QHYCCD QHY990 Series SWIR Camera

The QHY990 is designed for scientific and industrial short-wave infrared (SWIR) applications. Its high sensitivity between 400 nm and 1700 nm makes it ideal for material sorting, agricultural analysis (e.g., moisture content), semiconductor inspection, medical imaging, and SWIR spectroscopy.

InGaAs sensors inherently produce a higher dark current than silicon-based CMOS or CCD sensors. The QHY990's regulated cooling system, which can lower the sensor temperature by 35°C below ambient, is essential for reducing this thermal noise. This allows for longer exposure times and cleaner data, which is critical for detecting faint signals.

The Copper-to-Copper interconnect is a modern sensor manufacturing technique that creates a more direct and efficient connection between pixel layers. For the QHY990, this results in significantly lower Fixed-Pattern Noise (FPN) and a very low defect pixel ratio, leading to cleaner, more uniform images that require less complex calibration.

Yes, this is an excellent application for the QHY990. Water has strong absorption bands in the SWIR range, particularly around 1450 nm. The camera's high sensitivity across the 400 nm to 1700 nm spectrum allows you to capture detailed spectral data in this region to quantify moisture content accurately.

Silicon becomes transparent at wavelengths longer than approximately 1100 nm. The QHY990's peak sensitivity at 1200 nm and its broad response out to 1700 nm allow it to see through silicon wafers to detect subsurface defects, cracks, or misalignments that are invisible to standard visible-light cameras.

The QHY990 camera includes an integrated holder for standard 25mm diameter filters. This is a common size for laboratory applications, allowing you to easily install various SWIR bandpass, longpass, or shortpass filters to isolate specific wavelengths for your research.