EP1151430A1 - Dispositif d'affichage - Google Patents
Dispositif d'affichageInfo
- Publication number
- EP1151430A1 EP1151430A1 EP00902799A EP00902799A EP1151430A1 EP 1151430 A1 EP1151430 A1 EP 1151430A1 EP 00902799 A EP00902799 A EP 00902799A EP 00902799 A EP00902799 A EP 00902799A EP 1151430 A1 EP1151430 A1 EP 1151430A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- prism
- display device
- face
- base
- providing means
- 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
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/14—Advertising or display means not otherwise provided for using special optical effects displaying different signs depending upon the view-point of the observer
Definitions
- the present information relates to a display device. More particularly, but not exclusively, the invention relates to a display device for displaying a plurality of images.
- the word 'image' is used very broadly and includes anything that an observer might wish to view, for whatever reason.
- the expression covers aspects of real articles, such as clock faces, as well as representations, such as photographs or pictures.
- an image within the context of this document may have it's appeal in it ' s aesthetic qualities, it's informational content or a combination of the two. What is more, such an image may be static or moving.
- a display device If a display device is to display an image effectively, the image must be clearly visible from the intended observer's viewpoint. Hence, the image must appear suitably large at that viewpoint. If two or more images are to be observed from substantially the same viewpoint, then each must fulfil the same requirement. In certain circumstances this has caused problems - generally where space is limited and the respective sizes of a plurality of images should not be reduced to the extent necessary for each to be accommodated. In certain conventional arrangements, this has inevitably led to compromises which have resulted in either the clarity of the images being compromised as a consequence of size reduction, or the omission of one or more images.
- the present invention sets out to provide a display device for displaying a plurality of images, to an observer located at a viewpoint, which has a relatively simple structure , is inexpensive to manufacture and which can display a wide variety of different types of images.
- the invention provides a display device comprising first image providing means and second image providing means and a prism; wherein the said first image providing means is disposed in a region adjacent a first face of the prism and the said second image providing means is disposed in a region adjacent a second face of the prism; the device being adapted to display an image provided by the said first image providing means in a third face of the prism; and adapted to display an image provided by the said second image providing means in the said third face of the prism; the arrangement being such that an observer may view the said first image providing means and the said second image providing means through substantially the same part of the said third prism face by viewing the said third prism face from two different .angles.
- Such an arrangement enables a display device according to the invention to display a plurality of images which an observer may view with only a slight shift in viewing angle (and no change in viewpoint).
- the observer can view either of the images at full size, at will, and without having to operate any controls.
- the prism is a right angle prism, and the said first face of the prism is adjacent the right angle and the said second face of the prism is the hypotenuse face.
- the display device may further comprise a base, the said base supporting the said prism by a portion thereof situated adjacent the said first face of the prism or by the said first face of the prism itself.
- the base may accommodate an instrument for providing a reading; the said instrument defining the said first image providing means.
- the instrument may be a clock, thermometer, barometer, or calculator.
- the base may be provided with control means for controlling the instrument without removing it from the base.
- the control means may take the form of a keypad situated on an outer surface of the base.
- the base may comprise a recess for receiving a portion of the said prism.
- the device may further comprise support means for supporting the said prism by a portion thereof situated adjacent the said second face of the prism or by the said second face of the prism itself.
- the said support means is in the form of a plate.
- the plate comprises a recess for accommodating the said second image providing means.
- the plate may be slid relative to the prism, so as to allow access to the said recess.
- the movement of the plate is restricted, so as to ensure that the plate maintains its support for the prism during the course thereof.
- the device may include other types of prism, rather than a right-angle prism.
- the prism may be a porro prism, a dove prism, an Amici prism, a pentaprism or a rhomboid prism.
- FIG. 1 is a wire-frame view of a back-plate and base of a display device according to a first embodiment of the invention
- Figure 2 is a perspective view of the complete display device of Figure 1 ;
- Figure 3 is a view of a back-plate of the display device of Figures 1 and 2;
- Figure 4 is a cross-sectional view of the display device of Figures 1 to 3;
- Figures 5 to 7 are perspective views of three further embodiments of the invention.
- a first embodiment of a display device 2 comprises a base 4, a right-angle prism 6 and a back-plate 8.
- the base 4 has a front face 16, a seat face 18 and a bottom face 20. It also comprises two substantially parallel side faces 22.
- the seat face 18 of the base 4 is provided with a rectangular recess 19 that is essentially defined by an upstanding lip 21.
- the recess 19 is configured to accommodate one of the right-angle faces 26 of the prism 6, which is provided with a slightly rebated edge 7, in order to allow it to fit comfortably within the recess 19.
- the base 4 is also provided with a clock recess 30.
- An access bore 31 opens into the rear of the clock recess 30 and extends from the bottom face 20 of the base 4.
- a clock 9 is housed within the clock recess 30 and, therefore, sits underneath the right angle face 26 of the prism 6 that is seated within the prism recess 19.
- Conventional means (not shown) for adjusting the clock 9 are provided on its rear surface and these can be accessed from the bottom face 20 of the base 4, via the access bore 31, in order to adjust the clock 9 as necessary.
- the clock 9 is a reverse-readout clock, that is to say one in which the hands move anti-clockwise and in which the face is a mirror-image of a traditional clock-face.
- the overall shape of the base 4 is such as to carry-through the configuration of the prism 6 and, when the base 4, prism 6 and back-plate 8 are assembled together, as shown in Figure 2, the overall shape of the display device 2 is essentially prismatic in total.
- the base 4 provides support for the prism 6 and can accommodate the clock 9 (or some other instrument or image) the base 4 may have any other shape that is desired.
- the back-plate 8 is secured to the base 4 by means of a pair of sprung countersunk pins 14. These pins 14 engage with slots 10 provided at the lower end of the back-plate 8.
- the back-plate 8 is also provided with an overhanging lip 1 1, which extends along its top-edge.
- the back-plate 8 by virtue of being secured to the base 4 in this manner, effectively holds the prism 6 in place within the display device 2.
- the overhanging lip 11 provides extra security in this respect.
- the back-plate 8 also provides protection for the prism 6.
- the back-plate 8 is provided with a picture recess 32 on its side which faces the prism 6 in the assembled structure.
- the back-plate 8 can be slid to one side, so that a picture, photograph or some other basically laminar object can be fitted into the picture recess 32, so that when the back-plate 8 is returned to the position shown in Figure 2, it is sandwiched between the back-plate 8 and the hypotenuse face 24 of the prism 6.
- other mechanisms may be provided for inserting a picture or the like between the back-plate 8 and the prism 6, but the described arrangement has the advantage of keeping the prism 6 securely in place throughout the whole operation.
- the thus assembled display device 2 operates as follows.
- the clock face is internally reflected by the hypotenuse face 24 of the prism and can be viewed if the line of sight of the observer is at greater than an angle ⁇ c to the normal to the hypotenuse face 24.
- ⁇ c is the critical angle for light incident from the clock face to undergo total internal reflection at the glass/air boundary (see Fig. 4).
- the critical angle ⁇ c is determined as follows: ⁇ c -.sin " ' (n 2 /nj) where n is the refractive index of air (for most purposes this can be taken as equal to 1) and ni is the refractive index of the glass from which the prism is made.
- ⁇ c will vary for different types of glass, although in most cases it will be around 40°. This internal reflection has the effect of reversing the image of the clock face, which therefore appears as a normal clock face to the observer.
- the reflection of the clock face is initially combined with that of the object behind the hypotenuse face 24 and, as the angle is reduced still further (to about 20°), the reflection of the clock face becomes secondary to the object behind the hypotenuse face 24 and the image of that object effectively becomes primary.
- the image behind the hypotenuse face 24 becomes visible instead of the clock face at a normal angle of incidence.
- the above embodiment merely serves to show the principle behind the invention. Many other static or moving images could be substituted for that of the clock face. Naturally, pictures or photographs could be used. However, suitable images could also be provided by a calendar, a thermometer, a barometer, a calculator display or some other instrument read-out. The same can be said of the images located adjacent the hypotenuse face 24. Additionally, the back-plate could be omitted and the hypotenuse face 24 of the prism 6 could be printed with an image, or some larger object could be positioned adjacent the hypotenuse face 24.
- the base may be made of a wide variety of suitable materials. It may also include other features on its front face 16, or its side face 22. For example, it might include a calculator key pad; in such a case, the calculator display could be located in the clock recess 30 in place of the clock. The display would then be read through the prism 6. Alternatively, the base 4 might include a pen holder or other desk accessory. A company name or personal logo could be printed on the base 4 or be situated in either the clock recess or the picture recess.
- the prism may be formed from glass, Perspex, acrylic or other transparent or translucent materials. It may be plain or have a clock face located on its front right angle surface 28.
- Figure 5 shows an embodiment similar to the embodiment of Figures 1 to 4, but in this case, the back-plate is omitted. Due to the omission of the back-plate 8, the prism 6 is affixed to the base 4 by an adhesive.
- Figure 6 shows a display device generally similar to that shown in Figure 5, but in this case the overall design is curved and the prism has an elliptical hypotenuse face 24 and a circular right-angle face 26 adjacent the base 4.
- Figure 7 shows an arrangement in which the right-angled prism is replaced by an elongate prism 6 which is effectively squared off at one end, and has the form of a rhomboid prism at the other.
- one of the images (once again, a clock in this example) is situated adjacent the squared end, and reflects off the inclined face, which corresponds with the hypotenuse face 24 of the previous examples. Any further image to be used in conjunction with the image of the clock will be positioned upon the rear of the inclined face.
Landscapes
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Marketing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Dispositif d'affichage (2) comprenant des premiers moyens (9) de production d'image, des deuxièmes moyens de production d'image et un prisme (6). Les premiers moyens de production d'image sont placés dans une zone contiguë à une première face (26) du prisme (6) et lesdits deuxièmes moyens de production d'image sont placés dans une zone contiguë à une deuxième face (24) du prisme (6). Ce dispositif (2) est conçu pour afficher une image produite par lesdits premiers moyens (9) de production d'image dans une troisième face (28) du prisme (6), ainsi que pour afficher une image produite par lesdits deuxièmes moyens de production d'image dans ladite troisième face (28) du prisme (6). Ce dispositif est conçu de telle façon qu'un observateur peut visualiser lesdits premiers moyens (9) de production d'image et lesdits deuxièmes moyens de production d'image à travers sensiblement la même partie de ladite troisième face (28) du prisme par visualisation de ladite troisième face (28) depuis deux angles différents.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9903103A GB2347003A (en) | 1999-02-11 | 1999-02-11 | Prismatic display device |
GB9903103 | 1999-02-11 | ||
PCT/GB2000/000468 WO2000048167A1 (fr) | 1999-02-11 | 2000-02-11 | Dispositif d'affichage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1151430A1 true EP1151430A1 (fr) | 2001-11-07 |
Family
ID=10847560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00902799A Ceased EP1151430A1 (fr) | 1999-02-11 | 2000-02-11 | Dispositif d'affichage |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1151430A1 (fr) |
AU (1) | AU2453800A (fr) |
GB (1) | GB2347003A (fr) |
WO (1) | WO2000048167A1 (fr) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7439683B2 (en) | 2003-05-21 | 2008-10-21 | Pure Depth Limited | Backlighting system for display screen |
US7619585B2 (en) | 2001-11-09 | 2009-11-17 | Puredepth Limited | Depth fused display |
US7724208B1 (en) | 1999-08-19 | 2010-05-25 | Puredepth Limited | Control of depth movement for visual display with layered screens |
US7730413B1 (en) | 1999-08-19 | 2010-06-01 | Puredepth Limited | Display method for multiple layered screens |
US7742239B2 (en) | 2002-03-17 | 2010-06-22 | Puredepth Limited | Method to control point spread function of an image |
US7742124B2 (en) | 2001-04-20 | 2010-06-22 | Puredepth Limited | Optical retarder |
US8120547B2 (en) | 2001-05-01 | 2012-02-21 | Puredepth Limited | Information display |
US8149353B2 (en) | 2001-10-11 | 2012-04-03 | Puredepth Limited | Visual display unit illumination |
US8154691B2 (en) | 2000-11-17 | 2012-04-10 | Pure Depth Limited | Altering surfaces of display screens |
US8154473B2 (en) | 2003-05-16 | 2012-04-10 | Pure Depth Limited | Display control system |
US8416150B2 (en) | 2007-08-22 | 2013-04-09 | Igt | Method and system for determining a position for an interstital diffuser for use in a multi-layer display |
US8416149B2 (en) | 2002-06-25 | 2013-04-09 | Pure Depth Limited | Enhanced viewing experience of a display through localised dynamic control of background lighting level |
US8432411B2 (en) | 2007-05-18 | 2013-04-30 | Pure Depth Limited | Method and system for improving display quality of a multi-component display |
US8436873B2 (en) | 2005-10-05 | 2013-05-07 | Pure Depth Limited | Method of manipulating visibility of images on a volumetric display |
US8928682B2 (en) | 2009-07-07 | 2015-01-06 | Pure Depth Limited | Method and system of processing images for improved display |
US9137525B2 (en) | 2002-07-15 | 2015-09-15 | Pure Depth Limited | Multilayer video screen |
US9524700B2 (en) | 2009-05-14 | 2016-12-20 | Pure Depth Limited | Method and system for displaying images of various formats on a single display |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NZ521505A (en) | 2002-09-20 | 2005-05-27 | Deep Video Imaging Ltd | Multi-view display |
ES2285938B1 (es) * | 2006-05-11 | 2008-08-16 | Damian Vidal Mira | Calendario lenticular. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1266608A (fr) * | 1969-03-17 | 1972-03-15 | ||
US4268985A (en) * | 1978-06-05 | 1981-05-26 | Lecznar Joseph F | Desk name plate |
US4885856A (en) * | 1987-11-16 | 1989-12-12 | Panel Graphics, U.S.A., Inc. | Optical prism display device |
DE4002819C1 (en) * | 1990-01-31 | 1991-06-13 | D. Swarovski & Co., Wattens, At | Decorative glass body for object viewing - has object support base and inclined intermediate side face between base and viewing face |
-
1999
- 1999-02-11 GB GB9903103A patent/GB2347003A/en not_active Withdrawn
-
2000
- 2000-02-11 WO PCT/GB2000/000468 patent/WO2000048167A1/fr not_active Application Discontinuation
- 2000-02-11 EP EP00902799A patent/EP1151430A1/fr not_active Ceased
- 2000-02-11 AU AU24538/00A patent/AU2453800A/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO0048167A1 * |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8179338B2 (en) | 1999-08-19 | 2012-05-15 | Igt | Method and system for displaying information |
US7724208B1 (en) | 1999-08-19 | 2010-05-25 | Puredepth Limited | Control of depth movement for visual display with layered screens |
US7730413B1 (en) | 1999-08-19 | 2010-06-01 | Puredepth Limited | Display method for multiple layered screens |
US8154691B2 (en) | 2000-11-17 | 2012-04-10 | Pure Depth Limited | Altering surfaces of display screens |
US7742124B2 (en) | 2001-04-20 | 2010-06-22 | Puredepth Limited | Optical retarder |
US8120547B2 (en) | 2001-05-01 | 2012-02-21 | Puredepth Limited | Information display |
US8711058B2 (en) | 2001-05-01 | 2014-04-29 | Puredepth Limited | Information display |
US8687149B2 (en) | 2001-10-11 | 2014-04-01 | Pure Depth Limited | Visual display unit illumination |
US8149353B2 (en) | 2001-10-11 | 2012-04-03 | Puredepth Limited | Visual display unit illumination |
US9721378B2 (en) | 2001-10-11 | 2017-08-01 | Pure Depth Limited | Display interposing a physical object within a three-dimensional volumetric space |
US10262450B2 (en) | 2001-10-11 | 2019-04-16 | Pure Depth Limited | Display interposing a physical object within a three-dimensional volumetric space |
US7619585B2 (en) | 2001-11-09 | 2009-11-17 | Puredepth Limited | Depth fused display |
US7742239B2 (en) | 2002-03-17 | 2010-06-22 | Puredepth Limited | Method to control point spread function of an image |
US8416149B2 (en) | 2002-06-25 | 2013-04-09 | Pure Depth Limited | Enhanced viewing experience of a display through localised dynamic control of background lighting level |
US9137525B2 (en) | 2002-07-15 | 2015-09-15 | Pure Depth Limited | Multilayer video screen |
US8154473B2 (en) | 2003-05-16 | 2012-04-10 | Pure Depth Limited | Display control system |
US7439683B2 (en) | 2003-05-21 | 2008-10-21 | Pure Depth Limited | Backlighting system for display screen |
US8436873B2 (en) | 2005-10-05 | 2013-05-07 | Pure Depth Limited | Method of manipulating visibility of images on a volumetric display |
US8432411B2 (en) | 2007-05-18 | 2013-04-30 | Pure Depth Limited | Method and system for improving display quality of a multi-component display |
US8416150B2 (en) | 2007-08-22 | 2013-04-09 | Igt | Method and system for determining a position for an interstital diffuser for use in a multi-layer display |
US9524700B2 (en) | 2009-05-14 | 2016-12-20 | Pure Depth Limited | Method and system for displaying images of various formats on a single display |
US8928682B2 (en) | 2009-07-07 | 2015-01-06 | Pure Depth Limited | Method and system of processing images for improved display |
Also Published As
Publication number | Publication date |
---|---|
GB2347003A (en) | 2000-08-23 |
AU2453800A (en) | 2000-08-29 |
GB9903103D0 (en) | 1999-03-31 |
WO2000048167A1 (fr) | 2000-08-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1151430A1 (fr) | Dispositif d'affichage | |
US9235056B2 (en) | Three-dimensional image display device | |
US6519812B2 (en) | Hinge structure | |
EP0762722B1 (fr) | Dispositif terminal avec capteur d'image encastré | |
EP1513047A2 (fr) | Dispositif électronique | |
US8388147B2 (en) | Screen assembly and rear-projection type graphic display device | |
CA2601910C (fr) | Dispositif presentant un couvercle coulissant | |
US20150207907A1 (en) | Housing | |
US7414830B2 (en) | Device having a slidable cover | |
TW314608B (fr) | ||
US4268985A (en) | Desk name plate | |
JPH07505723A (ja) | ビューアーアッセンブリ及びそれに用いられる観察可能な材料の改良 | |
GB2239974A (en) | A business card | |
US6648038B2 (en) | Wallet card reminder | |
US5465832A (en) | Card reader case | |
US20030192219A1 (en) | Pictorial display | |
EP1197831A2 (fr) | Appareil de traitement de données | |
KR200206448Y1 (ko) | 탁상용 달력 | |
US5601187A (en) | Duplicate notepaper case | |
JP5097185B2 (ja) | 携帯型電子機器 | |
CN218471060U (zh) | 医用显示装置 | |
KR200219939Y1 (ko) | 주문형 카렌다 | |
JPS63186208A (ja) | 拡大鏡 | |
JP5199211B2 (ja) | 携帯型電子機器 | |
JPH10181750A (ja) | レンズ付き通帳類収納ケース |
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 |
|
17P | Request for examination filed |
Effective date: 20010911 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20020426 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 20021021 |