Patent attributes
An exemplary optical lens assembly includes a first lens and a second lens. The first lens comprises a first central portion and a first annular stepped portion. The first annular stepped portion has a first outer step and a second outer step. The first outer step has a first outer side surface and a first downward-facing surface. The second outer step has a second outer side surface. The second lens comprises a second central portion and a second annular stepped portion. The second annular stepped portion has a first inner step and a second inner step. The first inner step has a first inner side surface and a first upward-facing surface. The second inner step has a second inner side surface. The first annular stepped portion is engaged in the second annular stepped portion. A gap exists between the second outer side surface and the first inner side surface.
