Placement tool for retro-reflective calibration points

Details Placement tool for retro-reflective calibration points Placement tool for retro-reflective calibration points

1997-02-18

1998-10-20

Malley, Daniel P.

Optical: systems and elements

Projection screen

Curved

359443, G03B 2156

Patent

active

058255389

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: 4500163 (1985-02-01), Burns et al.

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