Biochemical analyzer is a precision optical instrument commonly used in biomedicine, clinical diagnosis, food safety and environmental monitoring. Optical filters play a vital role in it.

Principle Of Optical Filter:

The optical filter is based on the characteristics of wavelength selective transmission or reflection of light, and realizes the processing of light of specific wavelength through absorption, transmission and reflection. In the biochemical analyzer, the optical filter can accurately filter out the required wavelength of light, so as to accurately capture and analyze the spectral signal.

The Role Of Filters In It:

1.Optical isolation

The optical filter can effectively isolate unwanted spectral components and avoid them from interfering with the detection results. This ensures that the biochemical analyzer can accurately capture the spectral signal emitted by the target substance, thereby improving the accuracy of the test.

2.Light compensation

Through the adjustment of the filter, the spectral signal can be compensated, so that the spectral signals emitted by different substances can reach a relatively consistent level during detection. This helps to improve the reliability and stability of the test.

3.Light excitation

During the fluorescence detection process, the filter can also be used as a filter for the excitation light source to ensure that only light of a specific wavelength can excite the target substance to emit fluorescence. In this way, precise control of the fluorescence signal can be achieved, thereby improving the sensitivity and specificity of the detection.

4.Light display and sensing

Filters can also be used for the display and sensing of fluorescence signals, converting the captured fluorescence signals into visual images or electrical signals for doctors and researchers to analyze and judge. This helps to realize the automation and intelligence of biochemical analyzers.

Filters are mainly used in the spectroscopic device of the monochromator in the biochemical analyzer. By selecting light of a specific wavelength to measure the absorbance or fluorescence intensity of the sample, the concentration of the chemical components in the sample can be determined. Common types are:

1.Narrowband Filters

Narrowband filters with a half-bandwidth of 10nm, such as 340nm, 405nm, 450nm, 510nm, 546nm, 578nm, 630nm, 670nm, 700nm, etc., have extremely high spectral selectivity and transmittance. These filters can accurately filter out light of specific wavelengths and are suitable for special equipment such as enzyme labelers.

2.Standard Biochemical Filters

Suitable for the optical path system of general biochemical analyzers, with stable spectral performance and long service life.

3.Energy Matching Biochemical Filters

Can perform energy matching according to the optical path system requirements of the biochemical analyzer to ensure accurate transmission and processing of spectral signals.

4.Multi-channel Spectroscopic Biochemical Filters

Can process spectral signals of multiple wavelengths at the same time, suitable for biochemical analyzers that need to detect multiple substances at the same time.

With the continuous development of medical technology, filters have key applications in biochemical analyzers. Their high precision, multi-function, long life and customization will promote the continuous development of biochemical analyzer technology. AOS Optics specializes in customizing filters of various specifications, welcome your consultation!