Controlling integrated energy of laser pulses in a fluorescence imaging system

By placing an image sensor at the distal end of the endoscope and using pulsed electromagnetic radiation and a PID control algorithm, a color image superimposed with fluorescence imaging data is generated, which solves the limitations of traditional endoscopes in imaging in low-light environments and improves image quality and system durability.

CN114206196BActive Publication Date: 2026-05-29CILAG GMBH INTERNATIONAL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CILAG GMBH INTERNATIONAL
Filing Date
2020-06-12
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Traditional endoscopes cannot simultaneously achieve color and fluorescence imaging in low-light environments, and their image sensors are easily damaged and cannot be adapted to the distal end of the endoscope, resulting in degraded image quality and expensive multi-system imaging requirements.

Method used

An image sensor is placed at the distal end of the endoscope to capture independent exposure frames through pulsed electromagnetic radiation of different wavelengths, generating a color image superimposed with fluorescence imaging data. A PID control algorithm is used to adjust the light source to ensure the exposure level, combined with a pixel array of variable colors and multi-wavelength fluorescence imaging.

Benefits of technology

It enables the simultaneous generation of color and fluorescence imaging data in low-light environments, improving image quality and sensor durability while reducing system complexity and cost.

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Abstract

Controlling integrated energy of light pulses in a fluorescence imaging system is disclosed. A system is disclosed that includes an emitter for emitting a pulse of electromagnetic radiation and an image sensor including an array of pixels for sensing reflected electromagnetic radiation. The system includes an electromagnetic sensor for sensing energy emitted by the emitter. The system includes a controller configured to synchronize timing of the emitter and the image sensor. The system is such that at least a portion of the pulse of electromagnetic radiation emitted by the emitter includes electromagnetic radiation having a wavelength from about 770 nm to about 790 nm and / or from about 795 nm to about 815 nm.
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