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

Claim 11:
12. 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 the first interior volume is configured to receive a first battery, and wherein the second interior volume is configured to receive a second battery.