Large polytetrafluoroethylene integrating sphere fabrication method

A method for fabricating an integrating sphere including twelve pentagonal spherical shells and twenty hexagonal spherical shells, wherein:

• the hexagonal spherical shell includes a first circular spherical shell having a first diameter and six first auxiliary spherical shells formed by cutting the first circular spherical shell, and
• the pentagonal spherical shell includes a first circular spherical shell having the first diameter and five second auxiliary spherical shells formed by cutting a second circular spherical shell having a second diameter,
• the method comprising:
• preparing a first molding frame for forming a first circular spherical shell and a second molding frame for forming a second circular spherical shell;
• providing a predetermined PTFE powder to the first molding frame to compressively mold the first circular spherical shell;
• providing a predetermined PTFE powder to the second molding frame to compressively mold the second circular spherical shell;
• cutting the compressively molded first circular spherical shell to provide a first auxiliary spherical shell;
• cutting the compressively molded second circular spherical shell to provide a second auxiliary spherical shell;
• coating a bonding layer on a hemisphere for an integrating sphere and fitting together the first circular spherical shell, the first auxiliary spherical shell, and the second auxiliary spherical shell to form a PTFE hemispherical shell;
• and
• combining a recompression hemisphere with the hemisphere for an integrating sphere with the PTFE hemispherical shell interposed therebetween to recompress the PTFE hemispherical shell.