GB1215304A - Desk reader for micro film - Google Patents

Desk reader for micro film

Info

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
Application number
GB5415167A
Inventor
Alan Charles Sibert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GILLETT AND SIBERT Ltd
Original Assignee
GILLETT AND SIBERT Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GILLETT AND SIBERT Ltd filed Critical GILLETT AND SIBERT Ltd
Priority to GB5415167A priority Critical patent/GB1215304A/en
Publication of GB1215304A publication Critical patent/GB1215304A/en
Expired legal-status Critical Current

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.
GB5415167A 1967-11-28 1967-11-28 Desk reader for micro film Expired GB1215304A (en)

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)

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