Patent ID: 9304391
Filing Date: 2016-04-05
CPC Classification: G02B,G03F

Claim Text:
1. An exposure apparatus using a microlens array, comprising: a substrate stage for supporting a transparent substrate to be subjected to exposure; a microlens array arranged above the substrate stage and having a plurality of microlenses formed therein; a light-blocking mask arranged above the microlens array and fixed to said microlens array, said light-blocking mask facing said transparent substrate; an exposure light source; an optical device for guiding outgoing exposure light from the exposure light source to said light-blocking mask and using said microlens array to image exposure light transmitted through said light-blocking mask onto the transparent substrate mounted on said substrate stage; an alignment mark support arranged in a surface of said mask that faces said transparent substrate; an alignment mark formed in a surface of the alignment mark support that faces said transparent substrate; and a light radiating unit that radiates light transmitted through said transparent substrate onto said alignment mark for detecting a substrate mark provided to said transparent substrate and said alignment mark within a same field of vision, the light radiating unit being arranged below said transparent substrate, wherein a space between said alignment mark support and said transparent substrate is smaller than a space between said microlenses and said transparent substrate.