用于全自动生化分析仪的分光器结构设计

Structural Design of Spectroscope for Automatic Biochemical Analyzer

全自动生化分析仪光学系统采用分光器结构,避免了光纤传输的不稳定性,有效地保证了测试结果的精度与稳定性。文中从光学系统设计原理、光栅选型、参数计算、光阑计算及结构设计等5个方面对分光器结构进行设计。该结构采用后分光技术,以全息凹面闪耀平像场光栅作为分光元件,以光电二极管阵列探测器作为信号接收端。全自动生化分析仪检验结果高速、准确,满足临床要求。根据生化仪波长需要,合理选用全息凹面闪耀光栅及光阑,保证测试结果的准确性。

The optical system of the automatic biochemical analyzer adopts a beam splitter structure,which avoids the instability of optical fiber transmission and effectively ensures the accuracy and stability of the test results.The structure of the beam splitter is designed from five aspects:optical system design principle,grating selection,parameter calculation,aperture calculation and structural design.The structure adopts the post-splitting technology,with the holographic concave blazed flat image field grating as the light-splitting element,and the photodiode array detector as the signal receiving end.The test results of the automatic biochemical analyzer meet the clinical requirements with high speed and accuracy.According to the wavelength of the biochemical analyzer,the holographic concave blazed grating and diaphragm are reasonably selected to ensure the accuracy of the test results.