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

Gauss's Law: Spherical Symmetry01:26

Gauss's Law: Spherical Symmetry

A charge distribution has spherical symmetry if the density of charge depends only on the distance from a point in space and not on the direction. In other words, if the system is rotated, it doesn't look different. For instance, if a sphere of radius R is uniformly charged with charge density ρ0, then the distribution has spherical symmetry. On the other hand, if a sphere of radius R is charged so that the top half of the sphere has a uniform charge density ρ1 and the bottom half has a uniform...
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...
Design of Prismatic Beams for Bending01:23

Design of Prismatic Beams for Bending

The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and stress...
Design Example: Calculating Safe Diameter for Wind-Exposed Disc01:17

Design Example: Calculating Safe Diameter for Wind-Exposed Disc

Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...
Spherical Coordinates01:23

Spherical Coordinates

Spherical coordinate systems are preferred over Cartesian, polar, or cylindrical coordinates for systems with spherical symmetry. For example, to describe the surface of a sphere, Cartesian coordinates require all three coordinates. On the other hand, the spherical coordinate system requires only one parameter: the sphere's radius. As a result, the complicated mathematical calculations become simple. Spherical coordinates are used in science and engineering applications like electric and...
Geometry of Hyperbolas01:30

Geometry of Hyperbolas

A hyperbola consists of all points where the absolute difference of distances to two fixed points, called foci, remains constant. The standard equation isEach branch extends infinitely and approaches two asymptotes, which guide the curve’s behavior. The parameters a and b define key features: a measures the distance from the center to each vertex along the transverse axis, while b influences the slopes of the asymptotes. The asymptotes have equationsA rectangle centered at the origin with...

You might also read

Related Articles

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

Sort by
Same author

A risk index tool to minimize the risk of nitrogen loss from land to water.

Journal of environmental quality·2024
Same author

Risk factors for postoperative nausea and vomiting after video-assisted thoracic surgery esophagectomy: a prospective cohort study.

Die Pharmazie·2024
Same author

Middle meningeal artery embolization for chronic subdural hematoma with cerebrospinal fluid hypovolemia: A report of 2 cases.

Neuro-Chirurgie·2021
Same author

Usefulness of an alternative option for evacuation of acute subdural hematoma: The toothbrush curettage method.

Neuro-Chirurgie·2020
Same author

Preoperative MRI for predicting pathological changes associated with surgical difficulty during laparoscopic cholecystectomy for acute cholecystitis.

BJS open·2020
Same author

Do labral tears influence poor outcomes after periacetabular osteotomy for acetabular dysplasia?

The bone & joint journal·2016

Related Experiment Video

Updated: Jun 12, 2026

Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging
07:14

Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging

Published on: April 11, 2025

New design for geodesic lenses.

T Shimano, A Arimoto, K Muraoka

    Applied Optics
    |June 26, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel method designs geodesic lenses using a uniform function and curvature limits to prevent light leakage. This approach enhances numerical aperture by up to 24% compared to previous designs.

    More Related Videos

    Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics
    09:00

    Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

    Published on: October 27, 2017

    Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
    11:49

    Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application

    Published on: March 8, 2019

    Related Experiment Videos

    Last Updated: Jun 12, 2026

    Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging
    07:14

    Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging

    Published on: April 11, 2025

    Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics
    09:00

    Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics

    Published on: October 27, 2017

    Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
    11:49

    Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application

    Published on: March 8, 2019

    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Geodesic lenses are crucial optical components.
    • Existing design methods face limitations in controlling light leakage and optimizing performance.
    • Minimizing light leakage is essential for efficient waveguide coupling.

    Purpose of the Study:

    • To introduce a new, optimized method for designing geodesic lenses.
    • To incorporate curvature constraints for enhanced light confinement.
    • To improve the numerical aperture of geodesic lenses.

    Main Methods:

    • Expressing lens shape using a uniform function.
    • Implementing an upper limit on lens curvature to prevent waveguide light leakage.
    • Allowing user-defined curvature limits at the design stage.

    Main Results:

    • The new design method effectively prevents light leaking from the waveguide.
    • A comparison with former methods demonstrates significant improvements.
    • The numerical aperture of the designed geodesic lenses is improved by up to 24%.

    Conclusions:

    • The proposed uniform function method offers superior control over geodesic lens design.
    • This method enhances optical performance by increasing numerical aperture.
    • The design successfully addresses light leakage issues in waveguide applications.