Patent ID: 8955995
Filing Date: 2015-02-17
Classification: G02B,H01H

Abstract:
1. A key lighting assembly for lighting one or more keys on an electronic device, the assembly comprising: a keycap, defining a key, the keycap having a non-opaque portion to identify the key; a light guide, the light guide being mounted in spaced relation with the keycap; an optical radiation source optically coupled to the light guide; and a first opaque layer disposed on a first surface of the light guide, the first opaque layer defining a first opaque layer opening for passing optical radiation from the light guide to the keycap, the first opaque layer opening being located to permit optical radiation to be transmitted from the light guide to the non-opaque portion, wherein the light guide and the keycap define a gap between an interior surface of the keycap and the first surface of the light guide and wherein the first opaque layer opening passes optical radiation through the gap to the keycap.