Department of Signal Processing and Acoustics

Metrology Research Institute

Metrology Research Institute focuses on optical radiation measurements and related activities. We do not forecast the weather!
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Light is everywhere around us in the form of sunlight, artificial lighting and signaling. Most electrical equipment use either visible or infrared radiation for signaling, displays, sensing, data read-out, or digital communication. Colour is one of the most significant properties in consumer products.

Metrology research of Optical Radiation Measurements is divided into three branches:

  • Radiometry deals with characteristics of light sources and detectors
  • Photometry studies light as humans see it, and
  • Spectrophotometry investigates optical components as well as the optical properties of materials.

Some of the facilities, developed in the laboratory, are at world-leading level, when comparing accuracy, compactness, and operating costs. The group's research concentrates on electronics, modern optics and optical radiation measurements.

Metrology Research Institute is a joint laboratory between Aalto University and MIKES. It is involved in many national and international projects. Most of the research in the laboratory is currently carried out within the frameworks of EURAMET EMRP and EMPIR.

The Institute is the national standards laboratory for optical quantities in Finland, maintaining national standards of optical quantities and carrying out calibrations at the highest level.

The research group is led by Professor Erkki Ikonen. For other staff members, see Aalto People - Signal Processing and Acoustics (note that not all profiles are public). See our detailed project descriptions for information about specific contact persons for each activity.

Research areas

Find out more about the key research areas of the Metrology Research Institute. The pages contain information about our latest projects. For information about our older projects see our Annual Reports Database.

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Photometry

Photometry is the measurement of visible light as perceived by humans. Our current focus is on increasing the accuracy of the energy efficiency measurements of novel light sources, such as LEDs and OLEDs.

Department of Signal Processing and Acoustics
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Radiometry

Radiometry deals with techniques for measuring electromagnetic radiation, in the form of ultraviolet radiation, visible light, and infrared radiation.

Department of Signal Processing and Acoustics
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Spectrophotometry

Spectrophotometry focuses on measuring the amount of light that a sample or an object absorbs or reflects as a function of wavelength using an instrument known as a spectrophotometer.

Department of Signal Processing and Acoustics
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Electrical instrumentation

Off-the-shelf measurement equipment are not always available, and dedicated measurement devices are often built at Metrology Research Institute.

Department of Signal Processing and Acoustics

Latest publications

Evaluating the performance of a double integrating sphere in measurement of reflectance, transmittance, and albedo of coniferous needles

Aarne Hovi, Matti Mõttus, Jussi Juola, Farshid Manoocheri, Erkki Ikonen, Miina Rautiainen 2020 Silva Fennica

Measurement setup for differential spectral responsivity of solar cells

Petri Kärhä, Hans Baumgartner, Janne Askola, Kasperi Kylmänen, Benjamin Oksanen, Kinza Maham, Vo Huynh, Erkki Ikonen 2020 OPTICAL REVIEW

Determining the shape of reflectance reference samples for curved surface reflectors

Dmitri Lanevski, Farshid Manoocheri, Anna Vaskuri, Jacques Hameury, Robert Kersting, Christian Monte, Albert Adibekyan, Elena Kononogova, Erkki Ikonen 2020 Measurement Science and Technology

Calibration of Near-Infrared Detectors Using a Wavelength Tunable Light Source

Kinza Maham, Anna Vaskuri, Farshid Manoocheri, Erkki Ikonen 2020 OPTICAL REVIEW

Cryostat setup for measuring spectral and electrical properties of light-emitting diodes at junction temperatures from 81 K to 297 K

Elvira Martikainen, Anna Vaskuri, Timo Dönsberg, Erkki Ikonen 2020 Review of Scientific Instruments

Predictable quantum efficient detector for low optical flux measurements

Santeri Porrasmaa, Timo Dönsberg, Farshid Manoocheri, Erkki Ikonen 2020 OPTICAL REVIEW

Broadband Electromagnetic Radiation Detector Based on Photoacoustic Effect

Jussi Rossi, Juho Uotila, Toni Laurila, Erkki Ikonen, Markku Vainio 2020 2020 Conference on Lasers and Electro-Optics, CLEO 2020 - Proceedings

Accelerated ageing of organic LED panels using ultraviolet exposure

J Askola, Y Çalkin, A Vaskuri, T Poikonen, E Ikonen 2019 Lighting Research and Technology

Influence of smart lighting control on the lifetime of high power LED luminaires

Janne Askola, Hans Baumgartner, Tomi Pulli, Petri Kärhä, Erkki Ikonen 2019 IOP Conference Series: Earth and Environmental Science
More information on our research in the Research database.
Research database

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