PHOSPHOR LENS AND LIGHT EMISSION DEVICE

• Main Author: IKARI MASANORI
• Format: Patent
• Language: English; Japanese
• Published: 20.09.2018
• Subjects: ADHESIVES; ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; LIME, MAGNESIA; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PAINTS; PHYSICS; POLISHES; REFRACTORIES; SEMICONDUCTOR DEVICES; SLAG; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To provide a phosphor lens which is applicable to a white light emission device and which enables the miniaturization of the device by reducing the number of components of the device.SOLUTION: There is provided a phosphor lens which includes, as a main component, a complex oxide having ABOtype garnet structure in which one or more elements selected from a group consisting of at least Y, Lu, Sc and La, and Ce are placed at an A site position, and Al is placed at a B side position; includes, as a sug component, at least one oxide selected from a group consisting of a silicon oxide, a zirconium oxide, a titanium oxide and a hafnium oxide in a range of larger than 0 and less than 100 ppm as a mass ratio with respect to the complex oxide; and is made of a sintered body of a transparent ceramic having a total light transmittance of 50% or more at wavelength of 600 nm in optical length of 10 mm.SELECTED DRAWING: Figure 2 【課題】白色光発光装置に適用可能であると共に、装置の部品点数を低減し、装置の小型化が可能な蛍光体レンズを提供する。【解決手段】Ａサイト位置に少なくともＹ、Ｌｕ、Ｓｃ、Ｌａよりなる群から選択された１つ以上の元素とＣｅとが入り、Ｂサイト位置に少なくともＡｌが入るＡ3Ｂ5Ｏ12型ガーネット構造を有する複合酸化物を主成分として含み、副成分としてシリコン酸化物、ジルコニウム酸化物、チタン酸化物及びハフニウム酸化物よりなる群から選択された少なくとも１つの酸化物を前記複合酸化物に対する質量比として０より大きく１００ｐｐｍ未満の範囲で含む、光路長１０ｍｍでの波長６００ｎｍにおける全光線透過率が５０％以上となる透明セラミックスの焼結体からなる蛍光体レンズである。【選択図】図２