Abstract: Provided is a method for carburizing a tantalum container which can easily control the carburization thicknesses of various portions of the tantalum container and carburize the tantalum container with a uniform thickness. A method for carburizing a tantalum container 1 made of tantalum or a tantalum alloy to allow carbon to penetrate the tantalum container 1 includes the steps of: supporting the tantalum container 1 on a support member 5, 6 provided in a chamber 3 and setting the tantalum container 1 in the chamber 3; and reducing the pressure inside the chamber 3 and heating the interior of the chamber 3, wherein a carbon source is placed in the vicinity of a portion of the tantalum container 1 hard to carburize.

Abstract: Provided is a method for carburizing a tantalum member whereby the tantalum member is less deformed by carburization and can be carburized with good flatness of the planar part thereof and in a uniform manner. The method is a method for subjecting a tantalum member 1 made of tantalum or a tantalum alloy and having a planar part 1a to a carburization process for allowing carbon to penetrate the member 1 from the surface toward the inner portion thereof and includes the steps of: setting the tantalum member 1 in a chamber 3 containing a carbon source by supporting the planar part 1a on a plurality of support rods 6 tapered at distal ends 6a thereof; and subjecting the tantalum member 1 to a carburization process by reducing in pressure and heating the interior of the chamber 3 to allow carbon derived from the carbon source to penetrate the tantalum member 1 from the surface thereof.

Abstract: Provided is a method for carburizing a tantalum container which can easily control the carburization thicknesses of various portions of the tantalum container and carburize the tantalum container with a uniform thickness. A method for carburizing a tantalum container 1 made of tantalum or a tantalum alloy to allow carbon to penetrate the tantalum container 1 includes the steps of: supporting the tantalum container 1 on a support member 5, 6 provided in a chamber 3 and setting the tantalum container 1 in the chamber 3; and reducing the pressure inside the chamber 3 and heating the interior of the chamber 3, wherein a carbon source is placed in the vicinity of a portion of the tantalum container 1 hard to carburize.

Abstract: Provided is a method for carburizing a tantalum member whereby the tantalum member is less deformed by carburization and can be carburized with good flatness of the planar part thereof and in a uniform manner. The method is a method for subjecting a tantalum member 1 made of tantalum or a tantalum alloy and having a planar part 1a to a carburization process for allowing carbon to penetrate the member 1 from the surface toward the inner portion thereof and includes the steps of: setting the tantalum member 1 in a chamber 3 containing a carbon source by supporting the planar part 1a on a plurality of support rods 6 tapered at distal ends 6a thereof; and subjecting the tantalum member 1 to a carburization process by reducing in pressure and heating the interior of the chamber 3 to allow carbon derived from the carbon source to penetrate the tantalum member 1 from the surface thereof.

Abstract: A sheet shaped optical element package including a base film, plural sheet shaped optical elements on the base film, and a cover film formed on the plural sheet shaped optical elements, the plural sheet shaped optical elements being arranged on the base film in a row, each of the sheet shaped optical elements having the optical direction, the above surface of the plural sheet shaped optical elements being covered by the cover film in a manner such that the cover film covers the sheet shaped optical elements having a blank part on it.

Abstract: A sheet shaped optical element package including a base film, plural sheet shaped optical elements carried on the base film, and a cover film formed on the plural sheet shaped optical elements, the plural sheet shaped optical elements being arranged on the base film in a row, each of the sheet shaped optical elements having the optical direction, the above surface of the plural sheet shaped optical elements being covered by the cover film in a manner such that the cover film covers the sheet shaped optical elements having a blank part on it.