Patent ID: 7754324

Claim:
A reflection plate in lighting devices comprising an aliphatic polyester based resin reflection film, said film comprising: an aliphatic polyester resin; a fine powder filler; and a carbodiimide compound, wherein the carbodiimide compound has a basic structure represented by a general formula: —(N≡C═N—R—) n — wherein n is an integer of 1 or more, and R represents an organic linking unit, wherein the film has pores therein at a porosity of 50% or less, wherein the film has an average reflectance of 90% or more at a wavelength in the range of 420 nm to 700 nm, wherein a content of the fine powder filler is 10 mass parts or more and 60 mass parts or less per 100 mass parts of the aliphatic polyester based resin composition comprising the fine powder filler and the aliphatic polyester based resin, and wherein the fine powder filler has a refractive index of 1.6 or more.