Video projector system and design method therefor
AssigneeConocoPhillips Company
InventorsDennis B. Neff, Charles N. Sugg, John R. Grismore
Life of this patent
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Abstract
A video projection system employing a concave video screen which provides for enhanced depth cueing. A method of designing a variety of shapes of video screen surfaces by varying certain parameters of a common master equation. Video screen surface shapes providing optimum viewing for specific applications.
Claims39
A method of designing a concave 3D video screen surface extending generally inwardly from a front edge of the screen surface, said screen surface including an equator dividing the screen surface into a normally upper portion and a normally lower portion, said method including the steps of:
- (a) determining a maximum screen width (Xmax);
- (b) determining a maximum screen height above the equator (Zmax);
- (c) determining a rounded corner radius (rc) for the front face;
- and
- (d) calculating the location of a plurality of screen surface points by inputting Xmax, Ymax, Zmax, and rc into a master equation.
A concave 3D video screen comprising:
- a display surface having a shape at least substantially characterized by the following master equation:
- 4 y = ( [ 1 - ( [LeftBracketingBar] x [RightBracketingBar] P a P ) ] · b P ) 1 P , wherein a = X max 2 if [LeftBracketingBar] z [RightBracketingBar] < ( X max 2 - r c ) , a = ( X max 2 - r c ) + r c 2 - ( [LeftBracketingBar] z [RightBracketingBar] - ( X max 2 - r c ) ) 2 if [LeftBracketingBar] z [RightBracketingBar] ≥ ( X max 2 - r c ) , b = ( 1 - z 2 Z max 2 ) · ( X max 2 ) 2 , and P = 2 - ( k · [LeftBracketingBar] z [RightBracketingBar] Z max ) ,
- wherein Xmax is in a range of from about 6 inches to about 1200 inches,
- wherein Zmax is in a range of from about 0.1 Xmax to about 0.5 Xmax,
- wherein rc is in a range of from about 0 to about 0.5 Xmax,
- wherein k is in a range of from 0.1 to 0.95,
- wherein said screen surface extends relative to orthogonal X, Y, and Z axes,
- wherein x is the orthogonal distance from the Y-Z plane to the display surface,
- wherein y is the orthogonal distance from the X-Z plane to the display surface,
- wherein z is the orthogonal distance from the X-Y plane to the display surface, and
- wherein the actual position of each point defining the display surface varies by less than 0.1 Xmax from the calculated position of the point as defined by the master equation.
A 3D video projection system comprising:
- a housing;
- a concave video screen positioned in the housing;
- and
- a projector positioned in the housing and operable to project an image on the video screen,
- said housing having an opening therein through which the video screen can be viewed from outside the housing.
Dependencies are inferred from the claim text.