Patent ID: 7710844

Claim:
An optical storage system for storing data in an optical medium, comprising: an initial light source, providing an initial light beam; a first sheet, comprising a first surface and a second surface, arranged such that the initial light beam is partially reflected on the first surface to act as a reference beam, and the initial light beam partially passes the first surface and is reflected on the second surface to act as a signal beam; a light modulator, providing a pattern, wherein the signal beam contacts the light modulator; and a second sheet, comprising a third surface and a fourth surface, wherein the reference beam is reflected toward the optical medium on the third surface, the signal beam is reflected toward the optical medium on the fourth surface, and the reference beam and the signal beam interfere with each other to store the pattern into the optical medium, wherein the first sheet is parallel to the second sheet, and the reference beam and the signal beam travel in parallel between the first and second sheets.