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Related Concept Videos

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Group Polarization

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Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
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Color Vision01:24

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Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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Related Experiment Video

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Enabling High Grayscale Resolution Displays and Accurate Response Time Measurements on Conventional Computers
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Real-color displays realized by randomized polarization.

Shizuki Sasaki, Mariko Udono, Yasuhiro Koike

    Applied Optics
    |May 13, 2021
    PubMed
    Summary

    This study introduces a random depolarization film (RDF) to create real-color displays. This innovative film randomizes light polarization, effectively preventing blackout and color issues when viewed through polarized lenses.

    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Display Technology

    Background:

    • Current displays emit linearly polarized light, causing significant issues like blackout and color degradation when viewed with polarizing elements (e.g., sunglasses).
    • Existing solutions involve complex polarization-control technologies that are often ineffective and fail to fully resolve these display problems.

    Purpose of the Study:

    • To develop a novel method for achieving real-color displays that overcome the limitations of linearly polarized light emission.
    • To introduce a new material and approach for polarization randomization in display technology.

    Main Methods:

    • Development and application of a novel polymer film, termed random depolarization film (RDF).
    • The RDF is engineered by doping a polymer with specific birefringent crystal particles to randomize light polarization.

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  • Integration of the RDF onto existing display panels.

    • Main Results:

    • The RDF effectively randomizes light polarization, mimicking natural, unpolarized light.
    • Displays equipped with RDF reproduce colors with high fidelity, closely matching natural colors as perceived by the human eye.
    • Elimination of blackout and color degradation issues when viewing displays through polarizers.

    Conclusions:

    • The random depolarization film (RDF) offers a simple yet effective solution to polarization-related display problems.
    • This technology has the potential to revolutionize color reproduction in displays by eliminating the need for complex polarization controls.
    • The RDF approach provides a pathway towards more natural and accurate color reproduction in electronic displays.