DE4206711A1 - Helmet mounted video monitor - has ground glass plate between lens-and-mirror systems to produce composite image formed from prim. colour components or reproduced picture - Google Patents

Helmet mounted video monitor - has ground glass plate between lens-and-mirror systems to produce composite image formed from prim. colour components or reproduced picture

Info

Publication number
DE4206711A1
DE4206711A1 DE19924206711 DE4206711A DE4206711A1 DE 4206711 A1 DE4206711 A1 DE 4206711A1 DE 19924206711 DE19924206711 DE 19924206711 DE 4206711 A DE4206711 A DE 4206711A DE 4206711 A1 DE4206711 A1 DE 4206711A1
Authority
DE
Germany
Prior art keywords
video monitor
mirror
lens
prim
ground glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19924206711
Other languages
German (de)
Inventor
Joerg Schaffrina
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.)
Alcatel Lucent Deutschland AG
Original Assignee
Alcatel SEL 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 Alcatel SEL AG filed Critical Alcatel SEL AG
Priority to DE19924206711 priority Critical patent/DE4206711A1/en
Publication of DE4206711A1 publication Critical patent/DE4206711A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01Head-up displays
    • G02B27/017Head mounted
    • G02B27/0172Head mounted characterised by optical features
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/1006Beam splitting or combining systems for splitting or combining different wavelengths
    • G02B27/102Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/14Beam splitting or combining systems operating by reflection only
    • G02B27/145Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/40Optical focusing aids
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/0037Production of three-dimensional images
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01Head-up displays
    • G02B27/017Head mounted
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

The video monitor has a monochrome picture tube (1) which provides electrically three partial images from propagation delay devices (2) and colour filters (3) in prim. colours for combination and focusing (4) on a mirror (5) giving a 90 deg. deflection. A second mirror (6) gives another 90 deg. deflection through a second lens (8) into the eye (7). Between the two mirrors a plate (10) of ground glass is provided for presentation of the composite colour picture. Slight movements of the eye w.r.t. the optical axis do not detract from image sharpness. ADVANTAGE - Monitor can be incorporated in helmet so as to give consistently clear and sharp image.

Description

Die Erfindung betrifft einen Videomonitor nach dem Oberbegriff des Anspruchs.The invention relates to a video monitor according to the preamble of Claim.

Aus der DE 35 34 152 A1 ist ein derartiger Videomonitor bekannt, bei dem in einem helmartigen Trageteil, das von einem Benutzer auf den Kopf gesetzt und durch Riemen gehalten werden kann, eine Bildwiedergabevorrichtung sowie Linsen und Spiegel zur Lenkung der Videosignale zu den Augen des Benutzers untergebracht sind. Die Bildwiedergabevorrichtung, z. B. eine Bildröhre, ist über eine Steuerschaltung mit einer Videosignalquelle verbunden. Der Bildröhre vorgesetzt ist eine Linse oder ein Linsensystem, durch das die ausgesandten Lichtstrahlen auf einen Spiegel geworfen werden, von dem sie zu einem zweiten Spiegel reflektiert werden, der sie zu den Augen des Benutzers umlenkt. Der zweite Spiegel kann halbdurchlässig sein, damit der Benutzer durch ihn hindurch auch die Umwelt wahrnehmen kann. Bei zweifacher Anordnung der genannten Bilderzeugungseinrichtung im Trageteil lassen sich stereoskopische Bilder erzeugen und einem Benutzer sichtbar machen. Such a video monitor is known from DE 35 34 152 A1, in the case of a helmet-like carrying part that is worn by a user head up and held by straps, one Image display device and lenses and mirrors for steering the Video signals to the user's eyes are housed. The Image display device, e.g. B. a picture tube is over a Control circuit connected to a video signal source. The The picture tube is placed in front of a lens or a lens system that the emitted rays of light are thrown onto a mirror from which they are reflected to a second mirror, that redirects them to the user's eyes. The second mirror can be semi-permeable so the user can pass through it too can perceive the environment. With a double arrangement of the above Imaging device in the carrying part can be stereoscopic Generate images and make them visible to a user.  

Ferner ist aus der DE 35 31 502 A1 eine Bildwiedergabeanordnung zur farbigen Abbildung eines durch Primärfarbensignale übertragenen Videobildes bekannt, die ein Display enthält, auf dem drei Videobildflächen zur monochromen Darstellung der den Primärfarben Rot, Grün und Blau zugeordneten Intensitätsbilder angeordnet sind. Die in einem Farbsignalspeicher gespeicherten Farbensignale werden von einer Bildpunktsteuerung des Displays in Verbindung mit einer Auslesesteuerung des Speichers ausgelesen und in einer optischen Einrichtung zu einem Farbbild umgewandelt und auf eine Abbildungsfläche projiziert.Furthermore, from DE 35 31 502 A1 an image display device for colored image of a transmitted by primary color signals Known video image that contains a display on which three Video image areas for the monochrome representation of the primary colors Intensity images assigned to red, green and blue are arranged. The color signals stored in a color signal memory become from a pixel control of the display in connection with a Readout control of the memory read out and in an optical Facility converted to a color image and onto a Projected image area.

Weicht die Position eines Auges beim Betrachten eines stereoskopischen Halbbildes von der optischen Achse des Systems ab, so wird das Bild unscharf, das von der der Bildröhre vorgesetzten optischen Einrichtung zur additiven Zusammensetzung des Farbbildes ausgeht. Deshalb liegt der Erfindung die Aufgabe zugrunde, die Betrachtungsmöglichkeit des Monitorbildes in einem Kopfseher so zu verbessern, daß stets ein klares, scharfes Bild zu sehen ist. Gelöst wird diese Aufgabe durch die im Anspruch 1 angegebenen Merkmale. Vorteilhafte Ausgestaltungen sind den Unteransprüchen zu entnehmen.Deviates the position of an eye when looking at one stereoscopic field from the optical axis of the system, the image in front of the picture tube becomes blurred optical device for additive composition of the color image going out. Therefore, the invention is based on the object Possibility of viewing the monitor image in a head-vision improve that a clear, sharp image can always be seen. This problem is solved by the specified in claim 1 Characteristics. Advantageous refinements are in the subclaims remove.

Die Erfindung wird anhand eines Ausführungsbeispiels beschrieben, das in der Figur der zugehörigen Zeichnung schematisch dargestellt ist.The invention is described using an exemplary embodiment, that is shown schematically in the figure of the accompanying drawing is.

In der Figur ist eine als Bildwiedergabevorrichtung dienende Schwarzweiß-Bildröhre mit 1 bezeichnet. In dieser Bildröhre 1 werden durch elektrische Maßnahmen drei Teilbilder erzeugt, die in einer der Bildröhre 1 vorgesetzten optischen Einrichtung 2 durch Laufzeitverzögerer und Farbfilter 3 in farbige Teilbilder der Färbungen Rot, Grün und Blau verwandelt und wieder zu einem Farbbild vereinigt werden. Dieses Farbbild wird durch ein Linsensystem 4 auf einen Spiegel 5 fokussiert, der es im Winkel von etwa 90° zu einem zweiten Spiegel 6 reflektiert. Letzterer lenkt das Bild nochmal um den gleichen Winkel zum Auge 7 eines Benutzers um.In the figure, a black and white picture tube serving as an image display device is designated by 1 . In this picture tube 1 , three partial images are generated by electrical measures, which are converted into colored partial images of the colors red, green and blue in an optical device 2 placed in front of the picture tube 1 by means of delay time delays and color filters 3 and combined again to form a color image. This color image is focused by a lens system 4 onto a mirror 5 , which reflects it at an angle of approximately 90 ° to a second mirror 6 . The latter redirects the image again by the same angle to a user's eye 7 .

Die zweimalige Umlenkung ist erforderlich, weil die beschriebene Anordnung in einem helmartigen Trageteil untergebracht ist, wie es ähnlich im Stand der Technik beschrieben ist. Nach der zweimaligen Spiegelung kann das Farbbild durch ein zweites Linsensystem oder Okular 8 von einem Benutzer betrachtet werden. Entscheidend ist, daß zwischen dem Linsensystem 4 und dem ersten Spiegel 5 oder zwischen den beiden Spiegeln 5 und 6 oder zwischen dem zweiten Spiegel 6 und dem zweiten Linsensystem 8 eine Mattscheibe 10 in den Strahlengang eingefügt ist, auf der das zusammengesetzte Farbbild dargestellt wird. Um dieses Bild wahrnehmen zu können, hat das Auge 7 des Benutzers dieselben Toleranzen wie bei einem Diabetrachter oder dem Schachtsucher einer Spiegelreflexkamera. Kleine Verschiebungen des Auges in bezug zur optischen Achse des Systems bleiben ohne Folgen für die Schärfe des Bildes. Einerseits werden die drei Teilbilder auf die Mattscheibe 10 exakt als ein Farbbild projiziert. Da dieser Teil des Systems einen genau bestimmten Strahlengang zur Mattscheibe hat, andererseits durch dieselbe vom Betrachter getrennt ist, können, einmal eingestellt, keine Störungen aufgrund "schiefer" Betrachtung durch die optische Einrichtung 2 auftreten. Der Gesamteindruck bleibt erhalten und ist immer ansehnlich.The double deflection is necessary because the arrangement described is accommodated in a helmet-like support part, as is similarly described in the prior art. After mirroring twice, the color image can be viewed by a user through a second lens system or eyepiece 8 . It is crucial that between the lens system 4 and the first mirror 5 or between the two mirrors 5 and 6 or between the second mirror 6 and the second lens system 8, a focusing screen 10 is inserted into the beam path, on which the composite color image is displayed. In order to be able to perceive this image, the eye 7 of the user has the same tolerances as in the case of a slide viewer or the shaft finder of an SLR camera. Small movements of the eye in relation to the optical axis of the system have no consequences for the sharpness of the image. On the one hand, the three partial images are projected onto the focusing screen 10 exactly as a color image. Since this part of the system has a precisely defined beam path to the focusing screen, on the other hand it is separated from it by the viewer, once set, no disturbances can occur due to "oblique" viewing by the optical device 2 . The overall impression is preserved and is always impressive.

Claims (4)

1. Videomonitor, der in einem helmartigen, auf dem Kopf tragbaren Trageteil untergebracht ist und der eine Bildwiedergabevorrichtung, die über eine Steuerschaltung mit einer Videosignalquelle verbunden ist, sowie optische Linsen und Spiegel zur Lenkung der Videosignale ins Auge des Benutzers aufweist, dadurch gekennzeichnet, daß hinter dem die Strahlung bündelnden Linsensystem (4) eine Mattscheibe (10) in den Strahlengang eingefügt ist.1. Video monitor, which is housed in a helmet-like, wearable head part and which has an image display device, which is connected via a control circuit to a video signal source, and optical lenses and mirrors for directing the video signals into the eye of the user, characterized in that behind the lens system ( 4 ) that bundles the radiation, a focusing screen ( 10 ) is inserted into the beam path. 2. Videomonitor nach Anspruch 1, dadurch gekennzeichnet, daß die Mattscheibe (10) vor dem ersten Spiegel (5) eingesetzt ist.2. Video monitor according to claim 1, characterized in that the focusing screen ( 10 ) is inserted in front of the first mirror ( 5 ). 3. Videomonitor nach Anspruch 1, dadurch gekennzeichnet, daß die Mattscheibe (10) hinter dem ersten Spiegel (5) eingesetzt ist.3. Video monitor according to claim 1, characterized in that the focusing screen ( 10 ) behind the first mirror ( 5 ) is used. 4. Videomonitor nach Anspruch 1, dadurch gekennzeichnet, daß die Mattscheibe (10) zwischen Spiegel (5, 6) und ein zweites Linsensystem (8) eingesetzt ist.4. Video monitor according to claim 1, characterized in that the focusing screen ( 10 ) between the mirror ( 5 , 6 ) and a second lens system ( 8 ) is used.
DE19924206711 1992-03-04 1992-03-04 Helmet mounted video monitor - has ground glass plate between lens-and-mirror systems to produce composite image formed from prim. colour components or reproduced picture Withdrawn DE4206711A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924206711 DE4206711A1 (en) 1992-03-04 1992-03-04 Helmet mounted video monitor - has ground glass plate between lens-and-mirror systems to produce composite image formed from prim. colour components or reproduced picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924206711 DE4206711A1 (en) 1992-03-04 1992-03-04 Helmet mounted video monitor - has ground glass plate between lens-and-mirror systems to produce composite image formed from prim. colour components or reproduced picture

Publications (1)

Publication Number Publication Date
DE4206711A1 true DE4206711A1 (en) 1993-09-09

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DE19924206711 Withdrawn DE4206711A1 (en) 1992-03-04 1992-03-04 Helmet mounted video monitor - has ground glass plate between lens-and-mirror systems to produce composite image formed from prim. colour components or reproduced picture

Country Status (1)

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DE (1) DE4206711A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008009095A1 (en) * 2008-02-14 2009-08-20 Carl Zeiss Ag Transparent display system e.g. head-up display system, for viewing image in e.g. microscope, has correction lens provided with free-forming surface, where largest distance of intermediate image and side of lens is smaller than preset value

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008009095A1 (en) * 2008-02-14 2009-08-20 Carl Zeiss Ag Transparent display system e.g. head-up display system, for viewing image in e.g. microscope, has correction lens provided with free-forming surface, where largest distance of intermediate image and side of lens is smaller than preset value

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