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

Total internal reflection for precision small-angle measurement.

A Zhang, P S Huang

    Applied Optics
    |March 22, 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

    Embodied Immunity: Place, Inequality, and Reproductive Outcomes in Two US Communities.

    American journal of human biology : the official journal of the Human Biology Council·2026
    Same author

    Operational strategies among infectious disease clinical trial sites during pandemics: a scoping review.

    Trials·2026
    Same author

    The value of fluorine-18 fluorodeoxyglucose positron emission tomography/magnetic resonance imaging (<sup>18</sup>F-FDG PET/MRI) in characterising pleural effusion and detecting pleural metastasis for staging lung cancer.

    Clinical radiology·2026
    Same author

    Autotrophic isopropanol production by Cupriavidus necator using industrial biogas and incinerator flue gases as carbon sources.

    Journal of biotechnology·2026
    Same author

    Preoperative clinical scores compared with dual-energy computed tomography parameters in predicting complete resection of ovarian advanced high-grade serous carcinoma.

    Clinical radiology·2025
    Same author

    Does the 1:1:1 Transfusion Ratio Mortality Benefit Hold True in Ultra-massive Transfusion? A Study From the Product (Patient Related Outcomes During Ultra-massive transfusion multi-Center Trial) Consortium.

    The American surgeon·2025
    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

    A novel method uses total internal reflection in prisms for precise small-angle measurement. This technique achieves high sensitivity and linearity, with a prototype demonstrating low nonlinearity and noise levels.

    Area of Science:

    • Optics and Photonics
    • Metrology

    Background:

    • Precise angle measurement is crucial in various scientific and industrial applications.
    • Existing methods may face limitations in sensitivity, linearity, or susceptibility to environmental factors.

    Purpose of the Study:

    • To propose and validate a new method for high-precision small-angle measurement.
    • To enhance measurement sensitivity and linearity using optical principles.

    Main Methods:

    • Utilizes the total-internal-reflection effect at a pair of glass prisms.
    • Measures angular displacement via intensity changes of reflected light, exploiting polarization-dependent phase shifts.
    • Employs a differential method with two beams and photodiodes for improved linearity and reduced laser power influence.

    Related Experiment Videos

    Main Results:

    • A prototype device achieved a nonlinearity error of 1.3% over a 0.6-degree range and 0.4% over a 0.3-degree range.
    • Demonstrated a peak-to-peak noise level of approximately 0.5 arc seconds.
    • Indicated potential for further noise reduction and resolution enhancement by narrowing the measurement range.

    Conclusions:

    • The proposed method offers a sensitive and linear approach to precision small-angle measurement.
    • The differential total internal reflection technique shows promise for applications requiring accurate angular sensing.
    • Further optimization can lead to even higher resolution and reduced noise in angular measurements.