| 摘要 |
A thin film for optics comprising titanium oxide, cerium oxide and bismuth oxide, wherein the contents of titanium oxide, cerium oxide and bismuth oxide fall within the quadrangle ABCD in the ternary diagram expressed in terms of mole percentage of TiO2, CeO2 and Bi2O3, with A, B, C and D being points (4, 1, 95), (98, 1, 1), (20, 79, 1) and (3, 14, 83) respectively as represented by TiO2 mole %, CeO2 mole %, and Bi2O3 mole %, and an ultraviolet-absorbing and heat-reflecting glass having on a transparent glass substrate at least three-layer film made by forming a layer having a relatively high refractive index and one having a relatively low refractive index alternately, wherein at least two of the at least three layers are high refractive index films, at least one of the high refractive index films being the above thin film for optics. The above thin film has a high refractive index leading to highly selective heat-reflection performance, and ultraviolet-absorbing properties.
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