EP1405125A1 - Head-mounted optical direct visualisation system - Google Patents

Head-mounted optical direct visualisation system

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Publication number
EP1405125A1
EP1405125A1 EP02751021A EP02751021A EP1405125A1 EP 1405125 A1 EP1405125 A1 EP 1405125A1 EP 02751021 A EP02751021 A EP 02751021A EP 02751021 A EP02751021 A EP 02751021A EP 1405125 A1 EP1405125 A1 EP 1405125A1
Authority
EP
European Patent Office
Prior art keywords
optical
user
viewing system
end element
viewing
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.)
Ceased
Application number
EP02751021A
Other languages
German (de)
French (fr)
Inventor
Thomas Alt
Uwe Frey
Werner Schreiber
Harald Volkenandt
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.)
Carl Zeiss AG
Original Assignee
Carl Zeiss 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 Carl Zeiss AG filed Critical Carl Zeiss AG
Publication of EP1405125A1 publication Critical patent/EP1405125A1/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • G02B27/0172—Head mounted characterised by optical features
    • 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
    • G02B27/0176—Head mounted characterised by mechanical features
    • 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
    • G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
    • 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
    • G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
    • G02B2027/0136—Head-up displays characterised by optical features comprising binocular systems with a single image source for both eyes
    • 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
    • G02B2027/0178—Eyeglass type

Definitions

  • the invention relates to a head-mounted optical viewing system (Head Mounted Display (HMD)) according to the preamble of claim 1.
  • HMD Head Mounted Display
  • a viewing system known from the prior art, in particular from US Pat. No. 5,886,882, comprises at least one optical deflection device 210 which is attached to the head of a user with the aid of a frame 220 (see FIG. 2).
  • the optical deflection device 210 comprises an optical end element 215 and serves to deflect a virtual image generated by an image source 230 to the optical end element 215.
  • the optical end element outputs the virtual image in the visual field of the user in front of the user's eyes.
  • a head-mounted optical see-through system comprises an adjusting device attached to the Gostell for variably changing the position of at least the optical end element substantially in a plane parallel to the visual field of the user.
  • this position can be adapted to the individual head dimensions and the individual eye position of the user.
  • the position of the virtual image can be adapted to the individual eye behavior of the user and to his current task-specific main gaze direction. The latter is preferably done with the help of a tracking system.
  • the optical end element is advantageously designed as a prism. This has the advantage that the prism is semi-translucent, so that on the one hand it enables the provision of the virtual image in front of the user's eye, but on the other hand it does not completely block the user's view of the real world.
  • the deflection device in particular a lens system located therein and / or the size of the prism as an end element, can be selected variably in order to optimize the quality and size of the virtual image.
  • the surfaces of the optical end element and / or an optical deflecting element within the deflecting device are at least partially convex or concave.
  • the viewing system according to the invention can also have a second deflection device with a second optical end element for deflecting a second virtual image generated by a second image source to the second optical end element.
  • a second deflection device with a second optical end element for deflecting a second virtual image generated by a second image source to the second optical end element.
  • the first and the second optical end element are then advantageously, but not absolutely necessary, arranged in front of different eyes of the user. In this way, a bi-eyepiece is realized, which enables either simple vision or stereo vision for the user.
  • the frame for carrying the optical deflection device is designed as an eyeglass frame with eyeglass lenses suitable for the user, this has the advantage that the user's ametropia not only when viewing the real world, but also when viewing the virtual image through the eyeglass lenses is corrected.
  • a particularly advantageous solution provides for the optical end element to be fastened, for example glued, to the spectacle lens. Further advantageous embodiments of the invention are the subject of the dependent claims.
  • FIG. 1 shows a head-mounted optical inspection system according to the invention
  • Fig. 2 shows a review system according to the prior art
  • the deflecting device 120 for deflecting a virtual image generated by an image source 230 into the visual field of a user.
  • the deflecting device 120 preferably comprises optical deflecting elements 122, 124 designed as prisms for deflecting the virtual image generated by the image source 230 to an optical end element 128, likewise part of the optical deflecting device 120.
  • the virtual image enters the field of view through the optical end element User in front of his eyes.
  • the deflection device is usually attached to the head of the user with the aid of a frame 130.
  • the deflection device 120 further comprises a lens or a lens system 126 for realizing an optimal image sharpness.
  • an adjusting device 140 for variably changing the position of at least the optical end element 128 is attached to the frame 130.
  • the adjusting device 140 enables the position of the optical end element to be changed essentially in a plane parallel to the visual field of the user.
  • the position of the virtual image in the visual field of the user can be optimally adapted to individual properties of the user or task-specific viewing requirements via the position of the optical end element 128.
  • the anatomical properties of the user include in particular the position of his eyes in the head;
  • the task-specific gaze requirements mean in particular a task-specific main gaze direction.
  • An adjustment of the position of the end element 128 in response to a current viewing situation of the user is possibly possible with the aid of a tracking system.
  • the adjusting device 140 comprises, for example, a horizontal guide rail 144 fastened to the frame 130.
  • a slide 148 is mounted on this guide rail 144 so as to be movable in the X direction.
  • a guide element 149 is fastened to the slide 148, on which in turn the optical end element 128 is mounted so as to be movable in the Y direction.
  • the guide element 149 can be designed, for example, as a threaded spindle.
  • the end element can be positioned in almost any plane parallel to the visual field of the user.
  • the guide rail 144 can also be attached to the frame 130 vertically or at any other angle. The position options are only limited by the length of the guide rail 144 and by the length of the guide element 149.
  • the optical deflection element 124 is preferably fixedly connected to the carriage 148. This ensures that the virtual image is reflected in the optical end element 128 in every position thereof.
  • the described deflection system together with the described adjusting device can be used for only one eye of the viewer, i.e. for monoscopic vision. Alternatively, however, there is also the possibility of using it for both eyes of the viewer, i.e. bi-eyepiece for single vision or stereo vision.
  • the virtual image or the virtual images are fed in centrally from the image source 230 above the central web of the frame 130, in particular above the spectacle frame.
  • the optical lens system 126 is preferably adjustable to change the virtual viewing depth into which the user recognizes a virtual object represented by the virtual image.
  • the optical lens system 126 can also be designed to be adjustable for setting the size and the quality of the virtual image.
  • the optical deflection system 120 is advantageously installed in a closed housing, at least outside the field of view of the user, ie relating to the optical deflection elements 122, 124 and the lens system 126. In this way, the surfaces of the components mentioned are protected from contamination and the quality of the virtual image is not reduced by the incidence of extraneous light.
  • Both one and several image sources 230 can be used, the virtual images of which are distributed to the two eyes of the user by two deflection devices 120 by polarization, grating mirrors or liquid crystal display LCD shutter displays.
  • the deflection device 120 or at least only the optical end element 128 and the adjusting device 140 or at least only the guide element 149 are preferably shown detachable or foldable from the frame 130, in particular if the frame 130 is a spectacle frame. This has the advantage that when the user no longer needs these devices, they can simply be removed from his visual field.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Eyeglasses (AREA)

Abstract

The invention relates to a head-mounted optical direct visualisation system, comprising at least one optical deflecting device (120), for deflecting a virtual image, generated by means of an image source (230), onto the optical terminal element (128). The virtual image is emitted into the field of view in front of the eyes of the user, through the optical terminal element. The optical deflecting device (120) is fixed to the head of the user by means of a frame (130). The aim of the invention is to embody such a conventional direct visualisation system in such a way as to be better suited to the requirements of the optical and anatomical features of the user and the application-specific viewing requirements. Said aim is achieved, whereby an adjuster device (140) is fixed to the frame (130) for the variable altering of the position of at least the optical terminal element (128), essentially in a plane parallel to the field of view of the user.

Description

Kopfmontiertes optisches Durchsichtssystem Head-mounted optical inspection system
Die Erfindung betrifft ein kopfmontiertes optisches Durchsichtssystem (Head Mounted Display (HMD) gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a head-mounted optical viewing system (Head Mounted Display (HMD)) according to the preamble of claim 1.
Demnach umfaßt ein aus dem Stand der Technik, insbesondere aus der US 5,886,882 bekanntes Durchsichtεsystem zumindest eine optische Umlenkeinrichtung 210, welche mit Hilfe eines Gestells 220 am Kopf eines Benutzers befestigt ist (s. Fig. 2). Die optische Umlenkeinrichtung 210 umfaßt ein optisches Endelement 215 und dient zum Umlenken eines von einer Bildquelle 230 erzeugten virtuellen Bildes an das optische Endelement 215. Durch das optische Endelement wird das virtuelle Bild im Gesichtsfeld des Benutzers vor dessen Augen ausgegeben.Accordingly, a viewing system known from the prior art, in particular from US Pat. No. 5,886,882, comprises at least one optical deflection device 210 which is attached to the head of a user with the aid of a frame 220 (see FIG. 2). The optical deflection device 210 comprises an optical end element 215 and serves to deflect a virtual image generated by an image source 230 to the optical end element 215. The optical end element outputs the virtual image in the visual field of the user in front of the user's eyes.
Ein derartiges bekanntes Durchsichtssystem hat jedoch den Nachteil, daß es wenig benutzer- oder anwendungsfreundlich ist.However, such a known viewing system has the disadvantage that it is not very user-friendly or user-friendly.
Ausgehend von diesem Stand der Technik ist es deshalb die Aufgabe der Erfindung, ein bekanntes kopfmontiertes optisches Durchsichtssystem derart weiterzubilden, daß es im Hinblick auf die anatomischen und optischen Eigenschaften des Benutzers sowie im Hinblick auf eine aktuelle, aufgabenbedingte Hauptblickrichtung des Benutzers anpaßbar ist.Based on this prior art, it is therefore the object of the invention to develop a known head-mounted optical inspection system in such a way that it can be adapted with regard to the anatomical and optical properties of the user and with regard to a current, task-related main viewing direction of the user.
Diese Aufgabe wird erfindungsgemäß durch den Gegenstand des Patentanspruchs 1 gelöst. Demnach umfaßt ein kopfmontiertes optisches Durchsichtssystem eine an dem Göstell befestigte Verstellvorrichtung zum variablen Verändern der Position von zumindest dem optischen Endelement im wesentlichen in einer Ebene parallel zum Gesichtsfeld des Benutzers.This object is achieved by the subject matter of claim 1. Accordingly, a head-mounted optical see-through system comprises an adjusting device attached to the Gostell for variably changing the position of at least the optical end element substantially in a plane parallel to the visual field of the user.
Diese erfindungsgemäße Möglichkeit zum Verändern der Position des optischen Endelementes und damit zum Verändern der Position, an welcher der Benutzer das virtuelle Bild innerhalb seines Gesichtsfeldes eingespiegelt bekommt, bietet folgende Vorteile. Zum einen ist somit eine Anpassung dieser Position an die individuellen Kopfabmessungen und an die individuelle Augenstellung des Benutzers möglich. Zum zweiten kann die Position des virtuellen Bildes an das individuelle Augenverhalten des Benutzers sowie an dessen aktuelle aufgabenspezifische Hauptblickrichtung angepaßt werden. Letzteres geschieht vorzugsweise mit Hilfe eines Tracking-Systems.This possibility according to the invention for changing the position of the optical end element and thus for changing the position at which the user receives the virtual image within his visual field offers the following advantages. On the one hand, this position can be adapted to the individual head dimensions and the individual eye position of the user. To the second, the position of the virtual image can be adapted to the individual eye behavior of the user and to his current task-specific main gaze direction. The latter is preferably done with the help of a tracking system.
Vorteilhafterweise ist das optische Endelement als Prisma ausgebildet. Dies hat den Vorteil, daß das Prisma halb lichtdurchlässig ist, so daß es einerseits die Bereitstellung des virtuellen Bildes vor dem Auge des Benutzers ermöglicht, aber andererseits auch den Blick des Benutzers auf die reale Welt nicht gänzlich versperrt.The optical end element is advantageously designed as a prism. This has the advantage that the prism is semi-translucent, so that on the one hand it enables the provision of the virtual image in front of the user's eye, but on the other hand it does not completely block the user's view of the real world.
Vorteilhafterweise sind die Umlenkeinrichtung, insbesondere ein darin befindliches Linsensystem und/oder die Größe des Prismas als Endelement, variabel auswählbar zwecks Optimierung der Qualität und Größe des virtuellen Bildes.Advantageously, the deflection device, in particular a lens system located therein and / or the size of the prism as an end element, can be selected variably in order to optimize the quality and size of the virtual image.
Ebenfalls zur Optimierung der Qualität und der Größe des virtuellen Bildes ist es weiterhin vorteilhaft, wenn die Oberflächen des optischen Endeiementes und/oder eines optischen Umlenkelementes innerhalb der Umlenkeinrichtung, jeweils als Prisma ausgebildet, zumindest teilweise konvex oder konkav gekrümmt sind.To optimize the quality and size of the virtual image, it is also advantageous if the surfaces of the optical end element and / or an optical deflecting element within the deflecting device, each designed as a prism, are at least partially convex or concave.
Das erfindungsgemäße Durchsichtssystem kann neben einer ersten auch eine zweite Umlenkeinrichtung mit einem zweiten optischen Endelement zum Umlenken eines von einer zweiten Bildquelle erzeugten zweiten virtuellen Bildes an das zweite optische Endelement aufweisen. Damit besteht die Möglichkeit zum Einblenden eines zweiten virtuellen Bildes vor Augen des Benutzers. Vorteilhafterweise, jedoch nicht zwingend notwendig, werden das erste und das zweite optische Endelement dann vor unterschiedlichen Augen des Benutzers angeordnet. Auf diese Weise wird ein Bi-Okular realisiert, welches entweder ein Einfachsehen oder ein Stereosehen für den Benutzer ermöglicht.In addition to a first, the viewing system according to the invention can also have a second deflection device with a second optical end element for deflecting a second virtual image generated by a second image source to the second optical end element. This enables the user to display a second virtual image. The first and the second optical end element are then advantageously, but not absolutely necessary, arranged in front of different eyes of the user. In this way, a bi-eyepiece is realized, which enables either simple vision or stereo vision for the user.
Wenn das Gestell zum Tragen der optischen Umlenkeinrichtung als Brillenfassung mit für den Benutzer geeigneten Brillengläsern ausgebildet ist, hat dies den Vorteil, daß auf diese Weise die Fehlsichtigkeit des Benutzers nicht nur beim Betrachten der realen Welt, sondern auch beim Betrachten des virtuellen Bildes durch die Brillengläser korrigiert wird.If the frame for carrying the optical deflection device is designed as an eyeglass frame with eyeglass lenses suitable for the user, this has the advantage that the user's ametropia not only when viewing the real world, but also when viewing the virtual image through the eyeglass lenses is corrected.
Eine besonders vorteilhafte Lösung sieht dabei vor, daß das optische Endelement auf dem Brillenglas befestigt, z.B. aufgeklebt ist. Weitere vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.A particularly advantageous solution provides for the optical end element to be fastened, for example glued, to the spectacle lens. Further advantageous embodiments of the invention are the subject of the dependent claims.
Der Beschreibung sind zwei Figuren beigefügt, wobeiThe description is accompanied by two figures
Fig. 1 ein kopfmontiertes optisches Durchsichtssystem gemäß der Erfindung; und1 shows a head-mounted optical inspection system according to the invention; and
Fig. 2 ein Durchsichtssystem gemäß dem Stand der TechnikFig. 2 shows a review system according to the prior art
zeigt.shows.
Fig. 1 zeigt ein kopfmontiertes optisches Durchsichtssystem 100 gemäß der vorliegenden Erfindung. Es umfaßt eine optische Umlenkeinrichtung 120 zum Umlenken eines von einer Bildquelle 230 erzeugten virtuellen Bildes in das Gesichtsfeld eines Benutzers. Zu diesem Zweck umfaßt die Umlenkeinrichtung 120 vorzugsweise als Prismen ausgebildete optische Umlenkelemente 122, 124 zum Umlenken des von der Bildquelle 230 erzeugten virtuellen Bildes an ein optisches Endelement 128, ebenfalls Bestandteil der optischen Umlenkeinrichtung 120. Durch das optische Endelennent tritt das virtuelle Bild im Gesichtsfeld des Benutzers vor dessen Augen aus. Die Umlenkeinrichtung wird üblicherweise mit Hilfe eines Gestells 130 am Kopf des Benutzers befestigt. Die Umlenkeinrichtung 120 umfaßt weiterhin eine Linse oder ein Linsensystem 126 zur Realisierung einer optimalen Bildschärfe.1 shows a head-mounted see-through optical system 100 in accordance with the present invention. It comprises an optical deflection device 120 for deflecting a virtual image generated by an image source 230 into the visual field of a user. For this purpose, the deflecting device 120 preferably comprises optical deflecting elements 122, 124 designed as prisms for deflecting the virtual image generated by the image source 230 to an optical end element 128, likewise part of the optical deflecting device 120. The virtual image enters the field of view through the optical end element User in front of his eyes. The deflection device is usually attached to the head of the user with the aid of a frame 130. The deflection device 120 further comprises a lens or a lens system 126 for realizing an optimal image sharpness.
Erfindungsgemäß ist an dem Gestell 130 eine Versteilvorrichtung 140 zum variablen Verändern der Position von zumindest dem optischen Endelement 128 befestigt. Die Versteilvorrichtung 140 ermöglicht eine Veränderung der Position des optischen Endelementes im wesentlichen in einer Ebene parallel zum Gesichtsfeld des Benutzers. Auf diese Weise ist die Position des virtuellen Bildes im Gesichtsfeld des Benutzers über die Position des optischen Endelementes 128 optimal an individuelle Eigenschaften des Benutzers oder aufgabenspezifische Blickerfordernisse anpaßbar. Zu den anatomischen Eigenschaften des Benutzers zählt insbesondere die Position von dessen Augen im Kopf; mit den aufgabenspezifischen Blickerfordernissen ist insbesondere eine aufgabenspezifische Hauptblickrichtung gemeint. Eine Anpassung der Position des Endelementes 128 im Ansprechen auf eine aktuelle Blicksituation des Benutzers ist ggf. mit Hilfe eines Tracking-Systems möglich. Zur Verstellung der Position des optischen Endelementes 128 umfaßt die Verstellvorrichtung 140 beispielsweise eine an dem Gestell 130 befestigte horizontale Führungsschiene 144. Auf dieser Führungsschiene 144 ist ein Schlitten148 in X-Richtung verfahrbar gelagert. An dem Schlitten 148 ist ein Führungselement 149 befestigt, auf welchem wiederum das optische Endelement 128 in Y-Richtung verfahrbar gelagert ist. Das Führungselement 149 kann beispielsweise als Gewindespindel ausgebildet sein. Durch ein aufeinander abgestimmtes Verfahren von Schlitten 148 bei gleichzeitig geeignetem Antrieb der Gewindespindel 149 ist das Endelement nahezu beliebig in einer Ebene parallel zum Gesichtsfeld des Benutzers positionierbar. Selbstverständlich kann die Führungsschiene 144 auch vertikal oder in einem beliebigen anderen Winkel an dem Gestell 130 befestigt sein. Die Positionsmöglichkeiten werden lediglich durch die Länge der Führungsschiene 144 sowie durch die Länge des Führungselementes 149 begrenzt.According to the invention, an adjusting device 140 for variably changing the position of at least the optical end element 128 is attached to the frame 130. The adjusting device 140 enables the position of the optical end element to be changed essentially in a plane parallel to the visual field of the user. In this way, the position of the virtual image in the visual field of the user can be optimally adapted to individual properties of the user or task-specific viewing requirements via the position of the optical end element 128. The anatomical properties of the user include in particular the position of his eyes in the head; The task-specific gaze requirements mean in particular a task-specific main gaze direction. An adjustment of the position of the end element 128 in response to a current viewing situation of the user is possibly possible with the aid of a tracking system. To adjust the position of the optical end element 128, the adjusting device 140 comprises, for example, a horizontal guide rail 144 fastened to the frame 130. A slide 148 is mounted on this guide rail 144 so as to be movable in the X direction. A guide element 149 is fastened to the slide 148, on which in turn the optical end element 128 is mounted so as to be movable in the Y direction. The guide element 149 can be designed, for example, as a threaded spindle. By means of a coordinated movement of slide 148 with a suitable drive for the threaded spindle 149, the end element can be positioned in almost any plane parallel to the visual field of the user. Of course, the guide rail 144 can also be attached to the frame 130 vertically or at any other angle. The position options are only limited by the length of the guide rail 144 and by the length of the guide element 149.
Vorzugsweise ist das optische Umlenkelement 124 fest mit dem Schlitten 148 verbunden. Auf diese Weise wird sichergestellt, daß das virtuelle Bild in jeder Position des optischen Endelementes 128 in dieses hineingespiegelt wird.The optical deflection element 124 is preferably fixedly connected to the carriage 148. This ensures that the virtual image is reflected in the optical end element 128 in every position thereof.
Das beschriebene Umlenksystem kann zusammen mit der beschriebenen Versteilvorrichtung für nur ein Auge des Betrachters, d.h. für monoskopisches Sehen, vorgesehen sein. Alternativ dazu besteht jedoch auch die Möglichkeit, es für beide Augen des Betrachters, d.h. bi-okular für Einfachsehen oder Stereosehen, bereitzustellen. Für eine bi-okulare Bildeinspeisung ist es vorteilhaft, wenn das virtuelle Bild oder die virtuellen Bilder zentral über dem Mittelsteg des Gestells 130, insbesondere über der Brillenfassung, von der Bildquelle 230 eingespeist werden. Das optische Linsensystem 126 ist vorzugsweise zum Verändern der virtuellen Blicktiefe, in welche der Benutzer ein durch das virtuelle Bild dargestelltes virtuelles Objekt erkennt, einstellbar. Darüber hinaus kann das optische Linsensystem 126 auch zur Einstellung der Größe und der Qualität des virtuellen Bildes einstellbar ausgebildet sein.The described deflection system together with the described adjusting device can be used for only one eye of the viewer, i.e. for monoscopic vision. Alternatively, however, there is also the possibility of using it for both eyes of the viewer, i.e. bi-eyepiece for single vision or stereo vision. For a bi-ocular image feed, it is advantageous if the virtual image or the virtual images are fed in centrally from the image source 230 above the central web of the frame 130, in particular above the spectacle frame. The optical lens system 126 is preferably adjustable to change the virtual viewing depth into which the user recognizes a virtual object represented by the virtual image. In addition, the optical lens system 126 can also be designed to be adjustable for setting the size and the quality of the virtual image.
Vorteilhafterweise ist das optische Umlenksystem 120 zumindest außerhalb des Gesichtsfeldes des Benutzers, d.h. die optischen Umlenkelemente 122, 124 und das Linsensystem 126 betreffend, in ein geschlossenes Gehäuse eingebaut. Auf diese Weise werden die Oberflächen der genannten Komponenten vor Verschmutzungen bewahrt und die Qualität des virtuellen Bildes wird nicht durch Fremdlichteinfall gemindert. Es können sowohl eine wie auch mehrere Bildquellen 230 eingesetzt werden, deren virtuellen Bilder durch zwei Umlenkeinrichtungen 120 durch Polarisation, Gitterspiegel oder Liquid Crystal Display LCD-Shutter-Displays auf die beiden Augen des Benutzers verteilt werden.The optical deflection system 120 is advantageously installed in a closed housing, at least outside the field of view of the user, ie relating to the optical deflection elements 122, 124 and the lens system 126. In this way, the surfaces of the components mentioned are protected from contamination and the quality of the virtual image is not reduced by the incidence of extraneous light. Both one and several image sources 230 can be used, the virtual images of which are distributed to the two eyes of the user by two deflection devices 120 by polarization, grating mirrors or liquid crystal display LCD shutter displays.
Die Umlenkeinrichtung 120 oder zumindest nur das optische Endelement 128 sowie die Versteilvorrichtung 140 oder zumindest nur das Führungselement 149 sind vorzugsweise von dem Gestell 130 lösbar oder abklappbar abgebildet, insbesondere wenn das Gestell 130 ein Brillengestell ist. Dies hat den Vorteil, daß der Benutzer, wenn er diese Einrichtungen nicht mehr benötigt, diese einfach aus seinem Gesichtsfeld entfernen kann. The deflection device 120 or at least only the optical end element 128 and the adjusting device 140 or at least only the guide element 149 are preferably shown detachable or foldable from the frame 130, in particular if the frame 130 is a spectacle frame. This has the advantage that when the user no longer needs these devices, they can simply be removed from his visual field.
BEZUGSZEICHEN LISTEREFERENCE LIST
100 Durchsichtssystem100 inspection system
120 optische Umlenkeinrichtung120 optical deflection device
122, optische Umlenkelemente122, optical deflection elements
124, 124' optische Umlenkelemente124, 124 'optical deflection elements
126, 126' Linsensystem126, 126 'lens system
128, 128' optisches Endelement128, 128 'optical end element
130 Gestell130 frame
140 Verstellvorrichtung140 adjusting device
144 Führungsschiene144 guide rail
148 Schlitten148 sledges
149 Führungselement149 guide element
210 optische Umlenkeinrichtung210 optical deflection device
215 optisches Endelement215 optical end element
220 Gestell220 frame
230 Bildquelle 230 image source

Claims

PATE NTAN S P R Ü C H E PATE NTAN SPEECH
1. Kopfmontiertes optisches Durchsichtssystem (Head Mounted Display HMD) (106) mit zumindest einer optischen Umlenkeinrichtung (120) mit einem optischen Endelement (128) zum Umlenken eines von einer Bildquelle (230) erzeugten virtuellen Bildes an das optische Endelement (128) durch welches das virtuelle Bild im Gesichtsfeld eines Benutzers vor dessen Augen austritt; und einem am Kopf des Benutzers befestigtes Gestell (130) zum Tragen der Umlenkeinrichtung (120); gekennzeichnet durch eine an dem Gestell (130) befestigte Verstellvorrichtung (140) zum variablen Verändern der Position von zumindest dem optischen Endelement (128) im wesentlichen in einer Ebene parallel zum Gesichtsfeld des Benutzers.1. Head-mounted optical viewing system (Head Mounted Display HMD) (106) with at least one optical deflection device (120) with an optical end element (128) for deflecting a virtual image generated by an image source (230) to the optical end element (128) through which the virtual image emerges in the visual field of a user in front of his eyes; and a frame (130) attached to the head of the user for carrying the deflection device (120); characterized by an adjustment device (140) attached to the frame (130) for variably changing the position of at least the optical end element (128) substantially in a plane parallel to the visual field of the user.
2. Durchsichtssystem nach Anspruch 1 , dadurch gekennzeichnet, daß die Verstellvorrichtung (140) eine an dem Gestell befestigte horizontale oder eine vertikale Führungsschiene (144) aufweist, wobei das optische Endelement (128) beweglich auf einem Schlitten (148) gelagert ist, welcher auf der Führungsschiene (144) verfahrbar ist.2. Viewing system according to claim 1, characterized in that the adjusting device (140) has a horizontal or a vertical guide rail (144) attached to the frame, the optical end element (128) being movably mounted on a carriage (148) which is on the guide rail (144) can be moved.
3. Durchsichtssystem nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Verstellvorrichtung (140) ausgebildet ist, zum kontinuierlichen oder stufenweisen Verändern der Position des Endeiementes (128).3. Viewing system according to one of the preceding claims, characterized in that the adjusting device (140) is designed for continuously or stepwise changing the position of the end element (128).
4. Durchsichtssystem nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Umlenkeinrichtung (120) mit dem optischen Endelement (128) im Hinblick auf eine gewünschte Größe des von ihr vor dem Auge des Benutzers bereitgestellten virtuellen Bildes einstellbar ist.4. Viewing system according to one of the preceding claims, characterized in that the deflection device (120) with the optical end element (128) is adjustable with regard to a desired size of the virtual image provided by it in front of the user's eye.
5. Durchsichtssystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das optische Endelement (128) als Prisma ausgebildet ist. 5. Viewing system according to one of the preceding claims, characterized in that the optical end element (128) is designed as a prism.
6. Durchsichtεsystem nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Größe des Prismas wählbar ist.6. see-through system according to claim 4 or 5, characterized in that the size of the prism is selectable.
7. Durchsichtssystem nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Oberflächen des Prismas, zumindest teilweise gekrümmt sind.7. Viewing system according to claim 5 or 6, characterized in that the surfaces of the prism are at least partially curved.
8. Durchsichtsystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Umlenkeinrichtung (120) zumindest ein optisches Umlenkelement (122, 124) aufweist zum Lenken des von der Bildquelie (230) erzeugten virtuellen Bildes zu dem optischen Endelement (128).8. Viewing system according to one of the preceding claims, characterized in that the deflection device (120) has at least one optical deflection element (122, 124) for directing the virtual image generated by the image source (230) to the optical end element (128).
9. Durchsichtssystem nach Anspruch 8, dadurch gekennzeichnet, daß das optische Umlenkelement (122, 124) als Prisma ausgebildet ist.9. inspection system according to claim 8, characterized in that the optical deflecting element (122, 124) is designed as a prism.
10. Durchsichtssystem nach Anspruch 9, dadurch gekennzeichnet, daß die Oberflächen des Prismas, zumindest teilweise gekrümmt sind.10. Viewing system according to claim 9, characterized in that the surfaces of the prism are at least partially curved.
11. Durchsichtssystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die optische Umlenkeinrichtung (120) ein optisches Linsensystem (126) aufweist, welches zum Verändern der virtuellen Blicktiefe, in welcher der Benutzer ein durch das virtuelle Bild dargestelltes virtuelles Objekt erkennt, einstellbar ist.11. Viewing system according to one of the preceding claims, characterized in that the optical deflection device (120) has an optical lens system (126) which can be adjusted to change the virtual viewing depth in which the user recognizes a virtual object represented by the virtual image ,
12. Durchsichtssystem nach Anspruch 11, gekennzeichnet durch ein Tracking System zum Regeln der Einstellung des Linsensystems (126) im Ansprechen auf die aktuelle Blickrichtung und die reale Blicktiefe des Benutzers.12. Viewing system according to claim 11, characterized by a tracking system for regulating the setting of the lens system (126) in response to the current viewing direction and the real viewing depth of the user.
((
13. Durchsichtssystem nach einem der vorangegangenert Ansprüche, dadurch gekennzeichnet, daß die Umlenkeinrichtung (120) zumindest außerhalb des Gesichtsfeldes des Benutzers in ein geschlossenes Gehäuse eingebaut ist.13. Viewing system according to one of the preceding claims, characterized in that the deflection device (120) is installed at least outside the visual field of the user in a closed housing.
14. Durchsichtssystem nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Umlenkeinrichtung (120) an dem Gestell (130) lösbar oder abklappbar befestigt ist. 14. Viewing system according to one of the preceding claims, characterized in that the deflection device (120) on the frame (130) is detachably or hingedly attached.
15. Durchsichtssystem nach einem der vorangegangenen Ansprüche, gekennzeichnet durch eine zweite Umlenkeinrichtung (120') mit einem zweiten optischen Endelement (128') zum Umlenken eines von einer zweiten Bildquelle erzeugten zweiten virtuellen Bildes an das optische Endelement der zweiten Umlenkeinrichtung; wobei das erste und das zweite optische Endelement (128, 128') vor unterschiedlichen Augen des Benutzers angeordnet sind.15. Viewing system according to one of the preceding claims, characterized by a second deflection device (120 ') with a second optical end element (128') for deflecting a second virtual image generated by a second image source to the optical end element of the second deflection device; wherein the first and second optical end elements (128, 128 ') are arranged in front of different eyes of the user.
16. Durchsichtsystem nach Anspruch 15, dadurch gekennzeichnet, daß die erste mit der zweiten Bildquelle identisch ist.16. Viewing system according to claim 15, characterized in that the first is identical to the second image source.
17. Durchsichtssystem nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß das Gestell (130) als Brillenfassung mit für den Benutzer geeigneten Brillengläsern ausgebildet ist.17. Viewing system according to one of the preceding claims, characterized in that the frame (130) is designed as a spectacle frame with glasses suitable for the user.
18. Durchsichtssystem nach Anspruch 17, dadurch gekennzeichnet, daß das optische Endelement (128, 128') aus Sicht des Benutzers vor den Brillengläsern angeordnet ist.18. Viewing system according to claim 17, characterized in that the optical end element (128, 128 ') from the user's point of view is arranged in front of the glasses.
19. Durchsichtssystem nach Anspruch 1, dadurch gekennzeichnet, daß das optische Endelement (128) auf einem Brillenglas befestigbar ist. 19. Viewing system according to claim 1, characterized in that the optical end element (128) can be attached to a spectacle lens.
EP02751021A 2001-07-06 2002-06-13 Head-mounted optical direct visualisation system Ceased EP1405125A1 (en)

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DE10132872 2001-07-06
DE10132872.9A DE10132872B4 (en) 2001-07-06 2001-07-06 Head mounted optical inspection system
PCT/EP2002/006482 WO2003016981A1 (en) 2001-07-06 2002-06-13 Head-mounted optical direct visualisation system

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US20050083579A1 (en) 2005-04-21
DE10132872A1 (en) 2003-01-16
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JP2005500728A (en) 2005-01-06
US6977776B2 (en) 2005-12-20
DE10132872B4 (en) 2018-10-11

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