Lamp, especially flash-light, has aluminum seal closing tubular container

摘要

A flash-light has a tubular container (10) made of zone-wise transparent material with a first opening (13) closed by a metallic, preferably aluminum first seal (11). The surface of the first seal facing the container cavity (17) has a convex shaped zone (19) : Independent claims are also included for the following. (1) the production of a flash-light; (2) a wireless telecommunications appliance for sending and receiving information using the lamp; and (3) a photo-apparatus containing the lamp.