Patent ID: 6930761

Claim:
A projecting exposure apparatus, comprising: i) spatial light modulation means for performing spatial light modulation of light, which has been produced by a light source, and thereby forming a two-dimensional pattern of the light, and ii) an image-side telecentric image forming optical system for forming an image of the two-dimensional pattern of the light, which has been obtained from the spatial light modulation performed by the spatial light modulation means, on a photosensitive material, the two-dimensional pattern of the light being projected onto the photosensitive material, the photosensitive material being thus exposed to the two-dimensional pattern of the light, wherein the projecting exposure apparatus further comprises axial air separation adjusting means, which is located between the image forming optical system and the photosensitive material, and which alters an axial air separation between the image forming optical system and the photosensitive material and thereby adjusts a focusing point at the time of the formation of the image of the two-dimensional pattern of the light.