JPS623938B2 - - Google Patents
Info
- Publication number
- JPS623938B2 JPS623938B2 JP54054411A JP5441179A JPS623938B2 JP S623938 B2 JPS623938 B2 JP S623938B2 JP 54054411 A JP54054411 A JP 54054411A JP 5441179 A JP5441179 A JP 5441179A JP S623938 B2 JPS623938 B2 JP S623938B2
- Authority
- JP
- Japan
- Prior art keywords
- screen
- plate
- center
- circular
- rotary plate
- 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.)
- Expired
Links
- 230000005484 gravity Effects 0.000 claims description 10
- 230000000452 restraining effect Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5441179A JPS55146439A (en) | 1979-05-02 | 1979-05-02 | Vibration type projecting screen |
US06/145,732 US4317618A (en) | 1979-05-02 | 1980-05-01 | Vibrating screen for image projection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5441179A JPS55146439A (en) | 1979-05-02 | 1979-05-02 | Vibration type projecting screen |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55146439A JPS55146439A (en) | 1980-11-14 |
JPS623938B2 true JPS623938B2 (en]) | 1987-01-28 |
Family
ID=12969950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5441179A Granted JPS55146439A (en) | 1979-05-02 | 1979-05-02 | Vibration type projecting screen |
Country Status (2)
Country | Link |
---|---|
US (1) | US4317618A (en]) |
JP (1) | JPS55146439A (en]) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5974541A (ja) * | 1982-10-20 | 1984-04-27 | Yuupu:Kk | 映写幕への映写方式及び映写幕 |
KR100576612B1 (ko) * | 2003-05-31 | 2006-05-04 | 최해용 | 표면 반사형 불연재 금속 스크린 및 동 스크린의 제조방법 |
US7864419B2 (en) * | 2004-06-08 | 2011-01-04 | Ellis Amalgamated LLC | Optical scanning assembly |
US8675125B2 (en) | 2005-04-27 | 2014-03-18 | Parellel Consulting Limited Liability Company | Minimized-thickness angular scanner of electromagnetic radiation |
JP2006343663A (ja) * | 2005-06-10 | 2006-12-21 | Sony Corp | 画像投影装置及びこれに用いるスクリーン |
JP4605032B2 (ja) * | 2006-01-25 | 2011-01-05 | ソニー株式会社 | スクリーン及び画像投影装置 |
JP4193899B2 (ja) | 2006-04-05 | 2008-12-10 | 三菱電機株式会社 | 投写型画像表示装置 |
JP4961815B2 (ja) * | 2006-04-17 | 2012-06-27 | セイコーエプソン株式会社 | スクリーン、リアプロジェクタ及び画像表示装置 |
US7660037B2 (en) | 2006-06-06 | 2010-02-09 | Seiko Epson Corporation | Screen, projector, and image display device |
US7796330B2 (en) * | 2006-11-16 | 2010-09-14 | High Definition Integration, Ltd. | Anti-speckling laser rear-projection screen structure and methodology |
JP4969294B2 (ja) * | 2007-04-03 | 2012-07-04 | 三菱電機株式会社 | 投写型画像表示装置 |
JP4467598B2 (ja) | 2007-04-12 | 2010-05-26 | 三菱電機株式会社 | 投写型画像表示装置 |
WO2014167673A1 (ja) * | 2013-04-10 | 2014-10-16 | パイオニア株式会社 | スクリーン装置 |
JPWO2014167672A1 (ja) * | 2013-04-10 | 2017-02-16 | パイオニア株式会社 | スクリーン装置 |
EP3444667B1 (en) | 2013-05-09 | 2023-12-06 | IMAX Theatres International Limited | Methods and systems of vibrating a screen |
RU2670577C2 (ru) * | 2013-06-06 | 2018-10-23 | Реалд Инк. | Система и способ сообщения экранам вибрации для понижения уровня спеклов |
US9921416B2 (en) | 2014-01-03 | 2018-03-20 | Dolby Laboratories Licensing Corporation | Moveably-coupled screen actuators |
CA3214632A1 (en) | 2014-12-09 | 2016-06-16 | Imax Theatres International Limited | Methods and systems of vibrating a screen |
DE102015200929A1 (de) * | 2015-01-21 | 2016-07-21 | Robert Bosch Gmbh | Projektionsschirmvorrichtung, Projektionsvorrichtung und Projektionsverfahren |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125927A (en) * | 1964-03-24 | Projection screen | ||
GB592815A (en) * | 1945-05-25 | 1947-09-30 | Taylor Taylor & Hobson Ltd | Improvements in or relating to translucent diffusion screens |
US1969909A (en) * | 1931-08-19 | 1934-08-14 | Luther G Simjian | Motion picture moving screen |
US2348818A (en) * | 1940-02-07 | 1944-05-16 | Jacobson Johan Sam | Projection of images |
US2343586A (en) * | 1941-12-16 | 1944-03-07 | Ludwig L Lawrence | Process and apparatus for eliminating graining in photography |
US2525596A (en) * | 1949-01-21 | 1950-10-10 | Jones & Lamson Mach Co | Optical projection screen |
US2837008A (en) * | 1952-03-10 | 1958-06-03 | Richard T Erban | Kinoptic devices |
US2780136A (en) * | 1952-03-10 | 1957-02-05 | Richard T Erban | Kinoptic devices |
CH381886A (it) * | 1961-03-22 | 1964-09-15 | Omi Ottico Mecc Italiana | Dispositivo per osservare per trasparenza proiezioni di immagini fottografiche, particolarmente adatto per applicazioni fotogrammetriche |
US3473862A (en) * | 1967-03-06 | 1969-10-21 | Singer General Precision | Optical screen orbital movement system |
US3640602A (en) * | 1969-04-07 | 1972-02-08 | Eastman Kodak Co | Projection screen |
-
1979
- 1979-05-02 JP JP5441179A patent/JPS55146439A/ja active Granted
-
1980
- 1980-05-01 US US06/145,732 patent/US4317618A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4317618A (en) | 1982-03-02 |
JPS55146439A (en) | 1980-11-14 |
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