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US 11,231,602 B2Granted
Transparent projection screen
AssigneeInnovega, Inc.
InventorsMark Freeman, Jay Marsh, Jerome Legerton
Life of this patent
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Abstract
According to some embodiments, a transparent screen includes a first transparent substrate having a first transparent substrate index of refraction and including a surface relief pattern, a partially reflective coating formed on the surface relief pattern, and a second transparent substrate bonded over the partially reflective coating with an optical adhesive having the first transparent substrate index of refraction.
Claims10
A transparent screen comprising:
- a first transparent substrate having a first transparent substrate index of refraction and including a surface relief pattern forming a random scattering surface having a spatial frequency spectrum that is substantially flat over a range of spatial frequencies in a frequency range including spatial frequencies having a wavelength of visible light;
- a partially reflective coating formed on the surface relief pattern;
- and
- a second transparent substrate bonded over the partially reflective coating with an optical adhesive having the first transparent substrate index of refraction.
1 more element
Dependencies are inferred from the claim text.