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WO1998013721A1 - Affichage monte sur la tete avec transfert d'images par fibres optiques a partir d'un panneau plat - Google Patents

Affichage monte sur la tete avec transfert d'images par fibres optiques a partir d'un panneau plat Download PDF

Info

Publication number
WO1998013721A1
WO1998013721A1 PCT/US1997/017180 US9717180W WO9813721A1 WO 1998013721 A1 WO1998013721 A1 WO 1998013721A1 US 9717180 W US9717180 W US 9717180W WO 9813721 A1 WO9813721 A1 WO 9813721A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
fiber optic
mirror
flat panel
optic strand
Prior art date
Application number
PCT/US1997/017180
Other languages
English (en)
Inventor
James Bertram Blackmon, Jr.
Original Assignee
Mcdonnell Douglas Corporation
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 Mcdonnell Douglas Corporation filed Critical Mcdonnell Douglas Corporation
Priority to AU63587/98A priority Critical patent/AU6358798A/en
Publication of WO1998013721A1 publication Critical patent/WO1998013721A1/fr

Links

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
    • G02B27/0176—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
    • G02B27/017—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
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/163—Wearable computers, e.g. on a belt
    • 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
    • G02B27/0149—Head-up displays characterised by mechanical features
    • G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
    • G02B2027/0159—Head-up displays characterised by mechanical features with movable elements with mechanical means other than scaning means for positioning the whole image
    • 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

  • This invention relates to head mounted display systems and, more particularly, to a body garment mounted electronic system, such as a digital computer system, whose display is mounted to the users head.
  • the visual display of information that is output from an electronic device, such as a computer or television receiver, is necessary to communicate information to a person, who is to act on that information, such as an airport controller observing aircraft positions on a radar display, and/or be entertained, such as the lay person who watches the baseball game or opera on the television display.
  • a person who is to act on that information
  • a radar display observing aircraft positions on a radar display
  • One may also interact with the displayed information, as in the case of modern video games and virtual reality systems.
  • one may acquire information of a technical nature useful for performing industrial maintenance procedures, such as diagnosing the anomalies, faults and failures as might occur in a complex system, such as an aircraft; and then following instructions, presented in text, animation and/or video, to resolve the abnormal condition.
  • the display is mounted upon the persons head and the visual display is output to the persons eyes, a system referred to as a head mounted display.
  • the head mounted display offers a number of advantages: The display is never out of sight, even when the user turns his head, and the user's hands are free to carry on related activity.
  • Existing head mounted displays use an active matrix liquid crystal display or active matrix electroluminescent flat panel mounted in front of or above the user's eye. That arrangement poses problems for the user.
  • the size of those displays range from about one inch by one inch by two inches in size to two inches by two inches by five inches in size and is not insignificant in weight.
  • the bulkiness of the prior designs is discomforting to the user, particularly if it is necessary for the user to work in a confined space or view objects at close range. Many of these devices occlude the user's view, thus preventing binocular vision, making even simple tasks more difficult. Such bulkiness can also cause mechanical and electrical interference with attendant safety hazard.
  • the display is a source of electromagnetic emissions. Those emissions may create electromagnetic interference and/or be monitored by surveillance systems.
  • An object of the invention therefore, is to enhance the portability of electronic computer and other electronic systems that contain displays, and make the user's interface to the display more comfortable and convenient, allowing "hands -free" use. And a further object of the invention is to provide a small, light weight head carried computer display for electronic systems offering a high quality display free of unwanted electromagnetic emissions and electrically conductive materials that could pose a safety hazard.
  • a portable body garment worn electronic digital computer system enclosed in a Faraday cage includes a flat panel output display within that cage for displaying images.
  • a fiber optic transmission line is provided for coupling images appearing on the flat panel output display to head mounted eyeglass frames where the image is transmitted to the wearer's eye by reflection off a mirror.
  • the image appearing at the exit end of the fiber optic strand is focused by a focusing lens onto the mirror; and the distance between the end of the strand and the lens is adjustable.
  • the invention eliminates electromagnetic emissions, reduces bulkiness to the level actendant to an ordinary pair of spectacles, eliminates electrical and mechanical hazards and affords a convenient interface on which to receive information, both text and image .
  • Figure 1 is a pictorial illustration of an embodiment of the invention
  • Figure 2 is a pictorial illustration of a portion of Fig. 1, drawn in larger scale
  • Figure 3 is a pictorial illustration of another portion of Fig. 1, also drawn in larger scale to show additional details of the embodiment.
  • the head mounted viewer and electronic system is generally illustrated in Fig. 1 to which reference is made.
  • a digital computer 1 or other electronic apparatus is supported upon a user's body within the cloth material of a garment that serves to package the computer, such as vest 3, or any other body-mounted packaging technique, such as a belt, a backpack or the like.
  • the computer includes a flat panel display symbolically illustrated as 5.
  • the entire computer and flat panel display is enclosed in a Faraday cage 2, a conventional electromagnetic energy shielding device, represented by dash lines.
  • a pair of spectacles or eyeglass frames 7, as variously termed, is connected by a length of fiber optic cable 9 that serves as a light transmission line, to the vicinity of the flat panel display.
  • the fiber optic cable extends from the flat panel display and through the Faraday cage to the eyeglass frames.
  • Fiber optic cable 9 may be formed of a single fiber optic strand or a bundle of such strands, as desired. At least a portion of the length of fiber optic cable 9 and, preferably, the entire length of that cable is ensheathed or covered by a metallic conductor, forming a coax-cable like structure, and that metallic covering is grounded to the Faraday cage that encloses the computer.
  • the eyeglass frames serve as an appliance that mounts an end of the fiber optic cable to a user's head. Reference is made to Fig.
  • FIG. 2 which illustrates the lower end of fiber optic line 9 and flat panel display 5 in an enlarged partial side view.
  • the optic line's lines metallic sheath, earlier referred to, is illustrated in dash lines 9b.
  • bracket 10 As illustrated the entrance or input end of fiber optic light transmission line 9 is supported by bracket 10 in spaced relationship to a printed circuit board 6 that forms a part of the computer system, partially illustrated in edge view, and in spaced relation to a polished mirror 7, and flat panel display 5.
  • a convex lens 11 is positioned in front of the entrance end of fiber optic line 9 held in place by bracket 12.
  • Mirror 7 is supported by bracket 8 oriented at an angle, suitably forty five degrees, to the display surface of display panel 5, and to lens 11.
  • Circuit board 6 is a rigid dielectric board containing the printed circuit wiring for associated electronics equipment and electronic components at least for supplying operating power to the display panel.
  • the circuit ' board contains the video output and power circuits for a digital computer and the digital computer is included on thac circuit board. It is appreciated that the details of those electronic computer and display circuitry does not form a part of the present invention and is not necessary to understand of the invention so those circuits need not be further described.
  • mirror 7 receives the image displayed and projected from the front of the display panel and reflects that image in a different direction.
  • Lens 11 is positioned to receive that reflected image and focus that image on the entrance of fiber optic line 9.
  • Fig. 3 illustrates to a larger scale the mechanical arrangement of the remaining elements of the display that is positioned on the right side of eyeglass frames 7 in Fig. 1.
  • This end includes fiber optic line 9, lens 13 and beam splitter mirror 15.
  • the output or exit end of the fiber optic line 9 is clipped to a side of the frame.
  • Convex lens 13 is centered at the front of a cylindrical tubular clip 14 that slips over the end of fiber optic line 9 and is supported by that line.
  • the clip allows the distance between the lens and the end of the fiber optic line to be adjusted, thereby varying the focal point of the lens.
  • Mirror 15 is a beam splitter mirror, it reflects some of the incident light, but allows a portion to pass through.
  • Mirror 15 is mounted on a universal joint 16, such as a ball and socket joint. This allows easy adjustment of the mirror's position and allows the mirror to be flipped out of the way when desired.
  • lens 13 is adjusted in position to focus on mirror 15.
  • the image transmitted through fiber optic line 9 exits the end of the line and is enlarged and focused by lens 13 onto mirror 15.
  • mirror 15 reflects that incident image into the user's eye.
  • the lens and mirror arrangement magnifies the fiber optic transmitted flat panel display image, such that the image is projected in front of, and to the top, bottom or side of the eye, for convenient positioning as best suits the user.
  • a concavely curved mirror which provides some magnification, can be substituted for the flat mirror 15, should it be desired to eliminate lens 13.
  • the first image generated by the computer system at flat panel display 5 is transferred to mirror 15 located in front of the user's eye. That mirror serves thus as the electronic systems display.
  • mirror 7 reverses the incident image, left to right, producing a "mirror image" at the entrance end of fiber optic line 9.
  • Mirror 15 at the eye end of the fiber optic line on which the reversed image is incident provides an additional reversal and thereby produces a correct image at the user's eye.
  • the size of mirror 15 is determined by the computer monitor field of view desired, which, typically, is on the order of plus or minus ten to twenty degrees from center, and by the apparent focal distance from the eye.
  • the mirror When mounted on eyeglasses at a distance of approximately one inch from the eye, the mirror should be approximately between one-half inch t ⁇ one inch in diameter.
  • the mirror need be only one quarter inch or less in thickness. It is very light and thin. It is located at the same distance to the eye as the standard eyeglass lens. This allows the user an unobstructed view of both the flat panel display and the immediate environment.
  • the foregoing fiber optic head mounted viewer and computer system leaves the user's hands free of the necessity of carrying any components of the electronic system and offers great convenience. Since the system incorporates a beam splitter mirror, the user is permitted binocular vision of the image, while walking or working on an object. It is apparent that the weight, volume and moment of inertia of the disclosed combination is far less than conventional head mounted displays, and, accordingly, is more comfortable for the user. All electronics are buried within the user's garment, a vest, and are totally enclosed in a Faraday Cage, thus eliminating leakage of electromagnetic fields as could cause electromagnetic interference, electrical shock or discharge nearby explosives.
  • a photosensitive neutral density filter may be incorporated to provide an appropriate contrast ratio for viewing the display image under widely varying lighting conditions.
  • Optical filters and baffles can be incorporated to minimize glare or exposure to laser beams .
  • the viewer arrangement is shown attached to a standard eyeglass frame which appears most convenient. Alternatively it may be attached to a helmet, cap or headband that the user might choose to wear.
  • Two or three mirror and fiber optic devices of the foregoing type may be positioned on either side of the user's head in the vicinity of the , user's eye. Multiple views and/or separate images can thus be observed virtually simultaneously.
  • a single mirror may be used at the image generating device located on the circuit board; and the image displayed on that device viewed directly, such as with a standard fiber optic device.
  • the flat panel display should be mirror image reversed to provide the correct view of the image at the eye . That image reversal on the flat panel display is accomplished in the electronic circuitry using known circuit design techniques.
  • the fiber optic and lens can be located directly above the image generating device on the circuit board and the mirror can be located at the opposite end of the fiber optic, wherein the mirror is used to project the image for viewing. Again, in this instance, image reversal is required by the electronic circuitry.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention porte sur un système informatique, numérique, électronique, monté dans un vêtement et enfermé dans une cage de Faraday, ce système comprenant un affichage de sortie à panneau plat placé dans la cage de façon à afficher des images. Une ligne de transmission par fibres optiques couple des images apparaissant sur l'affichage de sortie à panneau plat à des montures de lunettes, l'image étant transmise vers les yeux de l'utilisateur par la réflexion d'un miroir. De façon appropriée, l'image apparaissant à la sortie du brin de fibre optique est focalisée sur le miroir par une lentille de focalisation, la distance entre l'extrémité du brin et la lentille étant réglable. L'affichage monté sur la tête est compact et léger de manière à améliorer la portabilité du système.
PCT/US1997/017180 1996-09-26 1997-09-17 Affichage monte sur la tete avec transfert d'images par fibres optiques a partir d'un panneau plat WO1998013721A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU63587/98A AU6358798A (en) 1996-09-26 1997-09-17 Head mounted display with fibre optic image transfer from flat panel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72122396A 1996-09-26 1996-09-26
US08/721,223 1996-09-26

Publications (1)

Publication Number Publication Date
WO1998013721A1 true WO1998013721A1 (fr) 1998-04-02

Family

ID=24897048

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/017180 WO1998013721A1 (fr) 1996-09-26 1997-09-17 Affichage monte sur la tete avec transfert d'images par fibres optiques a partir d'un panneau plat

Country Status (2)

Country Link
AU (1) AU6358798A (fr)
WO (1) WO1998013721A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0899599A3 (fr) * 1997-08-01 1999-04-14 Colorado Microdisplay, Inc. Système d'affichage monté sur tête
AU712215B2 (en) * 1993-10-05 1999-11-04 Snap-On Technologies, Inc. Hands free automotive service system
SG92815A1 (en) * 2001-04-10 2002-11-19 Xybernaut Corp Wearable computer and garment system
US6937803B2 (en) 2001-08-06 2005-08-30 Bayerische Motoren Werke Aktiengesellschaft Display arrangement for fading optical information into an observer's field of view
GB2478738A (en) * 2010-03-16 2011-09-21 Belron Hungary Kft Zug Branch Eye level display in communication with electronic device
US9208608B2 (en) 2012-05-23 2015-12-08 Glasses.Com, Inc. Systems and methods for feature tracking
US9236024B2 (en) 2011-12-06 2016-01-12 Glasses.Com Inc. Systems and methods for obtaining a pupillary distance measurement using a mobile computing device
US9286715B2 (en) 2012-05-23 2016-03-15 Glasses.Com Inc. Systems and methods for adjusting a virtual try-on
US9483853B2 (en) 2012-05-23 2016-11-01 Glasses.Com Inc. Systems and methods to display rendered images
US9569669B2 (en) 2013-11-27 2017-02-14 International Business Machines Corporation Centralized video surveillance data in head mounted device
US10481397B2 (en) 2013-07-26 2019-11-19 tooz technologies GmbH Spectacle lens and display device with such a spectacle lens

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4735473A (en) * 1985-05-03 1988-04-05 Thomson-Csf Device for optical-cable transport and combination of light images
US4806011A (en) * 1987-07-06 1989-02-21 Bettinger David S Spectacle-mounted ocular display apparatus
EP0564940A1 (fr) * 1992-04-06 1993-10-13 Motorola, Inc. Communicateur portable
US5416310A (en) * 1993-05-28 1995-05-16 Symbol Technologies, Inc. Computer and/or scanner system incorporated into a garment
JPH07184146A (ja) * 1993-12-24 1995-07-21 Seiko Epson Corp 頭部装着型表示装置
GB2292038A (en) * 1994-08-03 1996-02-07 David Choon Sen Lam Video camera with head mounted display

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4735473A (en) * 1985-05-03 1988-04-05 Thomson-Csf Device for optical-cable transport and combination of light images
US4806011A (en) * 1987-07-06 1989-02-21 Bettinger David S Spectacle-mounted ocular display apparatus
EP0564940A1 (fr) * 1992-04-06 1993-10-13 Motorola, Inc. Communicateur portable
US5416310A (en) * 1993-05-28 1995-05-16 Symbol Technologies, Inc. Computer and/or scanner system incorporated into a garment
JPH07184146A (ja) * 1993-12-24 1995-07-21 Seiko Epson Corp 頭部装着型表示装置
GB2292038A (en) * 1994-08-03 1996-02-07 David Choon Sen Lam Video camera with head mounted display

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 095, no. 010 30 November 1995 (1995-11-30) *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU712215B2 (en) * 1993-10-05 1999-11-04 Snap-On Technologies, Inc. Hands free automotive service system
EP0899599A3 (fr) * 1997-08-01 1999-04-14 Colorado Microdisplay, Inc. Système d'affichage monté sur tête
US6034653A (en) * 1997-08-01 2000-03-07 Colorado Microdisplay, Inc. Head-set display device
SG92815A1 (en) * 2001-04-10 2002-11-19 Xybernaut Corp Wearable computer and garment system
US6937803B2 (en) 2001-08-06 2005-08-30 Bayerische Motoren Werke Aktiengesellschaft Display arrangement for fading optical information into an observer's field of view
DE10229580B4 (de) * 2001-08-06 2008-06-12 Bayerische Motoren Werke Ag Anzeigevorrichtung zum Einblenden von optischen Informationen in das Blickfeld eines Beobachters
GB2478738A (en) * 2010-03-16 2011-09-21 Belron Hungary Kft Zug Branch Eye level display in communication with electronic device
US9236024B2 (en) 2011-12-06 2016-01-12 Glasses.Com Inc. Systems and methods for obtaining a pupillary distance measurement using a mobile computing device
US9208608B2 (en) 2012-05-23 2015-12-08 Glasses.Com, Inc. Systems and methods for feature tracking
US9235929B2 (en) 2012-05-23 2016-01-12 Glasses.Com Inc. Systems and methods for efficiently processing virtual 3-D data
US9286715B2 (en) 2012-05-23 2016-03-15 Glasses.Com Inc. Systems and methods for adjusting a virtual try-on
US9311746B2 (en) 2012-05-23 2016-04-12 Glasses.Com Inc. Systems and methods for generating a 3-D model of a virtual try-on product
US9378584B2 (en) 2012-05-23 2016-06-28 Glasses.Com Inc. Systems and methods for rendering virtual try-on products
US9483853B2 (en) 2012-05-23 2016-11-01 Glasses.Com Inc. Systems and methods to display rendered images
US10147233B2 (en) 2012-05-23 2018-12-04 Glasses.Com Inc. Systems and methods for generating a 3-D model of a user for a virtual try-on product
US10481397B2 (en) 2013-07-26 2019-11-19 tooz technologies GmbH Spectacle lens and display device with such a spectacle lens
US9569669B2 (en) 2013-11-27 2017-02-14 International Business Machines Corporation Centralized video surveillance data in head mounted device

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Publication number Publication date
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