美国Andover Corporation
Andover Corporation公司是光学滤光片及镀膜领域世界上绝对的领导者
Andover公司是光学滤光片和镀膜领域的佼佼者，产品包括:带通滤光片、中性衰减片、高低通滤光片、二向色滤光片以及用户订制滤光片等系列产品。

 Andover Corporation is a recognized world leader in the manufacture of high-quality optical filters and coatings. We manufacture a broad array of standard and custom components including image-quality, narrowband, broadband, neutral density Ultraviolet, Visible, Ultra-narrowband, space-qualified filters and many more. New products for 2001 are Spectrophotometric Standards. Andover is NVLAP approved to produce Glass Reference NTRM Standards AC-930 and AC-1930.