Welcome to our websites!

LGS-3 Modular Multifunctional Grating Spectrometer/Monochromator

Short Description:

Product Detail

Product Tags

Note: computer not included


This spectrometer is designed to help students understand the concepts of light and wave phenomena and learn how a grating spectrometer works. By replacing the default grating in the spectrometer with a different grating, the spectral range and resolution of the spectrometer can be altered. The modular structure provides flexible solutions for spectral measurements under photomultiplier (PMT) and CCD modes, respectively. Emission and absorption spectra can be measured. It is also a valuable analytical tool for the studies and characterizations of optical filters and light sources.



To calibrate the spectrum of a selected work window in CCD mode, at least two standard spectral lines are needed within the spectral range of the work window.


Description Specifications
Focal Length 500 mm
Wavelength Range Grating A: 200 ~ 660 nm; Grating B: 200 ~ 800 nm
Slit Width 0~2 mm adjustable with a reading resolution of 0.01 mm
Relative Aperture D/F=1/7
Grating Grating A*: 2400 lines/mm; Grating B:1200 lines/mm
Blazed Wavelength 250 nm
Wavelength Accuracy Grating A: ± 0.2 nm; Grating B: ± 0.4 nm
Wavelength Repeatability Grating A: ≤ 0.1 nm; Grating B: ≤ 0.2 nm
Stray Light 10 -3
Resolution Grating A: ≤ 0.06 nm; Grating B: ≤ 0.1 nm
Photomultiplier Tube (PMT)
Wavelength Range Grating A: 200 ~ 660 nm; Grating B: 200 ~ 800 nm
Receiving Unit 2048 cells
Spectral Response Range Grating A: 300 ~ 660 nm; Grating B: 300 ~ 800 nm
Integration Time 88 steps (each step: approximately 25 ms)
Filter White filter: 320~ 500 nm; yellow filter: 500~ 660 nm
Dimensions 560×380×230 mm
Weight 30 kg

* Grating A is the default grating pre-installed in spectrometer.

Parts List


Description Qty
Grating Monochromator 1
Power Control Box 1
Photomultiplier Receiving Unit 1
CCD Receiving Unit 1
USB Cable 1
Filter Set 1
Power Cord 3
Signal Cable 2
Software CD (Windows 7/8/10, 32/64-Bit Systems) 1

  • Previous:
  • Next:

  • Write your message here and send it to us