OPTICAL FILTER DEVICE, AND MANUFACTURING METHOD OF THE SAME

• Main Authors: REICHEL STEFFEN, RALF BIERTUEMPFEL
• Format: Patent
• Language: English; Japanese
• Published: 28.01.2016
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MINERAL OR SLAG WOOL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide an optical filter that does not have a dent when it is exposed to a polishing stress or a point-like load, and does not have a local damage.SOLUTION: An optical filter element includes a plate-like element of phosphate glass or fluorophosphate glass. In order to spectrally filter the light passing through the plate-like element, the plate-like element is doped with a light absorption ion of at least one of a copper element, cobalt element, manganese element, iron element, rare earth element, and nickel element. Preferably, the plate-like element includes two parallel-planar surfaces facing each other. A thin glass sheet is disposed on at least one of the two surfaces. 【課題】研磨応力または点状負荷にさらされる場合のへこみ、局所的に損傷のない光学フィルタの提供。【解決手段】光学フィルタ素子は、リン酸塩ガラスまたはフルオロリン酸塩ガラスの板状素子を備え、板状素子は、板状素子を通過する光をスペクトル的にフィルタリングするために、銅元素、コバルト元素、マンガン元素、鉄元素、希土類元素、ニッケル元素のうちの少なくとも１つの元素の光吸収イオンでドーピングされ、板状素子は、好適には平行平面形の相互に対向する２つの面を有し、前記２つの面のうちの少なくとも１つに、薄いガラスのシートが配置される。【選択図】なし