Abstract: The invention relates to a protection device for protecting the connection between a detachable wired drone (1) and the wire (5) thereof. This device enables the plug (3) to be reused even when it has fallen many times from a great height and limits the risk of injury and electrocution of people. The device consists of a non-conductive envelope surrounding the electrical contacts of the plug (3), a procedure or a mechanical system that cuts off the power when the plug (3) is detached from the drone (1), a system for mechanical protection against impacts, which can be an energy-dissipating envelope, a parachute-like system (4) for slowing down the fall, or the separation of the plug into a plurality of parts connected by a flexible element. The device according to the invention is particularly applicable to wired drones (1) in order to speed up movement outside the perimeter defined by the wire (5).

Abstract: An optical device is mounted to an electronic circuit having a main face with at least one light source. The optical device is made from a block which includes, for each light source, a corresponding opening that passes through the block. The opening includes a cylindrical part with a threading on an inside surface.

Abstract: An optical device is mounted to an electronic circuit having a main face with at least one light source. The optical device is made from a block which includes, for each light source, a corresponding opening that passes through the block. The opening includes a cylindrical part with a threading on an inside surface.