A UV reflective film having an 85% or higher UV reflectance at wavelength 254 nm is provided by controlling, to within prescribed ranges, the amounts of rare earth elements, Cu, and remaining Al that configure the UV reflective film, as well as the ratio of rare earth elements and Cu. This UV reflective film contains one of the following: 0.2-6.0 at% of Cu and 0.2-3.0 at% of one or more types of rare earth elements, the remainder being Al and unavoidable impurities the film also satisfies expression (1), below, and has an 85% or higher UV reflectance at wavelength 254nm. X + 0.5Y < 3.5... (1) [X is the amount [at%] of rare earth elements, and Y is the amount [at%] of Cu.]本發明提供一種紫外線反射膜,其中藉由將構成紫外線反射膜的稀土元素、Cu及剩餘部分的Al的量、以及稀土元素與Cu之比率控制於既定的範圍內,波長254 nm的紫外線的反射率為85%以上。一種紫外線反射膜,含有0.2 at%以上且3.0 at%以下的一種或兩種以上的稀土元素、及0.2 at%以上且6.0 at%以下的Cu的任一者,剩餘部分包含Al及不可避免的雜質,滿足下述(1)式,波長254 nm的紫外線的反射率為85%以上。 X+0.5Y<3.5···(1) [X為稀土元素的量[at%],Y為Cu的量[at%]]無
