Separated functional layer stack and titanium nitride layer for achieving solar control
OwnerYisheng Dai, Yeo Boon Khee +1inventors
InventorsYisheng Dai, Yeo Boon Khee, Sicco W.T. Westra
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Abstract
A solar control member for determining solar control for a window includes an optically massive layer between an optically functional layer stack and a titanium nitride layer. The optically massive layer has sufficient thickness to retard or prevent constructive and destructive interference of reflected light. The optically massive layer may be an adhesive, but also may be one or more polymeric substrates. The layer stack may be a Fabry-Perot interference filter. Also in the preferred embodiment, the titanium nitride layer is closer to the window (e.g., glass) than the layer stack.
Claims17
A solar control member comprising:
- an optically functional layer stack that is generally transparent with respect to visible light and that has a wavelength selectivity for solar control;
- an optically massive layer, said optically functional layer stack being on a first side of said optically massive layer;
- and
- a titanium nitride layer on a second side of said optically massive layer opposite to said optically functional layer stack, said titanium nitride layer being configured to cooperate with said optically functional layer stack for solar selectivity.
A method of providing a solar control member comprising:
- forming an optically functional layer stack on a first side of an optically massive layer, including selecting and configuring said optically functional layer stack to achieve target optical properties at said first side;
- and
- increasing solar rejection while retaining control over visible cracking by forming a titanium nitride layer on a side of said optically massive layer opposite to said first side.
A solar control member consisting essentially of:
- a transparent substrate;
- an optical coating on a first side of said transparent substrate, said optical coating including a Fabry-Perot filter layer;
- and
- a titanium-nitride layer on a second side of said transparent substrate.
Dependencies are inferred from the claim text.