A heat-resistant, light-shielding film having high light shielding capacity, high heat resistance, high sliding characteristics, low surface gloss and high electroconductivity, and useful for optical device parts, e.g., shutter or aperture blades for digital cameras and digital video cameras, and aperture blades for adjusting light intensity for projectors; method for producing the film; and aperture and light intensity adjusting device using the film.The heat-resistant, light-shielding film comprising a heat-resistant resin film base (A) resistant to 200° C. or higher, coated, on one or both sides, with an Ni-base metallic film (B) having a thickness of 50 nm or more by sputtering and then with a low-reflectivity film (C) of Ni-base oxide also by sputtering, and having a surface roughness (arithmetic average height Ra) of 0.1 to 0.7 μm.