Patent ID: 7009916
Filing Date: 2006-03-07
Classification: G11B

Abstract:
1. An optical pickup device, comprising; a lead frame having an upper opening, a lower opening, an installation space formed between said upper opening and said lower opening; a laser source disposed within said installation space to emit a laser beam; an optical element disposed within said installation space to receive said laser beam, directing said laser beam through said upper opening toward an optical medium disposed above said lead frame, transmitting said beam reflected from said optical medium through lower side of said optical element, having a knife edge element formed on a portion of a surface of said optical element to block a portion of said beam reflected from said optical medium; a board disposed adjacent to said lower opening, attached a bottom surface of said lead frame; and a photo detector mounted on said board, facing said optical element to receive said beam passing through said optical element and said lower opening, detecting said beam to generate an electric signal.