January 18, 2024

To Whom It May Concern
Company nameName of RepresentativeContactTEL

Toyo Gosei Co., Ltd.
Yujin Kimura
President and Representative Director(Code No：4970 TSE Standard Market)
Natsuo Watase
Director General Manager of Corporate Planning Department+81－3－5822－6170

Presentation on AR UV Nanoimprint Resinat SPIE（The International Society for Optical Engineering）
Toyo Gosei Co., Ltd. (President and Representative Director: Yujin Kimura) will be presenting on
the research and development of resin for AR UV nanoimprint at SPIE AR | VR | MR, to be held in
San Francisco, California, USA, from January 29th (Monday) to 31st (Wednesday), 2024. This marks
the first time that our company will be presenting at SPIE AR | VR | MR.
１． About SPIE AR | VR | MR
SPIE (The International Society for Optical Engineering) is the international society for optics andphotonics. It organizes conferences in various fields, including optoelectronics, remote sensing,information communication, and mechanical optics, where researchers, engineers, investors,entrepreneurs, customers, and suppliers from around the world participate.
Our company will participate in the AR (Augmented Reality) | VR (Virtual Reality) | MR (Mixed Reality)
conference, contributing to an oral session on the research and development of UV nanoimprint resins.
２． Details of the Presentation
Nanoimprint technology is a fine patterning technology allowing the transfer of nano-scale patterns
from the mold to resin on the substrate. Among the technologies, UV nanoimprint has the advantage offabrication patterns at angles that were challenging with traditional lithographic pattern techniques.
Furthermore, the processing flow consists of four simple stages: coating, pressing, curing, and releasingof the mold, making it cost-effective and easy to introduce for mass production. Nanoimprint technology
is expected to witness market expansion against the backdrop of the metaverse, and the potential for
application development using nanoimprint technology is broadening beyond the AR glasses market. In
this context, using a working stamp replicated from an expensive master mold has become the standardpractice. In this conference, we plan to present results achieved using our working stamp resin"PAK-TRAD series," replicating the shape of the master mold and subsequently using the working stamp
repeatedly in the product molding process. This approach demonstrates excellent reproducibility andhigh processing accuracy in fabrication of high refractive index resin products.
Title：Durability evaluation of repeated imprint using working stamp: influence of productivity for
diffractive optical elements
Presenter *／Author：Taigo Akasaki*, Risa Tanaka, Takeshi Osaki, Toyo Gosei Co., Ltd.
Date：29 January 2024 • 9:40 AM - 10:00 AM PST
Venue：Moscone Center, Room 3006 (Level 3 West)

Session：9 Fabrication and process for XR technology
Website：https://spie.org/conferences-and-exhibitions/ar-vr-mr【Features of our UV nanoimprint resins for working stamps】
・High durability for repeat imprinting・High releasing property
・Solvent-free, no pre-bake process for solvent removal
・UV cure only, no post-bake process to ensure curing

End