system to be examined.
- the complex disturbances can in particular contain higher-order aberrations, which are described, for example, with the aid of a wavefront, which represents the local distribution of the phase shift or the transit time difference for the light.
- the device for determining the ametropia of an optical system can also be designed such that dynamic processes, in particular those of accommodation, are recorded.
- fixation incentives visual samples
- the fixation incentives can include eye charts, static and / or dynamic images, 3-dimensional targets, binocular targets such as Polatest, or special geometric patterns to identify individual aspects of the ametropia optical system.
- These various fixation incentives can advantageously be generated with electronic displays, such as liquid crystal, plasma, deformable mirror or microdisplays. These can be integrated in the device or placed outside the device (clear view arrangement).
- defined lighting conditions are possible in order to record the behavior of the optical system to be examined under different lighting conditions.
- it is possible in particular to determine the ametropia for day and night vision.
- It is also advantageous to integrate a measuring system for determining the pupil diameter under different lighting conditions of the optical system.
- the invention it is also possible to carry out the determination of the ametropia of the human eye in a binocular manner. This can be done simultaneously, alternately or sequentially, for example. It is advantageous to choose the binolular verge angle in accordance with the distance of the fixation target in order to create the most realistic visual conditions possible.
- the invention further comprises the determination of a criterion in which the expected deviation of a purely subjective as compared to the objective determination of ametropia is determined.
- a confidence measure is preferably determined, which can be derived from the accommodation behavior of the optical system to be examined during the measurement and / or from the magnitude of the higher order aberrations absolutely or relative to the measure of the lower orders. For example, this number can be used to define an indicator that indicates whether a further purely subjective determination of the ametropia of the optical system is additionally required.
- a desired correction of the ametropia thus determined is achieved, among other things, by glasses of different complexity, such as purely spherical, aspherical, with cylinder and / or astigmatism correction or by correcting further higher orders.
- Other options include the use of contact lenses or intraocular lenses as well as various laser correction options such as LASIK, LASEK, PRK, LTKP and the use of fs lasers. It is advantageous according to the invention to use the controllable optical element during the determination of the ametropia to correct it only as far as the desired correction option allows.
- the beam path of a treatment laser or an illumination system for diagnostic or therapeutic purposes is additionally reflected in the beam path of the device.
- the changeable optical element is, for example, a contact lens, an intraocular lens or directly the cornea and / or the lens of the eye to be treated.
- the optical properties of the optical system are changed by the treatment laser by means of ablation or disruption or by an illumination system with the aid of thermal or photochemical effects.
- a device which is constructed such that the ametropia of an optical system can be objectively detected and / or adjusted by means of at least one controllable optical element, at least one measuring and control device, the device further comprising means Allow subjective change of the determined values.
- the problem mentioned at the outset is also solved by a method for determining the ametropia of an optical system with a device comprising a controllable optical element and a measuring and control device, the controllable optical element being set by the measuring and control device in a first method step that the ametropia of the optical system is compensated. It is particularly advantageous if the controllable optical element is manually set by the patient in a further method step in order to achieve a subjectively optimal compensation of the ametropia.
- FIG. 1 shows a sketch of a first embodiment of the device according to the invention
- FIG. 2 shows a sketch of a second embodiment of the device according to the invention
- Fig. 3 is a sketch of a third embodiment of the device according to the invention.
- FIG. 1 An eye 1 of a patient looks through a controllable optical element 2 and through a beam splitter 4 at a visual sample 5.
- the human eye 1 to be examined can, for example, with additional visual aids such as a contact lens or the like and is therefore referred to as optical system 1 for the further description.
- the controllable optical element 2 can be, for example, an electrically controlled phoropter.
- the beam path of a preferably automatic refractometer or aberrometer is reflected by means of the beam splitter 4. This is referred to below as measuring and control device 3.
- the measuring radiation of the measuring and control device 3 and the mirroring of the beam splitter 4 are expediently in the infrared range, so that a patient cannot recognize this radiation and only perceives the visual sample 5.
- the measuring and control device 3 comprises an automatic refractometer or aberrometer 3.1, the measurement signals of which are processed via a processor 3.2 and a control device 3.3 such that they control a drive 7 of the controllable optical element 2. This almost compensates for the ametropia of the optical system 1.
- the control device 3.3 can additionally be operated via a manual control 3.4. Using the manual control 3.4, the patient can make a subjective post-correction according to the visual test 5 seen. The final correction values for an eyeglass prescription can be taken from a data output 8.
- Fig. 2 shows schematically an extended embodiment.
- the controllable optical element 2 is here a contact lens, intraocular lens or phase plate, the refractive power of which is changed by material removal by means of spatially and energetically controlled laser radiation until the ametropia of the patient's eye is compensated objectively and subjectively.
- the radiation from a laser 6 is reflected into the beam path by means of a second beam splitter 9.
- the structure and function of the control loop otherwise correspond to the embodiment shown in FIG. 1.
- FIG. 3 shows a third embodiment of the device according to the invention, in which the controllable optical element 2 is the cornea of the patient himself compared to the embodiment shown in FIG. 2.
- the controllable optical element 2 is the cornea of the patient himself compared to the embodiment shown in FIG. 2.
- an immediate correction of the cornea is carried out after the objectively measured correction using known removal methods such as e.g. PRK, Lasik or Lasek performed. Immediate subjective control of the eyesight is not possible here, so instead of a visual sample 5, an insight 10 is provided for observing the eye.
- the measurement beam path is viewed in the direction of the eye in front of the controllable optical element 2, this is done together with the defective eye measured as an overall system.
- the feedback of the measurement and control signal to the changeable or controllable optical element 2 results in a closed control loop which adjusts the signal to zero.
- Remaining imaging errors of the system eye correction element for example imaging errors due to accommodation, are displayed and can be analyzed and taken into account if necessary. This also applies to the prescription of reading glasses if there is a corresponding distance between the visual samples. If the measurement system is reflected in the direction of the eye after the controllable optical element 2, only the optical system of the eye is measured, the signal is retained and controls the controllable optical element 2 for the pre-calculated compensation of the ametropia.
- the controllable optical element 2 can be a controllable phoropter or a lens or mirror system, e.g. be an optometer and astigmeter.
- controllable material processing lasers e.g. an excimer laser
- individually adjusted corrections are also to be carried out, for example using specially manufactured spectacle lenses (phase plates) or contact lenses or direct ablation of the cornea, which may have arisen as a result of a wavefront analysis.
- the laser is controlled by the measuring system online or offline for processing.
- the device according to FIG. 1 is provided with an additional reflection according to FIG. 2. It is physically and technically possible to follow the effect of corneal ablation in real time, but not subjectively by the patient at the current state of the surgical technique.
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- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04740327A EP1641382A1 (de) | 2003-06-27 | 2004-06-25 | Vorrichtung und verfahren zur bestimmung der fehlsichtigkeit eines optischen systems |
US10/562,501 US7673992B2 (en) | 2003-06-27 | 2004-06-25 | Device and method for determining the amertopia of an optical system |
DE112004001005T DE112004001005D2 (de) | 2003-06-27 | 2004-06-25 | Vorrichtung zur Bestimmung der Fehlsichtigkeit eines optischen Systems |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10329165A DE10329165A1 (de) | 2003-06-27 | 2003-06-27 | Vorrichtung zur Bestimmung der Fehlsichtigkeit eines optischen Systems |
DE10329165.2 | 2003-06-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005000112A1 true WO2005000112A1 (de) | 2005-01-06 |
Family
ID=33521138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/006918 WO2005000112A1 (de) | 2003-06-27 | 2004-06-25 | Vorrichtung und verfahren zur bestimmung der fehlsichtigkeit eines optischen systems |
Country Status (4)
Country | Link |
---|---|
US (1) | US7673992B2 (de) |
EP (1) | EP1641382A1 (de) |
DE (2) | DE10329165A1 (de) |
WO (1) | WO2005000112A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007036356A1 (de) * | 2005-09-27 | 2007-04-05 | Iroc Ag | Vorrichtung für die binokulare visusprüfung |
DE102006005473B4 (de) * | 2005-02-01 | 2009-06-18 | Kurt Heiberger | Vorrichtung zum Messen und zur chirurgischen Korrektur von Abbildungsfehlern im menschlichen Auge |
WO2011113537A1 (de) * | 2010-03-16 | 2011-09-22 | Stuetz Ignaz Alois | Verfahren zur kompensation und simulation der (anamorphotischen) verzeichnung |
US9895058B2 (en) | 2011-03-25 | 2018-02-20 | Carl Zeiss Meditec Ag | Heads-up vision analyzer |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013096775A1 (en) * | 2011-12-21 | 2013-06-27 | The Arizona Board Of Regents On Behalf Of The University Of Arizona | Holographic binocular adaptive see-through phoropter |
US9681800B2 (en) * | 2005-10-27 | 2017-06-20 | The Arizona Board Of Regents On Behalf Of The University Of Arizona | Holographic adaptive see-through phoropter |
US8318055B2 (en) | 2007-08-21 | 2012-11-27 | Johnson & Johnson Vision Care, Inc. | Methods for formation of an ophthalmic lens precursor and lens |
US7905594B2 (en) | 2007-08-21 | 2011-03-15 | Johnson & Johnson Vision Care, Inc. | Free form ophthalmic lens |
US8317505B2 (en) | 2007-08-21 | 2012-11-27 | Johnson & Johnson Vision Care, Inc. | Apparatus for formation of an ophthalmic lens precursor and lens |
US8313828B2 (en) | 2008-08-20 | 2012-11-20 | Johnson & Johnson Vision Care, Inc. | Ophthalmic lens precursor and lens |
US8333474B2 (en) * | 2007-10-19 | 2012-12-18 | Wavetec Vision Systems, Inc. | Optical instrument alignment system |
US9417464B2 (en) | 2008-08-20 | 2016-08-16 | Johnson & Johnson Vision Care, Inc. | Method and apparatus of forming a translating multifocal contact lens having a lower-lid contact surface |
US8240849B2 (en) * | 2009-03-31 | 2012-08-14 | Johnson & Johnson Vision Care, Inc. | Free form lens with refractive index variations |
US8807076B2 (en) * | 2010-03-12 | 2014-08-19 | Johnson & Johnson Vision Care, Inc. | Apparatus for vapor phase processing ophthalmic devices |
DE102011001083B4 (de) * | 2011-03-04 | 2015-11-05 | Eyesight & Vision Gmbh | Projektorvorrichtung mit Selbstkorrekturfunktion sowie Medizingerät mit der Projektorvorrichtung |
US9645412B2 (en) | 2014-11-05 | 2017-05-09 | Johnson & Johnson Vision Care Inc. | Customized lens device and method |
JP2016220880A (ja) * | 2015-05-29 | 2016-12-28 | 株式会社トプコン | 検眼装置 |
US10359643B2 (en) | 2015-12-18 | 2019-07-23 | Johnson & Johnson Vision Care, Inc. | Methods for incorporating lens features and lenses having such features |
US11364696B2 (en) | 2020-09-18 | 2022-06-21 | Johnson & Johnson Vision Care, Inc | Apparatus for forming an ophthalmic lens |
Citations (3)
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US4105302A (en) * | 1976-06-23 | 1978-08-08 | Tate Jr George W | Automatic refraction apparatus and method |
WO1997043945A1 (de) * | 1996-05-21 | 1997-11-27 | Paul Rolf Preussner | Elektromotorisch betriebener phoropter |
US6491394B1 (en) * | 1999-07-02 | 2002-12-10 | E-Vision, Llc | Method for refracting and dispensing electro-active spectacles |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1955859C3 (de) * | 1969-11-06 | 1982-04-08 | Fa. Carl Zeiss, 7920 Heidenheim | Vorrichtung zur Ermittlung des Refraktionszustandes eines Auges |
DE60121976D1 (de) * | 2000-10-10 | 2006-09-14 | Univ Rochester | Bestimmung der okularen refraktion mittels wellenfrontaberrationsdaten |
AU2002353960A1 (en) * | 2001-11-09 | 2003-05-26 | Wavefront Sciences, Inc. | System and method for perfoming optical corrective procedure with real-time feedback |
-
2003
- 2003-06-27 DE DE10329165A patent/DE10329165A1/de not_active Ceased
-
2004
- 2004-06-25 WO PCT/EP2004/006918 patent/WO2005000112A1/de active Application Filing
- 2004-06-25 DE DE112004001005T patent/DE112004001005D2/de not_active Expired - Fee Related
- 2004-06-25 US US10/562,501 patent/US7673992B2/en active Active
- 2004-06-25 EP EP04740327A patent/EP1641382A1/de not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4105302A (en) * | 1976-06-23 | 1978-08-08 | Tate Jr George W | Automatic refraction apparatus and method |
WO1997043945A1 (de) * | 1996-05-21 | 1997-11-27 | Paul Rolf Preussner | Elektromotorisch betriebener phoropter |
US6491394B1 (en) * | 1999-07-02 | 2002-12-10 | E-Vision, Llc | Method for refracting and dispensing electro-active spectacles |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006005473B4 (de) * | 2005-02-01 | 2009-06-18 | Kurt Heiberger | Vorrichtung zum Messen und zur chirurgischen Korrektur von Abbildungsfehlern im menschlichen Auge |
WO2007036356A1 (de) * | 2005-09-27 | 2007-04-05 | Iroc Ag | Vorrichtung für die binokulare visusprüfung |
WO2011113537A1 (de) * | 2010-03-16 | 2011-09-22 | Stuetz Ignaz Alois | Verfahren zur kompensation und simulation der (anamorphotischen) verzeichnung |
EP2371270A1 (de) * | 2010-03-16 | 2011-10-05 | Ignaz Alois Stuetz | Verfahren zur Kompensation und Simulation der (anamorphotischen) Verzeichnung |
US9895058B2 (en) | 2011-03-25 | 2018-02-20 | Carl Zeiss Meditec Ag | Heads-up vision analyzer |
Also Published As
Publication number | Publication date |
---|---|
DE10329165A1 (de) | 2005-01-13 |
US20080192201A1 (en) | 2008-08-14 |
US7673992B2 (en) | 2010-03-09 |
EP1641382A1 (de) | 2006-04-05 |
DE112004001005D2 (de) | 2006-03-30 |
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