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Related Experiment Video

Updated: Jul 10, 2026

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)

Published on: August 4, 2018

Rotary mirror array for high-speed optical coherence tomography.

Nan Guang Chen, Quing Zhu

|November 17, 2007

Summary

This summary is machine-generated.

A novel linear optical delay line offers high-speed, high-duty-cycle performance for optical coherence tomography and optical Doppler tomography. This system achieves rapid scanning with minimal nonlinear errors, enabling advanced biomedical imaging.

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Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)

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Doppler Optical Coherence Tomography of Retinal Circulation

Doppler Optical Coherence Tomography of Retinal Circulation

Published on: September 18, 2012

Area of Science:

Biomedical Optics
Optical Engineering
Medical Imaging Technology

Background:

Optical coherence tomography (OCT) and optical Doppler tomography (ODT) are crucial for high-resolution biological tissue imaging.
Existing delay line systems often face limitations in speed, duty cycle, or accuracy.

Purpose of the Study:

To develop a simple, high-speed, and high-duty-cycle linear optical delay line.
To enhance the performance of OCT and ODT systems through improved scanning capabilities.

Main Methods:

A tilted mirror array rotating at a constant speed was employed to achieve periodic longitudinal scanning.
The system was integrated and tested for its scanning range, repetition rate, duty cycle, and nonlinear errors.

Main Results:

Demonstrated a 2-mm axial scanning range at a typical motor speed of 4000 rpm.
Achieved a 2400-Hz repetition rate with a 94% duty cycle.
Exhibited less than 0.1% nonlinear errors, with potential for higher rates using faster motors.

Conclusions:

The developed linear optical delay line is suitable for advanced OCT and ODT applications.
The system's high speed, duty cycle, and accuracy represent a significant improvement over existing technologies.
Further increases in repetition rates are feasible with high-speed motor integration.