EP0855121A1 - Hocheffiziente projektionsanzeige mit polarisierendem dünnfilm-strahlteiler - Google Patents
Hocheffiziente projektionsanzeige mit polarisierendem dünnfilm-strahlteilerInfo
- Publication number
- EP0855121A1 EP0855121A1 EP97935403A EP97935403A EP0855121A1 EP 0855121 A1 EP0855121 A1 EP 0855121A1 EP 97935403 A EP97935403 A EP 97935403A EP 97935403 A EP97935403 A EP 97935403A EP 0855121 A1 EP0855121 A1 EP 0855121A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- thin film
- polarized
- display system
- projection display
- 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- Withdrawn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
- 239000010409 thin film Substances 0.000 title claims abstract description 207
- 239000000758 substrate Substances 0.000 claims abstract description 38
- 238000003384 imaging method Methods 0.000 claims description 101
- 230000003287 optical effect Effects 0.000 claims description 58
- 230000010287 polarization Effects 0.000 claims description 52
- 239000004973 liquid crystal related substance Substances 0.000 claims description 15
- 239000003086 colorant Substances 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 8
- 239000004988 Nematic liquid crystal Substances 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims 2
- 239000010410 layer Substances 0.000 description 134
- 230000008033 biological extinction Effects 0.000 description 18
- 238000002834 transmittance Methods 0.000 description 17
- 238000009501 film coating Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 13
- 230000003595 spectral effect Effects 0.000 description 11
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000013078 crystal Substances 0.000 description 6
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- 238000004458 analytical method Methods 0.000 description 5
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- 229910052732 germanium Inorganic materials 0.000 description 3
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- 239000011159 matrix material Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 210000000887 face Anatomy 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 2
- 210000002381 plasma Anatomy 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 101100289061 Drosophila melanogaster lili gene Proteins 0.000 description 1
- 229910004366 ThF4 Inorganic materials 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000009125 cardiac resynchronization therapy Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000009500 colour coating Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
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- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910052705 radium Inorganic materials 0.000 description 1
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 238000007736 thin film deposition technique Methods 0.000 description 1
- 238000000427 thin-film deposition Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
-
- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
Definitions
- the means for combining the encoded beams is preferably the same discriminator employed to separate the uncoded beams in to s- and p- polarized beams, in which case the encoded beams are reflected back into the device in accordance with a scheme that depends on the type of spatial modulators employed. However, this is not necessary and it is equally possible to combine the beams with a second similar polarizing beam discriminator downstream of the first. Instead of reflecting the encoded beams back into the first device, the encoded beams are transmitted to a second device where they are combined into the output beam.
- Fig. 12. shows the calculated reflectance curves for s-polarized light as a function of wavelength ratio for thin film systems having 1 , 20, 40 and 60 periods of a three-layer basic structure as in Fig. 8.
- the angle of incidence ⁇ o is 57.3°.
- Fig. 16 shows the calculated reflectance curves for s-polarized light as a function of wavelength ratio for a thin film system having 40 periods of the basic structure as in Fig. 8.
- the angles of incidences are 50°, 55°, 60°, 65° and 70°;
- Fig. 36 shows a Imaging element 1 that is a monochrome, reflective, twisted nematic LC panel
- Display system 3 is a super high efficiency 2D/3D projection display. It consists of one thin film polarizing device 400, a lighting element 401 that emits white light, six identical reflective imaging elements 440, 441 , 442, 443, 444, and 445 that can be selected from monochrome Imagining elements 1 (TNLC) or 5 (PDLC), two identical "X" shape colour separation cubes or plates 446, 447, a projection lens 405 and an optional screen 406.
- unpolarized light from the lighting element 401 is launched into the end face 407 of the thin film polarizing device 400 and is split into two polarized light beams by the thin film coatin.
- the p-polarized light is reflected from the thin film layers to the end face 408; the s-polarized light is transmitted through the thin film layers and exits the end face 409.
- Display system 4 An alternative embodiment of Display system 4 is Display system 5, shown in Figure 50. In operation, this embodiment is very similar to Display system 1 except that the light incident upon the thin film polarized devices is already separated into colours. It is also similar to Display system 4 except that instead of using six reflective imaging
- the offset is approximately a distance between the eyes of an average person or a distance related thereto and to the nature of the camera lenses employed.
- the scene recorded by the first camera is viewed by only one of the viewer's eyes.
- the scene recorded by the second camera is viewed by the other of the viewer's eyes.
- the configuration shown and described with reference to Fig. 52 lends itself to this 3-D recording and viewing.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002183188A CA2183188A1 (en) | 1996-08-13 | 1996-08-13 | High efficiency projection displays having thin film polarizing beam splitters |
| CA2183188 | 1996-08-13 | ||
| PCT/CA1997/000567 WO1998007279A1 (en) | 1996-08-12 | 1997-08-13 | High efficiency projection displays having thin film polarizing beam-splitters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0855121A1 true EP0855121A1 (de) | 1998-07-29 |
Family
ID=4158741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97935403A Withdrawn EP0855121A1 (de) | 1996-08-13 | 1997-08-13 | Hocheffiziente projektionsanzeige mit polarisierendem dünnfilm-strahlteiler |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0855121A1 (de) |
| CA (1) | CA2183188A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7690794B2 (en) | 2006-07-02 | 2010-04-06 | Simon Andrew Boothroyd | Image-combining device and projection display apparatus having image-combining devices incorporated therein |
| CA2736292A1 (en) * | 2008-09-08 | 2010-03-11 | National Research Council Of Canada | Thin film optical filters with an integral air layer |
-
1996
- 1996-08-13 CA CA002183188A patent/CA2183188A1/en not_active Abandoned
-
1997
- 1997-08-13 EP EP97935403A patent/EP0855121A1/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9807279A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2183188A1 (en) | 1998-02-14 |
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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 |
|
| 17P | Request for examination filed |
Effective date: 19980507 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE GB |
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| 17Q | First examination report despatched |
Effective date: 20000210 |
|
| RTI1 | Title (correction) |
Free format text: HIGH EFFICIENCY PROJECTION DISPLAY HAVING THIN FILM POLARIZING BEAM-SPLITTERS |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
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| RTI1 | Title (correction) |
Free format text: HIGH EFFICIENCY PROJECTION DISPLAY HAVING THIN FILM POLARIZING BEAM-SPLITTERS |
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| GRAG | Despatch of communication of intention to grant |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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| 18W | Application withdrawn |
Withdrawal date: 20020708 |