Patent ID: 8400616

Claim:
A laser interference lithography apparatus, comprising: a body; a laser beam supplying unit, fixed onto the body, for providing a laser beam; a reflecting mechanism movably and rotatably mounted on the body; an L-shaped fixing mechanism, mounted on the body and comprising: a first mounting seat, to which an upright first reflecting mirror is fixed; and a second mounting seat, which is connected to the first mounting seat, to be fixed to a horizontal mask, and substantially perpendicular to the first mounting seat; and a substrate stage, movably mounted on the body and disposed below the second mounting seat, for supporting a substrate, wherein a first portion of the laser beam is reflected, by the reflecting mechanism and the first reflecting mirror, to the mask, and a second portion of the laser beam is reflected, by the reflecting mechanism, to the mask so that the first portion and the second portion of the laser beam generate an interference pattern on a pattern layer of the substrate.