Patent ID: 11899372
Assignee: NIKON CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G  H | IPC G

Claim 0:
1. An exposure device configured to expose a substrate, the exposure device comprising:
a first light source;
a plurality of spatial light modulators each of which is configured to spatially modulate an incident beam based on pattern data; and
an optical path switching machine configured to switch an optical path of light from the first light source so as to sequentially guide the light to the plurality of spatial light modulators,
wherein the optical path switching machine comprises:
a first switching machine configured to switch the optical path to one of a first optical path and a second optical path; and
a second switching machine (i) that is configured to guide the light guided to the first optical path by the first switching machine to spatial light modulators of a first group among the plurality of spatial light modulators and (ii) that is configured to guide the light guided to the second optical path by the first switching machine to spatial light modulators of a second group among the plurality of spatial light modulators.