A fluorescence excitation module for a microscope

By incorporating two emission filters and a high-power LED light source into the microscope's fluorescence excitation module, the fluorescence imaging problem of the Greenau optical path stereomicroscope was solved, improving imaging quality and observation accuracy while reducing costs.

CN224436675UActive Publication Date: 2026-06-30GUANGZHOU LISS OPTICAL INSTR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGZHOU LISS OPTICAL INSTR
Filing Date
2025-07-16
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing Greenau optical path stereomicroscopes, the angle between the emission filter and the objective lens during fluorescence imaging causes the imaging background to be mixed with the fluorescence of the observed sample, affecting the imaging quality and clarity. In addition, the fluorescence illumination is insufficient, increasing the difficulty and error of observation.

Method used

Two emission filters are set in the fluorescence excitation module. The two filters cover the optical paths and overlapping parts of the two sets of excitation light sources. High-power LED light sources are used, the brightness of which is adjustable, and they are set at right angles to the imaging optical path to avoid reflected light affecting the imaging.

Benefits of technology

It improves the accuracy and stability of fluorescence imaging, reduces the influence of the angle between the emission filter and the imaging optical path, ensures the consistency and safety of observation results, extends service life, and reduces production costs.

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Abstract

This invention provides a fluorescence excitation module for a microscope, relating to the field of microscope auxiliary equipment technology. The module includes a lower base, a middle base, and an upper base, wherein two emission filters and two sets of excitation light sources are embedded within the middle base. The advantage of this invention is that the two emission filters in the fluorescence excitation module cover the optical paths and overlapping areas of the two sets of excitation light sources, effectively preventing reflected light from affecting imaging and reducing the impact of the angle between the emission filters and the imaging optical path on the fluorescence excitation focusing system during microscopic imaging. During continuous zooming in a stereomicroscope, the fluorescence excitation focusing system does not interfere with the zoom system, resulting in relatively consistent stereo fluorescence imaging effects and ensuring the accuracy and stability of the observation results.
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