OPTICAL MEMBER WITH POROUS GLASS LAYER, IMAGE PICKUP APPARATUS, AND METHOD FOR MANUFACTURING OPTICAL MEMBER

To provide an optical member in which crystallization is suppressed and which has a porous glass layer on a base material. An optical member has a base material (1) and a porous glass layer (2) which is formed on the base material (1) and has a three-dimensional through pore, in which the existence...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG, ZUYI, KOTANI, YOSHINORI, MASUBUCHI, TOMOAKI, SUGIYAMA, AKIRA, KAKEGAWA, NORISHIGE, TAKASHIMA, KENJI, KOKETSU, NAOYUKI, TAKEI, AKIKO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES METALLURGY MINERAL OR SLAG WOOL NANOTECHNOLOGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING
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Beschreibung
Zusammenfassung:	To provide an optical member in which crystallization is suppressed and which has a porous glass layer on a base material. An optical member has a base material (1) and a porous glass layer (2) which is formed on the base material (1) and has a three-dimensional through pore, in which the existence ratio of crystals of 0.2 micrometer or more in the porous glass layer (2) is 1.0% or lower. The optical member is manufactured by heating a glass powder layer at a temperature elevation rate of 50 degree/min or higher to form a base glass layer which is then phase separated and etched. Cette invention a pour objectif de pourvoir à un élément optique dans lequel la cristallisation est supprimée et qui comprend une couche de verre poreux sur un matériau de base. L'élément optique selon l'invention comprend un matériau de base (1) et une couche de verre poreux (2) qui est formée sur le matériau de base (1) et comporte un pore traversant tridimensionnel, le taux de présence de cristaux de 0,2 micromètre ou plus dans la couche de verre poreux (2) étant de 1,0 % ou moins. L'élément optique est fabriqué par chauffage d'une couche de verre pulvérulent à une vitesse d'élévation de la température de 50°/mn ou plus pour former une couche de base en verre qui est ensuite soumise à séparation de phase et gravure.