Acetate, given another dimension.

FACTORY900 can change your expectations of what an acetate frame looks like. The Japanese brand comes from Aoyama Optical, a manufacturer with a long history in Fukui. Even its name points back to the workshop: 900 was the factory identification number. Making is embedded in the identity.

The company’s manufacturing account explains that its dramatic forms are shaped from acetate sheet through bending and cutting, rather than the injection molding their complexity might suggest. Specially developed machinery and the skill of the people using it work together. That combination allows a flat drawing to become something with unusual depth and sculptural presence.

In a 2026 Eyestylist interview, Yoshinori Aoyama described growing up beside the family factory and building on the acetate expertise of earlier generations. His account helps make sense of the frames: experimentation grows out of an intimate understanding of a material. When looking at FACTORY900, give the side view as much attention as the front. A curve or a change in thickness may be doing more than you first notice.