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This section provides an overview for circular polarizers as well as their applications and principles. Also, please take a look at the list of 5 circular polarizer manufacturers and their company rankings. Here are the top-ranked circular polarizer companies as of December, 2024: 1.Dontech, Inc., 2.American Polarizers Incorporation, 3.Bright Shadow Technology Co.,Ltd.
Table of Contents
A circular polarizer is a device used to eliminate polarization in specific directions of light.
Primarily used as an accessory for optical equipment and cameras, it reduces reflections from surfaces such as glass and minimizes glare, enhancing the transparency of landscape photos and translucent objects. It can also reduce reflections from water surfaces and glass windows while emphasizing the colors and contrasts of subjects.
Circular polarizers have a circular shape, with gear-like structures or ribs arranged around the filter. A special material is coated on the surface of the filter, allowing only specific light to pass through. By rotating the filter, the direction of polarization can be adjusted.
*Including some distributors, etc.
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Thorlabs, Inc, established in Newton, NJ in 1989, is a manufacturer of photonics equipment for research, manufacturing, and biomedical applications. Their product portfolio includes optical components, for use in imaging, sensing, and spectroscopy applications, spectrometers and analyzers used for research and industrial applications, fiber optic components and photomultiplier tubes, and imaging devices that capture and measure light signals for diverse applications in scientific research. The company has sales offices in the United States, United Kingdom, Sweden, China, and Brazil.
Dontech, Inc. is a manufacturer of optical filters and components that was founded in 1971 in Doylestown, Pennsylvania, USA. The company produces optical filters and components used in various commercial and consumer electronics for display purposes. These include optical illuminators, rigid or flexible laminators, and complete optical assemblies such as touchscreen displays. Operating within AS9100D and ISO 9001:2015 certification standards, the company also offers additional design and testing services to customers with unique projects.
American Polarizers Incorporation (API) was established in 1960 and is a manufacturer of polarized and non-polarized optical products in Reading, Pennsylvania. It offers linear and circular polarizers, filters, display enhancement films, as well as relevant services, including custom cutting and optical laminations. The products are used in the aircraft, electronics, photographic, animated display, and general scientific industries. The company owns Eclipse, Glare Bar, Sun Bar, and Polarmotion brands. That quality management system is backed by ISO 9001 certification.
Knight Optical is a company that manufactures optical components based in the UK. The company offers services such as design, consultancy, custom packaging, testing, quality assurance, and others. They serve a wide number of industries including scientific, defense, medical, pharmaceutical, laser engineering and manufacturing. They also provide a wide range of coating capabilities for optical components throughout the ultraviolet (UV), visible and infrared (IR) spectra.They are ISO9001:2015 and ISO14001:2015 accredited and are providing quality products and services.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Dontech, Inc. |
30.0%
|
| 2 | American Polarizers Incorporation |
30.0%
|
| 3 | Bright Shadow Technology Co.,Ltd |
20.0%
|
| 4 | Knight Optical |
20.0%
|
Derivation Method
The ranking is calculated based on the click share within the circular polarizer page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
3 | 100.0% |
2 products found
2 products
Profitet Co., Ltd.
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Profitet Co., Ltd.
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