Active alignment machine

An active alignment machine, comprising:

• a base;
• a first pillar installed on the base, wherein the first pillar has a first pillar top surface;
• a second pillar installed on the base, wherein the second pillar has a second pillar top surface, and the first pillar top surface and the second pillar top surface cooperatively support plural assembling specifications;
• a distribution module installed on the base, and arranged between the first pillar and the second pillar;
• a first alignment module, wherein the first alignment module performs an active alignment after being assembled;
• a second alignment module, wherein the second alignment module performs the active alignment after being assembled;
• and
• a third alignment module, wherein the third alignment module performs the active alignment after being assembled;
• wherein the first alignment module, the second alignment module and third alignment module are replaceable to be assembled with or dissembled from the first pillar top surface and the second pillar top surface, wherein the first alignment module, the second alignment module and third alignment module work with the distribution module to perform the active alignment on a first-type product, a second-type product and a third-type product, respectively.