EP0535401A1 - Affichage compact d'image virtuel - Google Patents
Affichage compact d'image virtuel Download PDFInfo
- Publication number
- EP0535401A1 EP0535401A1 EP92115263A EP92115263A EP0535401A1 EP 0535401 A1 EP0535401 A1 EP 0535401A1 EP 92115263 A EP92115263 A EP 92115263A EP 92115263 A EP92115263 A EP 92115263A EP 0535401 A1 EP0535401 A1 EP 0535401A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- virtual image
- image
- bundle
- image display
- lens system
- 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- Withdrawn
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/305—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being the ends of optical fibres
Definitions
- the present invention pertains, generally, to virtual image displays and more particularly to relatively high magnification compact virtual image displays.
- Virtual image displays are becoming very popular in the present world of portable and very small electronic devices, such as pagers, cordless and cellular telephones, credit card calculators and palm-size computers.
- a virtual image display uses a lens magnifier to create a large virtual image from a small real image. As the real image becomes smaller and it is desired to make the virtual image larger, higher magnification lenses are required. However, higher magnification lenses in a virtual image display limit the field of view, eye relief and the working distance of the lens, which means the lens system must be very small and very close to the eye.
- power of ten magnification (10x) lenses are relatively easy to produce with a reasonable eye relief, but magnification above 10x begins to restrict the packaging options.
- a compact virtual image display having a viewing aperture
- the display including apparatus for providing a real image, a bundle of coherent fibre optics defining a first and a second surface and tapered to provide a predetermined amount of magnification from the first surface to the second surface, the bundle of coherent fibre optics being mounted with the first surface positioned in juxtaposition to the real image provided by the apparatus, and a lens system mounted adjacent the bundle of coherent fibre optics to receive an image from the second surface thereof, further magnify the image and produce a virtual image at the viewing aperture.
- Display 10 includes apparatus 12 for providing a real image on a surface 13.
- a coherent bundle 14 of optical fibres has a first surface 15 positioned adjacent the surface 13 of apparatus 12 and a second surface 16 defined at the opposite end of bundle 14.
- An optical system, represented by lens 18, is positioned in spaced relation to surface 16 of bundle 14 and, in cooperation with bundle 14, produces a virtual image viewable by an eye 20 spaced from an aperture defined by lens 18.
- Apparatus 12 is illustrated in more detail in FIG. 2 and includes, for example, semiconductor electronics such as a light emitting diode (LED) array 25 driven by data processing circuits 27.
- Data processing circuits 27 include, for example, logic and switching circuit arrays for controlling each LED in LED array 25.
- Data processing circuits 27 include, in addition to or instead of the logic and switching arrays, a microprocessor or similar circuitry for processing input signals to produce a desired real image on a device such as LED array 25.
- LED array 25 is utilized because of the extremely small size that can be achieved and because of the simplicity of construction and operation. It will of course be understood that other image generating devices may be utilized, including but not limited to lasers, LCDs, CRTs, etc.
- FIG. 3 a plan view of LED array 25 is illustrated in which the LEDs are formed in a regular pattern of rows and columns on a single semiconductor chip 30. By addressing specific LEDs by row and column in a well known manner, the specific LEDs are energized to produce a real image. Digital or analog data is received at input terminal 28 and converted by data processing circuits 27 into signals capable of energizing selected LEDs to generate the predetermined real image.
- LED array 25 and semiconductor chip 30 are greatly enlarged in the FIGS.
- the actual size of semiconductor chip 30 is on the order of a few milli-inches along each side with each LED being on the order of as little as one micron on a side.
- As the semiconductor technology reduces the size of the chip greater magnification and smaller lens systems are required. Reducing the size of the lenses while increasing the magnification results in greatly limiting the field of view, substantially reducing eye relief and reducing the working distance of the lens system.
- Bundle 14 is tapered along the length thereof so that the image at surface 16 is larger than the real image at surface 15.
- the taper in the present embodiment provides an image at surface 16 which is twice as large as the image at surface 15, which is equivalent to a power of two magnification. It will be understood by those skilled in the art that additional magnification (taper) may be included if desired.
- the lens system represented schematically by lens 18, is mounted in spaced relation from surface 16 of bundle 14 so as to receive the image from surface 16, magnify it an additional predetermined amount and create the aperture within which the virtual image is viewed.
- lens 18 magnifies the image another ten times (10x) so that the real image from LED array 25 is magnified a total of twenty times.
- the lens system may be adjustable for focus and additional magnification, if desired, or may be fixed in a housing for simplicity. Because the image received by lens 18 from bundle 14 is much larger than LED array 25, the lens system does not provide the entire magnification and, therefore, is constructed larger and with less magnification. Because of this larger size, the lens system has a larger field of view and a greater working distance.
- Eye relief is the distance that eye 20 can be positioned from lens system 18 (the viewing aperture) and still properly view the image, which distance is denoted by “d" in FIG. 1. Because of the size of lens 18, eye relief, or the distance d, is sufficient to provide comfortable viewing and in the present embodiment is great enough to allow a viewer to wear normal eyeglasses, if desired.
- a greatly improved compact virtual image display is disclosed, which is used with an extremely small LED array, semiconductor chip display device, or any other suitable image source.
- the compact virtual display provides a predetermined amount of magnification without reducing the eye relief or the working distance of the lens system.
- the electronics provided as a portion of the compact virtual image display allows a variety of very small real images to be generated, which can be easily and comfortably viewed by an operator.
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Led Device Packages (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76717991A | 1991-09-30 | 1991-09-30 | |
US767179 | 1991-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0535401A1 true EP0535401A1 (fr) | 1993-04-07 |
Family
ID=25078731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92115263A Withdrawn EP0535401A1 (fr) | 1991-09-30 | 1992-09-07 | Affichage compact d'image virtuel |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0535401A1 (fr) |
JP (1) | JP2661480B2 (fr) |
CN (1) | CN1028385C (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0831420A2 (fr) * | 1996-09-03 | 1998-03-25 | Motorola, Inc. | Carte à puce avec écran de visualisation |
US6073034A (en) * | 1996-10-31 | 2000-06-06 | Kopin Corporation | Wireless telephone display system |
US6088068A (en) * | 1995-12-21 | 2000-07-11 | Nokia Mobil Phones, Ltd. | Hand-held transmissive LCD having a separation between touch screen and LC panel |
US6421031B1 (en) | 1993-10-22 | 2002-07-16 | Peter A. Ronzani | Camera display system |
US6545654B2 (en) | 1996-10-31 | 2003-04-08 | Kopin Corporation | Microdisplay for portable communication systems |
US6677936B2 (en) | 1996-10-31 | 2004-01-13 | Kopin Corporation | Color display system for a camera |
EP3583352B1 (fr) * | 2017-02-14 | 2023-12-27 | Zumtobel Lighting GmbH | Lampe et procédé pour en commander la caractéristique de rayonnement |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102331624B (zh) * | 2011-10-24 | 2013-04-17 | 陕西微景虚拟科技技术有限公司 | 一种填充叠加式光学放大引擎 |
CN103176281B (zh) * | 2011-12-22 | 2015-04-15 | 福州高意通讯有限公司 | 一种高功率激光空间滤波器的制作方法 |
CN103309038B (zh) * | 2012-03-12 | 2016-12-14 | 联想(北京)有限公司 | 手持电子设备和显示方法 |
EP2760122A1 (fr) * | 2013-01-24 | 2014-07-30 | DET International Holding Limited | Convertisseur multi-cellules pont complet en cascade avec equilibrage transformateur de puissance entre les cellules dans chaque niveau de tension |
CN109584731B (zh) * | 2018-12-18 | 2021-07-06 | 惠州市华星光电技术有限公司 | 拼接显示屏 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2437580B1 (de) * | 1974-08-05 | 1975-11-13 | Jenaer Glaswerk Schott & Gen., 6500 Mainz | Signalanzeigevorrichtung zur Ausstrahlung von Lichtzeichen |
US4465347A (en) * | 1982-11-15 | 1984-08-14 | The United States Of America As Represented By The Secretary Of The Air Force | Helmet mounted telescope |
DE3434355A1 (de) * | 1984-09-19 | 1986-06-12 | Nauschütt, Jürgen, 3000 Hannover | Leuchtanzeigetafel, gebildet aus einer vielzahl von leuchtelementen, die aus den enden von lichtleitern bestehen |
FR2626700A1 (fr) * | 1988-02-03 | 1989-08-04 | Castel Francois Du | Ecran d'affichage de tres grandes dimensions |
EP0425371A1 (fr) * | 1989-10-26 | 1991-05-02 | Commissariat A L'energie Atomique | Procédé de fabrication d'un module agrandisseur d'images pour panneaux lumineux à fibres optiques |
-
1992
- 1992-08-06 CN CN92109020.XA patent/CN1028385C/zh not_active Expired - Fee Related
- 1992-09-07 EP EP92115263A patent/EP0535401A1/fr not_active Withdrawn
- 1992-09-17 JP JP4272473A patent/JP2661480B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2437580B1 (de) * | 1974-08-05 | 1975-11-13 | Jenaer Glaswerk Schott & Gen., 6500 Mainz | Signalanzeigevorrichtung zur Ausstrahlung von Lichtzeichen |
US4465347A (en) * | 1982-11-15 | 1984-08-14 | The United States Of America As Represented By The Secretary Of The Air Force | Helmet mounted telescope |
DE3434355A1 (de) * | 1984-09-19 | 1986-06-12 | Nauschütt, Jürgen, 3000 Hannover | Leuchtanzeigetafel, gebildet aus einer vielzahl von leuchtelementen, die aus den enden von lichtleitern bestehen |
FR2626700A1 (fr) * | 1988-02-03 | 1989-08-04 | Castel Francois Du | Ecran d'affichage de tres grandes dimensions |
EP0425371A1 (fr) * | 1989-10-26 | 1991-05-02 | Commissariat A L'energie Atomique | Procédé de fabrication d'un module agrandisseur d'images pour panneaux lumineux à fibres optiques |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6421031B1 (en) | 1993-10-22 | 2002-07-16 | Peter A. Ronzani | Camera display system |
US6683584B2 (en) | 1993-10-22 | 2004-01-27 | Kopin Corporation | Camera display system |
US6088068A (en) * | 1995-12-21 | 2000-07-11 | Nokia Mobil Phones, Ltd. | Hand-held transmissive LCD having a separation between touch screen and LC panel |
EP0831420A2 (fr) * | 1996-09-03 | 1998-03-25 | Motorola, Inc. | Carte à puce avec écran de visualisation |
EP0831420A3 (fr) * | 1996-09-03 | 1998-12-09 | Motorola, Inc. | Carte à puce avec écran de visualisation |
US6073034A (en) * | 1996-10-31 | 2000-06-06 | Kopin Corporation | Wireless telephone display system |
US6486862B1 (en) | 1996-10-31 | 2002-11-26 | Kopin Corporation | Card reader display system |
US6545654B2 (en) | 1996-10-31 | 2003-04-08 | Kopin Corporation | Microdisplay for portable communication systems |
US6677936B2 (en) | 1996-10-31 | 2004-01-13 | Kopin Corporation | Color display system for a camera |
EP3583352B1 (fr) * | 2017-02-14 | 2023-12-27 | Zumtobel Lighting GmbH | Lampe et procédé pour en commander la caractéristique de rayonnement |
Also Published As
Publication number | Publication date |
---|---|
JPH05210066A (ja) | 1993-08-20 |
CN1071516A (zh) | 1993-04-28 |
JP2661480B2 (ja) | 1997-10-08 |
CN1028385C (zh) | 1995-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB |
|
17P | Request for examination filed |
Effective date: 19931001 |
|
17Q | First examination report despatched |
Effective date: 19950330 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19950810 |