What are the characteristics of quartz optical lens in medical testing?

Quartz optical lens has the following characteristics in medical detection:

Optical performance

High transmittance: Shi Ying glass has excellent transmittance, and the transmittance in the visible region is over 90%, which is close to the theoretical limit, and it also has good transmittance for ultraviolet light and infrared light. This feature can make more light pass through the lens, thus obtaining brighter and clearer images, providing more accurate visual information for medical examination, and helping doctors to observe the details of the examination site more clearly.

Low dispersion: its dispersion coefficient is only about 1/3 of that of ordinary optical glass, which means that quartz optical lens has little difference in refraction angles of light with various wavelengths during imaging, which can effectively reduce chromatic aberration, improve imaging quality, make the image color seen by doctors more real and accurate, and is more beneficial to the diagnosis of diseases and the judgment of detection results.

High refractive index: The refractive index of Shi Ying glass is about 1.45. The higher refractive index enables it to achieve smaller volume, lighter weight and higher optical performance when manufacturing lenses with high magnification and high numerical aperture. In medical examination, high-power lens can be used to observe tiny cells, tissues and other structures, helping doctors to find lesions and abnormalities more accurately.

Physical performance

Good thermal stability: Shi Ying glass has very high thermal stability, low coefficient of thermal expansion, no deformation or deterioration at high temperature, and can maintain good optical properties. In some medical testing equipment, such as laser therapy equipment, testing instruments after high temperature sterilization, etc., quartz optical lens can work stably even when the temperature changes greatly, ensuring the accuracy and reliability of testing results.

Strong chemical stability: Shi Ying glass is almost unaffected by all chemicals and has excellent corrosion resistance, which can resist the corrosion of most chemical agents. In the process of medical examination, you may come into contact with various chemicals, such as disinfectants and detection reagents. The chemical stability of quartz optical lens can ensure its service life and optical performance are not affected, and reduce the lens damage and performance degradation caused by chemical corrosion.

Mechanical properties

High hardness: Quartz stone has a high hardness, and the Mohs hardness can reach 7, second only to diamonds. This makes the quartz optical lens not easy to be scratched and worn during use, and can maintain good surface quality, which is beneficial to the normal propagation and imaging of light. In medical testing, the lens needs to be in frequent contact with various testing instruments and equipment. Quartz optical lens with high hardness can better withstand these mechanical frictions and prolong its service life.

Other characteristics

Strong customization: Quartz optical lens can be customized according to different medical testing requirements, including the customization of shape, size, focal length and other parameters. For example, in an endoscope, quartz optical lenses with special shapes and focal lengths can be customized according to different examination positions and observation angles, so as to meet the doctor's needs for clear observation of specific positions.

Good biocompatibility: Quartz stone itself is non-toxic and harmless, has good biocompatibility, and will not have adverse effects on human tissues and cells. Quartz optical lens can ensure the safety of patients and the reliability of detection in medical detection equipment that directly or indirectly contacts with human body, such as some implantable detection devices and in-vitro diagnostic equipment.

Non-fluorescence characteristics: Quartz optical lens will not produce fluorescence under the excitation of ultraviolet light, which is very important for some medical applications that need high-precision fluorescence detection, such as fluorescence microscope detection and fluorescence immunoassay. Non-fluorescence characteristics can avoid the interference of fluorescence background on the detection results, and improve the sensitivity and accuracy of detection.