GB1215304A - Desk reader for micro film - Google Patents
Desk reader for micro filmInfo
- Publication number
- GB1215304A GB1215304A GB5415167A GB5415167A GB1215304A GB 1215304 A GB1215304 A GB 1215304A GB 5415167 A GB5415167 A GB 5415167A GB 5415167 A GB5415167 A GB 5415167A GB 1215304 A GB1215304 A GB 1215304A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reader
- desk
- degrees
- microfilm
- micro film
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Projection-Type Copiers In General (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
1,215,304. Microfilm projection readers. GILLETT & SIBERT Ltd. Feb.28, 1969 [Nov. 28, 1967], No. 54151/67. Heading G2A. A microfilm reader projects images from a microfiche in cover glasses 12 on an orthogonally movable carrier plate 13 on to a screen 8 inclined at from 37 degrees to 45 degrees to the base 2 of the reader, the optical system comprising lamp 10, spring-loaded condenser system 11, projection lens 21 and three plane mirrors 22, 24, 25. A stylus 19 on carrier 13 is manually moved over a grid sheet on table 14 to select a given microimage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5415167A GB1215304A (en) | 1967-11-28 | 1967-11-28 | Desk reader for micro film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5415167A GB1215304A (en) | 1967-11-28 | 1967-11-28 | Desk reader for micro film |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1215304A true GB1215304A (en) | 1970-12-09 |
Family
ID=10470092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5415167A Expired GB1215304A (en) | 1967-11-28 | 1967-11-28 | Desk reader for micro film |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1215304A (en) |
-
1967
- 1967-11-28 GB GB5415167A patent/GB1215304A/en not_active Expired
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