Ultraminiature optical jack

An ultraminiature optical jack that is mounted on a circuit board, for receiving an optical plug having a length-to-diameter ratio of less than 4, said optical jack comprising:

• a substantially box-shaped resin-made body having formed integrally therewith on the front end side thereof a sleeve for receiving the optical plug and having in its rear end portion a luminous element housing section open in its rear end and bottom;
• two contact piece members formed of resilient metal and received if said body forward said luminous element housing section, said contact piece members having panel portions, resilient contact pieces extended from marginal edges of said panel portions for firmly holding therebetween a peripheral surface of said optical plug inserted in said sleeve, and terminal portions extended integrally from the lower marginal edges of said panel portions and projecting squarely outwardly from intermediate portions of the both sides of said body in its front-to-back direction, said terminal portions being soldered to said circuit board;
• a luminous element housed in said housing section and having a plurality of element terminals;
• and
• a metal cover fitted on said body to cover the top, both side surfaces and rear end face portion thereof and having a pair of soldering portions extended outwardly of both sides of said body from said metal cover, said pair of soldering portions being soldered to said circuit board.