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

3.5K
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...
3.5K
Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

7.6K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
7.6K
Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

16.8K
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,...
16.8K

You might also read

Related Articles

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

Sort by
Same author

Comparison of RNA Extraction Method for Human Whole Blood: Assessing the Quality, Quantity, and Impact of RBC Lysis Across TRIzol, Invitrogen, and Qiagen Systems.

Drug testing and analysis·2026
Same author

Cellular origins and etiological factors for squamous cell carcinoma and related cancer types of the bladder.

The Journal of pathology·2026
Same author

NLK facilitates Caspase-8 activation to drive macrophage PANoptosis in sepsis.

Clinical and translational medicine·2026
Same author

Decreased PTGES2 Farnesylation in Granulosa Cells Compromises PGE2-Dependent Cumulus Expansion and Oocyte Maturation During Ovarian Aging.

Aging cell·2026
Same author

The Cx43-Mediated Autophagy Mechanism Influences Triple-Negative Breast Cancer Through the Regulation of Rab31.

Cancers·2025
Same author

Identification of epileptic hippocampal sclerosis related genes through bulk and single-nucleus RNA sequencing datasets.

Cellular and molecular life sciences : CMLS·2025

Related Experiment Video

Updated: Oct 12, 2025

Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
08:41

Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution

Published on: August 16, 2012

11.7K

Improved optical camera communication systems using a freeform lens.

Ziwei Liu, Lin Yang, Yanbing Yang

    Optics Express
    |November 23, 2021
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces FreeOCC, a novel optical camera communication system using a freeform lens for uniform illumination. FreeOCC significantly boosts data rates and reduces errors in reflected optical camera communication.

    More Related Videos

    Lensless Fluorescent Microscopy on a Chip
    11:23

    Lensless Fluorescent Microscopy on a Chip

    Published on: August 17, 2011

    17.8K
    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
    10:28

    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

    Published on: July 5, 2016

    10.4K

    Related Experiment Videos

    Last Updated: Oct 12, 2025

    Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
    08:41

    Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution

    Published on: August 16, 2012

    11.7K
    Lensless Fluorescent Microscopy on a Chip
    11:23

    Lensless Fluorescent Microscopy on a Chip

    Published on: August 17, 2011

    17.8K
    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
    10:28

    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

    Published on: July 5, 2016

    10.4K

    Area of Science:

    • Optical camera communication (OCC)
    • Freeform optics
    • Wireless data transmission

    Background:

    • Optical camera communication (OCC) systems use image sensors for data transmission.
    • Reflected OCC systems offer higher data rates than direct OCC but suffer from low signal-to-noise ratio due to non-uniform illumination.
    • Achieving accurate demodulation in reflected OCC systems is challenging.

    Purpose of the Study:

    • To present a novel reflected optical camera communication system, FreeOCC, that overcomes the limitations of current systems.
    • To improve signal-to-noise ratio and enable accurate demodulation through uniform illumination.
    • To demonstrate the enhanced performance of the FreeOCC system.

    Main Methods:

    • Developed a FreeOCC system utilizing a custom-designed freeform lens to control light propagation.
    • The freeform lens generates a uniform rectangular illumination on the observation plane.
    • Implemented a simple thresholding scheme for accurate signal demodulation.

    Main Results:

    • The FreeOCC system achieved a uniform grayscale distribution in captured frames.
    • Packet reception rate increased by 35% (4-order PAM) and 32% (8-order PAM) at 5 kHz.
    • Bit error rate decreased by 72% (4-order PAM) and 59% (8-order PAM) at 5 kHz.
    • The FreeOCC system demonstrated superior performance compared to common reflected OCC systems.

    Conclusions:

    • The FreeOCC system effectively addresses the non-uniform irradiance issue in reflected OCC.
    • The use of a freeform lens enables high-accuracy demodulation and improved communication performance.
    • FreeOCC represents a significant advancement in reflected optical camera communication technology.