US 8,077,392 B2 · Composite optical element

Abstract

The present invention relates to composite optical elements, and particularly to a composite optical element in which second and third optical components are coupled to a first optical component. The present invention is advantageous in enhancing optical properties. A composite optical element (1) includes first, second and third optical components (10, 20, 30). The first optical component (10) has a lens surface (13). The second optical component (20) is coupled to the first optical component (10) at the lens surface (13) and has a lens surface (22) at a side opposite to a first coupling surface (21) at which the second optical component (20) is coupled to the first optical component (10). The third optical component (30) is coupled to the second optical component (20) at the lens surface (22) and has a lens surface (32) at a side opposite to a second coupling surface (31) at which the third optical component (30) is coupled to the second optical component (20). The lens surface (13) partially has a first uneven region (13a). The lens surface (22) partially has a third uneven region (22a). The lens surface (32) partially has a third uneven region (32a).

Claims6

Dependent claims

A composite optical element, comprising:

a first optical component having a first optical functional surface;
a second optical component coupled to the first optical component at the first optical functional surface and having a second optical functional surface at a side opposite to a first coupling surface of the second optical component at which the second optical component is coupled to the first optical component;
and
a third optical component coupled to the second optical component at the second optical functional surface and having a third optical functional surface at a side opposite to a second coupling surface of the third optical component at which the third optical component is coupled to the second optical component,
wherein the first, second and third optical functional surfaces partially have first, second and third uneven regions, respectively,
the first optical component is made of first glass,
the second and third optical components are made of first and second resins, respectively, and
the first resin has a softening temperature lower than a glass transition temperature of the first glass and higher than a softening temperature of the second resin.

5 more elements

Dependencies are inferred from the claim text.

Composite optical element

Life of this patent

Composite optical element

Life of this patent

Abstract

Claims6