Projection-receiving surface comprising a single sheet formed into a plurality of catenoid-like mirrorlettes
AssigneeMerlin Technology Limited Liability Company
InventorPeter D. Poulsen
Life of this patent
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Abstract
The present invention is a broadband projection-receiving surface that can function as a projection screen. This surface can, even in strong ambient light, provide high gain, prevent glare and speckle, provide high contrast, preserve of gray-scale linearity, provide a uniformity of brightness, provide rapid angular cut-off, preserve polarization, and provide the ability to function over a large spectral range. These achievements result from a production method that utilizes purposeful partitioning of the material processes used in sub-wavelength morphology (finish) from the processes used to make super-wavelength morphology (figure).
Claims26
A projection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface has a polarization ratio of greater than 250:1.
A projection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet:
- wherein the projection-receiving surface has a polarization ratio of greater than 500:1.
A projection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface has an angular cut-off rate of 99% per degree at the viewing volume edge.
A projection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface has an angular cut-off rate between 10% and 99% per degree at the viewing volume edge.
A projection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface has an in-viewer-volume scattering ratio ranging from between 0.05 steradian to 0.01 per steradian.
A projection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface has a gray-scale linearity metric ranging greater than 0.50 in direct sunlight.
A projection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface has a gray-scale linearity metric ranging greater than 0.75 in indirect sunlight.
A projection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface has a gray-scale linearity metric ranging greater than 0.9 in subdued room light.
A projection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface has a gray-scale linearity metric ranging greater than 0.98 in a dark theatre.
A projection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface has desaturation below 10% in a darkened environment.
Aprojection-receiving surface, comprising:
- a single sheet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface maintains color saturation in direct, off-axis sunlight to within 25%, and maintains color saturation in a darkened room to within 2%.
projection-receiving surface, comprising:
- a,single skeet formed into a plurality of catenoid-like mirrorlettes, said sheet having a first side and a second side;
- and
- a solid filler attached to one of said first side and said second side of said single sheet;
- wherein the projection-receiving surface achieves an averaged modulation transfer function that is relatively flat within 0.05 throughout the image space from zero spatial frequency up to a spatial frequency of one-inverse screen cell in a darkened room, and flat to 0.15 in a lighted room.
Dependencies are inferred from the claim text.