A fiber-optic lighted forceps fluorescence lifetime detection apparatus

By combining multimode fiber loops and multi-wavelength beams, the problems of low maneuverability and integration in fiber optic tweezers fluorescence lifetime detection technology have been solved, achieving efficient fluorescence lifetime detection and manipulation of small particles.

CN224480407UActive Publication Date: 2026-07-10SHENZHEN UNIV
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Patent Information

Application Number
CN202521330457.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-26
Publication Date
2026-07-10
Estimated Expiration
2035-06-26

AI Technical Summary

Technical Problem

Existing fiber optic tweezers fluorescence lifetime detection technology requires the use of microchannel or microfluidic technology for multi-dimensional controllable operation. This technology is complex to prepare and has low integration, making it impossible to flexibly manipulate tiny particles or cells. Furthermore, the flexibility of manipulating multiple single-mode fibers or splicing multiple types of fibers is limited.

Method used

By employing a multimode fiber loop combination, multiple wavelength beams are used to simultaneously achieve fluorescence lifetime detection and microscale optical manipulation. Two optical signals are transmitted to the displacement control component through a fiber optic circulator to capture target microparticles and detect their fluorescence lifetime.

Benefits of technology

It enables flexible manipulation of tiny particles while efficiently detecting their fluorescence lifetime, making it suitable for ultrafast signal detection in precision large instruments and improving operational efficiency and accuracy.

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Abstract

The utility model provides a kind of optical fiber optical tweezers fluorescence lifetime detection equipment, by the light beam emitted by light source is divided into two ways, using the first optical fiber coupler to the two-way light signal received is coupled, and the light signal after coupling is transmitted to the optical fiber circulator connected, transmission to displacement control assembly by optical fiber circulator. Displacement control assembly utilizes one-way light signal to carry out target micro-particle capture, utilizes another light beam corresponding light signal to excite target micro-particle to generate excitation fluorescence signal, utilizes detection assembly to carry out photon number detection to excitation fluorescence signal, determines the fluorescence lifetime of target micro-particle. The utility model equipment can be realized in flexible control micro-particle, and the fluorescence lifetime of micro-particle is detected, and the utility model is more simple and efficient, applicable to precision large instrument to carry out ultrafast signal detection.
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