WO2014132200A1 - A display device - Google Patents

A display device Download PDF

Info

Publication number
WO2014132200A1
WO2014132200A1 PCT/IB2014/059263 IB2014059263W WO2014132200A1 WO 2014132200 A1 WO2014132200 A1 WO 2014132200A1 IB 2014059263 W IB2014059263 W IB 2014059263W WO 2014132200 A1 WO2014132200 A1 WO 2014132200A1
Authority
WO
WIPO (PCT)
Prior art keywords
display
image
transparent
display device
illuminated
Prior art date
Application number
PCT/IB2014/059263
Other languages
French (fr)
Inventor
Alexander Martin BAROUTSOS
Original Assignee
Baroutsos Alexander Martin
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 Baroutsos Alexander Martin filed Critical Baroutsos Alexander Martin
Publication of WO2014132200A1 publication Critical patent/WO2014132200A1/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/40—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images giving the observer of a single two-dimensional [2D] image a perception of depth
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
    • G02B30/56—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels by projecting aerial or floating images

Definitions

  • This invention relates to a display device.
  • a display device including: transparent display means including a transparent display panel having an operative front side; illuminated display means including a substantially planar illuminated display disposed operatively above an image display area which is disposed in front of the front side of the transparent display panel; and a reflective screen which is located within the image display area at an acute angle relative to the illuminated display, the reflective screen being partially light reflective so as to reflect light from the illuminated display and partially light transmissive so as to allow a viewer to view the transparent display panel through the reflective screen.
  • the transparent display means may include a light source positioned at a rear side of the transparent display.
  • the reflective screen may be located within the image display area directly below the illuminated display at an angle of 45 ° relative to the illuminated display.
  • the reflective screen may have a reflective coating having a relatively high reflectivity on one side thereof and a reflective coating having a relatively low reflectivity on an opposite side thereof.
  • the reflective screen may comprise a beam splitter.
  • the illuminated display means may include a light source.
  • the illuminated display may be in the form of a liquid crystal display (LCD), a light box or the like.
  • the transparent display means and the illuminated display means may be positioned such that the transparent display panel and the illuminated display are disposed perpendicularly with respect to one another. More specifically, the transparent display panel and the illuminated display may be spatially arranged relative to one another such that images displayed thereon are aligned.
  • the display device may include a housing in which the transparent display panel and the illuminated display and reflective screen are housed.
  • the transparent display panel may be disposed in an upright orientation in which it defines a rear side of the image display area, with the illuminated display being disposed in a substantially horizontal orientation at a position which is horizontally aligned with the transparent display panel and which defines an upper side of the image display area.
  • the housing may include a transparent viewing panel which is disposed in an upright orientation opposite the transparent display panel and spaced therefrom and which defines a front side of the image display area of the display device.
  • the display device may include a processor for inverting the image displayed by the illuminated display so that the reflected illuminated display image correctly overlies and matches the image displayed by the transparent display panel.
  • the processor may be operable to calibrate the image displayed by the illuminated display in order to move and scale image content components independently of each other in order to align the image components with underlying components of the transparent display image.
  • Figure 1 shows a three-dimensional view of a display device in accordance with the invention
  • Figure 2 shows a side elevation of the display device of Figure 1 , illustrating the manner in which the images displayed by the transparent display panel and the illuminated display are combined;
  • Figure 3 shows a side elevation of the display device of Figure 1 , including a processor
  • Figure 4a shows an initial image displayed by the illuminated display of the display device of Figure 1 , as reflected by the beam splitter;
  • Figure 4b shows an initial image displayed by the transparent display panel of the display device of Figure 1 ;
  • Figure 4c shows a silhouetted image of the image shown in Figure 4b.
  • Figure 4d shows an image displayed by the display device to a viewer, which is a combination of the image shown in Figures 4a and 4c.
  • a display device in accordance with the invention is designated generally by the reference numeral 10.
  • the display device 10 comprises, broadly, transparent display means comprising a transparent display panel 12 for displaying a transparent image, illuminated display means comprising a flat screen LCD 14 for displaying an illuminated display image and a reflective screen in the form of a beam splitter 16.
  • the display device 10 includes a housing 18 in which the transparent display panel, the LCD 14 and the beam splitter 16 are housed.
  • the housing defines an internal space in which an image display area 20 is defined. More specifically, the housing has a front side 22, a rear side 24, an upper side 26 and a lower side 28.
  • the transparent display panel 12 is disposed in an upright orientation near the rear side of the housing and defines a rear side of the image display area 20.
  • the image displayed by the transparent display panel is displayed on a front side of the panel and faces forwards onto the image display area.
  • the LCD 14 is disposed in a substantially horizontal orientation wherein it is arranged perpendicularly with respect to the transparent display panel 12.
  • the LCD 14 is the same size or similar in size to the transparent display panel and is mounted to the housing such that its screen display faces downwards.
  • the reflective screen is located within the image display area directly below the LCD 14 at an angle a of 45 ° relative to the LCD. More specifically, the beam splitter has a reflective coating having a relatively high reflectivity on one side thereof and a reflective coating having a low reflectivity on an opposite side thereof so as to prevent double imaging.
  • the housing includes a transparent glass viewing panel 30 which is disposed in an upright orientation opposite the transparent display panel 12 at the front side of the housing.
  • the transparent viewing panel thus defines a front side of the image display area of the display device.
  • the display device includes a microprocessor 32 which is supported by the housing at the lower side 38 thereof.
  • the transparent display panel 12 and the LCD 14 are spatially arranged in the housing relatively to one another such that images displayed thereon are aligned.
  • a viewer positioned in front of the viewing panel 30 will view an image displayed by the transparent display panel 12 through the beam splitter 16, while an image displayed by the LCD 14 which is reflected by the beam splitter will appear to the viewer to be superimposed on the image displayed by the transparent display panel.
  • the microprocessor 32 is operable to invert the image displayed by the LCD 14 so that the image reflected by the beam splitter correctly overlies and matches the image displayed by the transparent display panel when viewed by a viewer.
  • the microprocessor is also operable to calibrate the image displayed by the LCD 14 in order to move and scale image content components independently of each other in order to align the image components with underlying components of the image displayed by the transparent display panel.
  • Figure 4a of the drawings an image displayed by the LCD 14 as reflected by the beam splitter, is shown.
  • the reflected image has background transparency but suffers from a number of drawbacks, including that although colours are bright, the colours are slightly transparent, black is lost to transparency and the image does not cast a shadow when backlit. This kind of image is known.
  • a silhouette is created of the transparent image shown in Figure 4b in which all colour, other than black is removed from the image.
  • the silhouetted image is displayed on the transparent display panel 12.
  • the image formed by the reflected image of the LCD 14 (as shown in Figure 4a) is superimposed on the silhouetted image displayed by the transparent display (as shown in Figure 4c).
  • the image so produced is the image which is displayed by the display device 10 and overcomes the drawbacks of the known types of images shown in Figures 4a and 4b in that the combined image as shown in Figure 4d has background transparency, blacks and whites remain fully opaque, colours retain full brightness and full opacity and the image casts a solid shadow when backlit.
  • the display device in accordance with the invention thus overcomes the abovementioned problems encountered when producing colour images on a transparent display.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

A display device (10) comprising a transparent display panel (12) for displaying a transparent image, a liquid crystal display (LCD) 14 for displaying an illuminated display image and a beam splitter (16). The display panel (12) is disposed upright at a rear side of a housing (18) while the LCD is disposed horizontally within the housing above an image display area (20), with its screen facing downwards. The beam splitter is located below the LCD at an angle of 45° relative to the LCD. A transparent viewing panel (30) is disposed at a front end of the housing which also houses a microprocessor (32). Images displayed by the display panel (12) and the LCD (14) are aligned such that an image displayed by the LCD reflected by the beam splitter appears to a viewer to be superimposed on the image displayed by the display panel (12). The microprocessor inverts the LCD image so that the LCD image correctly overlies the transparent image.

Description

A DISPLAY DEVICE
FIELD OF INVENTION This invention relates to a display device.
BACKGROUND OF INVENTION The creation of digital images seemingly suspended in space, is known. Such images suffer from a key drawback in that when producing colour images on a transparent display, either the black or white must be sacrificed to transparency, depending on the selected format. For example, in the case of an image of a human model, dark hair or clothes would also show up as translucent when black is the transparency key. In a situation where white is the transparency key, white components of the image such as the whites of the person's eyes, white clothing or the like would show up as translucent.
It is an object of the present invention to overcome the abovementioned shortcomings in the production of colour images on a transparent display. SUMMARY OF INVENTION
According to the invention there is provided a display device including: transparent display means including a transparent display panel having an operative front side; illuminated display means including a substantially planar illuminated display disposed operatively above an image display area which is disposed in front of the front side of the transparent display panel; and a reflective screen which is located within the image display area at an acute angle relative to the illuminated display, the reflective screen being partially light reflective so as to reflect light from the illuminated display and partially light transmissive so as to allow a viewer to view the transparent display panel through the reflective screen.
The transparent display means may include a light source positioned at a rear side of the transparent display. The reflective screen may be located within the image display area directly below the illuminated display at an angle of 45 ° relative to the illuminated display.
The reflective screen may have a reflective coating having a relatively high reflectivity on one side thereof and a reflective coating having a relatively low reflectivity on an opposite side thereof.
In a particular embodiment of the invention, the reflective screen may comprise a beam splitter. The illuminated display means may include a light source. As such, the illuminated display may be in the form of a liquid crystal display (LCD), a light box or the like. The transparent display means and the illuminated display means may be positioned such that the transparent display panel and the illuminated display are disposed perpendicularly with respect to one another. More specifically, the transparent display panel and the illuminated display may be spatially arranged relative to one another such that images displayed thereon are aligned.
The display device may include a housing in which the transparent display panel and the illuminated display and reflective screen are housed. The transparent display panel may be disposed in an upright orientation in which it defines a rear side of the image display area, with the illuminated display being disposed in a substantially horizontal orientation at a position which is horizontally aligned with the transparent display panel and which defines an upper side of the image display area. The housing may include a transparent viewing panel which is disposed in an upright orientation opposite the transparent display panel and spaced therefrom and which defines a front side of the image display area of the display device.
The image displayed by the illuminated display is reflected by the reflective screen as a mirror image. As such, the display device may include a processor for inverting the image displayed by the illuminated display so that the reflected illuminated display image correctly overlies and matches the image displayed by the transparent display panel. The processor may be operable to calibrate the image displayed by the illuminated display in order to move and scale image content components independently of each other in order to align the image components with underlying components of the transparent display image. BRIEF DESCRIPTION OF THE DRAWINGS
Further features of a display device in accordance with the invention, are described in more detail hereinafter by way of an example of the invention, with reference to and as illustrated in the accompanying diagrammatic drawings. In the drawings:
Figure 1 shows a three-dimensional view of a display device in accordance with the invention; Figure 2 shows a side elevation of the display device of Figure 1 , illustrating the manner in which the images displayed by the transparent display panel and the illuminated display are combined;
Figure 3 shows a side elevation of the display device of Figure 1 , including a processor;
Figure 4a shows an initial image displayed by the illuminated display of the display device of Figure 1 , as reflected by the beam splitter;
Figure 4b shows an initial image displayed by the transparent display panel of the display device of Figure 1 ;
Figure 4c shows a silhouetted image of the image shown in Figure 4b; and
Figure 4d shows an image displayed by the display device to a viewer, which is a combination of the image shown in Figures 4a and 4c.
DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to Figures 1 to 3 of the drawings, a display device in accordance with the invention, is designated generally by the reference numeral 10. The display device 10 comprises, broadly, transparent display means comprising a transparent display panel 12 for displaying a transparent image, illuminated display means comprising a flat screen LCD 14 for displaying an illuminated display image and a reflective screen in the form of a beam splitter 16.
The display device 10 includes a housing 18 in which the transparent display panel, the LCD 14 and the beam splitter 16 are housed. The housing defines an internal space in which an image display area 20 is defined. More specifically, the housing has a front side 22, a rear side 24, an upper side 26 and a lower side 28. The transparent display panel 12 is disposed in an upright orientation near the rear side of the housing and defines a rear side of the image display area 20. The image displayed by the transparent display panel is displayed on a front side of the panel and faces forwards onto the image display area. The LCD 14 is disposed in a substantially horizontal orientation wherein it is arranged perpendicularly with respect to the transparent display panel 12. The LCD 14 is the same size or similar in size to the transparent display panel and is mounted to the housing such that its screen display faces downwards.
The reflective screen is located within the image display area directly below the LCD 14 at an angle a of 45 ° relative to the LCD. More specifically, the beam splitter has a reflective coating having a relatively high reflectivity on one side thereof and a reflective coating having a low reflectivity on an opposite side thereof so as to prevent double imaging.
The housing includes a transparent glass viewing panel 30 which is disposed in an upright orientation opposite the transparent display panel 12 at the front side of the housing. The transparent viewing panel thus defines a front side of the image display area of the display device.
The display device includes a microprocessor 32 which is supported by the housing at the lower side 38 thereof. The transparent display panel 12 and the LCD 14 are spatially arranged in the housing relatively to one another such that images displayed thereon are aligned. In use, a viewer positioned in front of the viewing panel 30 will view an image displayed by the transparent display panel 12 through the beam splitter 16, while an image displayed by the LCD 14 which is reflected by the beam splitter will appear to the viewer to be superimposed on the image displayed by the transparent display panel.
The microprocessor 32 is operable to invert the image displayed by the LCD 14 so that the image reflected by the beam splitter correctly overlies and matches the image displayed by the transparent display panel when viewed by a viewer. The microprocessor is also operable to calibrate the image displayed by the LCD 14 in order to move and scale image content components independently of each other in order to align the image components with underlying components of the image displayed by the transparent display panel. With reference to Figure 4a of the drawings, an image displayed by the LCD 14 as reflected by the beam splitter, is shown. The reflected image has background transparency but suffers from a number of drawbacks, including that although colours are bright, the colours are slightly transparent, black is lost to transparency and the image does not cast a shadow when backlit. This kind of image is known.
With reference to Figure 4b, an unedited transparent image is shown. The image has background transparency but suffers from a number of drawbacks in that colours are saturated and slightly transparent, white is lost to transparency and the image casts a partial shadow where dark tones are displayed when the display is backlit. This kind of image is known.
With reference to Figure 4c, a silhouette is created of the transparent image shown in Figure 4b in which all colour, other than black is removed from the image. The silhouetted image is displayed on the transparent display panel 12. With reference to Figure 4d of the drawings, the image formed by the reflected image of the LCD 14 (as shown in Figure 4a) is superimposed on the silhouetted image displayed by the transparent display (as shown in Figure 4c). The image so produced is the image which is displayed by the display device 10 and overcomes the drawbacks of the known types of images shown in Figures 4a and 4b in that the combined image as shown in Figure 4d has background transparency, blacks and whites remain fully opaque, colours retain full brightness and full opacity and the image casts a solid shadow when backlit. The display device in accordance with the invention thus overcomes the abovementioned problems encountered when producing colour images on a transparent display.

Claims

A display device including: transparent display means including a transparent display panel having an operative front side; illuminated display means including a substantially planar illuminated display disposed operatively above an image display area which is disposed in front of the front side of the transparent display panel; and a reflective screen which is located within the image display area at an acute angle relative to the illuminated display, the reflective screen being partially light reflective so as to reflect light from the illuminated display and partially light transmissive so as to allow a viewer to view the transparent display panel through the reflective screen.
The display device as claimed in claim 1 , wherein the transparent display means includes a light source positioned at a rear side of the transparent display.
The display device as claimed in claim 2, wherein the reflective screen is located within the image display area directly below the illuminated display at an angle of 45 " relative to the illuminated display.
The display device as claimed in claim 3, wherein the reflective screen has a reflective coating having a relatively high reflectivity on one side thereof and a reflective coating having a relatively low reflectivity on an opposite side thereof.
The display device as claimed in claim 4, wherein the reflective screen comprises a beam splitter.
6. The display device as claimed in claim 1 , wherein the illuminated display means includes a light source.
7. The display device as claimed in claim 3, wherein the transparent display means and the illuminated display means are positioned such that the transparent display panel and the illuminated display are disposed perpendicularly with respect to one another.
8. The display device as claimed in claim 7, wherein the transparent display panel and the illuminated display are spatially arranged relative to one another such that images displayed thereon are aligned.
9. The display device as claimed in claim 8, wherein the transparent display panel is disposed in an upright orientation in which it defines a rear side of the image display area, with the illuminated display being disposed in a substantially horizontal orientation at a position which is horizontally aligned with the transparent display panel and which defines an upper side of the image display area.
10. The display device as claimed in claim 9, wherein the image displayed by the illuminated display is reflected, in use, by the reflective screen as a mirror image, the display device including a processor for inverting the image displayed by the illuminated display so that the reflected illuminated display image correctly overlies and matches the image displayed by the transparent display panel.
1 1 . The display device as claimed in claim 10, wherein the processor is operable to calibrate the image displayed by the illuminated display in order to move and scale image content components independently of each other in order to align the image components with underlying components of the transparent display image.
12. The display device as claimed in any one of claims 1 to 1 1 , wherein the display device includes a housing in which the transparent display panel and the illuminated display and reflective screen are housed.
13. The display device as claimed in claim 12, wherein the housing includes a transparent viewing panel which is disposed in an upright orientation opposite the transparent display panel and spaced therefrom and which defines a front side of the image display area of the display device.
PCT/IB2014/059263 2013-03-01 2014-02-26 A display device WO2014132200A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2013/01595 2013-03-01
ZA201301595 2013-03-01

Publications (1)

Publication Number Publication Date
WO2014132200A1 true WO2014132200A1 (en) 2014-09-04

Family

ID=51427575

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/059263 WO2014132200A1 (en) 2013-03-01 2014-02-26 A display device

Country Status (1)

Country Link
WO (1) WO2014132200A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105023531A (en) * 2015-08-06 2015-11-04 无锡羿飞科技有限公司 Interactive phantom imaging device and method
CN107633776A (en) * 2016-07-18 2018-01-26 崔海龙 Transparency LED display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19529936A1 (en) * 1994-08-05 1996-03-28 Central Research Lab Ltd Assembly for displaying image of object
JP2007041218A (en) * 2005-08-02 2007-02-15 Pioneer Electronic Corp Image display device
JP2007264448A (en) * 2006-03-29 2007-10-11 Casio Comput Co Ltd Display device
JP2011034086A (en) * 2007-05-23 2011-02-17 Kwangwoon Univ Research Inst For Industry Cooperation Three-dimensional video display method, system thereof and recording medium with three-dimensional video display program recorded therein

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19529936A1 (en) * 1994-08-05 1996-03-28 Central Research Lab Ltd Assembly for displaying image of object
JP2007041218A (en) * 2005-08-02 2007-02-15 Pioneer Electronic Corp Image display device
JP2007264448A (en) * 2006-03-29 2007-10-11 Casio Comput Co Ltd Display device
JP2011034086A (en) * 2007-05-23 2011-02-17 Kwangwoon Univ Research Inst For Industry Cooperation Three-dimensional video display method, system thereof and recording medium with three-dimensional video display program recorded therein

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105023531A (en) * 2015-08-06 2015-11-04 无锡羿飞科技有限公司 Interactive phantom imaging device and method
CN107633776A (en) * 2016-07-18 2018-01-26 崔海龙 Transparency LED display device

Similar Documents

Publication Publication Date Title
JP6538174B2 (en) Focused attention area displaying virtualized three-dimensional object projected by multilayer display system
KR101174550B1 (en) two-way mirror screen system
JP2012250609A (en) Vehicle instrument
TW200732756A (en) Liquid crystal display device
CN210670388U (en) Three-dimensional display screen
WO2014132200A1 (en) A display device
CN104960422A (en) 3D display structure of motormeter
CN201562078U (en) Imaging device for stereoscopic image
US3109063A (en) Cathode ray tube display apparatus
US10416465B2 (en) Display device employing a virtual plane overlaying mechanical indicia
CN216139832U (en) Double TFT screen motormeter dish and car
JP2006105681A (en) Display
JP4905754B2 (en) Display device
JPH10213460A (en) Black face meter
TWM512147U (en) Display device
CN110750000A (en) Three-dimensional display screen
JP2548911Y2 (en) Transmission illumination type display panel
JP2019128280A (en) Display device for vehicle
CN210038396U (en) Negative display liquid crystal screen with high contrast and high brightness
JP6116265B2 (en) Polarized glasses trial display device
JP3188616U (en) Double image prevention car head-up display
JP2006058752A (en) Display device
JP2002219969A (en) Virtual image display meter
GB2412806A (en) Temporarily hidden display images
JP2002213999A (en) Virtual image display type meter

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14757017

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14757017

Country of ref document: EP

Kind code of ref document: A1