Title: Audio-visual slide projection system

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Claims: I claim:

1. A multiple slide projection system comprising:

A. a vertical array of individual slide projectors, each including a projection lens having a horizontal optical axis, a supply of slides and an indexing mechanism to transfer slides successively from the supply to an optical path leading to the projection lens for projection of slide images along said axis;

B. a vertical array of co-planar rear view screen sections to form a mosaic screen matrix adjacent the array of projectors, each section of the matrix lying in the vertical plane and being associated with a corresponding projector on the same level to present the slide image projected by said corresponding projector;

C. an upright V-shaped reflector assembly interposed between each screen section and its corresponding projector on the same array level, said each same-level assembly having an inclined front leg which faces the screen section and a reversely-inclined rear leg which faces the projection lens of the corresponding projector, each said front and rear leg of each assembly having mirrors on the upperside and the underside thereof, each said assembly being positioned in the optical axis of each projector and screen section so that the underside mirror on the rear leg receives an image from the lens and directs it downwardly onto the upperside mirror on the rear leg of the V-shaped reflector assembly on the level below, which mirror directs the image forwardly toward the upperside mirror on the front leg of the level-below assembly, which mirror directs the image upwardly onto the underside mirror on the front leg of the same-level assembly, which mirror in turn projects the image onto the assoicated screen section, whereby the opitical path between each lens and each screen section is substantially longer than the straight line distance therebetween.

2. A system as set forth in claim 1, further including programming means operatively coupled to the indexing mechanisms of the projectors to effect the selective presentation of slide images on the sections of the screen mosaic.

3. A system as set forth in claim 2, wherein said entire system is housed in a common cabinet whose front panel is defined by said mosaic.

4. A system as set forth in claim 3, wherein said cabinet is partitioned into cells to accommodate said projectors.

5. A system as set forth in claim 4, further including a tape play-back machine whose operation is coordinated by said programmer with the projectors to provide sounds to accompany the screen presentation.

6. A system as set forth in claim 1, wherein said lens is a narrow-angle lens.

7. A system as set forth in claim 3, wherein the width of said cabinet is less than 34 inches, whereby the cabinet may be passed through a doorway.

8. A system as set forth in claim 1, wherein said slide supply is held in a circular tray, making it possible to continuously recycle the presentation.

9. A system as set forth in claim 2, wherein said programmer means includes a multi-channel punched tape, one for each projector.

Other info:

Inventors: Schwartz, Robert C. (Woodmere, NY, US)

Application Number: 600000
Filing Date: 1975-07-29
Publication_date: 1976-09-21
Assignee: Motiva, Ltd. (New York, NY)
Primary Class(es): 353/15 353/37
Other Classes:
US Patent Ref:

1230188	Jun, 1917	McCormick	353/30.
2669901	Feb, 1954	Rehorn	353/99.
2851922	Sep, 1958	Rosen	353/76.
2882420	Apr, 1959	Koulicovitch	350/50.
3036496	May, 1962	Frederick	353/30.
3507571	Apr, 1970	White	353/15.
3804503	Apr, 1974	Sisson	353/15.
3822936	Jul, 1974	Troje	353/99.

Other Refs: 61,859

Oct, 1913	OE

Primary Examiner: Haroian, Harry N.
Assistant Examiner:
Attorney: