5-Part differential hematology analyzer optical system

Abstract

The invention relates to the technical field of human body blood detection apparatuses, and discloses a 5-part differential hematology analyzer optical system. The 5-part differential hematology analyzer optical system comprises a front light shaping assembly, a sample shaping assembly and a diffusion light receiving assembly. The front light shaping assembly is characterized by arranging a laser, a collimating lens, a fast axis focusing lens and a slow axis focusing lens in an optical path, and the fast axis focusing lens and the slow axis focusing lens are fixed in a shaping lens barrel capable of rotating for 360DEG; and the diffusion light receiving assembly is characterized in that three annular light through holes are arranged on a diaphragm to form a low angle scattered light transmission area, a medium low angle scattered light transmission area and a medium high scattered light transmission area, a photoelectric detection array corresponding to the three annular light through holes is provided with a low angle lighting electric detector, a medium low angle lighting electric detector and a medium high lighting electric detector, and the detectors respectively output electric signals. The diffusion light reception of the optical system is realized by directly acquiring leucocyte diffusion light signals in three different areas in an approaching 360DEG range, and the integrated photoelectric detector array is adopted, so the optical system has the advantages of simple optical path structure, low cost, use convenience, stable signal source and high accuracy.

Description

technical field [0001] The invention relates to the technical field of human blood detection instruments, in particular to an optical system of a five-classification blood analyzer for detecting blood by using a light scattering method. Background technique [0002] Routine blood testing is an in vitro testing item widely carried out by hospitals at all levels. At present, the methods for classifying blood cell counts usually use impedance method and optical method. Since the impedance method is only classified according to the size of blood cells, it can only get three-group classification results for white blood cells. Most of the impedance methods are applied to red blood cell and platelet counts on five-class blood analyzers; optical methods are relatively more widely used. Some, because the multi-dimensional information of blood cells is used to classify cells, it can not only count blood cells, platelets and white blood cells, but also divide white blood cells in more ...

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Problems solved by technology

The patent CN200610062982 flow cytometer uses a plurality of aspheric mirrors, cylindrical mirrors and beam splitting prisms, and the manufacturing cost is high; the signal processing unit uses a beam splitting prism to divide the optical path into two paths, resulting in a huge optical system and many parts that need to be adjusted , the installation and adjustment steps are cumbersome and complicated, and the manufacturing cost and maintenance cost are high

In the optical system of the patent CN201310213994 particle analyzer, the scattered light collection component is divided into two independent parts, which are respectively adjusted for the diaphragm and photoelectric detection. The middle angle and the large angle only selectively receive part of the area, the signal quality is poor, and its structure is complicated , the detection data is not comprehensive

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