US 2009/0213476 A1 · COMPOSITE LENS

Abstract

A composite lens of the present invention has a base lens and a resin lens placed on the base lens. The resin lens has, in an area outside an optically effective diameter, a first surface, a second surface that is adjacent to the first surface, and a third surface that is adjacent to the second surface in sequence from an optical axis to an outer circumference. The first surface has an inclined surface that becomes higher from the outer circumference toward the optical axis, and the inclined surface is connected to the second surface. The second surface has a plane that is substantially perpendicular to the optical axis, and the substantially perpendicular plane is connected to the first plane. The third surface has an inclined surface that becomes lower from an inner circumference toward the outer circumference.

Claims4

Dependent claims

A composite lens, comprising:

a base lens;
and
a resin lens, provided on the base lens, and having, in an area outside an optically effective diameter, a first surface and a second surface that is adjacent to the first surface and a third surface that is adjacent to the second surface in a sequence from an optical axis of the base lens toward an outer circumference of the resin lens;
wherein the first surface has an inclined surface that becomes higher from the outer circumference toward the optical axis and that is connected to the second surface;
the second surface has a plane that is substantially perpendicular to the optical axis and that is connected to the inclined surface;
and
the third surface has an inclined surface that becomes lower from the inner circumference toward the outer circumference.

4 more elements

Dependencies are inferred from the claim text.

Composite lens

Life of this patent

Composite lens

Life of this patent

Abstract

Claims4