Transparent substrate provided with a stack of thin films acting on solar and/or infrared radiation

A laminate having an external light reflection of blue or blue-green with a dominant wavelength in the range of from about 470 to 500 nm, said external light reflection remaining substantially constant in said range irrespective of viewing angle, which comprises a first transparent substrate and a plurality of thin films deposited thereon, said plurality of thin films comprising successively from the substrate:

• i) a first dielectric material film;
• ii) a first film having infrared reflection properties;
• iii) a second dielectric material film;
• iv) a second film having infrared reflection properties;
• v) a third dielectric material film;
• vi) a third film having infrared reflection properties;
• and
• vii) a fourth dielectric material film, wherein the thickness of said third film having infrared reflection properties (vi) is greater than the thickness of said second film having infrared reflection properties (iv), and wherein the thickness of said second film having infrared reflection properties (iv) is greater than the thickness of said first film having infrared reflection properties (ii).