Patent ID: 7012762

Claim:
A micro optical pickup head module, comprising: a transparent substrate having a first surface and a second surface; at least two Fresnel lenses formed on the first surface of the transparent substrate; a first mirror placed on the first surface of the transparent substrate in an acute included angle between each other and being over one of the Fresnel lenses; a first metal layer formed on the surface of the first mirror opposite to the acute included angle for half refracting light and half reflecting light; a second mirror placed on the first surface of the transparent substrate in an acute included angle between each other and being over the other one of the Fresnel lenses; a second metal layer formed on the surface of the second mirror opposite to the acute included angle and for reflecting light; a laser diode placed on the second surface of the transparent substrate and opposite to the second mirror; and a photo detector placed on the second surface of the transparent substrate and opposite to the first mirror.