US 12,109,941 B1
Windows with photoluminescent lighting
Clarisse Mazuir, San Jose, CA (US); and David E Kingman, San Francisco, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on May 19, 2022, as Appl. No. 17/748,946.
Claims priority of provisional application 63/231,665, filed on Aug. 10, 2021.
Int. Cl. B60Q 3/208 (2017.01); B32B 17/10 (2006.01); B60J 1/20 (2006.01); B60Q 1/26 (2006.01); B60Q 3/64 (2017.01); B60Q 3/68 (2017.01); B60Q 3/74 (2017.01); F21S 43/16 (2018.01); F21V 8/00 (2006.01)
CPC B60Q 3/208 (2017.02) [B60J 1/20 (2013.01); B60Q 3/64 (2017.02); B60Q 3/74 (2017.02); B32B 17/10541 (2013.01); B60Q 1/268 (2013.01); B60Q 3/68 (2017.02); F21S 43/16 (2018.01); G02B 6/0003 (2013.01); G02B 6/0063 (2013.01); G02B 6/0095 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A window configured to separate an interior region in a system from an exterior region surrounding the system, the window comprising:
first and second glass layers;
a waveguide interposed between the first and second glass layers and having a core surrounded by and in contact with cladding layers, wherein the core has a first refractive index and the cladding layers have a second refractive index that is lower than the first refractive index, and wherein the waveguide includes photoluminescent material doped into the core of the waveguide;
first and second ultraviolet-light-blocking filters, wherein the first and second glass layers are interposed between the first and second ultraviolet-light-blocking filters; and
a pump light source coupled to an edge of the waveguide, wherein the pump light source is configured to emit pump light that causes the photoluminescent material to luminesce and emit light with a yellow color cast, and wherein one of the first and second ultraviolet-light-blocking filters is a thin-film interference filter that has a blue color cast to offset the yellow color cast.