ILLUMINATION STRUCTURE FOR UNIFORM ILLUMINATION OF KEYS

摘要

Described is an illumination structure for a key of a keyboard. The illumination structure is used to uniformly illuminate the key and any glyphs that are present on the key. The illumination structure includes a light guide having various features that increase total internal reflection and also illuminate the glyphs of the key.

主权项

1. A key comprising:
a compressible dome; a keycap positioned above the compressible dome; a light emitting element; and a light guide positioned at least partially around the compressible dome and optically coupled to the light emitting element, the light guide comprising:
a light-directing feature operative to direct light from the light emitting element around the light guide;a set of reflection features operative to reflect the light internally around the light guide; anda set of illumination features operative to illuminate the keycap.