An illuminator for underwater dark field imaging

Abstract

The invention provides an illuminator for underwater dark-field imaging, the illuminator is controlled by an imaging system, the illuminator is located in the imaging area of ​​the imaging system, and the illuminator includes a closed structure and distributed A plurality of lighting units on the structure. The lighting unit can be composed of one, any two or all three of red, green and blue LEDs with central wavelengths, and also includes ultraviolet LEDs in the UVC band. Multiple lighting units constituting the illuminator must include visible light LEDs of red, green, and blue colors; among them, ultraviolet LEDs and other lighting units form an "inserted" distribution. The irradiation direction of the light beam of the lighting unit is perpendicular to the central axis of the structural member and faces the direction of the central axis. The illuminator for underwater dark-field imaging provided by the invention can improve the accuracy of imaging results and at the same time delay the adhesion of underwater organisms.

Description

technical field [0001] The invention relates to the technical field of lighting equipment, in particular to an illuminator for underwater dark field imaging. Background technique [0002] Underwater tiny organisms and particles are an important part of the water environment. The study of these tiny organisms and particles has important scientific significance and application value for water environment science, microbiology, marine science, ecology and other disciplines. Underwater dark-field imaging technology is an important means to obtain and study the information of underwater tiny organisms and particles, and how to realize the illumination of underwater dark-field imaging is one of the key factors to obtain high-quality underwater microscopic or macro imaging. Due to the complex underwater environment and the refraction and scattering of light by the water body itself, obtaining high-contrast and high-resolution color images puts forward high requirements for the ent...

AI Technical Summary

Problems solved by technology

[0004] However, the white LED used in current dark-field lighting equipment is composed of blue light with a center wavelength near 450nm and broad-spectrum yellow light emitted by phosphors excited by blue light. The responses of the three bands of green and blue are usually equivalent, so the image of the camera under white LED lighting will show a bluish effect, which seriously changes the color information of the imaging target itself, making the imaging results inaccurate

Images