Device for generating annular pictures

Details Device for generating annular pictures Device for generating annular pictures

1997-10-09

1998-11-10

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359202, 359204, 359216, G02B 2608

Patent

active

058352520

ABSTRACT:
A device for generating a partial annular or an annular picture on a portion of a spherical projection surface by an annular mirror by which a light bundle generating this picture can be deflected onto the projection surface has a light source by which substantially parallel light bundles can be generated, a control unit for controlling the intensity of the light bundle, and a raster scanning device which is arranged in the light path between the annular mirror and the light source and which can raster scan the light bundle in two dimensions for the sequential illumination of picture points of the annular picture or partial annular picture.

REFERENCES:
patent: 3647956 (1972-03-01), Buck et al.
patent: 3669522 (1972-06-01), Anderson
patent: 5416630 (1995-05-01), Ito et al.
patent: 5546214 (1996-08-01), Black et al.
patent: 5557438 (1996-09-01), Schwartz et al.

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