Projection screen with retro-reflective calibration points, plac

Details Projection screen with retro-reflective calibration points, plac Projection screen with retro-reflective calibration points, plac

1996-07-23

1997-06-10

Malley, Daniel

Optical: systems and elements

Projection screen

359451, 359459, G03B 2156

Patent

active

056382081

ABSTRACT:
In a multiple-projector concave-screen display system, spacial alignment of images on the screen, is enabled by designating calibration points with retro-reflective dots and illumination markers. The manufacture of the screen involves locating calibration points and depositing the dots with a tool utilizing a rotary mechanism for loading and applying the dots from solenoid actuated pod units. Areas for retro-reflective dots, versus illumination markers, are defined on the basis of reflectance angles between vectors to the screen from a projector and from the screen to a viewer.

REFERENCES:
patent: 4597633 (1986-07-01), Fussell
patent: 4642945 (1987-02-01), Browning et al.
patent: 4991955 (1991-02-01), Vetter
patent: 5103339 (1992-04-01), Broome
patent: 5175575 (1992-12-01), Gersuk
patent: 5541769 (1996-07-01), Ansley et al.

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