DE644207C - Projection device - Google Patents
Projection deviceInfo
- Publication number
- DE644207C DE644207C DEK135337D DEK0135337D DE644207C DE 644207 C DE644207 C DE 644207C DE K135337 D DEK135337 D DE K135337D DE K0135337 D DEK0135337 D DE K0135337D DE 644207 C DE644207 C DE 644207C
- Authority
- DE
- Germany
- Prior art keywords
- concave mirror
- projection device
- projection
- screen
- image
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Projection Apparatus (AREA)
Description
Es sind bereits Projektionseinrichtungen bekannt, bei denen zwischen dem Projektionsobjektiv und der Bildauf fangfläche ein Hohlspiegel angeordnet ist. Außerdem sind bereits Projektionseinrichtungen bekannt, bei denen das auf einen Schirm geworfene Bild in einem Hohlspiegel betrachtet wird.There are already projection devices known, where between the projection lens and the image catching surface a concave mirror is arranged. In addition, projection devices are already known in which the image projected on a screen is viewed in a concave mirror.
Diesen bekannten Einrichtungen gegenüber besteht die Erfindung darin, daß der Hohlspiegel so angeordnet und von solcher Größe ist, daß sich das auf den Schirm projizierte Bild durch den im Abbildungsstrahlengang befindlichen Hohlspiegel auch betrachten läßt. Dadurch, daß sich der Hohlspiegel sowohl im Abbildungs- als auch im Betrachtungsstrahlengang befindet, wird der plastische Bildeindruck erhöht.Over against these known devices, the invention is that the Concave mirror is so arranged and of such a size that it is projected onto the screen Also view the image through the concave mirror in the imaging beam path leaves. The fact that the concave mirror is both in the imaging and in the The viewing beam path is located, the three-dimensional image impression is increased.
Auf der Zeichnung ist die Erfindung schematisch dargestellt.The invention is shown schematically in the drawing.
Ein reflektierender, glänzender oder mat- ao tierter Schirm B ist so in den Projektionsstrahlengang eingeschaltet, daß das von dem Projektionsapparat P kommende Bild direkt durch den Hohlspiegel 5 auf dem genannten Schirm B scharf abgebildet und dann von dem Hohlspiegel 5 nach AK reflektiert wird.A reflective, glossy or matted screen B is switched into the projection beam path in such a way that the image coming from the projection apparatus P is sharply imaged directly through the concave mirror 5 on the screen B mentioned and then reflected by the concave mirror 5 to AK.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK135337D DE644207C (en) | Projection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK135337D DE644207C (en) | Projection device |
Publications (1)
Publication Number | Publication Date |
---|---|
DE644207C true DE644207C (en) | 1937-04-26 |
Family
ID=7248344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK135337D Expired DE644207C (en) | Projection device |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE644207C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE905680C (en) * | 1948-10-02 | 1954-03-04 | Blaupunkt Elektronik G M B H | Reading device |
-
0
- DE DEK135337D patent/DE644207C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE905680C (en) * | 1948-10-02 | 1954-03-04 | Blaupunkt Elektronik G M B H | Reading device |
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