linear polarization


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Related to linear polarization: Circular polarization, Elliptical polarization

linear polarization

See polarization.

linear polarization

[′lin·ē·ər ‚pō·lə·rə′zā·shən]
(optics)
Polarization of an electromagnetic wave in which the electric vector at a fixed point in space remains pointing in a fixed direction, although varying in magnitude. Also known as plane polarization.

polarized 3D

A stereoscopic 3D display technology that separates the stereo frames by polarization. Using polarizer overlays, the movie projector or TV screen emits the left frame in a different polarization than the right frame, and the viewer wears polarized glasses to filter the frames to the appropriate eyes.

Polarized 3D is also called "passive 3D," because the glasses have no built-in electronics and do not perform any processing (contrast with active 3D). See 3D visualization, anaglyph 3D, lenticular 3D, parallax 3D and 3D glasses.

Linear and Circular Polarization
Dating back to the 1950s, the linear polarized method was the first 3D technology used for major motion pictures such as the 1953 horror film "House of Wax." The theater projector emitted stereo frames polarized 90 degrees apart. Later on, the technology changed to a clockwise/counterclockwise orientation like the RealD method widely used today. Polarized 3D glasses with two different lens polarizations filter the images to each eye respectively.

The circular polarized method migrated to TVs that alternate the lines of resolution: one line polarized to the left eye, the next line to the right. However, because the lines are interlaced, the viewer sees half the resolution (only 540 lines reach each eye on a 1080p TV). With 2160p 3D TVs, the full 1080p resolution can be delivered (see 4K TV).


Polarized 3D for the Cinema
The 3D movie projectors send polarized images to the screen, which reflect back to the viewer's polarized glasses. The circular method is used in today's 3D movies. (Images courtesy of Actif Polarizers Ltd.)







Polarized 3D for Computers and TVs
Linear polarization is adequate for video games, because gamers look straight at the screen. However, people move around more watching TV, and the circular polarization works best.


Polarized 3D for Computers and TVs
Linear polarization is adequate for video games, because gamers look straight at the screen. However, people move around more watching TV, and the circular polarization works best.







Polarized RealD Glasses
The RealD glasses (top) are handed out in the movie theater, while the steampunk goggles also have RealD lenses for the retro lover (see RealD glasses and steampunk). (Images courtesy of RealD and WillRockwell, www.etsy.com/shop/WillRockwell)


Polarized RealD Glasses
The RealD glasses (top) are handed out in the movie theater, while the steampunk goggles also have RealD lenses for the retro lover (see RealD glasses and steampunk). (Images courtesy of RealD and WillRockwell, www.etsy.com/shop/WillRockwell)
References in periodicals archive ?
However, the power of two received antennas is decided by antenna angle when linear polarization antenna is adopted.
The asymmetric transmission phenomenon in linear polarization converter was firstly observed by Fedotov et al.
Because the maximum contribution to the wave slope is obtained using only linear polarization, here, we set the ellipticity to zero and so the linearly polarized backscattering cross section at any polarization orientation angle can be derived as [14, 15]:
Table 4 presents the calculated linear polarization resistances (LPRs) of each sample.
The specimen with and without Nano Coating was exposed to Linear Polarization Resistance Test (LPR).
An assistant research scientist from the university's department of astronomy, Eleonora Troja, was lead author of the Nature paper titled "Significant and variable linear polarization during the prompt optical flash of GRB 160625B."
Each system is equipped with two orthogonal receiving channels, which are able to measure vertical and horizontal linear polarization at the operating frequency in the 5433-5468 MHz range.
In order to producing CP radiation, created some of the methods such as : implementing two inverted-L grounded strips around two opposite corners of the slot [1,8], improvising T-shaped grounded metallic strip, which is orthogonal to the axis of the CPW feed-line [9], using an asymmetrical CPW fed from a corner of the slot with an embedding pair of grounded strips implanted in the slot [12], striped slot antenna with longer fraught [10], utilizing the additional arc-shaped grounded metallic strip for circular and linear polarization [11], and embedding a firelight shaped feed line and inverted-L grounded strips [3,8] are used in literature.
The report "Corrosion Monitoring Market by Type Technique (Corrosion Coupons, Electrical resistance, Linear Polarization Resistance, Galvanic, & Ultrasonic Thickness Measurement), End-Use Industry (Oil & Gas, Chemical, Manufacturing) - Global Forecast to 2021", The corrosion monitoring market is expected to reach USD 297.8 Million by 2021, at a CAGR of 9.1% between 2016 and 2021.
Linear polarization technique involved grinding the two surface ends of each specimen with silicon carbide abrasive papers of 80, 120, 220, 800 and 1000 grits before being polished with 6.0 um to 1.0 um diamond paste, washed with distilled water, rinsed with acetone, dried and stored in a dessicator before the test.
The antenna in the Fig.2 was designed with linear polarization. The antenna was designed to coaxial feed so that the rectifier circuit could be added at the back of the antenna.

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