American Polarizers Inc.
American Polarizers - Circular & linear polarizer manufacturer including linear & circular polarizers, contrast enhancement display filters, polarmotion animated displays & motion signs, aircraft cabin windows, sunglasses & 3-D glasses.
http://www.apioptics.com/

Intelmac
Manufacturer of in-line optical fiber polarizers, depolarizers and power monitors.
http://www.intelmac.com

Reflex Analytical Corporation
Fabricates lenses, windows, polarizers, prisms and rods.
http://www.reflexusa.com/

Microtech Instruments, Inc.
Offers polarizers and lenses for far-infrared, terahertz and sub-millimeter waves.
http://www.mtinstruments.com

International Polarizer, Inc.
International Polarizer
http://www.intl-polarizer.com

Bolder Vision Optik
Polarization control components. Products include waveplates, polarizers and liquid crystal components.
http://www.boldervision.com

Codixx AG
CODIXX - Manufacturer of NIR IR UV VIS polarizers polarisers - polarizing filter for infrared, ultraviolet and visible spectra range - dichroic structured polarising filters - patterned polarizer dichroic polarizer with high transmittance and contrast
http://www.codixx.de/index.en.html

Moxtek
X-ray products: detectors, tubes, Beryllium/Polymer xray windows, JFET; Optics: PBS, ultraviolet/infrared polarizers...
http://www.moxtek.com

Red Optronics
Guaranteed low prices on BBO, LBO, and KTP crysals by Red Optronics.
http://www.redoptronics.com

ISP Optics
ISP Optics is a manufacturer of infrared optical components including windows,lenses,domes,prisms,polarizers,waveplates fiber optics made from Barium Fluoride BaF2,Calcium Fluoride CaF2,Cadmium Telluride CdTe, Crystal Quartz,Caesium Iodide CsI,Fused Silica,Gallium Arsenide GaAs,Germanium Ge,Potassium Bromide KBr,Potassium Chloride KCl,KRS-5,Lithium Fluoride LiF,Magnesium Fluoride MgF2,Sodium Chloride NaCl,Sapphire,Zinc Selenide ZnSe,Zinc Sulfide Cleartran ZnS, optical glass.
http://www.ispoptics.com