VOLUME CHANGE RESIN MOLDING, ITS MANUFACTURING METHOD, FORMING METHOD OF MINUTE PATTERN AND OPTICAL ELEMENT

PROBLEM TO BE SOLVED: To provide a volume change resin molding, containing a water absorption high molecular resin, that is easy to insert to a mold, easy to mold and fabricate, and enables fine processings, and to provide its manufacturing method, a forming method of a minute pattern and an optical element manufactured by using them. SOLUTION: The volume change resin molding is obtained to be analogously contracted by leaving a gel-like matter at room temperature as it is or heating it, after the water absorption high molecular weight resin of a water absorption state is made the gel-like matter through water discharge. The manufacturing method of the volume change resin is provided with a process for inserling the water absorption high molecular weight resin of the water absorption state to a mold, a process for leaving the water absorption high molecular weight resin at room temperature as it is, heating it and a process for forming a gel sheet giving a molding shape, and a process for leaving the gel sheet at room temperature, as it is, making it heated and analogously contracted. The series of the processes are repeated by a plurality of number of times, the volume is analogously contracted, a molding metal mold applying arbitrary shape processing is formed on the inner face or a duplicate of an article applying the arbitrary shape processing is formed on the surface. COPYRIGHT: (C)2003,JPO