Position detector, door opening detection device and associated method

A position detector for monitoring position of an object comprising:

• a body defining an input designed to receive an optical fiber delivering a first light signal,
• an output delivering a signal representative of the position of the object to be monitored,
• a mirror mounted so as to be movable inside the body and relative to the input between a first position and a second position, the first position or the second position ensuring the transmission of the light signal from the input to the output to form a light signal representative of the position of the object, the other position among the first position and the second position preventing the transmission of the light signal to the output,
• a first spring mounted in the body and configured to place the mirror in the first position,
• an end piece movable relative to the body between a first position and a second position along a direction of movement and designed to cooperate with the object to be monitored, the end piece being mechanically connected to the mirror so that:
• when the end piece is in the first position, the mirror is in the first position,
• when the end piece is in the second position, the mirror is in the second position,
• displacement of the end piece from the first position to the second position causes the mirror to move from the first position to the second position, so that the mirror comes to rest against the optical fiber in the position ensuring the transmission of the light signal.