Input device

An input device comprising:

• a main body, including:
• (i) a grip having comprising a first end, a second end that is opposite to the first end, wherein the grip comprises and a light-emitting unit;
• (ii) an operation region disposed proximate to the first end of the grip of the main body, and including a plurality of operation units for manipulation by a user's fingers while holding the grip;
• and
• a tracked unit including:
• a plurality of light-emitting units;
• a curved member extending from a first position proximate to the operation region at the first end of the grip to a second position at the second end of the grip;
• a first outer surface provided with a first light-emitting unit disposed along the tracked unit between the first position and the second position, the first outer surface extending in an extending direction of the tracked unit;
• a second outer surface provided with a second light-emitting unit disposed along the tracked unit between the first position and the second position, the second outer surface extending in the extending direction of the tracked unit;
• and
• a light shield portion having an outward facing surface and an opposing inward facing surface, and including an outwardly curved section located between the first light-emitting unit and the second light-emitting unit, which are adjacent to one another, wherein:
• the first outer surface and the second outer surface are arranged side by side such that respective normal directions thereof are substantially perpendicular to one another and substantially transverse to the extending direction of the tracked unit,
• the first light-emitting unit faces a first direction corresponding to the respective normal direction of the of the first outer surface, the second light-emitting unit faces a second direction corresponding to the respective normal direction of the of the second outer surface, and the first direction and the second direction are substantially orthogonal to one another, and
• a distance from an apex portion of the light shield portion to a line extending between the first light-emitting unit and the second light-emitting unit is greater than a diameter of at least one of the first light-emitting unit and the second light-emitting unit.