| 摘要 |
PURPOSE:To provide a stamper for a Fresnel lens by which die separation or transport becomes convenient and excess ionizing radiation-curing resin can be easily handled, and provide a Fresnel lens manufacturing method to mold the Fresnel lens by using this stamper. CONSTITUTION:In a stamper for a Fresnel lens used when the Fresnel lens is molded by radiating ionizing radiation from one surface side of an ionizing radiation transmissive base material sheet after ionizing radiation curing resin is injected between one surface of the base material sheet having ionizing radiation transmissivity and the stamper for the Fresnel lens, the stamper for the Fresnel lens has a space part 12 in a peripheral end part of the stamper 10 and a groove part 13 to discharge excess resin to this space part, and a Fresnel lens manufacturing method is characterized in that the Fresnel lens is molded by using this stamper 10. |
