BR7309380D0 - Tela para projecao frontal feita de material transparente - Google Patents
Tela para projecao frontal feita de material transparenteInfo
- Publication number
- BR7309380D0 BR7309380D0 BR9380/73A BR938073A BR7309380D0 BR 7309380 D0 BR7309380 D0 BR 7309380D0 BR 9380/73 A BR9380/73 A BR 9380/73A BR 938073 A BR938073 A BR 938073A BR 7309380 D0 BR7309380 D0 BR 7309380D0
- Authority
- BR
- Brazil
- Prior art keywords
- transparent material
- screen made
- project screen
- front project
- transparent
- Prior art date
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
- G03B21/602—Lenticular screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Optical Elements Other Than Lenses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31088272A | 1972-11-30 | 1972-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7309380D0 true BR7309380D0 (pt) | 1974-09-05 |
Family
ID=23204494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9380/73A BR7309380D0 (pt) | 1972-11-30 | 1973-11-29 | Tela para projecao frontal feita de material transparente |
Country Status (26)
Country | Link |
---|---|
US (1) | US3782805A (pt) |
JP (1) | JPS5342252B2 (pt) |
AR (1) | AR201491A1 (pt) |
AT (1) | AT340173B (pt) |
AU (1) | AU472576B2 (pt) |
BE (1) | BE807792A (pt) |
BR (1) | BR7309380D0 (pt) |
CA (1) | CA991896A (pt) |
CH (1) | CH561433A5 (pt) |
CS (1) | CS177157B2 (pt) |
DD (1) | DD108389A5 (pt) |
DE (1) | DE2358675C3 (pt) |
ES (1) | ES219944Y (pt) |
FR (1) | FR2209464A5 (pt) |
GB (1) | GB1402228A (pt) |
HU (1) | HU168801B (pt) |
IE (1) | IE38541B1 (pt) |
IL (1) | IL43716A (pt) |
IN (1) | IN138598B (pt) |
LU (1) | LU68875A1 (pt) |
NL (1) | NL166796C (pt) |
OA (1) | OA04573A (pt) |
PL (1) | PL94148B1 (pt) |
SE (1) | SE394527B (pt) |
SU (1) | SU670246A3 (pt) |
ZA (1) | ZA738878B (pt) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3966301A (en) * | 1974-12-19 | 1976-06-29 | Qantix Corporation | Transparent screen having intermittent portions for reducing reflection from ambient light |
US3938876A (en) * | 1974-12-19 | 1976-02-17 | Qantix Corporation | Front projection screen made from a transparent material |
JPS5189419A (pt) * | 1975-02-03 | 1976-08-05 | ||
JPS5211033A (en) * | 1975-07-09 | 1977-01-27 | Kanteitsukusu Corp | Screen |
US4012115A (en) * | 1975-07-10 | 1977-03-15 | Qantix Corporation | Sawtooth shaped front screen |
IN149132B (pt) * | 1976-09-13 | 1981-09-19 | Izon Corp | |
US4497860A (en) * | 1978-12-18 | 1985-02-05 | Minnesota Mining And Manufacturing Company | Imageable prismatic array |
US4206969A (en) * | 1979-04-11 | 1980-06-10 | Minnesota Mining And Manufacturing Company | Directional front projection screen |
US4387959A (en) * | 1981-01-06 | 1983-06-14 | Zenith Radio Corporation | Rear projection screen |
US5237449A (en) * | 1991-01-29 | 1993-08-17 | Nelson Optics Company, Inc. | Biased lenticular sign system |
US20050185279A1 (en) * | 1999-01-21 | 2005-08-25 | Reflexite Corporation | Durable, open-faced retroreflective prismatic construction |
US6967053B1 (en) | 1999-01-21 | 2005-11-22 | Reflexite Corporation | Durable, open-faced retroreflective prismatic construction |
GB9926315D0 (en) * | 1999-11-05 | 2000-01-12 | Microgrin Limited | Diffusion or projection screen |
JP2001221975A (ja) * | 2000-02-10 | 2001-08-17 | Fujitsu Ltd | 光学装置 |
JP2006267222A (ja) * | 2005-03-22 | 2006-10-05 | Toshiba Corp | 投射型スクリーンおよび画像投影システム |
US7506987B2 (en) * | 2007-03-02 | 2009-03-24 | Technology Solutions & Invention Llc | Two-sided corner-cube retroreflectors and methods of manufacturing the same |
US7974005B2 (en) * | 2007-12-12 | 2011-07-05 | Texas Instruments Incorporated | Display screen for use in front projectors |
US8568002B2 (en) * | 2010-03-05 | 2013-10-29 | Southpac Trust International Inc., Trustee of the LDH Trust | Light diffusion and condensing fixture |
EP3397815B1 (en) * | 2015-12-28 | 2023-02-15 | Kriezman, Omri | Parking gate barrier rod projecting system |
CN114488678B (zh) * | 2018-03-22 | 2023-06-30 | 深圳光峰科技股份有限公司 | 曲面屏幕及其微结构设置方法和投影系统 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2351034A (en) * | 1944-06-13 | Optical system composed of | ||
US595273A (en) * | 1897-12-07 | soper | ||
US2180093A (en) * | 1936-03-10 | 1939-11-14 | Persons Majestic Mfg Company | Reflecting device |
US2175067A (en) * | 1938-04-23 | 1939-10-03 | Holophane Co Inc | Prismatic reflector |
US2551954A (en) * | 1947-02-21 | 1951-05-08 | John L Lehman | Lighting device having a lens which gives a long and relatively narrow area of illumination |
US2991693A (en) * | 1956-07-23 | 1961-07-11 | American Optical Corp | Front projection screen |
-
1972
- 1972-11-30 US US00310882A patent/US3782805A/en not_active Expired - Lifetime
-
1973
- 1973-11-21 ZA ZA738878A patent/ZA738878B/xx unknown
- 1973-11-22 IE IE2124/73A patent/IE38541B1/xx unknown
- 1973-11-22 SE SE7315806A patent/SE394527B/xx unknown
- 1973-11-23 CH CH1653773A patent/CH561433A5/xx not_active IP Right Cessation
- 1973-11-23 AU AU62854/73A patent/AU472576B2/en not_active Expired
- 1973-11-24 DE DE2358675A patent/DE2358675C3/de not_active Expired
- 1973-11-26 BE BE138157A patent/BE807792A/xx unknown
- 1973-11-26 AT AT987773A patent/AT340173B/de active
- 1973-11-27 AR AR251196A patent/AR201491A1/es active
- 1973-11-27 GB GB5493773A patent/GB1402228A/en not_active Expired
- 1973-11-28 IN IN2622/CAL/73A patent/IN138598B/en unknown
- 1973-11-28 LU LU68875A patent/LU68875A1/xx unknown
- 1973-11-28 IL IL43716A patent/IL43716A/xx unknown
- 1973-11-28 CA CA186,877A patent/CA991896A/en not_active Expired
- 1973-11-29 SU SU731980089A patent/SU670246A3/ru active
- 1973-11-29 DD DD174964A patent/DD108389A5/xx unknown
- 1973-11-29 ES ES1973219944U patent/ES219944Y/es not_active Expired
- 1973-11-29 JP JP13394573A patent/JPS5342252B2/ja not_active Expired
- 1973-11-29 HU HUKA1395A patent/HU168801B/hu unknown
- 1973-11-29 OA OA55073A patent/OA04573A/xx unknown
- 1973-11-29 BR BR9380/73A patent/BR7309380D0/pt unknown
- 1973-11-30 PL PL1973166956A patent/PL94148B1/pl unknown
- 1973-11-30 CS CS8271A patent/CS177157B2/cs unknown
- 1973-11-30 FR FR7342785A patent/FR2209464A5/fr not_active Expired
- 1973-11-30 NL NL7316470.A patent/NL166796C/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AR201491A1 (es) | 1975-03-21 |
JPS501726A (pt) | 1975-01-09 |
NL166796C (nl) | 1981-09-15 |
IE38541L (en) | 1974-05-30 |
NL166796B (nl) | 1981-04-15 |
US3782805A (en) | 1974-01-01 |
PL94148B1 (pt) | 1977-07-30 |
DE2358675A1 (de) | 1974-06-06 |
SU670246A3 (ru) | 1979-06-25 |
JPS5342252B2 (pt) | 1978-11-10 |
ATA987773A (de) | 1977-03-15 |
CA991896A (en) | 1976-06-29 |
AT340173B (de) | 1977-11-25 |
ES219944Y (es) | 1977-03-01 |
ES219944U (es) | 1976-11-01 |
NL7316470A (pt) | 1974-06-04 |
LU68875A1 (pt) | 1974-01-29 |
FR2209464A5 (pt) | 1974-06-28 |
HU168801B (pt) | 1976-07-28 |
DE2358675B2 (de) | 1978-01-19 |
IL43716A (en) | 1975-12-31 |
ZA738878B (en) | 1974-10-30 |
IL43716A0 (en) | 1974-03-14 |
CH561433A5 (pt) | 1975-04-30 |
DE2358675C3 (de) | 1978-10-05 |
AU6285473A (en) | 1975-05-29 |
CS177157B2 (pt) | 1977-07-29 |
BE807792A (fr) | 1974-03-15 |
IE38541B1 (en) | 1978-04-12 |
SE394527B (sv) | 1977-06-27 |
GB1402228A (en) | 1975-08-06 |
AU472576B2 (en) | 1976-05-27 |
IN138598B (pt) | 1976-02-28 |
OA04573A (fr) | 1980-05-31 |
DD108389A5 (pt) | 1974-09-12 |
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