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Related Concept Videos

Total Internal Reflection Fluorescence Microscopy01:05

Total Internal Reflection Fluorescence Microscopy

Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
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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.
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Updated: Jul 6, 2026

Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
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Thin Observation Module by Bound Optics (TOMBO): Concept and Experimental Verification.

J Tanida, T Kumagai, K Yamada

    Applied Optics
    |March 22, 2008
    PubMed
    Summary

    A novel compact imaging system, the Thin Observation Module by Bound Optics (TOMBO), uses a compound-eye lens to capture images. Image processing techniques like sampling and backprojection retrieve target object details from these multiple captured images.

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    Area of Science:

    • Optics and Photonics
    • Computational Imaging
    • Image Processing

    Background:

    • Traditional imaging systems often require bulky optical configurations.
    • The need for compact, lightweight imaging solutions is critical in various applications.
    • Compound-eye optics offer a potential pathway to miniaturized optical systems.

    Purpose of the Study:

    • To introduce and evaluate a compact image-capturing system named TOMBO (Thin Observation Module by Bound Optics).
    • To demonstrate the feasibility of using a compound-eye imaging system for a thin optical configuration.
    • To explore image retrieval methods for reconstructing target images from captured data.

    Main Methods:

    • Development of the TOMBO system utilizing a compound-eye imaging principle.
    • Implementation of image processing algorithms, specifically image sampling and backprojection, for image retrieval.
    • Verification through computer simulations and preliminary experimental studies on an evaluation system.

    Main Results:

    • The TOMBO system successfully demonstrates a thin optical configuration using compound-eye optics.
    • Image retrieval from multiple captured images is achievable using the proposed processing methods.
    • Simulations and experiments provide initial validation of the system's principles and highlight implementation challenges.

    Conclusions:

    • The Thin Observation Module by Bound Optics (TOMBO) presents a viable approach for compact imaging.
    • Compound-eye optics combined with appropriate image processing can enable thin optical designs.
    • Further research is needed to optimize processing techniques and address implementation issues for practical applications.