Patent ID: 11873952
Assignee: GOOGLE LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC F  G  H  Y | IPC F  H

Claim 8:
9. A method of producing a uniform light output from a smart-home device, method comprising:
generating light from a plurality of Light-Emitting Diodes (LEDs) mounted to a circuit board and oriented to emit the light in a first direction that is perpendicular to a surface of the circuit board;
propagating the light through a circular light guide comprising:
a top surface that provides a substantially circular output surface that receives light from the plurality of LEDs transmitted through the circular light guide and outputs the light through the top surface; and
a bottom surface comprising:
a plurality of flat surfaces that are positioned adjacent to the plurality of LEDs; and
a plurality of tapered sections between each of the plurality of flat surfaces, wherein the plurality of tapered sections decrease a thickness of the circular light guide in the first direction between the plurality of flat surfaces; and

propagating the light from the circular light guide through a cover that forms a pressable button and shields a view of the top surface of the circular light guide from view outside of the smart-home device, wherein:
the light output through the top surface of the circular light guide illuminates the cover causing the cover to glow; and
pressing the cover causes the cover and the circular light guide to move closer to the plurality of LEDs, thereby causing the cover to glow brighter when pressed.