According to the scanning principle of hyperspectral camera, it can be divided into four kinds, which are also the most common hyperspectral cameras on the market: point scanning hyperspectral camera, line scanning hyperspectral camera, spectral scanning hyperspectral camera and snapshot hyperspectral camera. In the process of image acquisition and color detection, these four kinds of hyperspectral cameras can obtain images with different wavelengths.
Point scanning is to obtain the spectral data of one point at a time. The imaging equipment is a spectrometer. It can be used on satellites and requires degrees of freedom in two directions.
Line scanning is to obtain spectral data on one line at a time. The imaging equipment is a spectrometer and gray camera. Due to its high spectral resolution and fast imaging, it is most widely used at present.
Spectral scanning is to obtain images of one band at a time. The imaging equipment is an adjustable filter and gray camera.
Snapshot is to obtain a three-dimensional hyperspectral image at a time. At present, the application is mostly realized by multi-channel filter. Fast imaging, but low spectral resolution.

The hyperspectral camera figspec FS series developed by our company belongs to line scanning imaging.
The figspec FS series of hyperspectral camera adopts the optical design of high transmittance, which improves the focusing ability of the camera to a new standard. Only one linear light source is needed to meet the equipment requirements. However, other spectroscopic techniques (adjustable filter and linear filter, etc.) require a larger area of light source and dozens of times of light source intensity when the data have the same signal-to-noise ratio. The spectral range covers 400-1000nm, the full spectrum acquisition and high-speed imaging, and it has the function of band selection (ROI) to achieve higher speed.

Hyperspectral camera FS series
Schematic diagram of hyperspectral camera line scanning
The figspec FS series of hyperspectral cameras can be widely used in the fields of machine vision, color detection and visible / near infrared detection.
• spectral range: 400-700nm, 400-1000nm, wavelength resolution 2.5nm 
, up to 1.5nm (changing the slit size to achieve higher spectral resolution, but will affect the signal strength)
• frame rate: full optical spectrum acquisition can reach 128Hz, up to 3300hz after ROI
• support multi regional ROI
• color difference detection: surface color and texture detection of printing, textile and other industrial products
• with special light source and control system, the repeatability of single pixel of color measurement can reach deab < 0.1