CA971781A - Projection display device - Google Patents
Projection display deviceInfo
- Publication number
- CA971781A CA971781A CA150,690A CA150690A CA971781A CA 971781 A CA971781 A CA 971781A CA 150690 A CA150690 A CA 150690A CA 971781 A CA971781 A CA 971781A
- Authority
- CA
- Canada
- Prior art keywords
- display device
- projection display
- 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.)
- 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
- G03B21/10—Projectors with built-in or built-on screen
- G03B21/11—Projectors with built-in or built-on screen for microfilm reading
-
- 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
- G03B21/10—Projectors with built-in or built-on screen
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17680571A | 1971-09-01 | 1971-09-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA971781A true CA971781A (en) | 1975-07-29 |
Family
ID=22645901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA150,690A Expired CA971781A (en) | 1971-09-01 | 1972-08-31 | Projection display device |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS4835825A (en) |
CA (1) | CA971781A (en) |
DE (1) | DE2243234A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3501531C1 (en) * | 1985-01-18 | 1986-09-18 | Bengel, Brigitte, 7148 Remseck | Reading device for microfilmed information carriers |
-
1972
- 1972-08-31 CA CA150,690A patent/CA971781A/en not_active Expired
- 1972-09-01 DE DE19722243234 patent/DE2243234A1/en active Pending
- 1972-09-01 JP JP8723372A patent/JPS4835825A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2243234A1 (en) | 1973-03-08 |
JPS4835825A (en) | 1973-05-26 |
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