CA1103492A - Compact optical viewer for microfiche or cassette - Google Patents

Compact optical viewer for microfiche or cassette

Info

Publication number
CA1103492A
CA1103492A CA285,443A CA285443A CA1103492A CA 1103492 A CA1103492 A CA 1103492A CA 285443 A CA285443 A CA 285443A CA 1103492 A CA1103492 A CA 1103492A
Authority
CA
Canada
Prior art keywords
light
mirror
prism sheet
prism
sheet
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
CA285,443A
Other languages
English (en)
French (fr)
Inventor
George J. Yevick
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.)
Izon Corp
Original Assignee
Izon Corp
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 Izon Corp filed Critical Izon Corp
Application granted granted Critical
Publication of CA1103492A publication Critical patent/CA1103492A/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)
  • Optical Elements Other Than Lenses (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Facsimile Scanning Arrangements (AREA)
CA285,443A 1976-09-13 1977-08-25 Compact optical viewer for microfiche or cassette Expired CA1103492A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71785876A 1976-09-13 1976-09-13
US717,858 1976-09-13

Publications (1)

Publication Number Publication Date
CA1103492A true CA1103492A (en) 1981-06-23

Family

ID=24883776

Family Applications (1)

Application Number Title Priority Date Filing Date
CA285,443A Expired CA1103492A (en) 1976-09-13 1977-08-25 Compact optical viewer for microfiche or cassette

Country Status (13)

Country Link
JP (1) JPS5341227A (de)
AT (1) AT368640B (de)
BE (1) BE858178A (de)
BR (1) BR7705679A (de)
CA (1) CA1103492A (de)
DE (1) DE2738658C3 (de)
ES (1) ES461877A1 (de)
FR (1) FR2413686A1 (de)
GB (1) GB1590679A (de)
HK (1) HK41884A (de)
IN (1) IN149132B (de)
MX (1) MX148985A (de)
NL (1) NL7709456A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54163927U (de) * 1978-05-10 1979-11-16
DE2906477C3 (de) 1979-02-20 1995-02-09 Rohrmoser Alois Skifabrik Skibremse
GB8804402D0 (en) * 1988-02-25 1988-03-23 Emi Plc Thorn Display device
US8562145B2 (en) 2011-06-22 2013-10-22 3M Innovative Properties Company Display system and method for projection onto non-planar surfaces

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711188A (en) * 1970-06-10 1973-01-16 Visidyne Inc Compact optical display system
US3692399A (en) * 1970-06-23 1972-09-19 Stewart Filmscreen Corp Microfilm viewer
US3782805A (en) * 1972-11-30 1974-01-01 Qantix Corp Front projection screen made from a transparent material
US3846012A (en) * 1973-11-14 1974-11-05 Qantix Corp Transparent front projection screen having concave ridges thereon
JPS5345141B2 (de) * 1973-12-18 1978-12-04
US3941467A (en) * 1974-10-29 1976-03-02 Kaptron, Inc. Optical projector/reader

Also Published As

Publication number Publication date
MX148985A (es) 1983-08-05
DE2738658B2 (de) 1979-10-11
AT368640B (de) 1982-10-25
DE2738658A1 (de) 1978-03-16
JPS6210418B2 (de) 1987-03-06
ATA614277A (de) 1982-02-15
FR2413686A1 (fr) 1979-07-27
BE858178A (fr) 1977-12-16
GB1590679A (en) 1981-06-03
FR2413686B1 (de) 1984-05-18
ES461877A1 (es) 1978-12-01
DE2738658C3 (de) 1980-08-07
HK41884A (en) 1984-05-18
NL7709456A (nl) 1978-03-15
BR7705679A (pt) 1978-06-27
JPS5341227A (en) 1978-04-14
IN149132B (de) 1981-09-19

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Legal Events

Date Code Title Description
MKEX Expiry