Non-automatic focusing feedback type fluorescent navigation system and excitation light self-adjusting method

Abstract

The invention discloses a non-automatic focusing feedback type fluorescent navigation system and an excitation light self-adjusting method. When an endoscope is close to an observed tissue, the objectplane imaging focus is adjusted, so that the tissue is clearly imaged; then the focus adjusting distance is utilized to calculate adjustment parameters required by an excitation light module, performparameter modulation of the excitation light and achieve the self-regulation function of the excitation light module; while the fluorescence imaging is satisfied, the tissue can be prevented from being irradiated by high-power density laser for a long time to reduce injury to biological tissues and reduce the possibility of other photobiosafety.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to a non-automatic focus feedback fluorescent navigation system and an excitation light self-adjustment method. Background technique [0002] Most of the fluorescence endoscope systems on the market now use laser as the imaging light source. In order to ensure the imaging quality and overall effect, the power required by the laser is usually relatively large, and the laser output power of the existing fluorescence endoscope systems is mostly Constant or manually adjustable in steps. However, if the laser output power is constant or stepwise manually adjustable, there will be the following problems: if the front section of the endoscope is close to the target tissue, the area of ​​the tissue receiving the laser light will become smaller, and the optical power per unit area of ​​the tissue will increase; if the laser power Constant, long-term exposure is likely to cause burns or other ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a non-automatic focus feedback fluorescent navigation system and an excitation light self-adjustment method, aiming to solve the problem that the laser output power of the existing fluorescent endoscope system is constant, which is easy to cause burns or other photobiological safety. Problem; however, stepwise manual adjustment of laser power cannot achieve real-time adjustment, which is labor-intensive and time-consuming, and affects imaging quality.

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