SpectroCam, Spectrometer and Camera, coaxial and synchronised.

SpecCam & notebook

SpecCam & notebook

The SpectroCam is a combination of a spectrometer [right bottom, Ocean Optics usb2000+] and a coaxial digital camera [black box on top].

The SpectroCam comes with a tripod for stable pointing. In the next image the Notebook shows two monitoring windows. One for the camera and one for the spectrometer.

The SpecCam is viewing the dual display and displaying the spectrum of it view as defined by the slit image .

Camera Spectrum dual screen

The RGB camera window has an overlay defining the FOV of the spectrometer relative to the much wider FOV of the camera. The camera is of the high definition type, it has a spectral resolution of 3 bands [RGB] .

Tile image with spectrometer FOV overlay.

Tile image with spectrometer FOV overlay.

The spectrum window shows instrument parameters and the current spectrum. The spatial resolution is represented by a rectangle of 18 pixels wide and 50 pixels high  The spectral resolution is defined by 2048 samples over the range of wavelengths from 350-1050 nm.

Spectrum of tiles, Photon count as a function of wavelength.

Spectrum of tiles, Photon count as a function of wavelength.

The generalisation of the spectral sample beyond its FOV is done by segmenting the RGB area from the RGB values in the slit’s image. This allows an optimised sampling strategy by moving the FOV of the spectrometer to the next homogeneous area.

Images and spectra are coaxial and synchronous, stored in a database with other relevant instrument and object parameters. A precise time-stamp relates the images to the corresponding spectra.

A white reference target can be added for deriving reflectance data from reflected photon-flux data and incident photon flux.

Applications: spectral analysis “in vivo” for environmental fieldwork. Detection and measurement of gasses and dust in the atmosphere, components of water pollution, verification of models for vegetation, soil and mineral reflectance. Energy balance and CO2 balance studies. Determination of filter characteristics for spectral imaging camera [multi- or hyper-spectral cameras].