Patent ID: 7046408

Claim:
A method of hologram exposure, comprising: preparing a substrate where a first alignment mark and a second alignment mark are formed; providing a mask for hologram exposure, the mask including: a third alignment mark that is readable with an alignment optical system; and a hologram pattern that is recorded so as to form a desirable device pattern and a fourth alignment mark on the substrate by hologram exposure; performing a test hologram exposure with the mask for hologram exposure aligned to the substrate by aligning the first alignment mark formed on the substrate and the third alignment mark formed on the mask for hologram exposure; obtaining an amount of a gap between the second alignment mark formed on the substrate and the fourth alignment mark formed on the substrate by the test hologram exposure; calculating an amount of correction based on the gap; and performing a hologram exposure with the mask for hologram exposure aligned to the substrate based on at least the amount of correction.