An electrically powered device is secured to the exterior surface of a handgun-mounted laser sight. The powered device includes a housing with two parallel arms that receive between them the laser sight housing. An plug on the inside surface of one arm enters and engages with a battery cavity in the housing to create a physical interference and connection between the powered device and the laser sight device housing. The plug includes electrical circuit elements to electrically connect the powered device to a battery within the cavity. The powered device is powered by connection with a battery contained in the laser sight device to which it is mounted.

A method of fabricating an opto-pyrotechnic initiator, includes a) forming a body having a cavity in which a pyrotechnic charge is to be received, the body also having an internal passage extending between the cavity containing the pyrotechnic charge and an inlet opening out in an outside face of the body; b) placing a first portion of an optical fiber in the internal passage of the body, with a second portion of the optical fiber extending beyond the inlet of the body, and a glass preform being interposed between the optical fiber and the inlet of the body; and c) applying heat treatment to the glass preform to raise the glass preform to a temperature higher than the melting point of the glass preform so as to form a hermetic sealing element made of glass between the optical fiber and the inlet of the body.

A method of fabricating an opto-pyrotechnic initiator, includes a) forming a body having a cavity in which a pyrotechnic charge is to be received, the body also having an internal passage extending between the cavity containing the pyrotechnic charge and an inlet opening out in an outside face of the body; b) placing a first portion of an optical fiber in the internal passage of the body, with a second portion of the optical fiber extending beyond the inlet of the body, and a glass preform being interposed between the optical fiber and the inlet of the body; and c) applying heat treatment to the glass preform to raise the glass preform to a temperature higher than the melting point of the glass preform so as to form a hermetic sealing element made of glass between the optical fiber and the inlet of the body.

The invention relates to sealable short-pathlength liquid transmission cells for Fourier-transform infrared spectroscopy applications. In exemplary embodiments, a liquid transmission cell with transmissions sections uses horizontal tubing for inserting and removing fluids from the cell. Angling the tubing relative to a top face of the cell allows small amounts of entrapped air to rise out of the optical path without blocking spectroscopy measurements. The tubing is silver-soldered to the body of the transmission cell to make a leak-free connection.

The invention relates to sealable short-pathlength liquid transmission cells for Fourier-transform infrared spectroscopy applications. In exemplary embodiments, a liquid transmission cell with transmissions sections uses horizontal tubing for inserting and removing fluids from the cell. Angling the tubing relative to a top face of the cell allows small amounts of entrapped air to rise out of the optical path without blocking spectroscopy measurements. The tubing is silver-soldered to the body of the transmission cell to make a leak-free connection.

An initiation device for initiation of an explosives charge, which comprises: a transceiver for receipt of wireless command signals; a control circuit for processing of wireless command signals received by the transceiver; and a light source that is suitable for initiation of the explosives charge and that is activated by the control circuit.

An initiation device for initiation of an explosives charge, which comprises: a transceiver for receipt of wireless command signals; a control circuit for processing of wireless command signals received by the transceiver; and a light source that is suitable for initiation of the explosives charge and that is activated by the control circuit.

An electrically powered device is secured to the exterior surface of a handgun-mounted laser sight. The powered device includes a housing with two parallel arms that receive between them the laser sight housing. An plug on the inside surface of one arm enters and engages with a battery cavity in the housing to create a physical interference and connection between the powered device and the laser sight device housing. The plug includes electrical circuit elements to electrically connect the powered device to a battery within the cavity. The powered device is powered by connection with a battery contained in the laser sight device to which it is mounted.

An electrically powered device is secured to the exterior surface of a handgun-mounted laser sight. The powered device includes a housing with two parallel arms that receive between them the laser sight housing. An plug on the inside surface of one arm enters and engages with a battery cavity in the housing to create a physical interference and connection between the powered device and the laser sight device housing. The plug includes electrical circuit elements to electrically connect the powered device to a battery within the cavity. The powered device is powered by connection with a battery contained in the laser sight device to which it is mounted.

A method of fabricating an opto-pyrotechnic initiator, includes a) forming a body having a cavity in which a pyrotechnic charge is to be received, the body also having an internal passage extending between the cavity containing the pyrotechnic charge and an inlet opening out in an outside face of the body; b) placing a first portion of an optical fiber in the internal passage of the body, with a second portion of the optical fiber extending beyond the inlet of the body, and a glass preform being interposed between the optical fiber and the inlet of the body; and c) applying heat treatment to the glass preform to raise the glass preform to a temperature higher than the melting point of the glass preform so as to form a hermetic sealing element made of glass between the optical fiber and the inlet of the body.