GB147404A - Improvements in or relating to means for exhibiting images from projecting apparatus - Google Patents

Improvements in or relating to means for exhibiting images from projecting apparatus

Info

Publication number
GB147404A
GB147404A GB25120A GB25120A GB147404A GB 147404 A GB147404 A GB 147404A GB 25120 A GB25120 A GB 25120A GB 25120 A GB25120 A GB 25120A GB 147404 A GB147404 A GB 147404A
Authority
GB
United Kingdom
Prior art keywords
mirrors
relating
projecting apparatus
dark chamber
screen
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
GB25120A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB25120A priority Critical patent/GB147404A/en
Publication of GB147404A publication Critical patent/GB147404A/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

Abstract

147,404. Silveira, A. de C. Jan. 3, 1920. Optical-projection apparatus.-A combination of two parallel mirrors inclined at 45 degrees receives and reflects images cast by a projector on a translucent screen cut off from light interference by enclosure in a dark chamber. In the constructions of Fig. 1, the kinematograph or lantern 1 projects through the dark chamber 2 on to the translucent screen 3 whence the image is reflected by mirrors 4, 5 and rendered visible to spectators in a building or in the open air. Two side walls may be provided between the screen and the mirrors 4 to prevent access of outside light.
GB25120A 1920-01-03 1920-01-03 Improvements in or relating to means for exhibiting images from projecting apparatus Expired GB147404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB25120A GB147404A (en) 1920-01-03 1920-01-03 Improvements in or relating to means for exhibiting images from projecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25120A GB147404A (en) 1920-01-03 1920-01-03 Improvements in or relating to means for exhibiting images from projecting apparatus

Publications (1)

Publication Number Publication Date
GB147404A true GB147404A (en) 1920-07-22

Family

ID=9701079

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25120A Expired GB147404A (en) 1920-01-03 1920-01-03 Improvements in or relating to means for exhibiting images from projecting apparatus

Country Status (1)

Country Link
GB (1) GB147404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989009431A1 (en) * 1988-03-31 1989-10-05 Arnotts Biscuits Limited Screen simulator window

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989009431A1 (en) * 1988-03-31 1989-10-05 Arnotts Biscuits Limited Screen simulator window
US5080481A (en) * 1988-03-31 1992-01-14 Arnotts Biscuits Limited Screen simulator window

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