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 Experiment Videos

Speckle reduction in laser projection systems by diffractive optical elements.

L Wang, T Tschudi, T Halldórsson

    Applied Optics
    |February 15, 2008
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

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

    Sort by
    Same author

    Prodomain mutations at the subtilisin interface: correlation of binding energy and the rate of catalyzed folding.

    Biochemistry·1995
    Same author

    Synthesis and characterization of a highly potent and effective antagonist of retinoic acid receptors.

    Journal of medicinal chemistry·1995
    Same author

    Thermodynamic parameters for the helix-coil transition of oligopeptides: molecular dynamics simulation with the peptide growth method.

    Proceedings of the National Academy of Sciences of the United States of America·1995
    Same author

    The sixty nucleotide OccR operator contains a subsite essential and sufficient for OccR binding and a second subsite required for ligand-responsive DNA bending.

    Journal of molecular biology·1995
    Same author

    Cloning of a cDNA encoding a 190-kDa insulin receptor substrate-1-like protein of simian COS cells.

    Biochemical and biophysical research communications·1995
    Same author

    Differences in oxidative response of subpopulations of neutrophils from healthy subjects and patients with rheumatoid arthritis.

    Annals of the rheumatic diseases·1995
    Same journal

    Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

    Applied optics·2026
    Same journal

    High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

    Applied optics·2026
    Same journal

    Automated stitching interferometry for high-precision metrology of X-ray mirrors.

    Applied optics·2026
    Same journal

    Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

    Applied optics·2026
    Same journal

    High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

    Applied optics·2026
    Same journal

    Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

    Applied optics·2026
    See all related articles

    This study introduces a novel diffractive optical element to eliminate laser speckle noise in the far field of projection systems. The method effectively reduces speckle intensity while maintaining excellent beam quality.

    Area of Science:

    • Optics and Photonics
    • Laser Technology
    • Image Processing

    Background:

    • Laser projection systems often suffer from significant speckle noise in the far field, degrading image quality.
    • Existing speckle reduction techniques are primarily effective in the near field and struggle to modify laser coherence properties for far-field applications.

    Purpose of the Study:

    • To propose and evaluate a new method for eliminating far-field speckle noise in laser projection systems.
    • To demonstrate the effectiveness of a diffractive optical element in reducing speckle intensity without compromising beam quality.

    Main Methods:

    • Development and implementation of a novel diffractive optical element (DOE).
    • Integration of the DOE into a laser projection system to manipulate the laser beam's spatial properties.

    Related Experiment Videos

  • Analysis of the far-field intensity modulation depth and beam quality after speckle reduction.

    • Main Results:

    • The proposed diffractive optical element significantly reduces the intensity modulation depth of the far-field speckle pattern to a few percent.
    • Good beam quality is preserved, ensuring the effectiveness of the projection system.
    • The method provides a viable solution for speckle elimination in the far field where traditional methods are insufficient.

    Conclusions:

    • A diffractive optical element offers an effective solution for mitigating severe speckle noise in the far field of laser projection systems.
    • This technique successfully reduces speckle intensity while maintaining essential beam characteristics, paving the way for improved laser projection technologies.