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Related Experiment Video

Updated: Jul 8, 2025

Lensless Fluorescent Microscopy on a Chip

Lensless Fluorescent Microscopy on a Chip

Published on: August 17, 2011

Lensless single-fiber ghost imaging.

Toshitaka Wakayama, Yudai Higuchi, Rikuto Kondo

|December 18, 2023

Summary

This summary is machine-generated.

This study introduces lensless single-fiber ghost imaging, enabling illumination and collection via one fiber. This technique achieves high spatial resolution with extremely low illumination power, advancing optical imaging capabilities.

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Last Updated: Jul 8, 2025

Lensless Fluorescent Microscopy on a Chip

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Published on: August 17, 2011

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

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Published on: July 5, 2016

High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging

High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging

Published on: January 11, 2011

Area of Science:

Optics and Photonics
Biomedical Imaging

Background:

Conventional imaging systems often require complex optical setups and high illumination power.
Single-fiber imaging offers potential for minimally invasive procedures but faces resolution and sensitivity challenges.

Purpose of the Study:

To demonstrate a novel lensless ghost imaging technique using a single optical fiber.
To achieve high-resolution imaging with significantly reduced illumination power.

Main Methods:

Developed a lensless single-fiber ghost imaging system utilizing improved differential ghost imaging.
Reconstructed images from speckle patterns generated by a single 105 µm diameter optical fiber.
Employed a diffuser and 30,000 speckle patterns for image reconstruction.

Main Results:

Achieved a spatial resolution of 0.05 mm over a 9 mm² area at a 10 mm working distance.
Demonstrated imaging with extremely low laser power density (0.10 mW/cm²) compared to conventional methods (94 mW/cm²).
Attained an average coincidence degree of 0.45 with the developed system.

Conclusions:

Lensless single-fiber ghost imaging offers a promising alternative for high-resolution, low-light imaging applications.
The technique eliminates the need for a transmission-type system, simplifying optical design.
This advancement has potential implications for minimally invasive endoscopic imaging and other sensitive optical measurements.