Connector for optical fibres comprising: a. a so-called female part, comprising a body (110, 510) with a front face and a reception well comprising: ai. a guiding socket (130, 530); aii. a so-called female fin, comprising an optical fibre contained in a ferrule (140, 441, 540) held in a tubular body (150, 451, 550) fitted into the guiding socket (130, 530) and terminated at its contact end by a lens; b. a so-called male part, comprising a body comprising a guiding well, a so-called male pin, comprising an optical fibre contained in a ferrule held in a tubular body of a diameter fitted to the bore diameter of the guiding socket of the female part and terminated at its contact end by a lens; c. means (195, 295) for coupling the female part with the male part, • the reception well comprises a spring applying on said pin an axial sliding force in relation to the reception well between a so-called free axial position of said pin in which the lens is flush with the front face of the body, and a so-called engaged axial position, in which the lens is retracted into the guiding socket, by a distance equal to or greater than a diameter of the pin while remaining centred in said guiding socket over a length equal to or greater than a diameter of the pin, • the body of the male part comprises a spring applying on said male pin an axial sliding force in relation to the guiding well between a so-called free axial position, in which said pin protrudes relative to the front face of the male part by a distance greater than a diameter of the pin, and a so-called engaged position, in which, the male part being connected to the female part of the connector, the male part penetrates into the guiding socket by a distance equal to or greater than a diameter of said pin. a. a so-called female part, comprising a body (110, 510) with a front face and a reception well comprising: ai. a guiding socket (130, 530); aii. a so-called female fin, comprising an optical fibre contained in a ferrule (140, 441, 540) held in a tubular body (150, 451, 550) fitted into the guiding socket (130, 530) and terminated at its contact end by a lens; ai. a guiding socket (130, 530); aii. a so-called female fin, comprising an optical fibre contained in a ferrule (140, 441, 540) held in a tubular body (150, 451, 550) fitted into the guiding socket (130, 530) and terminated at its contact end by a lens; b. a so-called male part, comprising a body comprising a guiding well, a so-called male pin, comprising an optical fibre contained in a ferrule held in a tubular body of a diameter fitted to the bore diameter of the guiding socket of the female part and terminated at its contact end by a lens; c. means (195, 295) for coupling the female part with the male part, • the reception well comprises a spring applying on said pin an axial sliding force in relation to the reception well between a so-called free axial position of said pin in which the lens is flush with the front face of the body, and a so-called engaged axial position, in which the lens is retracted into the guiding socket, by a distance equal to or greater than a diameter of the pin while remaining centred in said guiding socket over a length equal to or greater than a diameter of the pin, • the body of the male part comprises a spring applying on said male pin an axial sliding force in relation to the guiding well between a so-called free axial position, in which said pin protrudes relative to the front face of the male part by a distance greater than a diameter of the pin, and a so-called engaged position, in which, the male part being connected to the female part of the connector, the male part penetrates into the guiding socket by a distance equal to or greater than a diameter of said pin. • the reception well comprises a spring applying on said pin an axial sliding force in relation to the reception well between a so-called free axial position of said pin in which the lens is flush with the front face of the body, and a so-called engaged axial position, in which the lens is retracted into the guiding socket, by a distance equal to or greater than a diameter of the pin while remaining centred in said guiding socket over a length equal to or greater than a diameter of the pin, • the body of the male part comprises a spring applying on said male pin an axial sliding force in relation to the guiding well between a so-called free axial position, in which said pin protrudes relative to the front face of the male part by a distance greater than a diameter of the pin, and a so-called engaged position, in which, the male part being connected to the female part of the connector, the male part penetrates into the guiding socket by a distance equal to or greater than a diameter of said pin.