Disclosed arc: a film mirror which can have a satisfactorily reduced regular reflectance even when used as a film mirror for solar power generation purposes under severe environments for a long period, is lightweight and flexible, can be produced at a reduced cost, has an enlarged surface area, can be produced on a large scale, has excellent light resistance and weather resistance, and has a good regular reflectance to solar light; a process for producing the film mirror; and a reflection device for solar power generation purposes, which is equipped with the film mirror. The film mirror is characterized by comprising a resin base, a silver reflective layer, and a layer containing an ultraviolet ray absorber, wherein at least one component contained in the ultraviolet ray absorber fulfills the requirement represented by formula (1): Aa ≥ 1.2×Ab (wherein Aa represents the absorbance at a peak having an absorption maximum at a wavelength of 260 to 320 nm; and Ab represents the absorbance at a peak having an absorption maximum at a wavelength of 321 to 400 nm).
所公开的弧形:一种薄膜镜,即使在恶劣环境下长期用作太阳能发电用薄膜镜,也能令人满意地降低规则反射率,重量轻且柔性好,可降低生产成本,表面积增大,可大规模生产,具有优异的耐光性和耐候性,对太阳光具有良好的规则反射率;一种生产该薄膜镜的工艺;以及一种太阳能发电用反射装置,该装置配备有该薄膜镜。薄膜反射镜的特点是由
树脂基体、
银反射层和含有
紫外线吸收剂的层组成,其中
紫外线吸收剂中所含的至少一种成分满足式(1)所表示的要求:Aa≥1.2×Ab(其中,Aa 表示在波长为 260 至 320 纳米时具有吸收最大值的峰值处的吸光度;Ab 表示在波长为 321 至 400 纳米时具有吸收最大值的峰值处的吸光度)。