Optical filter and infrared image sensing system including the same

The present disclosure relates to an optical filter and an infrared image sensing system including the optical filter. The optical filter includes a glass substrate, and an IR film layer and an AR film layer plated on two opposite surfaces of the glass substrate; the IR film layer includes a first r...

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Bibliographische Detailangaben
Hauptverfasser:	Xiao, Niangong, Chen, Ce, Chen, Jili, Ding, Weihong
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY 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 PICTORIAL COMMUNICATION, e.g. TELEVISION SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TRANSPORTING
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Beschreibung
Zusammenfassung:	The present disclosure relates to an optical filter and an infrared image sensing system including the optical filter. The optical filter includes a glass substrate, and an IR film layer and an AR film layer plated on two opposite surfaces of the glass substrate; the IR film layer includes a first refractive-index-material layer, a second refractive-index-material layer, and a third refractive-index-material layer; the refractive index of the third refractive-index-material layer is greater than the refractive index of the first refractive-index-material layer, and the refractive index of the second refractive-index-material layer is greater than the refractive index of the third refractive-index-material layer. The optical filter of the present disclosure has a good anti-reflection effect on near-infrared light so that a high accuracy of face recognition and gesture recognition is ensured.