GB2393029A - Device to adapt any 2D display for stereoscopic viewing - Google Patents
Device to adapt any 2D display for stereoscopic viewing Download PDFInfo
- Publication number
- GB2393029A GB2393029A GB0215599A GB0215599A GB2393029A GB 2393029 A GB2393029 A GB 2393029A GB 0215599 A GB0215599 A GB 0215599A GB 0215599 A GB0215599 A GB 0215599A GB 2393029 A GB2393029 A GB 2393029A
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- GB
- United Kingdom
- Prior art keywords
- display
- stsr
- image
- viewed
- polarised
- Prior art date
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- 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
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- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Marketing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
Abstract
This device allows any 2D display to be converted for stereoscopic viewing with polarised glasses by the attachment of a Semi-Transparent/Semi-Reflective (STSR) surface mounted perpendicular to the display surface and such that it divides the display into two. The viewer looks through the STSR surface to see a combined image formed by the reflection of one part of the display overlaying the other part. When the light from the display is suitably polarised, the STSR surface also reverses the polarisation of the reflected image so that viewing the combined images with suitably polarised glasses can be used to view a stereoscopic image. The light from any 2D display can be suitably polarised by covering the display surface with a sheet of polarising material. Many liquid crystal display screens are already suitably polarised and in their case, no extra sheet is required thereby making the device very simple.
Description
2393029 1
Simple method for adapting any display for stereoscopic viewing For this method to work, the display to be used needs to provide an image which is polarised in only one direction so that when filters such as those found in standard stereoscopic polarising glasses are placed in front of the viewer's eyes, an image can only be seen in one eye. Many liquid crystal displays already provide images that are polarised in this way. Other displays can have a sheet of polarising material covering the screen surface to achieve this effect.
Once such a display has been obtained, an image needs to be provided for the second eye. This can be achieved by placing a Semi-Transparent/SemiReflective (STSR) surface such as a semi-
silvered mirror half way across the display and at right angles to it so that the display is divided in two. One half of the display shows the image for the first eye, the other half shows a mirrored view of the image for the second eye. When the viewer looks through the STSR surface at the display, the first image is seen due to the surface's transparency, and the second image is seen as a reflection. When aligned appropriately, both images are seen exactly superimposed.
To achieve the stereoscopic effect, the second image must not only be aligned on top of the first, but its light must be polarised in the opposite direction so that it is seen only in the second eye.
When 45 degree linear polarization is used, the standard used in most stereoscopic projection, the reflected second eye image automatically has its polarization reversed, caused by the optical properties of the mirror. This means that the optical system required to adapt any display for stereoscopic viewing is very simple and is illustrated in figures a & b.
Figure a. shows how the images for the first and second eye (depicted as the 1 and 2) are arranged on the display surface. In figure b. the addition of a STSR surface (shown as the horizontal line) divides the display and reflects the 2 so that to the viewer it appears to lie on top of the 1.
In figure c. the correct viewing position is shown. Note that a stereoscopic image can be viewed from either side of the STSR surface increasing the number of viewers who can see the images at the same time. However on one side of the surface, the images will appear back to front. I his may be acceptable if the subject matter is symmetrical; for example external views of most plants and animals. A screen or other mechanism may be added to prevent the viewer from seeing the original image which has not been processed by the STSR surface.
Figure d. shows the same optical arrangement in perspective. Note that this arrangement can be used for any aspect ratio of display, the display can be arranged in portrait or landscape format, and the display can be orientated at any angle as long as the polarization of the images lines up with the polarization of the filters placed in front of the viewer's eyes.
Claims (9)
1. A device which when attached to any 2D display, forms an image suitable for stereoscopic viewing by optically overlaying one area of the display onto another by utilising a Semi-
Transparent/Semi-reflective (STSR) surface mounted perpendicular to the display and dividing the display into two.
2. A device as claimed in claim 1 where one area of the display can be viewed directly through the STSR surface while another area of the display can be viewed as a reflection in the STSR surface.
3. A device as claimed in any preceding claim where when a pair of suitably orientated images is shown on the display with the first image on one side of the STSR surface and the second on the other side, they appear to the viewer as a single image when viewed through the attached STSR surface.
4. A device as claimed in any preceding claim where the light from the image generated by the display is linearly polarised either as a direct property of the display as is the case with many liquid crystal displays, or by covering the display with a sheet of polarising material.
5. A device as claimed in any preceding claim where the direction of the display's polarised light is such that when the display is viewed using standard 45 degree polarised 3D glasses, an image can only be seen with one eye until the device is attached.
6. A device as claimed in any preceding claim where due to the properties of the STSR surface and the orientation ofthe polarised light, the polarization of the reflected image's light is different from the polarization of the directly views image's light such that when viewed with the previously described 3D glasses, different images can be seen in each eye.
7. A device as claimed in any preceding claim where the images can be viewed through either side of the STSR surface and produce the stereoscopic effect.
8. A device as claimed in any preceding claim where the images to be seen as a reflection can be masked from direct viewing by the attachment of a screen or other mechanism which blocks the direct image from the viewer without blocking the reflected image.
9. A device suitable for stereoscopic viewing substantially as herein described above and illustrated in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0215599A GB2393029B (en) | 2002-07-05 | 2002-07-05 | Polarised display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0215599A GB2393029B (en) | 2002-07-05 | 2002-07-05 | Polarised display |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0215599D0 GB0215599D0 (en) | 2002-08-14 |
| GB2393029A true GB2393029A (en) | 2004-03-17 |
| GB2393029B GB2393029B (en) | 2005-11-16 |
Family
ID=9939917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0215599A Expired - Fee Related GB2393029B (en) | 2002-07-05 | 2002-07-05 | Polarised display |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2393029B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2066499A (en) * | 1979-12-01 | 1981-07-08 | Dainippon Screen Mfg | Image observation device |
| GB2331883A (en) * | 1997-11-26 | 1999-06-02 | Sharp Kk | Dual image viewing system |
| US20010022563A1 (en) * | 2000-03-10 | 2001-09-20 | Masaru Ishikawa | Apparatus for displaying a stereoscopic two-dimensional image and method therefor |
| GB2361796A (en) * | 2000-06-26 | 2001-10-31 | W M Sign Consultants Ltd | Multiple image illuminated sign |
| US20020030887A1 (en) * | 1999-01-11 | 2002-03-14 | Goro Hamagishi | Stereoscopic Display Without Using Eyeglasses |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5537144A (en) * | 1990-06-11 | 1996-07-16 | Revfo, Inc. | Electro-optical display system for visually displaying polarized spatially multiplexed images of 3-D objects for use in stereoscopically viewing the same with high image quality and resolution |
-
2002
- 2002-07-05 GB GB0215599A patent/GB2393029B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2066499A (en) * | 1979-12-01 | 1981-07-08 | Dainippon Screen Mfg | Image observation device |
| GB2331883A (en) * | 1997-11-26 | 1999-06-02 | Sharp Kk | Dual image viewing system |
| US20020030887A1 (en) * | 1999-01-11 | 2002-03-14 | Goro Hamagishi | Stereoscopic Display Without Using Eyeglasses |
| US20010022563A1 (en) * | 2000-03-10 | 2001-09-20 | Masaru Ishikawa | Apparatus for displaying a stereoscopic two-dimensional image and method therefor |
| GB2361796A (en) * | 2000-06-26 | 2001-10-31 | W M Sign Consultants Ltd | Multiple image illuminated sign |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2393029B (en) | 2005-11-16 |
| GB0215599D0 (en) | 2002-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20100705 |