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High End Spectrometer Rhea

Reference: ADM-Rhea

The Rhea series spectrometer from Admesy offers a unique combination of ease of use and accurate measurement capabilities packed in a robust jacket. The Rhea utilizes a high-end cooled CCD detector for low noise and high dynamic range.

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Martin Labus
Sales Engineer
+49 8153 405-17
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Product description

Rhea series: high end spectrometer

The Rhea series spectrometer offers a unique combination of ease of use and accurate measurement capabilities packed in a robust jacket. The Rhea utilizes a high-end cooled CCD detector for low noise and high dynamic range. The Neutral density filter wheel extends this dynamic range and also adds a shutter function. An ideal device for measurements where ease of use, stability, performance and price are of the essence. 


  • Various standard spectral ranges including UV, VIS and NIR, custom spectral options range from 200 - 1100
  • Cooled high-end CCD detector, cooled to -10 degrees Celsius
  • High optical throughput design
  • Neutral density filter wheel for huge dynamic range
  • Shutter function
  • Low noise
  • Auto-range function
  • Wavelength calibrated
  • Very low stray light
  • Excellent linearity, internally compensated within %
  • Dark current compensated, virtually zero over entire integration range
  • USBTMC compliant, SCPI command set, high speed device
  • USB, RS232, Ethernet connections and trigger in & out for ideal system integration
  • All calculations are carried out inside the device, saving processing power in production environments
  • Robust housing, optimized for mounting and protection in harsh production environments




Spectral ranges

380 - 780 nm

360 - 830 nm

200 - 435 nm

200 - 1100 nm

Custom wavelength options are available: any range between 200 - 1100 nm can be selected for custom applications.

Optical resolution (FWHM)

Depending on chosen option

Order sorting filter

Linear variable filter

Wavelength accuracy

+/- 0.5 nm

Stray light

< 0.05 %

measured at 400 nm with 455 nm cut-off filter with broadband light source

Luminance accuracy

+/- 4 % (after calibration)

Chromaticity accuracy

+/- 0.002 (after calibration)

Non - Linearity

< 1 %

Baseline noise

+/- 6 counts

Fitler wheel

OD0, OD1, OD2, OD3, OD4, shutter function

Integration time

8 ms – 10 minutes

Spectral resolution

Selectable 0.5 nm - 1nm - 2.5 nm - 5nm - 10 nm

Cooling temperature

-10 degrees Celsius


High speed USB, RS232, Ethernet, Trigger connections

Measurement parameters

Spectral output, radiometric data or colour data (Lumen, x,y, DWL, PWL, CRI, CCT, etc.)

Data processing time

14 ms

Size (LxWxH)

230 x 195 x 82.5 mm (without optical system)


3000 gram

Operating temperature

10 - 35 °C

Power consumption

5000 mW

Downloads - High End Spectrometer Rhea

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