With the breakthrough development of short-wave infrared (SWIR) imaging technology, the field of industrial inspection has expanded with new dimensions of visualization.

Traditional visible light cameras use silicon-based sensors with an upper limit of 1100 nm, while short-wave infrared (SWIR) cameras have a wavelength range of 900 to 1700 nm, which is not directly observable by the naked eye. Short-wave infrared camera with unique imaging characteristics, can penetrate plastic, silicon and other visible light can not penetrate the material, so that these items in the observation of the “transparent” effect, so that accurate sorting possible.
Difficulties and challenges
Plastic pellets from beverage bottles go through a multi-step recycling and testing process before being reused in new plastic products.

However, different materials with similar surface colors (e.g. PET and PP) are simply indistinguishable to the naked eye, making the recycling process complicated. Traditional industrial cameras cannot penetrate the plastic material, and X-ray inspection has high costs and radiation safety issues. How to meet the quality requirements of modern production, while ensuring the accuracy of detection and cost control, has become an important choice for enterprises.

MindVision's self-developed short-wave infrared array industrial camera MV-GEL10I, using InGaAs chips, supports 900-1700nm band, integrating visible light and SWIR corresponding bands in one camera, realizing dual-use of one camera, which is an economical, high-performance and low-cost product.
Application Cases
Application in Plastic Sorting and Inspection
Different plastics have unique molecular vibration absorption characteristics in the short-wave infrared band. Based on this characteristic, the detection system realizes identification through spectral measurement. Spectral data are first collected by InGaAs sensors and then analyzed in real time with machine learning algorithms to complete accurate detection of plastics by recognizing the differences in infrared light reflected from the surface of the object.
Product Parameters
MV-GEL10I | |
transducers | InGaAs |
Size of target surface | 12.8×0.0125mm |
Image size | 12.5umx12.5um |
effective pixel | 1024x1 |
maximum line frequency | 18K |
exposure method | frame exposure |
Application Sectors

Packaging Printing

Metal Surface Inspection

PCB Printing Inspection

Photovoltaic Panel Inspection