# American Polarizers, Inc\.: Specialist in Polarized Products \& Materials for Over 40 Years

> American Polarizers Inc\. is a global leader in polarization and custom optical filters, including linear and circular polarizers\.

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## Pages
- [About API](https://www.apioptics.com/about-api/): A leading global manufacturer of innovative optical technology, API supplies polarizing materials and solutions for a wide range of applications\.
- [Contact Us](https://www.apioptics.com/about-api/contact-us/)

## Posts
- [Linear vs\. Circular Polarizers: What's the Difference?](https://www.apioptics.com/linear-vs-circular-polarizers-whats-the-difference/)

## Products
- [LINEAR Polarized 3D Glasses \- Captain Black Style](https://www.apioptics.com/product/3dlux-linear-polarizer-black-captain-frames/): 3D linear polarizer Captain Black glasses with the linear axis at 45º/135º
- [LINEAR Polarized 3D Glasses \- Terminator Black Style](https://www.apioptics.com/product/3dlux-linear-polarized-black-terminator/): Linear polarizer 3D glasses in black Terminator style
- [LINEAR Polarized 3D Clip\-On \- 104 Style](https://www.apioptics.com/product/3dlux-polarizer-black-104-clip-on/): 3D linear polarizer clip\-on in our 104 style
- [CIRCULAR Polarized 3D Glasses \- Captain Black Style](https://www.apioptics.com/product/3dlux-circular-polarized-captain-black-frames/): Circular Polarized 3D Captain Black Glasses
- [CIRCULAR Polarized 3D Glasses \- Terminator Black Style](https://www.apioptics.com/product/3dlux-circular-polarizer-terminator-black/): Circular Polarizer 3D Glasses In Terminator Black Style

## Product Tables
- [Wave Plates](https://www.apioptics.com/product-table/general-demo-3-2-3-2-3-2/)
- [3M](https://www.apioptics.com/product-table/general-demo-3-2-3-2-3-3/)
- [3M – Copy as before 10/20/25](https://www.apioptics.com/product-table/general-demo-3-2-3-2-3-3-2/)
- [All Stock Categories](https://www.apioptics.com/product-table/general-demo-3-2-3-2-3-2-2/)
- [Stock Linear Polarizers](https://www.apioptics.com/product-table/general-demo-3-2-3-2-4/)

## Categories
- [API News](https://www.apioptics.com/category/api-news/)
- [Product Innovation](https://www.apioptics.com/category/product-innovation/)
- [Polarizing Films](https://www.apioptics.com/category/polarizing-films/)
- [Resources](https://www.apioptics.com/category/resources/)

## Categories
- [Woo Sections](https://www.apioptics.com/layout_category/woo-sections/)
- [Footers](https://www.apioptics.com/layout_category/footers/)
- [Headers](https://www.apioptics.com/layout_category/headers/)

## Product categories
- [Polarizers \& Optical Filters](https://www.apioptics.com/product-category/products/)
- [Linear Polarizers](https://www.apioptics.com/product-category/products/linear-polarizers/)
- [Circular Polarizers](https://www.apioptics.com/product-category/products/circular-polarizers/)
- [Waveplates \& Retarders](https://www.apioptics.com/product-category/products/wave-retarders/)
- [3M Display Enhancement Films](https://www.apioptics.com/product-category/products/optical-display-filters/3m-surface-display-enhancement-films/)

## Product tags
- [Best Seller](https://www.apioptics.com/product-tag/best-seller/)

## Optional
- [Sitemap index](https://www.apioptics.com/sitemap_index.xml)