Abstract: An uneven surface film and a light-diffusing sheet are provided, which can prevent generation of scratches on surfaces thereof even when a plurality of the films or sheets are piled up or the film or sheet is superimposed on another member. The uneven surface film of the present invention has an uneven profile on a surface of the film, wherein the uneven profile shows a maximum peak height (Rp) of 6.0 ?m or higher and a number of peaks (RHSC) of 600 peaks/0.5 mm2 or less in a roughness curve determined by three-dimensional surface profilometry. This uneven surface film can be suitably used as a component member of a backlight, a light-diffusing sheet, or the like, and exhibits anti-scratch function as well as favorable light-diffusing property.

Abstract: The present invention provides an optical glass for precision molding, having excellent properties, i.e. yield temperature (At) of at most 550° C., refractive index (nd) of at least 1.83 and Abbe number (&ngr;d) of at most 26.0 and further providing a low softening property as well as an improved mass production property with less coloration, which is represented, in term of atoms for making up the glass, by the following chemical composition (wt %) P2O5 14.0 to 31.0% B2O3   0 to 5.0% GeO2   0 to 14.0% Sum of P2O5 + B2O3 + GeO2 14.0 to 35.0% Li2O   0 to 6.0% Na2O  2.5 to 14.0% Sum of Li2O + Na2O  2.5 to 15.0% Nb2O5 22.0 to 50.0% WO3   0 to 30.0% Bi2O3  5.0 to 36.0% BaO   0 to 22.0%.