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DE644207C - Projection device - Google Patents

Projection device

Info

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
Application number
DEK135337D
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.)
GUSTAV KOEGEL DR ING
Original Assignee
GUSTAV KOEGEL DR ING
Publication date
Priority to DEK135337D priority Critical patent/DE644207C/en
Application granted granted Critical
Publication of DE644207C publication Critical patent/DE644207C/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

Landscapes

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

Patentanspruch:Claim: Projektionseinrichtung, bestehend aus einem Projektionsapparat und einem Hohlspiegel, der sich zwischen dem Projektionsobjektiv und der Bildauf fangfläche befindet, dadurch gekennzeichnet, daß der Hohlspiegel (S) so angeordnet und von solcher Größe ist, daß sich das auf den Schirm (B) projizierte Bild durch den im Abbildungsstrahlengang befindlichen Hohlspiegel CSi auch betrachten läßt.Projection device, consisting of a projection apparatus and a concave mirror, which is located between the projection lens and the image capture surface, characterized in that the concave mirror (S) is arranged and of such a size that the image projected onto the screen (B) passes through the concave mirror CSi located in the imaging beam path can also be viewed. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEK135337D Projection device Expired DE644207C (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE905680C (en) * 1948-10-02 1954-03-04 Blaupunkt Elektronik G M B H Reading device

Cited By (1)

* Cited by examiner, † Cited by third party
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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