Larger sizes of up to 24" x 39" are also available. To order a custom-sized film polarizer, please contact Tech Support. We also offer film polarizers with AR-coated windows epoxied on each side in Ø1/2", Ø1", and Ø2" sizes.

Area scan cameras are based on rectangular sensors. Their pixels are all exposed at the same time and convert photons into electric signals. They are evaluated image by image. The latest CMOS sensors (Sony IMX411ALR) with resolutions to 14,192 x 10,656 pixels (151 megapixels) allow inspection of large wafers, solar panels, and displays. Data interfaces like Camera Link (6.8 Gbit/s), GigE Vision (10 Gbit/s), USB 3.1 (10 Gbit/s), and CoaXPress (CPX – bis 4 x 6,25 Gbit/s) and CXP-12 (to 4 x 12.5 Gbit/s) ensure the corresponding broadband transfer of the image data.

Imaging professionals can also obtain more detailed information and white papers, extensive learning material, glossaries, and fascinating user reports from other exhibitors at LASER World of PHOTONICS 2019.

The polarizing materials are designed and optimized for use within their operating range, denoted in the graphs below by the blue highlighted regions. Outside of this range, the performance of these polarizers' is not guaranteed. Care should be taken when cleaning and mounting these polarizers, as significant stress may cause performance variation. We recommend using compressed air to remove dust and debris.

To explore the available types, wavelength ranges, extinction ratios, transmission, and available sizes for each polarizer category, click More [+] in the appropriate row below.

Line scan cameras record an endless image one line at a time. This is done at frequencies of ten thousand pictures per second, which are put together by software. Thanks to line lengths of well in excess of 10,000 pixels, high spatial resolution is guaranteed and only a thin strip has to be illuminated. The full advantage of line scan cameras can be experienced in processes with very high belt speeds. In the visible wavelength range, they work mainly with CCD or active CMOS sensors (active because each pixel has its own amplifier and A/D converter). At the transition from visible to near-infrared wavelengths (VIS-SWIR) and in the infrared range, mainly indium gallium arsenide (InGaAs) sensors are used, but recently also colloidal quantum dot (CQD) sensors appeared on the market. Line scan cameras are also available for 3D applications.

Thorlabs' film polarizers are designed to linearly polarize low-power beams of light. Each film polarizer is a square that can be left whole or cut to custom sizes. The polarization axis is marked with an arrow and is aligned to the flat edge of the LPVISE2X2, while the polarization axis of the LPNIRE2X2 and LPNIRE11S is noted by a sticker. There is a protective film on both sides of each polarizer that must be removed prior to use.

These polarizers may slightly diffuse the transmitted beam and are not recommended for imaging applications or applications that require the input divergence to be preserved. Similarly, they may not maintain the collimation of large input beams. The beam will walk as the polarizer rotates, so it is recommended to use these polarizers only when a single fixed polarization direction is needed. Rotation assemblies, like the one shown to the right, should be used only to set a fixed output angle.

Thorlabs offers a diverse range of polarizers, including wire grid, film, calcite, alpha-BBO, rutile, and beamsplitting polarizers. Collectively, our line of wire grid polarizers offers coverage from the visible range to the beginning of the Far-IR range. Our nanoparticle linear film polarizers provide extinction ratios as high as 100 000:1. Alternatively, our other film polarizers offer an affordable solution for polarizing light from the visible to the Near-IR. Next, our beamsplitting polarizers allow for use of the reflected beam, as well as the more completely polarized transmitted beam. Finally, our alpha-BBO (UV), calcite (visible to Near-IR), rutile (Near-IR to Mid-IR), and yttrium orthovanadate (YVO4) (Near-IR to Mid-IR) polarizers each offer an exceptional extinction ratio of 100 000:1 within their respective wavelength ranges.