Glare Management of Reflective and Thermoreflective Surfaces
AssigneeRavenBrick LLC
InventorsRichard M. Powers, Wil McCarthy
Life of this patent
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Abstract
The reflectivity and transmissivity of building and vehicle surfaces is maintained while employing partial, variable, selective, or asymmetric diffusers between a surface and an external light source such that the reflected light is diffused to produce a reduction in glare, while minimally effecting the specular or collimated transmission (if any) of light through the surface. Glare is also reduced by utilizing diffuser devices that reflect light in a temperature dependent manner.
Claims14
1-22. (canceled)
A diffusive polarizing filter comprising
- a grid of wires with irregular surfaces placed in parallel at a regular spacing, wherein
- the surface irregularities are larger than wavelengths of incident light;
- and
- reflected light from the incident light of a first polarity is diffuse while transmitted light from the incident light of a second polarity is collimated.
A diffusive polarizing filter comprising
- a nonplanar substrate;
- and
- a grid of wires placed on the non-planar substrate, wherein
- reflection of incident light from the diffusive polarizing filter exhibits a dependency between an incident angle of the incident light and a departure angle of the incident light that varies with a contact location of the incident light on the substrate.
A glare-reducing polarizing filter comprising
- a grid of metamaterial wires, wherein
- the metamaterial wires form chiral structures;
- the grid is more diffusive to light passing through in a first direction than to light passing through in a second, opposite direction;
- and
- the grid passes collimated light in the second direction.
34-47. (canceled)
A method for producing a thermoreflective effect in a first direction and a thermoabsorptive effect in a second direction comprising
- interleaving layers of an absorptive polarizer film and a reflective polarizer film;
- and
- interposing a thermotropic depolarizer between a first set of layers of the absorptive polarizer film and the reflective polarizer film and a second set of layers of the absorptive polarizer film and the reflective polarizer film.
Dependencies are inferred from the claim text.