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美國Andover Corporation
Andover Corporation公司是光學濾光片及鍍膜領域世界上絕對的領導者
Andover公司是光學濾光片和鍍膜領域的佼佼者，產品包括:帶通濾光片、中性衰減片、高低通濾光片、二向色濾光片以及用戶訂制濾光片等系列產品。

 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.