Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Color Vision01:24

Color Vision

530
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.
530

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Dual-harmonic generation in a hybrid graphene-lithium niobate nonlinear metasurface.

Optics express·2026
Same author

Teaching with human remains: curatorship, technological innovation and ethical engagement at the Morgagni Museum of Human Anatomy.

Pathologica·2026
Same author

A case of chorea, epilepsy and cerebral atrophy in the work of Ettore Ravenna (1920s).

Pathologica·2026
Same author

Bones Like Glass: A historical forensic-pathological reassessment of a fatal infant case of osteogenesis imperfecta (Vrolik disease) from the Morgagni Museum of Padua (Italy).

Journal of forensic and legal medicine·2026
Same author

Scherlievo disease: A forgotten endemic treponematosis of the 18th-19th century Balkans.

Journal of the European Academy of Dermatology and Venereology : JEADV·2026
Same author

Engineered fano resonances in a compact Si<sub>3</sub>N<sub>4</sub> photonic crystal nanobeam-microring platform for multi-cladding environments.

Scientific reports·2026

Related Experiment Video

Updated: Jun 7, 2025

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

5.7K

Multi-colour reflective metagrating with neutral transparency for augmented reality.

Giovanni Magno, Béatrice Dagens, Antonella D'Orazio

    Optics Express
    |November 14, 2024
    PubMed
    Summary

    This study introduces a novel metagrating metalens capable of reflecting vibrant colors. This technology shows promise for augmented reality applications to aid individuals with cognitive impairments.

    More Related Videos

    Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display
    09:04

    Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display

    Published on: January 14, 2020

    9.6K
    How to Build a Dichoptic Presentation System That Includes an Eye Tracker
    05:48

    How to Build a Dichoptic Presentation System That Includes an Eye Tracker

    Published on: September 6, 2017

    8.5K

    Related Experiment Videos

    Last Updated: Jun 7, 2025

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
    08:48

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

    Published on: September 25, 2020

    5.7K
    Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display
    09:04

    Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display

    Published on: January 14, 2020

    9.6K
    How to Build a Dichoptic Presentation System That Includes an Eye Tracker
    05:48

    How to Build a Dichoptic Presentation System That Includes an Eye Tracker

    Published on: September 6, 2017

    8.5K

    Area of Science:

    • Optics and Photonics
    • Materials Science
    • Nanotechnology

    Background:

    • Metasurfaces and metalenses offer advanced optical functionalities.
    • All-dielectric and transparent structures are desirable for optical applications.
    • Guided mode resonances are key to controlling light-matter interactions.

    Purpose of the Study:

    • To design and experimentally validate an all-dielectric, transparent metagrating-based metalens.
    • To achieve spectrally narrow reflection peaks for vibrant color generation.
    • To develop a rapid engineering method for spectral peak control.

    Main Methods:

    • Simultaneous excitation of multiple guided mode resonances.
    • Precise engineering of metagrating structures.
    • Analytical numerical method for spectral position control.
    • Experimental validation using a bichromatic sample.

    Main Results:

    • Demonstration of a metagrating metalens generating multiple spectrally narrow reflection peaks.
    • Successful reflection of a comb of vibrant and saturated colors.
    • Validation of an analytical numerical method for designing spectral characteristics.
    • Experimental confirmation of the bichromatic sample's performance.

    Conclusions:

    • The developed metagrating metalens enables precise control over reflected colors.
    • The analytical numerical method facilitates efficient design of spectral properties.
    • This technology holds potential for augmented reality systems, particularly for cognitive assistance.