METHOD FOR MANUFACTURING ROD LENSES, AND ROD LENSES

摘要

An integral homogeneous rod lens and the manufacturing thereof from a raw glass body are provided by melting the raw glass body in a mold, whereby a protruding part of the raw glass body deforms into a dome shape with a spherical or nearly spherical surface that defines a convex lens portion of the rod lens.

主权项

1. A method for manufacturing a rod lens that is homogeneously integrally formed with a shaft portion and a convex lens portion, comprising the steps of:
providing at least one raw glass body from which the rod lens is to be formed; providing a mold for receiving and supporting the raw glass body such that the portion of the raw glass body intended to define the convex lens portion protrudes from the mold; melting the raw glass body at such a temperature that the portion of the raw glass body protruding from the mold deforms in air or in gas into a dome shape having a spherical surface; allowing the rod lens so produced to cool; and removing the rod lens from the mold.