A broadband emission material according to the present invention includes: a fluoride glass containing 20 to 45 mol % of AlF.sub.3, 25 to 63 mol % of alkaline-earth fluorides in total and 3 to 25 mol % of at least one fluoride of element selected from the group consisting of Y, La, Gd and Lu; and ytterbium ions incorporated in the fluoride glass as divalent rare-earth ions so as to serve as a luminescent center, wherein the fluoride glass includes 1 to 15 mol % of at least one halide of element selected from the group consisting of Al, Ba, Sr, Ca and Mg and element selected from the group consisting of Cl, Br and I; and wherein the alkaline-earth fluorides includes 0 to 15 mol % of MgF.sub.2, 7 to 25 mol % of CaF.sub.2, 0 to 22 mol % of SrF.sub.2 and 0 to 5 mol % of BaF.sub.2.

To provide a fluorophosphates glass having a weather-resistant property and having an O.sup.2/P.sup.5+ ratio even after production, which is set so that Cu.sup.2+ can be added with a quantity of such a degree suppressing an absorption of a visible light while absorbing a near-infrared light, and a method for producing the same, and a near-infrared light absorbing filter, wherein a molar ratio of a content of O.sup.2 with respect to a content of P.sup.5+ (O.sup.2/P.sup.5+) in the fluorophosphates glass, is 3.2 or more and less than 3.4, and a molar ratio of a content of F.sup. with respect to a total content of O.sup.2 and F.sup. (F.sup./(O.sup.2+F.sup.)) in the fluorophosphates glass is 0.05 or more and 0.25 or less.

The present invention relates to a fluorophosphate glass contains P, Cu, Mo, and F. A content ratio (Mo.sup.6+/Cu.sup.2+) of Mo.sup.6+ to Cu.sup.2+ is 0.01 to 0.39 on a mass basis. A content of Mo.sup.6+ may be 0.01 mass % to 4 mass %. A content of Cu.sup.2+ may be 1 mass % to 20 mass %.