Patent ID: 6635330
Filing Date: 2003-10-21
Classification: C23C,H01J,H01K,Y10T

Abstract:
A spheroid coated with a thin film of an incident particle beam coming from a particle source located in a specific direction when viewed from the spheroid, wherein the thin film is formed on the spheroid by performing a spin motion together with a swing motion and has a thickness distribution substantially uniform in the rotational direction of the spin motion and also in the rotational oscillation direction of the swing motion, in which the spin motion is a rotation of the spheroid at a constant angular velocity about the spheroidal axis and the swing motion is a rotational oscillation of the same spheroid for rotationally oscillating the axis at a constant cycle in one surface, and the center of the rotational oscillation is in the vicinity of the midpoint between two focal points on the axis of the spheroid.