DE332355C - Projection screen - Google Patents

Projection screen

Info

Publication number
DE332355C
DE332355C DE1918332355D DE332355DD DE332355C DE 332355 C DE332355 C DE 332355C DE 1918332355 D DE1918332355 D DE 1918332355D DE 332355D D DE332355D D DE 332355DD DE 332355 C DE332355 C DE 332355C
Authority
DE
Germany
Prior art keywords
projection screen
fabric
delicately
exposure
translucent glass
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
DE1918332355D
Other languages
German (de)
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.)
ALFRED SCHWAHN
Original Assignee
ALFRED SCHWAHN
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 ALFRED SCHWAHN filed Critical ALFRED SCHWAHN
Application granted granted Critical
Publication of DE332355C publication Critical patent/DE332355C/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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Description

Projektionsschirm. Gegenstand der Erfindung ist ein Projektionsschirm aus Glasfadengewebe, der für Durchprojektion und für Vorderbelichtung Verwendung finden soll.Projection screen. The invention relates to a projection screen made of glass fiber fabric, which is to find g for rear projection and front exposure Verwendun.

Der Schirm besteht ans einem lichtdurchlässigen Glasfadengewebe in weißgelblichen, blä ulichweißen, also in zartfarbigen sowie in farbfreien Tönungen, das auf einen Rahmei es pannt ist. Wird es von rückwärts belichtet, sc) scheint das Bild hindurch Lind istauch im Tageslichte sehr hell. Deckt man dagegen die Rückseite mit dunklem Stoff, Papier o. dgl. ah und belichtet von vorn, so erhält man ein gleichfalls sehr helles Bild bei wesentlich geringerem Stromverbrauch als bei den bekannten Schirmen.The shade is ans a translucent glass fiber fabric in white yellowish, Blä explanatory white, so in delicately colored as well as ink-free tints, it's panning one to a Rahmei. If it is exposed from backwards, sc) the picture shines through and is also very bright in daylight. If, on the other hand, one covers the back with dark fabric, paper or the like and exposes it from the front, one obtains an equally very bright picture with much less Power consumption than with the known umbrellas.

Claims (2)

PATENTANSPRÜCHE: i. Projektionsschirm, bestehend aus einem Gewebe von farblosen oder zartgetönten, lichtdurchlässdgen Glasfäden. PATENT CLAIMS: i. Projection screen, consisting of a fabric of colorless or delicately tinted, translucent glass threads. 2. Projektionsschirm nach Anspruch i, hinterlegt mit dunklem Stoff für Belichtung von vorn.2. Projection screen according to claim i, backed with dark material for exposure from the front.
DE1918332355D 1918-07-07 1918-07-07 Projection screen Expired DE332355C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE332355T 1918-07-07

Publications (1)

Publication Number Publication Date
DE332355C true DE332355C (en) 1921-01-28

Family

ID=6202764

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1918332355D Expired DE332355C (en) 1918-07-07 1918-07-07 Projection screen

Country Status (1)

Country Link
DE (1) DE332355C (en)

Similar Documents

Publication Publication Date Title
DE332355C (en) Projection screen
US1742680A (en) Method of making motion pictures
DE464519C (en) Process for the production of self-luminous pictures, sculptures and the like that appear three-dimensional in the dark like
DE852969C (en) Flat-shaped reflector
DE619541C (en) Focal plane shutter for photographic cameras
DE414759C (en) Optical observation instrument
DE630203C (en) See-through angle and top view finder
DE352969C (en) Installation on lampshades, banners, stained glass etc. like
US1462481A (en) Obmamental trabtspaeeucy
AT79263B (en) Headlight cover with adjustable opening.
DE1016371B (en) Ambient light-proof lamp, especially for motor vehicles
US997899A (en) Projection-screen.
DE821604C (en) A film presentation device consisting of a projection device and a projection surface, in particular a single-housing film viewer
DE596246C (en) Photographic paper
GB487157A (en) Improvements in or relating to projection screens for use in television, cinematography, telecinematography or the like
DE719421C (en) Luminous traffic sign
DE605235C (en) Process for the gradation adjustment of partial color negatives obtained by means of superimposed emulsion layers with different silver content
DE582187C (en) Projection apparatus, especially for illuminated advertising, with a screen that periodically covers the image
DE597234C (en) License plate for motor vehicles
DE603361C (en) Process for the preparation of duplicate photographic negatives
AT130258B (en) Projection methods, in particular for stage and film purposes.
DE898543C (en) Procedure for matching color copies for rear projection
US862055A (en) Transparency.
DE449712C (en) Illuminated advertising sign made of a glass plate through which a light source located in cross section shines through
GB375640A (en) Improvements in or relating to the production of cinematographic films