From Edmund Optics Inc.
The axis of a linear polarizer determines the plane of polarization that the polarizer passes. There are two ways of finding the axis of a polarizer. A simple method is to start with a known polarizer with a marked axis. Place both the known and unknown polarizer together and transmit light through them. Rotate the unknown polarizer until no light passes through the pair of polarizers. In this orientation, the unknown polarizer's axis is 90° from the axis of the known polarizer.
If a known polarizer with a marked axis cannot be found, the axis can be found by taking advantage of the Brewster effect. When light reflects at glancing incidence off of a non-metallic surface, the S-polarization is reflected more than the P-polarization. A quick way to do this is to look at the glare off of a tiled floor or another non-metallic surface. Rotate the polarizer until the glare is minimized. In this position, the polarizer is oriented so that the axis is vertical. As an example, sunglasses use polarizers that have the polarization axis vertically oriented.
Products & Services
Fresnel Lenses
Fresnel lenses resemble a planoconvex or planoconcave lens that is cut into narrow rings and flattened. If the steps are narrow, the surface of each step is generally made conical and not spherical.
Spherical Lenses
Spherical lenses, also known as singlets, are transparent optical components consisting of one or more pieces of optical glass with surfaces so curved that they serve to converge or diverge the transmitted rays from an object, thus forming a real or virtual image of that object. This area includes micro spherical lenses as well.
Optical Lenses
Optical lenses are transparent components made from optical-quality materials and curved to converge or diverge transmitted rays from an object. These rays then form a real or virtual image of the object. This area includes micro lenses.
Circular Variable Filters
Circular Variable Filters Circular variable filters provide linear attenuation of incident light by rotating the filter.
Diffraction Gratings
A diffraction grating uses a substrate with parallel grooves to disperse light into its spectra. Eschelles are included in this area.
Product Announcements
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Linear polarizers are used in a wide variety of applications. A linear polarizer is an excellent solution in applications requiring glare reduction due to reflected light. Camera filters, sunglasses,...
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ProFlux® polarizers are designed using Moxtek® Nanowire® Technology to control light and image polarization even in high energy and high temperature applications. Made from highly durable materials,...
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Ultraviolet linear polarizer applications include: photometric instruments, microscopy and systems integrating fluorescence.
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A linear polarizer is an excellent solution in applications that require glare reduction due to reflected light. Applications include: camera filters, sunglasses, and machine vision systems.
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API manufactures linear and circular polarizers for a wide range of 3D projection systems. Our polarizer filters are superior in clarity and resolution. And our 3D linear polarizer and circular...
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From the world leader in high-end passive 3D eyewear and projection filters, comes 3DLux, a new circular polarized lens offering the highest quality, clarity and performance available today.
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Glan Taylor prism polarizer is made of two same birefringent material prisms that are assembled with an air space. Its length to aperture ratio which is less than 1.0 makes it a relatively thin...
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Topics of Interest
Video and machine vision systems rely on electronic imagers that typically exhibit anywhere from eight-bit to twelve-bit signal-to-noise ratio. Although sufficient for many applications, cameras in...
This application note details a simple and cost effective solution for the continuous attenuation of laser output power. The attenuator kit described is based on a half waveplate and polarizer. It is...
We studied the optical performance of reflective wire grid
polarizer designed for visible light. The polarizer reflects Epolarization
and transmits H-polarization with low losses. When
used in a...
2.2.3. Polarizing Cube Beam Splitter
The beam splitter can also take the form of a glass cube. It can be a non-polarizing
beam splitter or a polarizing beam splitter. The second option has...
Wire-grid polarizers are now available for broadband visible
applications. This type of polarizer is very attractive for
projection display applications because of its high efficiency, high
contrast,...
