Patent ID: 11943583
Assignee: XMEMS LABS, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 23:
24. A headphone, comprising:
a first acoustic transducer configured to generate a first acoustic wave, wherein the first acoustic transducer is a MEMS (Micro Electro Mechanical Systems) fabricated speaker; and
a spreading structure comprising a body and a cover disposed on the body, wherein the body comprises an inner channel structure and an outer expanding structure;
wherein the spreading structure is disposed over the first acoustic transducer and configured to guide the first acoustic wave to propagate through a sound passage formed within the spreading structure;
wherein a directionality of the first acoustic wave is spread at a sound outlet of the spreading structure after the first acoustic wave propagates through the sound passage in the spreading structure;
wherein a size of an inner channel formed within the inner channel structure is gradually narrower from a sound inlet toward an end of the inner channel facing the cover;
wherein the outer expanding structure comprises a sidewall portion;
wherein the sidewall portion has a shape such that a size of an outer channel formed between the cover and the outer expanding structure is gradually wider from a bottom of the outer expanding structure toward the sound outlet.