A photographing optical lens assembly comprises, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. When the first and second inductive couplers are in the coupled position the inductive couplers can provide for the transmission of power andor communication between downhole tools in a bottom hole assembly. The structure further includes a second semiconductor strip, wherein the first and the second semiconductor strips are formed of the same semiconductor material. An elongated sleeve member is slidably mounted on the tube and preferably has a sealing gasket at its distal end which may be moved into sealing engagement with the coracoid process around the opening formed therein.