KINKO OPTICAL CO., LTD. is optical product manufacturer in Taiwan that has about 30 years of experience. Although they are a major company with a full production facility and CAPA, they are also able to make small lots.
Please feel free to ask for a quotation, which can be prepared in about a week, regardless of the quantity.
They design and produce 2Φ to 160Φ polished lenses, 2Φ to 40Φ glass aspheric surface lenses, and other plastic lenses, as well as lens units for combining these. Glass material can be either from Japan or local (Taiwan).

KINKO OPTICAL CO.,LTD./今国光学