Patent ID: 11867983
Assignee: MITSUI CHEMICALS, INC.
Field: Optics (Instruments)
Classification: CPC G  H  Y | IPC G  H

Claim 0:
1. A power supply unit configured to detachably couple to an eyewear, the power supply unit comprising:
a first housing portion defining a first interior volume;
a second housing portion defining a second interior volume that is different than the first interior volume; and
a narrow portion positioned between the first housing portion and the second housing portion, wherein the narrow portion is narrower than the first housing portion and the second housing portion,
wherein at least one of the first housing portion, the second housing portion, or the narrow portion is exposed when the power supply unit is coupled to the eyewear,
wherein a side surface of the narrow portion is located inside the power supply unit in a plan view as compared with a side surface of the first housing portion.