Patent ID: 7782442

Claim:
An exposure apparatus which exposes a substrate, comprising: an optical unit which radiates a first exposure light beam from a first area disposed on a first predetermined surface onto a first exposure area and which radiates a second exposure light beam from a second area disposed on a second predetermined surface onto a second exposure area; and a detecting system having a light-receiving unit which receives a detecting light beam via the first predetermined surface and the second predetermined surface and which obtains information about a positional relationship between a first pattern arranged in the first area and a second pattern arranged in the second area based on a light-receiving result of the light-receiving unit, wherein the detecting light beam has an optical path that includes the first predetermined surface, the second predetermined surface and the light-receiving unit in this order; the light-receiving unit receives, as the detecting light beam, at least one of a light beam from a third area which is disposed on the first predetermined surface and which is different from the first area and a light beam from a fourth area which is disposed on the second predetermined surface and which is different from the second area; the optical unit has a first optical system into which the first exposure light beam from the first area comes and a second optical system which is different from the first optical system and into which the second exposure light beam from the second area comes; the first optical system is capable of supplying the light beam from the third area to the second optical system; the second optical system is capable of supplying the light beam from the fourth area to the first optical system; and the light-receiving unit receives, as the detecting light beam, at least one of the light beam from the third area and the light beam from the fourth area via the first optical system and the second optical system.