In recent years, sony has launched a chip with a working wavelength covering visible light + near-infrared (400-1700nm), because ordinary lenses cannot play the performance of high-end chips, urging the development and manufacturing of lenses to move forward to a more high-end field.
Why not suitable?
The first is that the ordinary lens coating is either visible or infrared light band, can not take into account the long band of 400-1700nm.
In addition to lens coating, another reason is that there is a focus shift in ordinary lenses, the refractive index of different wavelengths of light is not the same, the focus is clear under visible light, and it will be blurred under infrared light, if you do not correct, can not confocal, you can not achieve wide spectrum imaging.
That our common security monitoring lens is how to do visible light imaging during the day, infrared fill light at night, infrared imaging, and do not need to re-focus - the secret is to join the ICR switch on the lens.
ICR is equipped with visible light cutoff filter and infrared cutoff filter of different thickness, and the light path is fine-adjusted through the filter of different thickness. In visible light, one thickness filter is used, and infrared light switches another thickness filter, so as to realize the function of bifocal spectrum of visible light and near infrared.
Supports IMX990/991 sensor
We have introduced a wide spectrum lens for the IMX990/991 sensor, which fully corrects the focus shift over an ultra-wide wavelength range and achieves hyperspectral confocal by using ultra-low dispersion glass. The VI series has four lenses ranging from 12 to 35mm.
Product characteristics
Designed for SWIR sensor IMX990/IMX991
Using ultra-low dispersion glass, the focus shift is completely corrected over an extremely wide wavelength range
Mainly used in grain foreign matter detection, food packaging detection, semiconductor silicon wafer detection and other external defects and internal defects detection, as well as food materials, plastics, drugs and other materials sorting.
2023-08-02
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