Optical filter comprising a variable transmittance layer
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United States of America Patent
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Mar 20, 2018
Issued Date -
N/A
app pub date -
Jan 18, 2017
filing date -
May 29, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A optical filter comprising a variable transmittance layer having a first spectrum in a dark state, and a second spectrum in a faded state; and a color balancing layer having a third spectrum; each of the first, second and third spectra comprising a visible portion; the first and third spectra combining to provide a dark state spectrum approximating a dark state target color; and the second and third spectra combining to provide a fades state spectrum approximating a faded state target color. The optical filter may further comprise a light attenuating layer. The optical filter may further comprise part of a laminated glass.
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International Classification(s)
- B60J:WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR S....
- E06B:FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDING....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G02C:SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY ....
- G02F:DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF ....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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