Lens device and assembly

A lens comprising:

• an optical unit;
• and
• a rib portion extending outwardly of the optical unit in a radial direction,
• wherein the optical unit and the rib portion comprise a cyclic olefin compound,
• wherein the rib portion includes a light transmission region and a light blocking region, and
• wherein the light blocking region is disposed inside of the rib portion and includes a non-polar colorant for reducing light transmissivity.

A lens device comprising:

• a lens assembly, including:
• a lens barrel including an internal space;
• and
• one or more lenses stacked in the internal space of the lens barrel along an optical axis,
• wherein each of the one or more lenses include a respective optical unit and a respective rib portion extending outwardly of the respective optical unit in respective radial directions of the stacked one or more lenses,
• wherein one or more of the respective rib portions includes a respective light transmission region and a respective light blocking region, and
• wherein the respective light blocking regions are disposed inside of the one or more respective rib portions and each comprise respective non-polar colorants.