US Patent 12105312 Light emitting module for luminous keyboard

A light emitting module includes a light-guiding plate disposed under a light-shielding plate that includes a light-shielding portion and a hollow unit. The light-guiding plate has a light-exiting surface, a bottom surface, and a light-entering surface unit. The light-exiting surface has a base portion and a light-mixing portion. The light-mixing portion is formed on the base portion, is disposed within the hollow unit, and has refracting segments. Each of the refracting segments extends and tapers upwardly from the base portion. A reflection plate is disposed under the bottom surface. A plurality of light emitting members are disposed below the light-shielding portion. The light-entering surface unit faces the light emitting members.