DD108389A5 - - Google Patents
Info
- Publication number
- DD108389A5 DD108389A5 DD174964A DD17496473A DD108389A5 DD 108389 A5 DD108389 A5 DD 108389A5 DD 174964 A DD174964 A DD 174964A DD 17496473 A DD17496473 A DD 17496473A DD 108389 A5 DD108389 A5 DD 108389A5
- Authority
- DD
- German Democratic Republic
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 |
|---|---|
| DD108389A5 true DD108389A5 (xx) | 1974-09-12 |
Family
ID=23204494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD174964A DD108389A5 (xx) | 1972-11-30 | 1973-11-29 |
Country Status (26)
| Country | Link |
|---|---|
| US (1) | US3782805A (xx) |
| JP (1) | JPS5342252B2 (xx) |
| AR (1) | AR201491A1 (xx) |
| AT (1) | AT340173B (xx) |
| AU (1) | AU472576B2 (xx) |
| BE (1) | BE807792A (xx) |
| BR (1) | BR7309380D0 (xx) |
| CA (1) | CA991896A (xx) |
| CH (1) | CH561433A5 (xx) |
| CS (1) | CS177157B2 (xx) |
| DD (1) | DD108389A5 (xx) |
| DE (1) | DE2358675C3 (xx) |
| ES (1) | ES219944Y (xx) |
| FR (1) | FR2209464A5 (xx) |
| GB (1) | GB1402228A (xx) |
| HU (1) | HU168801B (xx) |
| IE (1) | IE38541B1 (xx) |
| IL (1) | IL43716A (xx) |
| IN (1) | IN138598B (xx) |
| LU (1) | LU68875A1 (xx) |
| NL (1) | NL166796C (xx) |
| OA (1) | OA04573A (xx) |
| PL (1) | PL94148B1 (xx) |
| SE (1) | SE394527B (xx) |
| SU (1) | SU670246A3 (xx) |
| ZA (1) | ZA738878B (xx) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938876A (en) * | 1974-12-19 | 1976-02-17 | Qantix Corporation | Front projection screen made from a transparent material |
| US3966301A (en) * | 1974-12-19 | 1976-06-29 | Qantix Corporation | Transparent screen having intermittent portions for reducing reflection from ambient light |
| JPS5189419A (xx) * | 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 |
| GB1590679A (en) * | 1976-09-13 | 1981-06-03 | Izon Corp | Compact optical viewer for microfiche and cassette |
| 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 AU AU62854/73A patent/AU472576B2/en not_active Expired
- 1973-11-23 CH CH1653773A patent/CH561433A5/xx not_active IP Right Cessation
- 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 GB GB5493773A patent/GB1402228A/en not_active Expired
- 1973-11-27 AR AR251196A patent/AR201491A1/es active
- 1973-11-28 IN IN2622/CAL/73A patent/IN138598B/en unknown
- 1973-11-28 IL IL43716A patent/IL43716A/xx unknown
- 1973-11-28 CA CA186,877A patent/CA991896A/en not_active Expired
- 1973-11-28 LU LU68875A patent/LU68875A1/xx unknown
- 1973-11-29 SU SU731980089A patent/SU670246A3/ru active
- 1973-11-29 OA OA55073A patent/OA04573A/xx unknown
- 1973-11-29 HU HUKA1395A patent/HU168801B/hu unknown
- 1973-11-29 ES ES1973219944U patent/ES219944Y/es not_active Expired
- 1973-11-29 DD DD174964A patent/DD108389A5/xx unknown
- 1973-11-29 BR BR9380/73A patent/BR7309380D0/pt unknown
- 1973-11-29 JP JP13394573A patent/JPS5342252B2/ja not_active Expired
- 1973-11-30 PL PL1973166956A patent/PL94148B1/pl unknown
- 1973-11-30 CS CS8271A patent/CS177157B2/cs unknown
- 1973-11-30 NL NL7316470.A patent/NL166796C/xx not_active IP Right Cessation
- 1973-11-30 FR FR7342785A patent/FR2209464A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| LU68875A1 (xx) | 1974-01-29 |
| DE2358675C3 (de) | 1978-10-05 |
| OA04573A (fr) | 1980-05-31 |
| ES219944U (es) | 1976-11-01 |
| NL166796B (nl) | 1981-04-15 |
| AU6285473A (en) | 1975-05-29 |
| DE2358675A1 (de) | 1974-06-06 |
| FR2209464A5 (xx) | 1974-06-28 |
| JPS501726A (xx) | 1975-01-09 |
| IL43716A0 (en) | 1974-03-14 |
| GB1402228A (en) | 1975-08-06 |
| NL7316470A (xx) | 1974-06-04 |
| US3782805A (en) | 1974-01-01 |
| IL43716A (en) | 1975-12-31 |
| JPS5342252B2 (xx) | 1978-11-10 |
| CA991896A (en) | 1976-06-29 |
| ZA738878B (en) | 1974-10-30 |
| CH561433A5 (xx) | 1975-04-30 |
| SU670246A3 (ru) | 1979-06-25 |
| AT340173B (de) | 1977-11-25 |
| AR201491A1 (es) | 1975-03-21 |
| NL166796C (nl) | 1981-09-15 |
| PL94148B1 (xx) | 1977-07-30 |
| DE2358675B2 (de) | 1978-01-19 |
| IE38541L (en) | 1974-05-30 |
| ATA987773A (de) | 1977-03-15 |
| AU472576B2 (en) | 1976-05-27 |
| IN138598B (xx) | 1976-02-28 |
| CS177157B2 (xx) | 1977-07-29 |
| ES219944Y (es) | 1977-03-01 |
| HU168801B (xx) | 1976-07-28 |
| IE38541B1 (en) | 1978-04-12 |
| SE394527B (sv) | 1977-06-27 |
| BE807792A (fr) | 1974-03-15 |
| BR7309380D0 (pt) | 1974-09-05 |