Electronic device

An electronic device, comprising:

• a case having a first chamber and a second chamber arranged outside the first chamber, wherein the case has a thru-hole arranged between the first chamber and the second chamber;
• a translucent trough connected to the case and arranged in the first chamber, wherein a space surroundingly defined by the translucent trough is in air communication with the second chamber through the thru-hole, and the translucent trough is configured to separate the space and the second chamber from the first chamber;
• a manipulation ring disposed on the case and including a driving portion facing the case;
• a rotational unit including:
• a shaft inserted into the space of the translucent trough by passing through the thru-hole, wherein the shaft has a first segment arranged in the space of the translucent trough and a second segment arranged in the thru-hole;
• and
• a mating member arranged in the second chamber and connected to a portion of the shaft away from the first segment, wherein the mating member and the shaft are synchronously rotatable along a central axis of the shaft, the mating member is abutted against the driving portion, and the manipulation ring is spinable to rotate the mating member by the driving portion;
• and
• an optical tracking system (OTS) sensor arranged in the first chamber, wherein the OTS sensor is corresponding in position to the first segment for detecting a rotating angle of the first segment.

An electronic device, comprising:

• a case having a chamber and a thru-hole in air communication with an interior space and an exterior space of the chamber;
• a manipulation ring disposed on the case and including a driving portion facing the case;
• a rotational unit including:
• a shaft passing through the thru-hole, wherein the shaft has a first segment arranged in the chamber and a second segment arranged in the thru-hole;
• and
• a mating member arranged outside the chamber and connected to a portion of the shaft away from the first segment, wherein the mating member and the shaft are synchronously rotatable along a central axis of the shaft, the mating member is abutted against the driving portion, and the manipulation ring is spinable to rotate the mating member by the driving portion;
• a waterproof member configured to seal a gap between the second segment of the shaft and an inner wall of the case defining the thru-hole;
• and
• an optical tracking system (OTS) sensor arranged in the chamber, wherein the OTS sensor is corresponding in position to the first segment for detecting a rotating angle of the first segment.