Actuator using comb-tooth

An actuator for displacing a moving device in a predetermined direction with respect to a fixing device, comprising:

• a first coupling device whose one edge side is rotatably connected to a first connection point disposed on said fixing device and whose other edge side is rotatably connected to a second connection point disposed on said moving device;
• a second coupling device whose one edge side is rotatably connected to a third connection point disposed on said fixing device and whose other edge side is rotatably connected to a fourth connection point disposed on said moving device;
• a first comb tooth-like base point disposed on said first coupling device;
• a first comb tooth whose rear anchor side is connected to said first comb tooth-like base point and whose tip side extends along a rotational trajectory of said first comb tooth-like base point drawn by rotation around the first connection point of said first coupling device;
• and
• a second comb tooth whose rear anchor side is connected to said fixing device and whose tip side extends in accordance with a curve of said first comb tooth, said second comb tooth facing said first comb tooth at a predetermined interval;
• a second comb tooth-like base point disposed on said first coupling device;
• a third comb tooth whose rear anchor side is connected to said second comb tooth-like base point and whose tip side extends along a rotational trajectory of said second comb tooth-like base point drawn by rotation around the second connection point of said first coupling device;
• and
• a fourth comb tooth whose rear anchor side is connected to said moving device and whose tip side extends in accordance with a curve of said third comb tooth, said fourth comb tooth facing said third comb tooth at a predetermined interval,
• a length between the first connection point and the second connection point being equal to a length between the third connection point and the fourth connection point, a length between the first connection point and the third connection point being equal to a length between the second connection point and the fourth connection point.