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

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...

You might also read

Related Articles

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

Sort by
Same author

End-to-end learned optics for IR under-display lensless face recognition via digital-twin simulation.

Applied optics·2026
Same author

Under-display face-recognition system with neural network-based feature extraction from lensless encrypted images.

Applied optics·2025
Same author

Semantic representation learning for a mask-modulated lensless camera by contrastive cross-modal transferring.

Applied optics·2024
Same author

Lensless facial recognition with encrypted optics and a neural network computation.

Applied optics·2022
Same author

Deep neural network for coded mask cryptographical imaging.

Applied optics·2021
Same author

Motion Estimation by Hybrid Optical Flow Technology for UAV Landing in an Unvisited Area.

Sensors (Basel, Switzerland)·2019
Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026
Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026
Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026
Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026
Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026
Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026
See all related articles

Related Experiment Video

Updated: May 31, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Cluster LEDs mixing optimization by lens design techniques.

Ming-Chin Chien1, Chung-Hao Tien

  • 1Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 30010, Taiwan.

Optics Express
|July 13, 2011
PubMed
Summary
This summary is machine-generated.

This study optimizes white-light LED spectral power distribution for high color rendering and efficiency. The validated algorithm achieves excellent performance across a wide color temperature range.

More Related Videos

Development of an Innovative LED-based Illumination Device for In Vitro Application of Photodynamic Therapy with Rose Bengal
07:24

Development of an Innovative LED-based Illumination Device for In Vitro Application of Photodynamic Therapy with Rose Bengal

Published on: September 12, 2025

Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts
08:43

Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts

Published on: August 26, 2021

Related Experiment Videos

Last Updated: May 31, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Development of an Innovative LED-based Illumination Device for In Vitro Application of Photodynamic Therapy with Rose Bengal
07:24

Development of an Innovative LED-based Illumination Device for In Vitro Application of Photodynamic Therapy with Rose Bengal

Published on: September 12, 2025

Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts
08:43

Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts

Published on: August 26, 2021

Area of Science:

  • Optoelectronics and Solid-State Lighting
  • Color Science and Engineering

Background:

  • Optimizing white-light Light Emitting Diode (LED) clusters requires precise control over spectral power distribution (SPD).
  • Achieving high color rendering and luminous efficiency simultaneously in LED systems presents a significant challenge.

Purpose of the Study:

  • To develop and validate a methodology for step-by-step optimization of LED cluster SPD.
  • To maximize color rendering and luminous efficiency within a defined range of correlated color temperatures (CCTs).

Main Methods:

  • A novel algorithm, analogous to lens design principles, was developed for SPD optimization.
  • A test platform comprising four single-color LEDs and a phosphor-converted cool-white (CW) LED was utilized for validation.
  • The algorithm was applied to determine optimal operating parameters for the LED cluster.

Main Results:

  • The proposed algorithm successfully optimized the spectral power distribution of the white-light LED cluster.
  • Optimal operation range identified as 2600-8500 K CCT, achieving a Color Quality Scale (CQS) greater than 80.
  • High luminous efficiency was demonstrated, reaching 97% of the cluster's theoretical maximum.

Conclusions:

  • The developed methodology provides an effective approach for designing high-performance white-light LED clusters.
  • The findings suggest a practical method for achieving superior color quality and energy efficiency in tunable white lighting applications.