| abstract |
Provided is a polygonal mirror having excellent surface roughness, plan view, dimensional accuracy, and a lightweight mirror made of a first resin composition containing a synthetic resin, a curing agent, and a filler. Simplified, low-cost mass production also includes the step of forming a first molding with a first resin composition comprising a synthetic resin, a filler and a curing agent, and depositing a thin metal film on the outermost surface of the first or second molding. A method for producing this possible polygon mirror is provided. |