Polarizable compact

A method of manufacturing a polarizable compact used for glasses, comprising

• forming an injection-molded portion from a transparent molding material at an injection temperature of the transparent molding material in the range of 230° C. to 270° C. and at a temperature of a mold used for forming the injection-molded portion in the range of 60° C. to 100° C.;
• thermally bonding the injection-molded portion to a concave surface side of a polarizing sheet having a predetermined curvature radius, the polarizing sheet having a polarizer layer held between a first protective layer and a second protective layer respectively serving as a convex surface side and a concave surface side,
• wherein the first protective layer and the second protective layer are formed from transparent films by a casting method with retardation (Re)≤10 nm, the transparent films of the first protective layer and the second protective layer being formed from an acylcellulose-based plastic film material and a polyamide-based plastic film material, respectively,
• the polarizing sheet is bent to a predetermined curvature by a bending process, which occurs prior to the thermally bonding,
• the second protective layer is directly fused to the injection-molded portion, and
• the polarizing sheet after the bending process has Re≤10 nm.