Patent ID: 7638758

Claim:
An electronic package comprising: a sealing-off housing ( 1 ) comprising a cap ( 1 a ), said cap ( 1 a ) being provided with at least one window ( 3 ), said cap ( 1 a ) being in one piece and said cap ( 1 a ) having an inner surface and a bottom ( 1 b ); at least one transceiver device ( 7 ) for generating light-based signals, said at least one transceiver device being arranged in said sealing-off housing ( 1 ) so that said light-based signals pass through said at least one window ( 3 ); and an optical element ( 2 ) extending over said at least one window and at least a portion of said inner surface of said cap ( 1 a ), wherein said portion of said inner surface of said cap ( 1 a ) contacts and is sealed with a sealing area ( 4 ) of said optical element; wherein said optical element comprises diffractive and refractive elements arranged in said optical element so that said light-based signals pass through said diffractive and refractive elements and said optical element seals off said at least one window; and wherein said portion of said inner surface of said cap ( 1 a ) that contacts said sealing area ( 4 ) of said optical element is an entire inner surface of said bottom ( 1 b ) of said cap ( 1 a ).