Micro-optical pickup

A micro-optical pickup, comprising:

• a silicon substrate;
• a laser diode configured on said silicon substrate to emit a laser light;
• a dynamic grating splitting said laser light into a multi-beam laser light;
• a scratch drive actuator connecting said silicon substrate and said dynamic grating to lift said dynamic grating on or off a axis of said laser light emitted by said laser diode;
• and
• a beam splitter, a Fresnel focus lens and a 45 degree inclined reflective mirror configured on said silicon substrate and arranged in order on said axis of said laser light emitted by said laser diode, wherein said laser light or said multi-beam laser light passes through said beam splitter, said Fresnel focus lens and is reflected by said 45 degree inclined reflective mirror, then is focused by an object lens on a disk surface, and said multi-beam laser light is reflected by said disk, passes through said object lens, said 45 degree inclined reflective mirror and said beam splitter, and is reflected by a 135 degree inclined reflective mirror to a light sensor array and is transferred to a electric signal.

A micro-optical pickup, comprising:

• a silicon substrate;
• a laser diode configured on said silicon substrate to emit a laser light;
• a dynamic grating splitting said laser light into a multi-beam laser light;
• a magnetic actuator or an electromagnetic actuator connecting said silicon substrate and said dynamic grating to lift said dynamic grating on or off a axis of said laser light emitted by said laser diode;
• and
• a beam splitter, a Fresnel focus lens and a 45 degree inclined reflective mirror configured on said silicon substrate and arranged in order on said axis of said laser light emitted by said laser diode, wherein said laser light or multi-beam laser light passes through said beam splitter, said Fresnel focus lens and is reflected by said 45 degree inclined reflective mirror, then is focused by an object lens on a disk surface, and said multi-beam laser light is reflected by said disk, passes through said object lens, said 45 degree inclined reflective mirror, said beam splitter and is reflected by a 135 degree inclined reflective mirror, and is transferred to an electric signal.