Full Range / High Resolution Field Portable
Spectroradiometers for Remote Sensing

SPECTRAL EVOLUTION is a leading manufacturer of field portable and laboratory spectroradiometers and spectrometers for remote sensing applications including geological remote sensing, ground truthing, spectral remote sensing, environmental and climate research, crop and soil research, vegetative studies, forestry and canopy studies, radiometric calibration transfer, upwelling and downwelling measurement and more.

SPECTRAL EVOLUTION spectroradiometers provide:

  • Fast, full-spectrum UV-VIS-NIR measurements – 350-2500 nm with just one scan
  • Superior reliability in the field with 100% diode array optics with no moving parts
  • Bluetooth interface – ditch the rats nest of cables
  • Lithium-ion rechargeable batteries for field use
  • Lightweight and rugged
  • Standalone operation – internal memory holds 1000 scans (PSR+)
  • Getac PS-336 PDA provides GPS, photo tagging, a screen that’s made for viewing in direct sunlight, and an almost unlimited capacity for scans
  • Field switchable optics for varying target sizes and measurement modes

All SPECTRAL EVOLUTION spectroradiometers include our exclusive DARWin SP Data Acquisition and Analysis software for one-touch, full range spectroscopic analysis of samples. DARWin SP automatically saves data as ASCII files for use with 3rd party software without post-processing.

SPECTRAL EVOLUTION Spectroradiometers feature NIST- traceable calibration for spectral radiance & irradiance measurements:

SR-6500 Ultra High Resolution Spectroradiometer

  • 350-2500nm range
  • Three TE-cooled photodiode arrays: 1024 element TE-cooled silicon detector; 512 element TE-cooled InGaAs detector; 512 element TE-cooled extended InGaAs detector
  • Spectral resolution:
    • 1.5nm (350-1000nm)
    • 3.0nm @ 1500nm
    • 3.8nm @ 2100nm

SR-8800 Real Time Access to Field Measurements Including BRDF

  • 350-2500nm range
  • Three photodiode arrays: 512 element silicon detector; 256 element TE-cooled InGaAs detector; 256 element TE-cooled extended InGaAs detector
  • Spectral resolution:
    • 2.8nm @ 700nm
    • 8nm @ 1500nm
    • 6nm @ 2100nm

PSR+ 3500 High Resolution Full Range PortableSpectroradiometer

  • 350-2500nm spectral range
  • 512 element Si array and two 256 element extended InGaAs arrays for best resolution in NIR ranges
  • Spectral resolution
    • 2.8nm @ 700nm
    • 8nm @ 1500nm
    • 6nm @ 2100nm

PSR-2500 Full Range Portable Spectroradiometer

  • 350-2500nm range
  • 512 element Si PDA and 256 element extended InGaAs array
  • Spectral resolution
    • 3.5nm (350-1000nm)
    • 22nm @ 1500 & 2100nm

RS-3500 Portable Spectroradiometer

  • 350-2500nm spectral range
  • 512 element Si array and two 256 element extended InGaAs arrays for best resolution in NIR ranges
  • Spectral resolution
    • 3nm (700nm)
    • 8nm @ 1500nm
    • 6nm @ 2100nm

RS-5400 Portable Spectroradiometer

  • 350-2500nm
  • 512 element UV-Enhanced Si array and one 512 element TE-cooled InGaAs array and one 512 element TE-cooled extended InGaAs array
  • Spectral resolution
    • 2.8nm @ 700nm
    • 6nm @ 1500nm
    • 6nm @ 2100nm

UDS-1100 Field Spectroradiometer

  • 350-1100nm spectral range
  • 512 element Si photodiode array
  • Spectral resolution
    • 3.2nm (350-1100nm)

For budget-minded applications:

PSR-1100f Field Portable Spectroradiometer

  • 320-1100nm range
  • 512 element Si PDA
  • Spectral resolution
    • 3.0nm (320-1100nm)


These scans were generated using DARWin SP Data Acquisition software included with each PSR-Series spectroradiometer. DARWin SP allows users to plot multiple scans on the same graph for easy comparison and analysis. All instruments feature automatic exposure control and auto-shutter for error-free operation.


The PSR+ can also be used for geological remote sensing and mapping, is supremely reliable in the field and can collect spectra in as little as 100 milliseconds. In this graph, the PSR+ was used to measure reflectance of kaolinite (red), illite (light blue), dickite (green).

PSR-Series of spectroradiometers is ideal for:

Spectral Evolution’s lightweight battery operated portable spectroradiometers can be outfitted with FOV lenses or fiber optics. Units can be handheld, tripod mounted or carried with a shoulder strap or backpack for easy use in the field. We offer fiber optic reflectance probes, leaf clips, and portable computers with wireless bluetooth interfaces to speed up your data collection.

Click on image for larger view

RS-3500 Portable Spectroradiometer Bundle for Remote Sensing

For remote sensing applications that demand the use of a fiber optic, SPECTRAL EVOLUTION offers the RS-3500 portable spectroradiometer bundle. The RS-3500 bundle includes the following:

  • SR-3500 spectroradiometer
  • DARWin SP data acquisition software
  • 1.2 meter detachable, metal clad fiber optic cable with SMA- 905 connector
  • NIST traceable radiance calibration for fiber optic cable (fiber mount FOV lense available as optional accessory)
  • Two Lithium-ion rechargeable batteries and two AC chargers
  • Pelican watertight protective hard case
  • Water resistant Tenba shootout mini backpack
  • Getac PS336 rugged handheld PDA tags scans with GPS, photos, and voice notes
  • 5 inch x 5 inch reflectance standard with protective case