These types of cameras run in the $5,000- $20,000 range. They are not cheap. This one is a thermal imager. Great for finding heat-loss in houses.
For near-infrared cameras, a Silicon CCD is sensitive to 11,000 Angtroms. You need to go to Gallium-Arsenide-Phosphate for deeper NIR, and other harder-to-make Sensing Elements to get past Near IR. Mercury, Lead, and Tin, etc.