CA971781A - Projection display device - Google Patents

Projection display device

Info

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
Application number
CA150,690A
Other versions
CA150690S (en
Inventor
Adnan Waly
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.)
Personal Communications Inc
Original Assignee
Personal Communications Inc
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 Personal Communications Inc filed Critical Personal Communications Inc
Application granted granted Critical
Publication of CA971781A publication Critical patent/CA971781A/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
    • 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)
CA150,690A 1971-09-01 1972-08-31 Projection display device Expired CA971781A (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE2243234A1 (en) 1973-03-08
JPS4835825A (en) 1973-05-26

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