+

WO1999003013A1 - Procede pour l'amelioration du pouvoir de perception optique par modification de l'image retinale - Google Patents

Procede pour l'amelioration du pouvoir de perception optique par modification de l'image retinale Download PDF

Info

Publication number
WO1999003013A1
WO1999003013A1 PCT/DE1998/001840 DE9801840W WO9903013A1 WO 1999003013 A1 WO1999003013 A1 WO 1999003013A1 DE 9801840 W DE9801840 W DE 9801840W WO 9903013 A1 WO9903013 A1 WO 9903013A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
enhancement system
image enhancement
eye
scan
Prior art date
Application number
PCT/DE1998/001840
Other languages
German (de)
English (en)
Inventor
Heinrich Alexander Eberl
Günter ABERSFELDER
Helmut Grantz
Thorsteinn Halldorsson
Horst Schmidt-Bischoffshausen
Stefan Uhl
Original Assignee
Daimlerchrysler Ag
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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Priority to US09/462,440 priority Critical patent/US6523955B1/en
Priority to EP98942492A priority patent/EP1000376A1/fr
Priority to JP50798799A priority patent/JP2002510407A/ja
Publication of WO1999003013A1 publication Critical patent/WO1999003013A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
    • 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
    • A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0187—Display position adjusting means not related to the information to be displayed slaved to motion of at least a part of the body of the user, e.g. head, eye

Definitions

  • the invention relates to glasses with the aid of which a retinal reflection on the inside of the retinal reflex image of the eye is recorded electronically with different brightness of the surroundings, modified with a computer and superimposed on the original image physiologically without delay via a lighting device and a back reflection via the same glasses is that there is an improved visual impression.
  • HMD Helmet-mounted-display
  • the eye itself is able to roughly stabilize the retinal image by adjusting movements of the eye apple, which originate from so-called vestibular ocular reflexes (VOR) of the ear-canal system and serves to hold the fixation point during head movements.
  • VOR vestibular ocular reflexes
  • the fine adjustment is done with the image as a reference.
  • This image tracking is also used by the eye to adapt the VORs to dynamic eye alignment.
  • the object of the invention is to solve the problems of image stabilization when superimposing external images with the real image.
  • the invention is based on the older German patent application 19631414 with the designation: "Device for recording the retinal reflex and superimposition of additional images in the eye”.
  • This describes a device with which the retinal reflex image using a confocal imaging, two-axis scanning system via the reflection of the The inside of partially transparent and appropriately curved glasses is recorded in series with a highly sensitive photodetector.
  • the above-mentioned problems are basically solved with this technique, but concrete implementations and applications have not been specified.
  • the basic idea of the new invention to use this method to improve the perception of the eye.
  • the physical-technical problems that have to be solved for this result from the physiological properties of the eye and the constantly changing lighting conditions in the environment. Because of the variable lighting conditions and the different optical tasks in its basic functions, the eye is a very dynamic sense organ. It adapts to varying the intensity of the backlight over 12 decades. It switches from color vision in daylight to pure black and white vision at night. Light in the wavelength range 400-1500 nm is from transmitted to the eye and imaged on the retina. Only light in the range of 400 nm to 750 nm is perceived, ie the infrared light in the range of 750-1500 nm, which is very bright with both exterior and interior lighting, remains unused for visual perception.
  • the eye detects an angular range of approximately 100 ° horizontally and vertically.
  • the image resolution decreases very quickly with the angular distance from the visual axis.
  • instantaneous vision is limited to a central angular range of only +/- 5 ° and "sharp" vision, for example when reading or driving, is limited to the very small central angular range of +/- 0.5 °
  • Different movements of the eyes This leads to the following consequences, which under certain circumstances impair the perception of the eye and which are to be improved in the context of the new invention:
  • the object of the present invention is now to propose an arrangement which, like the eye, is designed to be very variable in its basic functions and adapted to the requirements of the visual process, but at the same time the special physiology and dynamics of the eye and the varying lighting conditions of the environment and the invisible IR range taken into account and exploited.
  • This can only be achieved inadequately with the scanning and scanning variants (serial raster scan, serial spiral scan) specified in the earlier invention report. This concerns both the scanning pattern of the image recording of the retinal reflex and the rear projection of the laser image into the eye.
  • a fundamental problem of serial versus parallel image scanning is the short dwell time of the scanner in every image pixel.
  • a uniform scan for example of 0.5 million pixels in a scan time of 40 ms, means an integration time of only 0.08 ⁇ s, ie 80 ns, in each pixel.
  • the parallel time integration of all pixels of the eye itself is 10-20 ms.
  • a laser power of approximately 40 ⁇ W is necessary in order to achieve a signal-to-noise ratio of 17 from an image pixel during the raster scan (see, for example, A Plesch, U. Klingbeil, and J. Bille, "Digital laser scanning fundus camera", Applied Optics, Vol. 26, No. 8. p.1480-1486 (1987)).
  • serial image scanning has the crucial advantage of better suppression of stray light, easier optics and the possibility of exact reversal of the beam path when image back projection with a laser for the recording of the retinal reflex and for this reason should be retained in this invention report.
  • An extension of the dwell time can be achieved by changing the scan pattern.
  • the raster scan is by no means the optimal scan pattern.
  • a scan pattern adapted to the vision process should become increasingly slower and denser for day vision towards the center, and vice versa for adaptation to night vision.
  • the recorded signal can be influenced by changing the spot size of the scan and thus also the image resolution.
  • the number of signal photons N s that are recorded by the retina per image pixel by a scanning recording device can be calculated using the following formula:
  • N S (BT ⁇ ⁇ ) (A 0 R) (S / 2 ⁇ ) (A p / D 2 ) (1 / ⁇ )
  • T the optical transmission from the retina to the photodetector
  • ⁇ the integration time in an image pixel on the retina
  • a 0 the area of the image pixel
  • R reflectivity of the image pixel
  • ⁇ spectral width of the received signal
  • a p pupil area
  • the invention proposes scanning the retina in a sequence of concentric circles (circle center is equal to fovea centralis), whose radius gradually increases or decreases.
  • This type of scanning is known as a circular scan.
  • the circular scan is optimal due to the rotational symmetry of the eye lens and the pupil around the visual axis and the rotationally symmetrical distribution of the photoreceptors in the retina.
  • the invention further proposes that an identical circular scan be used for the recording of the retinal reflex from the surroundings and the image projection with the laser. Since with the circular scan from the outside to the center, after reaching the center, the scan axis runs the same way backwards, you can either take the image during the scan to the center and project it from the center to the outside, or take the image over the entire scanning process and projection only in a second can be used.
  • the circular scan With a constant deflection of scanning mirrors in two directions (Lissajou figure), the circular scan inevitably slows down the dwell time towards the center.
  • the invention provides that, for day vision, the scanning time of neighboring circles, depending on the exposure conditions, can be additionally slowed down and even accelerated for night vision.
  • the sampling rate (residence time per pixel) in this area can be increased by this factor, 100.
  • a circular scan can be carried out in analog control with periodically oscillating orthogonal scanning mirrors, or in digital control by approaching the circular track with a large number of straight sections.
  • analog control signals which are digital can be called and are best suited for these variable conditions.
  • the invention further provides that the current image pixel size on the retina can be variably set in addition to the scanning speed.
  • the image resolution is also adapted to the situation.
  • the resolution can be set by changing the radius of the scan radii.
  • the image resolution is determined by the aperture diameter in the intermediate focus in front of the photodetector and can be adjusted by changing it.
  • the invention provides that liquid crystal diaphragms or electro-optical diaphragms are used for this so that this setting is as fast as possible, i.e. can be performed within one sampling cycle.
  • the invention proposes that the change in the scanning process and aperture control in the projection channel is the same as in the recording channel.
  • the variation in the optical integration time and image pixel area can then be compensated for in the projection channel by correspondingly varying the transmission power of the laser.
  • the level of the received signal is also dependent on the spectral bandwidth of the receiver and can be increased by broadening it.
  • the invention provides that in the area of bright day vision (photopic vision) a splitting of the beam path into the color channels red-green-blue corresponding to the eye color sensitivity can be carried out with a spectral width of about 100 nm each. This enables color-true image recording and, with appropriate three-color lasers, a color back projection into the eye.
  • the invention provides for the merging of all channels into a single (black and white) receiving channel without color resolution. Furthermore, the invention provides that this receiving channel not only encompasses the visible range of 400-700 nm, but also the near infrared range of 700-1000.
  • the eye has full transparency between 400 - 1000 nm and displays a comparable image between 700 - 1000 nm and between 400 - 700 nm.
  • Photo receivers with high quantum efficiency such as photomultipliers and silicon avalanche diodes are available over the entire spectral range from 400 to 1000 nm
  • Incandescent lamps which are used for indoor lighting of buildings, or outdoors for street lighting and vehicles, emit 10 times more light between 700 and 1000 nm than between 400 and 700 nm.
  • the reflectivity of the vegetation of nature is higher by a factor of 5-10 between 700 - 1000 nm than between 400 - 700 nm.
  • the received signal can be increased again by a factor of 100 by expanding the spectral range.
  • the expansion of the spectral range can either be permanently installed in each device or can be made variable by changing spectral filters. If a color display is not required, it makes sense to use green laser light for the rear projection into the eye because of the highest sensitivity and contrast perception of the eye with this color.
  • Additional methods for signal improvement that can be used here are the integration of several successive images and the image correlation, e.g. Images of the two eyes.
  • the receiving area of this dynamic recording system comprises irradiations on the retina between 10 " W / cm and 100 W / cm, which includes the area of the typical inside and outside brightness .
  • the scanning system Because of the slow and fast eye movements, it is necessary to design the scanning system so that it constantly follows the change of the visual axis through the glasses, i.e. that the axis of symmetry of the image scan, both in the recording and in the projection, is identical to the visual axis.
  • the invention provides that before and after the scanning of the network treflexes or the image projection into the eye, a Centering the circular scan on the eye pupil is performed.
  • the largest scanning angle of the circular scan is selected so that when the scan symmetry axis is deposited from the visual axis, the outer surface of the eyeball, sclera with rainbow skin and pupil opening is detected by the circular scan. Since these parts of the eye, which are well illuminated by the outside light, are not imaged sharply, but diffusely in the intermediate image plane of the photodetector, the received signal does not provide any image information here, but rather an integral indication of the optical backscattering capacity of the original.
  • Fig. 1 shows schematically the concentric scanning process with adjusted system
  • Fig. 2 shows the search mode for centering the scan through the eye pupil.
  • the invention provides that pupil tracking in the outer regions of the circular scan, with simultaneous signal evaluation in the recording channel as described above, is also carried out with the active illumination of the laser projection into the eye.
  • the invention also provides that the light scattered back by both the surroundings and the laser is recorded and evaluated even during the laser image projection.
  • This simultaneous recording of the retinal reflex from the environment and the post-processing laser image projection opens up the possibility of the degree of overlap and constantly checking the temporal synchronization of the two images, recognizing any differences as image interference (moiré pattern), in order to then compensate for them subsequently using correction signals.
  • the recording and projection technique in the sense of the invention can be carried out either independently on one eye of a viewer or on both eyes at the same time. Because of the steroscopic vision of both eyes, a three-dimensional image recording and image reproduction is realized in the latter case.
  • Two scanning elements and a correction mirror which can also be adjustable, are used to adjust the scan by the eye, even with the various eye movements.
  • 3 shows a schematic overview of the entire system.
  • the retina of the NH eye is scanned with the focused beam.
  • AA represents the eyeball and AP the eye pupil.
  • the partially permeable glasses are referred to here as BG.
  • the rays passing through from the surroundings are focused on the retina, at the same time the retina is scanned at points, the scanning beam always looking into a radiation sink through the glasses.
  • the circular scan is carried out with the two-axis scanning elements HSS and VSS.
  • the auxiliary mirror HS which can be actively adjustable, the direction of incidence and position of the beam on the inner surface of the glasses BG are set.
  • the SUS jet switch Either the illuminating laser beam can be passed through a central bore and the reception beam, which usually has a much larger diameter, can be reflected into the reception unit in separate directions, or an actively switching mirror element can be used that switches between reception and transmission.
  • the receiving unit can e.g. from three separate reception channels for the primary colors red, green and blue or other wavelength ranges e.g. exist in the near infrared range.
  • the beam path of all spectral channels is brought onto an axis using dichroic mirrors DS.
  • An actively adjustable field-of-view aperture GFB is used to adjust the spot size of the scanning beam on the retina and to possibly fine-tune the optical axis.
  • the sending unit can e.g. be created from three lasers with the basic colors red LR, green LG and blue LB.
  • the individual beams are either modulated externally with image modulators MR, MG and MB or, more simply, directly via the excitation current of the laser emission.
  • the size and position of the laser scanning spot on the retina is controlled by an actively controllable aperture LAA which is set in the intermediate focus of two lenses in the beam path.
  • the receivers for scanning the retinal reflex image are e.g. Suitable for photomultipliers, which alternately automatically switch to photon-counting operation when the optical signals are very weak and to a measuring operation when the signals are strong.
  • Avalanche photodiodes can also be used as receivers.
  • Semiconductor lasers or miniaturized solid-state lasers with a low continuous wave power are provided as light sources for the rear projection of the images into the eye, which can cause no danger to the eye.
  • the image modulation could be carried out directly via their power supply. So that all colors are generated, the use of three lasers with the basic colors red, green and blue is recommended.
  • the well-known color triangle of the human face shows, everyone else can Colors as well as the non-colors gray and white are formed by color summation of monochromatic laser lines of these colors.
  • the invention also includes the possibility of using individual colors as a monochromatic solution.
  • the invention provides, as shown in Fig. 4, a signal processor SP, which electronically processes the direct image of the retina and synchronizes all functions of the device and that of scanners VSS / HSS, auxiliary mirror HS and laser spot setting LAA and size of the field of view aperture GFB coordinates.
  • the image processing computer BVC then takes over the image perceived by the eye or images from other technical sensors which are fed to the computer via an external connection EA and processes them according to a predetermined software SW before they are modulated onto the laser beams as an image signal with the aid of the signal processor.
  • the flow of the optical and electrical as well as the software signals are shown separately.
  • the complete laser unit is denoted by DE, ME as the modulation unit and PME the complete receiver unit and SUS as the beam switch between the transmitter and receiver unit.
  • laser projection makes it possible to project into the eye and merge it with the original image, and to synchronously superimpose external images that are fed to the computer from the outside into the external image in the eye. If the time span between image acquisition and projection is correspondingly short in comparison to the rapid eye movements, the eye will no longer perceive an image interruption, as when viewing a television screen.
  • the separate but simultaneous image scanning on both eyes also captures the perspective differences between the two images. Since these are retained in both eyes during laser back projection, a restoration of spatial vision is guaranteed.
  • the components used in the invention are today largely miniaturized and available inexpensively.
  • miniaturized tilting mirrors can be used.
  • the second option for producing the circular figures is to use wedge plate scanners that are designed for a beam path in transmission. The continuous beam is refracted by a fixed angle through each of the plates, the entire deflection angle can then be continuously adjusted to zero by a fixed rotation of the wedge plates against each other. When the wedge plates rotate together at a fixed rotational frequency, the deflected beam then describes a circular track.
  • the third possibility is the use of acousto-optical deflection units, which offer the advantage of low inertia and fast deflection.
  • the variably adjustable auxiliary mirror HS will preferably be a mirror that can be adjusted in two axes with microactuators.
  • micromechanical actuators such as e.g. can also be used in widely used laser printers and CD record players.
  • the beam deflection unit and scanner can be accommodated in a simple glasses frame.
  • laser projection units in a small housing e.g. can be accommodated in the size of a paperback book with food supply.
  • the data exchange with an external permanently installed image processing computer can take place either via radio waves or infrared rays. According to the current state of the art, all elements of the device of the invention could thus be carried effortlessly by a human being and the wireless image data exchange with the external computer would enable its unlimited freedom of movement.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Biomedical Technology (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Ophthalmology & Optometry (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

L'invention concerne un système d'amélioration d'image selon la demande DE19631414, système dans lequel l'image de réflexion à l'intérieur de l'oeil est balayée sur la rétine et est reprojetée dans l'oeil, après modification, par le même trajet. L'invention prévoit l'utilisation d'un balayage elliptique.
PCT/DE1998/001840 1997-07-07 1998-07-03 Procede pour l'amelioration du pouvoir de perception optique par modification de l'image retinale WO1999003013A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US09/462,440 US6523955B1 (en) 1997-07-07 1998-07-03 Method for improving optic perceptive faculty by modifying the retinal image
EP98942492A EP1000376A1 (fr) 1997-07-07 1998-07-03 Procede pour l'amelioration du pouvoir de perception optique par modification de l'image retinale
JP50798799A JP2002510407A (ja) 1997-07-07 1998-07-03 網膜画像の修正により視覚的感知能力を高める方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19728890.1 1997-07-07
DE1997128890 DE19728890A1 (de) 1997-07-07 1997-07-07 Verfahren zur Verbesserung des optischen Wahrnehmungsvermögens durch Modifikation des Netzhautbildes

Publications (1)

Publication Number Publication Date
WO1999003013A1 true WO1999003013A1 (fr) 1999-01-21

Family

ID=7834849

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/001840 WO1999003013A1 (fr) 1997-07-07 1998-07-03 Procede pour l'amelioration du pouvoir de perception optique par modification de l'image retinale

Country Status (4)

Country Link
EP (1) EP1000376A1 (fr)
JP (1) JP2002510407A (fr)
DE (1) DE19728890A1 (fr)
WO (1) WO1999003013A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7641342B2 (en) 2000-10-07 2010-01-05 Metaio Gmbh Information system and method for providing information using a holographic element

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999042315A1 (fr) * 1998-02-20 1999-08-26 Daimlerchrysler Ag Procede pour commander ou manoeuvrer des systemes par informations d'image et procede d'acquisition d'informations d'image
DE10047237A1 (de) 2000-09-23 2002-04-11 Physoptics Opto Electronic Gmb System zur Aufnahme des Netzhautreflexbildes
US8042947B1 (en) 2000-10-07 2011-10-25 Metaio Gmbh Information system
EP1430350B1 (fr) * 2000-10-07 2010-06-30 Metaio Gmbh Systeme d'information
WO2002031579A1 (fr) * 2000-10-07 2002-04-18 Physoptics Opto-Electronic Gmbh Procede et dispositif pour faire passer des informations optiques sur la retine humaine
WO2002031581A1 (fr) 2000-10-07 2002-04-18 Physoptics Opto-Electronic Gmbh Systeme et procede permettant de determiner l'orientation d'un oeil
DE10103922A1 (de) 2001-01-30 2002-08-01 Physoptics Opto Electronic Gmb Interaktives Datensicht- und Bediensystem
JP5489539B2 (ja) * 2009-06-05 2014-05-14 キヤノン株式会社 撮像装置、撮像装置の制御方法、ｏｃｔによる断層画像の形成方法
IL252582A0 (en) * 2017-05-29 2017-08-31 Eyeway Vision Ltd A method and system for registration between the outside world and a virtual image

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992003187A1 (fr) * 1990-08-22 1992-03-05 Phoenix Laser Systems, Inc. Systeme d'exploration par un faisceau laser chirurgical
US5467150A (en) * 1993-05-26 1995-11-14 Nikon Corporation Apparatus for measuring a cornea shape
WO1996036036A1 (fr) * 1995-05-09 1996-11-14 University Of Washington Afficheur retinien virtuel a source ponctuelle par fibre optique
DE19631414A1 (de) * 1996-08-05 1998-02-19 Daimler Benz Ag Vorrichtung zur Aufnahme des Netzhautreflexbildes und Überlagerung von Zusatzbildern im Auge

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5467104A (en) * 1992-10-22 1995-11-14 Board Of Regents Of The University Of Washington Virtual retinal display
US5422653A (en) * 1993-01-07 1995-06-06 Maguire, Jr.; Francis J. Passive virtual reality
US5815411A (en) * 1993-09-10 1998-09-29 Criticom Corporation Electro-optic vision system which exploits position and attitude
US5543866A (en) * 1994-01-07 1996-08-06 Jozef F. Van de Velde Scanning laser ophthalmoscope for binocular imaging and functional testing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992003187A1 (fr) * 1990-08-22 1992-03-05 Phoenix Laser Systems, Inc. Systeme d'exploration par un faisceau laser chirurgical
US5467150A (en) * 1993-05-26 1995-11-14 Nikon Corporation Apparatus for measuring a cornea shape
WO1996036036A1 (fr) * 1995-05-09 1996-11-14 University Of Washington Afficheur retinien virtuel a source ponctuelle par fibre optique
DE19631414A1 (de) * 1996-08-05 1998-02-19 Daimler Benz Ag Vorrichtung zur Aufnahme des Netzhautreflexbildes und Überlagerung von Zusatzbildern im Auge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7641342B2 (en) 2000-10-07 2010-01-05 Metaio Gmbh Information system and method for providing information using a holographic element
US8016421B2 (en) 2000-10-07 2011-09-13 Metaio Gmbh Information system and method for providing information using a holographic element
US8944602B2 (en) 2000-10-07 2015-02-03 Metaio Gmbh Information system and method for providing information using a holographic element
US9427154B2 (en) 2000-10-07 2016-08-30 Metaio Gmbh Information system and method for providing information using a holographic element
US10188288B2 (en) 2000-10-07 2019-01-29 Apple Inc. Information system and method for providing information using a holographic element

Also Published As

Publication number Publication date
DE19728890A1 (de) 1999-02-04
JP2002510407A (ja) 2002-04-02
EP1000376A1 (fr) 2000-05-17

Similar Documents

Publication Publication Date Title
US6523955B1 (en) Method for improving optic perceptive faculty by modifying the retinal image
DE10047237A1 (de) System zur Aufnahme des Netzhautreflexbildes
EP0917661A2 (fr) Dispositif pour l'acquisition de l'image reflexe retinienne et la superposition d'images complementaires dans l'oeil
EP1405122B1 (fr) Systeme permettant de determiner l'orientation d'un oeil
DE68927275T2 (de) Bildaufnahmegerät
US9971153B2 (en) Method and apparatus for displaying video data
DE69737700T2 (de) Bildkombinierungsvorrichtung für brillen und gesichtsmasken
DE69433556T2 (de) Bildanzeigevorrichtung
DE102021132465B4 (de) MEMS-Spiegelbasierte erweiterte Realitätsprojektion mit Eye-Tracking
DE69906139T2 (de) Vorrichtung zum verfolgen von augenbewegungen
EP4238621A2 (fr) Lunettes électroniques
JP2001512994A (ja) 広い視野をレーザ走査する検眼鏡
DE10103922A1 (de) Interaktives Datensicht- und Bediensystem
DE102010045364A1 (de) Verfahren und Vorrichtung zur Erzeugung hochwertiger Fundusaufnahmen
DE102016201567A1 (de) Projektionsvorrichtung für eine Datenbrille, Verfahren zum Darstellen von Bildinformationen mittels einer Projektionsvorrichtung und Steuergerät
DE102017211932A1 (de) Projektionsvorrichtung für eine Datenbrille, Datenbrille sowie Verfahren zum Betreiben einer Projektionsvorrichtung
DE102009015598A1 (de) Verfahren und Vorrichtung zum Auffinden von funktionstragenden Gewebearealen in einem Gewebebereich
DE102022101458A1 (de) Mehrebenenprojektion mit laserstrahlabtastung in erweiterterealität-displays
WO1999003013A1 (fr) Procede pour l'amelioration du pouvoir de perception optique par modification de l'image retinale
WO2002097511A1 (fr) Procede et dispositif permettant d'adapter un systeme optique a la ligne de visee de l'oeil humain
DE102017107178A1 (de) Vorrichtung zum Erzeugen von reflexkorrigierten Abbildungen, Mikroskop und Reflexkorrekturverfahren zum Korrigieren von digitalen mikroskopischen Abbildungen
DE19731303B4 (de) Verfahren und Vorrichtung zum kontaktlosen, helmfreien Messen der Blickrichtung von Augen bei Kopf- und Augenbewegungen
EP1840627B1 (fr) Dispositif et procédé destinés à la détermination de l'orientation d'un oeil
EP1056611A1 (fr) Procede pour commander ou manoeuvrer des systemes par informations d'image et procede d'acquisition d'informations d'image
DE102018110642B4 (de) Mikroskopieverfahren zur Abbildung eines Objekts sowie Mikroskop

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1998942492

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 09462440

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 1998942492

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1998942492

Country of ref document: EP

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载