GB1537304A - Microform reader - Google Patents

Microform reader

Info

Publication number
GB1537304A
GB1537304A GB12032/76A GB1203276A GB1537304A GB 1537304 A GB1537304 A GB 1537304A GB 12032/76 A GB12032/76 A GB 12032/76A GB 1203276 A GB1203276 A GB 1203276A GB 1537304 A GB1537304 A GB 1537304A
Authority
GB
United Kingdom
Prior art keywords
march
rings
lens
rotatable
optical
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
GB12032/76A
Other languages
English (en)
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.)
Bell and Howell Co
Original Assignee
Bell and Howell Co
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 Bell and Howell Co filed Critical Bell and Howell Co
Publication of GB1537304A publication Critical patent/GB1537304A/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)
GB12032/76A 1975-03-31 1976-03-25 Microform reader Expired GB1537304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/563,949 US4050799A (en) 1975-03-31 1975-03-31 Microform reader

Publications (1)

Publication Number Publication Date
GB1537304A true GB1537304A (en) 1978-12-29

Family

ID=24252563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12032/76A Expired GB1537304A (en) 1975-03-31 1976-03-25 Microform reader

Country Status (6)

Country Link
US (1) US4050799A (enExample)
CA (1) CA1046317A (enExample)
DE (1) DE2612732C2 (enExample)
FR (1) FR2306460A1 (enExample)
GB (1) GB1537304A (enExample)
ZA (1) ZA761610B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339181A (en) * 1980-03-04 1982-07-13 Datagraphix, Inc. Lens arrangements for microfiche reader assembly and method
US5880894A (en) * 1997-07-23 1999-03-09 Blakley; Rick D. Method and system for mounting optical elements

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2137286A (en) * 1936-05-26 1938-11-22 Signaphone Corp Of America Reflector
DE840928C (de) * 1942-03-26 1952-06-09 Thomson Houston Comp Francaise Vorrichtung zum Halten und Fuehren von Filmen in Form von Rollen oder einzelnen oderzu kleinen Stapeln vereinigten Baendern beschraenkter Laenge in einem Filmbetrachtungs- oder Filmprojektionsgeraet
FR1165843A (fr) * 1955-10-10 1958-10-29 Realisations Tech Soc Et Projecteur perfectionné pour appareil de lecture des microfilms et autres documents
US3296924A (en) * 1965-02-23 1967-01-10 Bell & Howell Co Single cell image plane position appraisal system for a slide projector
US3588230A (en) * 1969-01-13 1971-06-28 Us Navy Adjustable lens mount
BE755081A (fr) * 1969-08-21 1971-02-01 Ncr Co Appareil lecteur pour micro-films
DE7147718U (de) * 1971-12-18 1972-10-19 Maier A Betrachtungsgeraet fuer roengtenfilme
US3860333A (en) * 1972-03-20 1975-01-14 Realist Microfiche reader
US3879112A (en) * 1973-05-29 1975-04-22 Singer Co Adjustable mirror mount

Also Published As

Publication number Publication date
FR2306460B3 (enExample) 1978-12-22
DE2612732A1 (de) 1976-10-14
FR2306460A1 (fr) 1976-10-29
ZA761610B (en) 1977-03-30
US4050799A (en) 1977-09-27
CA1046317A (en) 1979-01-16
DE2612732C2 (de) 1985-04-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee