초록 ▼

A photopyrotechnical detonating device and a photopyrotechnical chain using this device are disclosed. A pyrotechnical charge, which can be actuated by a laser beam, is placed in a solid body. The beam is conveyed by an optical fiber which penetrates a connector mounted on the body. The beam, which

A photopyrotechnical detonating device and a photopyrotechnical chain using this device are disclosed. A pyrotechnical charge, which can be actuated by a laser beam, is placed in a solid body. The beam is conveyed by an optical fiber which penetrates a connector mounted on the body. The beam, which is divergent when it leaves the fiber, is made parallel by a first lens. A second lens, mounted on the body, makes the beam converge and works with a transparent barrier to focus the beam on a given point. Tight-sealilng means are provided between the transparent barrier and the body of the device, thus ensuring the containment of the charge. The transparent barrier is shaped like a truncated cone which maintains its integrity within a tapered cylinder after firing of the actuating and boosting charges. The tightness of the transparent barrier within the tapered cylinder is enhanced by the sealing means and prevents fragments from entering the detonating device after firing of the charges.

대표청구항 ▼

A photopyrotechnical detonating device comprising a body with: a cavity to house a pyrotechnical charge, an input for an energy beam of a given wavelength, used to actuate this charge, and a passage for the energy beam between said input and the cavity, said photopyrotechnical device further compris

A photopyrotechnical detonating device comprising a body with: a cavity to house a pyrotechnical charge, an input for an energy beam of a given wavelength, used to actuate this charge, and a passage for the energy beam between said input and the cavity, said photopyrotechnical device further comprising: a transparent barrier placed in the passage, in the path of the beam, said barrier withstanding the effects of mechanical forces generated during the operation of the charge and being made of a material which is transparent to the wavelength of this beam, and having a first surface on the input side and a second surface on the pyrotechnical charge side, its position and the shape of its two surfaces being defined so as to focus, on a given point, a parallel energy beam, having said given wavelength and penetrating this transparent barrier through its first surface, and tight-sealing means between this barrier and the body of the device, wherein the transparent barrier has the shape of a truncated cone that widens out towards the cavity, and wherein the tight-sealing means constitute an O-ring seal.