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MDR-41 Monochromator

ДФС-500 Оптико-эмиссионный спектрометр для анализа металлов
MDR-41 monochromator is intended to be used as a monochromatic light source in a wide spectral range.


MDR-41 monochromator is intended to be used as a monochromatic light source in a wide spectral range.
Off-Axis Parabolic Lens
The instrument is built according to a proprietory optical arrangement using off-axis parabolic lens, which allows a considerable improvement of resolution, and reduction of stray light level in contrast to the conventional Fastie configuration.
A Mirror Condenser
To illuminate the entrance slit of the instrument, a mirror condenser is used which contains an optical filter unit to remove the higher diffraction orders.
Based on the MDR-41 monochromator, OKB SPECTRUM develops and manufactures specialized spectrometric installations for:
  • recording the spectral characteristics of light sources and photodetectors,
  • measuring the transmission spectra,
  • specular and diffuse reflection,
  • for exciting and recording the luminescence spectra.
Liquid and solid samples can be studied with different illumination geometries..
Development of a complex according to your choice
Spectrometric installations are built in accordance with the Customer's design criteria based on a MDR-41 monochromator or others. The installation operation is regulated by a microprocessor controller consisting of a base unit with a processor board and a stepper motor control board. Using additional modules, the controller provides a photomultiplier tube (PMT), photodiode, thermoelectric-cooled photoresistor, CCD array, performs signal detection in DC amplifier modes, photon counting, and synchronous detection. The controller is configured in accordance with the choice of the customer.
Depending on the required wavelength range and type of application, the installation is equipped with:
  • light sources (lamp, laser, globar) and detectors (PMT, photodiode, thermoelectric-cooled photoresistor, pyroelectric detector), respectively,
  • projection optical system ,
  • sample holders of the required configuration with the necessary motion adjustment mechanisms,
  • a temperature lamp for energy calibration,
  • a device for video surveillance sample area under investigation using a conventional lens or video camera, etc.
Installation and Management
Installations are mounted on the same optical bench; laboratory furniture and accessories can also be supplied. The signal is detected in the modes of a DC amplifier, photon counting, and synchronous detection. Installation control and data processing is carried out from an external PC.
Оптическая система
Регистрация всего спектра, а не отдельных линий, как в случае использования фотоумножителей, открывает практически неограниченные возможности по анализу сплавов самых разных типов на одном приборе. Для решения задач, требующих коротковолнового ультрафиолета, полихроматор продувается аргоном или азотом. Расход газа составляет 0.05 л/мин., что существенно меньше расхода на продувку штатива. По сравнению с вакуумной, продувная конструкция более легкая и дешевая, она проще и надежнее в эксплуатации при этом обеспечивает такие же спектроскопические возможности прибора.