ES363974A1 - Un dispositivo de cabeza de proyeccion para un proyector e-levado. - Google Patents
Un dispositivo de cabeza de proyeccion para un proyector e-levado.Info
- Publication number
- ES363974A1 ES363974A1 ES363974A ES363974A ES363974A1 ES 363974 A1 ES363974 A1 ES 363974A1 ES 363974 A ES363974 A ES 363974A ES 363974 A ES363974 A ES 363974A ES 363974 A1 ES363974 A1 ES 363974A1
- Authority
- ES
- Spain
- Prior art keywords
- overhead projector
- mirror
- control shield
- flare control
- angles
- 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
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
- G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S353/00—Optics: image projectors
- Y10S353/06—Head accessories
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US71031768A | 1968-03-04 | 1968-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES363974A1 true ES363974A1 (es) | 1971-01-01 |
Family
ID=24853522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES363974A Expired ES363974A1 (es) | 1968-03-04 | 1969-02-22 | Un dispositivo de cabeza de proyeccion para un proyector e-levado. |
Country Status (12)
Country | Link |
---|---|
US (1) | US3536391A (es) |
JP (1) | JPS4942925B1 (es) |
AT (1) | AT301210B (es) |
BE (1) | BE729253A (es) |
BR (1) | BR6906808D0 (es) |
CH (1) | CH495562A (es) |
DE (1) | DE1909641A1 (es) |
ES (1) | ES363974A1 (es) |
FR (1) | FR2003151B1 (es) |
GB (1) | GB1258519A (es) |
NL (1) | NL142244B (es) |
SE (1) | SE343402B (es) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5227821A (en) * | 1987-04-30 | 1993-07-13 | Nview Corporation | Liquid crystal display for projection systems |
US5255029A (en) * | 1987-04-30 | 1993-10-19 | Nview Corporation | Liquid crystal display for projection systems |
US5745292A (en) * | 1992-11-25 | 1998-04-28 | Tenebraex Corporation | Optical devices and reflection control techniques |
US6582084B2 (en) * | 2001-03-19 | 2003-06-24 | 3M Innovative Properties Company | Projector having an inverted head optical arrangement |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126786A (en) * | 1964-03-31 | appeldorn | ||
US703858A (en) * | 1902-03-19 | 1902-07-01 | Auguste Vautier | Photographic camera. |
US1333033A (en) * | 1919-05-08 | 1920-03-09 | Narodick Martin | Glare-preventing device for headlights |
US1662693A (en) * | 1925-01-26 | 1928-03-13 | Astafiev Michael | Optical system |
US1708776A (en) * | 1928-04-14 | 1929-04-09 | Clarence R Polen | Visor attachment for headlights |
US2034441A (en) * | 1934-05-02 | 1936-03-17 | Folmer Graflex Corp | Art or method of accurately photographing upon film strips having nonsensitized ends |
-
1968
- 1968-03-04 US US710317A patent/US3536391A/en not_active Expired - Lifetime
-
1969
- 1969-02-21 NL NL696902751A patent/NL142244B/xx not_active IP Right Cessation
- 1969-02-21 SE SE2416/69A patent/SE343402B/xx unknown
- 1969-02-21 DE DE19691909641 patent/DE1909641A1/de active Pending
- 1969-02-22 ES ES363974A patent/ES363974A1/es not_active Expired
- 1969-03-03 JP JP44016089A patent/JPS4942925B1/ja active Pending
- 1969-03-03 AT AT209169A patent/AT301210B/de not_active IP Right Cessation
- 1969-03-03 GB GB1258519D patent/GB1258519A/en not_active Expired
- 1969-03-03 CH CH316469A patent/CH495562A/de not_active IP Right Cessation
- 1969-03-03 BR BR206808/69A patent/BR6906808D0/pt unknown
- 1969-03-03 FR FR696905607A patent/FR2003151B1/fr not_active Expired
- 1969-03-03 BE BE729253A patent/BE729253A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AT301210B (de) | 1972-08-25 |
US3536391A (en) | 1970-10-27 |
NL142244B (nl) | 1974-05-15 |
SE343402B (es) | 1972-03-06 |
NL6902751A (es) | 1969-09-08 |
FR2003151B1 (es) | 1974-06-14 |
JPS4942925B1 (es) | 1974-11-18 |
BE729253A (es) | 1969-09-03 |
FR2003151A1 (es) | 1969-11-07 |
GB1258519A (es) | 1971-12-30 |
CH495562A (de) | 1970-08-31 |
BR6906808D0 (pt) | 1973-01-11 |
DE1909641A1 (de) | 1969-10-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19881116 |