Black Coating Film Process for Producing Same Black Light-Shielding Plate and Diaphragm Plate Diaphragm for Light Quantity Control Shutter and Heat-Resistant Light-Shielding Tape Each Comprising The Black Light-Shielding Plate

摘要

The present invention relates to a heat-resistant black coating film capable of making the surface of an optical member low-reflectivity and black, a black shading plate using the same as a base material using the same, an aperture stop using the same, Heat-shading tape. A black coating film (A) comprising a titanium oxide film containing titanium and oxygen as main components and having an oxygen content of 0.7 to 1.4 in terms of O / Ti atomic ratio in a substrate, wherein the titanium oxide film has a longitudinal direction A black coating film (A) having a structure in which fine pillar-shaped crystals grown in a thickness direction of the film are gathered, a projection on the surface of the film, and a thickness of 50 nm or more; And a metallic light-shielding film (B) having a thickness of 40 nm or more formed on at least one surface of the substrate, wherein a black coating film (A) according to any one of the first to eighth inventions is laminated on the surface of the metallic light- Provided with a black shade plate.