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Suomeksi

Outdoor lighting and visual & biological effects of light

Members:

Professor, D.Sc. (Tech.) Liisa Halonen
Researcher, D.Sc. (Tech.) Pramod Bhusal
Postdoctoral Researcher, D.Sc (Tech.)Leena Tähkämö
Doctoral Candidate, M.Sc. Wei Luo
Doctoral Candidate, M.Sc. Islam Mohammad Shahidul
Doctoral Candidate , M.Sc. Janne Viitanen
Doctoral Candidate, M.Sc.Rajendra Dangol

Research Areas:
  • Road and Street Lighting
  • Vision at Low Light Levels
  • Mesopic Spectral Sensitivity
  • Visibility of Flashing Lights
  • Road and Street Lighting Measurements
  • Control of Road and Street Lighting
  • LEDs in Street Lighting
Facilities:
Research Projects:
  • LightEnergy (2012-2016): Efficient and Safe Traffic Environments
  • SSL4EU- Solid State Lighting for Europe (2010-2013)
  • SolarLED: LED lighting based on solar electricity - supply model for energy-efficient and sustainable lighting (2008-2011)
  • VaLOT - Optimisation of Road Lighting – Development of Road Surface, Lighting Control and Maintenance (2005-2008)
  • Development of Performance Based Mesopic Photometry (2005-2008)
  • ENLIGHTEN: Creation of Basis for Educational and Research Networking Between Europe and Nepal Through the Initial Collaboration in Lighting and Energy Technology Development , EC Asia-Link (2005-2008)
  • CIE TC1-58 Visual Performance in the Mesopic Range (2004-2008)
  • PROMILL – Promoting Illuminating Engineering Studies, Research and Continuing Co-operation Between Europe and China, EC Asia-Link (2003-2006)
  • Perception of Visual Targets in Central and Peripheral Vision (2002-2005)
  • MOVE – Mesopic Optimisation of Visual Efficiency, EC Growth (2002-2004)
  • Development of Road Lighting Technology and Dimensioning (2002-2003)
  • LED Sector Light (2001-2002)
  • Development of Lighting Technology and Dimensioning at Low Light Levels (1998-1999)
Publications:
  • Puolakka M., Halonen L. CIE new system for mesopic photometry. Proc of CIE Lighting Quality and Energy-Efficiency, CIE x035:2010, p. 457-462.
  • Ylinen A., Puolakka M., Halonen L. Impact of mesopic design on outdoor lighting energy. Proc of CIE Lighting Quality and Energy-Efficiency, CIE x035:2010, p. 475-481
  • Halonen L., Puolakka M. (Ed.) Recommended System for Mesopic Photometry Based on Visual Performance. CIE 191: 2010.
  • E. Rautkylä, M. Puolakka, E. Tetri and L. Halonen. Effects of Correlated Colour Temperature and Timing of Light Exposure on Daytime Alertness in Lecture Environments. Journal of Light & Visual Environment, Volume 34 Number 2, August, 2010.
  • Bhusal P., Bista D., Puolakka M., Halonen L., Fuel based lighting in developing countries and their replacement with LEDs - Case study from Nepal, Proceedings of CIE 2010 "Lighting Quality and Energy Efficiency", Vienna, Austria, 14-17 March, 2010, pp.500-504.
  • Puolakka M., Guo L. Halonen L. Sistemas inteligentes de controle de iluminacao rodoviaria. Electricidade Moderna, Vol 38, No 432, March 2010, p. 144-165.
  • Ekrias, Aleksanteri; Eloholma, Marjukka; Halonen, Liisa, The effects of colour contrast and pavement aggregate type on road lighting performance.
    Light & Engineering, 2009. Vol. 17, nro 3, pp. 76 - 91.
  • Rautkylä E., Teikari P., Puolakka M., Halonen L., “Evaluation of Today’s Research Methods for Assessing Light-Induced Alertness”, In: EXPERIENCING LIGHT 2009 International Conference on the Effects of Light on Wellbeing (Eds. de Kort Y., IJsselsteijn W., Vogels I., Aarts M., Tenner A., and Smolders K.), 2009, pp. 162 – 173.
  • Bista D., Chhetri B.B., Bhusal P., Eloholma M., Halonen L. Future and Challenges of LED Lighting in Nepal. Sähkö&Tele (2008) 6, pp. 48-51.
  • Ekrias, A., Guo, L., Eloholma, M., Halonen, L. Intelligent road lighting control in varying conditions. Light & Engineering, vol. 16(1), pp. 72-78, 2008.
  • Bhusal P., Zahnd A., Eloholma M., Halonen L. Energy-efficient Innovative Lighting and Energy Supply Solutions in Developing Countries. International Review of Electrical Engineering (I.R.E.E.), Vol 2, no. 5, pp. 665-670, 2007.
  • Viikari M., Eloholma M., Halonen L. Definition of visual performance and related terms- Questionnaire to CIETC1-58 members. Report 43. Helsinki University of Technology, Lighting Laboratory 2007. 20 p.
  • Goodman T., Forbes A., Walkey H., Eloholma M., Halonen L., Alferdinck J., Freiding A., Bodrogi P., Varady G., Szalmas A. Mesopic visual efficiency IV: a model with relevence to night-time driving and other applications. Lighting Research and Technology , Vol. 39, No. 4, pp. 365-392, 2007.
  • Varady G., Freiding A., Eloholma M., Halonen L., Walkey H., Goodman T., Alferdinck J. Mesopic visual effiency III: Discrimination threshold measurements. Lighting Research and Technology , Vol. 39, No. 4, pp. 355-364, 2007.
  • Freiding A., Eloholma M., Ketomäki J., Halonen L., Walkey H., Goodman T., Alferdinck J., Varady G., Bodrogi P. Mesopic visual efficience I: Detection threshold measurements. Lighting Research and Technology , Vol. 39, No. 4, pp. 319-334, 2007.
  • Eloholma M. Valon vaikutus vireyteen ja mielialaan. Projektiuutiset, No. 5, s. 70-71, 2007.
  • Gligor V., Partonen T., Eloholma M., Halonen L. Visual performance and melatonin levels during exposure to mesopic light of monochromatic wavelengths. Svetotechnika No. 5, pp. 9-13, 2007.
  • Viikari M, Chen W, Eloholma M, Halonen L, Chen D. Comparative study of two visual performance based mesopic models based on reaction time and contrast threshold data. Light & Engineering, Vol. 15, No. 2, pp. 24-35, 2007.
  • Eloholma M, Halonen L, Bhusal P. LED-valaistusta Nepalin syrjäseutujen tarpeisiin. Sähköala 8/2007, vol 50, pp. 16-18.
  • Ekrias A, Guo L., Eloholma M., Halonen L. Intelligent road lighting and effects of weather conditions on road luminances. Proceedings of the 26th session of the CIE, Beijing, China, 4-11 July 2007. pp. 108-109.
  • Orreveteläinen P., Eloholma M., Halonen L. Mesopic spectral sensitivity and related CIE standardisation work. Proceedings of the 26th session of the CIE, Beijing, China, 4-11 July 2007. pp. 34-37.
  • Bhusal P., Zahnd A., Eloholma M., Halonen L. Replacing Fuel Based Lighting with Light Emitting Diodes in Developing Countries: Energyand Lighting in Rural Nepali Homes. LEUKOS, The Journal of the Illuminating Engineering Society of North America, Vol 3, no. 4, pp. 277–291, 2007.
  • Guo L., Eloholma M., Halonen L. Road lighting control systems – overview and case study. International Review of Electrical Engineering (IREE), Vol. 2, No. 1, pp. 14-20, 2007.
  • Gligor V., Viikari M., Eloholma M., Halonen L., Partonen T. Visual performance and melatonin concentration during exposure to mesopic light levels of different wavelengths. Proceedings of the 2nd CIE Expert Symposium on Lighting and Health, Ontario, Canada
  • Eloholma M, Bhusal P, Halonen L. LEDit / valoa myös Napalin vuoristokyliin. Plaani 1-2007.
  • Orreveteläinen P., Models for spectral luminous efficiency in peripheral vision at mesopic and low photopic luminance levels. HUT Lighting Laboratory. Doctoral Thesis, 2005.
  • Eloholma M., Development of visual performance based mesopic photometry. HUT Lighting Laboratory. Doctoral Thesis, 2005.
  • Eloholma M., Ketomäki J., Halonen L ., New model for mesopic photometry applicable for night-time driving conditions, In Proc International Symposium of Automotive Lighting ISAL2005, Darmstadt, Germany, pp. 515-524.
  • Orreveteläinen P., Eloholma M., Halonen L. Contrast thresholds of flashing coloured stimuli in peripheral vision at low light levels. Ingineria Iluminatului 2005, 14, pp. 25-36
  • Eloholma M., Halonen L . Performance based model for mesopic photometry. HUT Lighting Laboratoy, Report 35, 2005.
  • Eloholma M., Liesiö M., Halonen L, Walkey H, Goodman T, Alferdinck J, Freiding A, Bodrogi P, Várady G. Mesopic models –from brightness matching to visual performance in night-time driving: a review. Lighting, Research and Technology 2005, 37 (2), pp.155-175.
  • Eloholma M ., Ketomäki J.,Halonen L. Luminances and visibility in road lighting - conditions, measurements and analysis. HUT Lighting Laboratoy, Report 30, 2004.
  • Liesiö M. Mesopic models. Masters' Thesis, 2004.
  • Guo L. Mesopic vision in night-time driving. Masters' Thesis, 2004.
  • Eloholma M. Tie- ja katuvalaistuksen luminanssien mittaus. Tie ja liikenne, 11, 2004, pp. 21-23.
  • Eloholma M. Mittauksista apua tievalaistuksen laadunvalvontaan. Sähkö&Tele, 8, 2004, pp. 13-15.
  • Orreveteläinen P. 2003. Boundary issues of an LED sector light. Licentiate's thesis. 63 p.
  • Halonen L., Eloholma M. Promoting studies, research and continuing co-operation in the field of traffic lighting and mesopic vision between Europe and China. Proceedings of PAL 2003, Darmstadt Germany.
  • Ketomäki J., Eloholma M ., Orreveteläinen P., Halonen L. Visibility of coloured targets at low light levels. Proceedings of PAL 2003, Darmstadt Germany.
  • Ketomäki J. Tievalaistus – matalia valotasoja. Tekniikka ja kunta 7/2003. ss. 16-19.
  • Ketomäki J., Eloholma M ., Orreveteläinen P., Halonen L. Mesopic lighting conditions and pedestrian visibility. Ingineria Illuminatului Nro 11, p.29-40, Summer 2003.
  • Orreveteläinen P., Ketomäki J., Eloholma M ., Halonen L.The Effect of Light Spectrum on Peripheral Visibility at Mesopic Levels. Proceedings of CORM 2003, California USA.
  • Eloholma M ., Ketomäki J., Orreveteläinen P., Halonen L. Mesopic visibility conditions and luminous environment in driving. Proceedings of 25 th Session of the CIE, 2003 San Diego USA.
  • Orreveteläinen P., Ketomäki J., Eloholma M ., Halonen L. Effective intensity of flashing signals in peripheral vision. Proceedings of 25 th Session of the CIE, 2003 San Diego USA.
  • Eloholma M ., Ketomäki J., Orreveteläinen P., Halonen L. Pedestrian Visibility in Road Lighting Conditions. Proceedings of Iluminat 2003, Cluj-Napoca Romania.
  • Moisio O. & Orreveteläinen P. LEDit tulevat. Sähkö&Tele 76(2003)8, ss. 16-19.
  • Eloholma M., Halonen L. New Approach for the Development of Mesopic Dimensioning Scales. Proceedings of CIE Expert Symposium 2002 Temporal and Spatial Aspects of Light and Colour Perception and Measurement. 2002.
  • Eloholma M., Ketomäki J., Uusi tievalaistusmittari. Sähkö-Tele 8/2002. ss. 10-11
  • Eloholma M., Halonen L., Ayama M.., Traffic vision and lighting – Co-operation between Japan and Finland. Sähkö-Tele 8/2002. ss. 23-26.
  • Ketomäki J., Eloholma M., TKK:n valaistuslaboratoriolla uusi mittausmenetelmä. Plaani 4/2002. ss. 10-11
  • Halonen L., Eloholma M., Hyvärinen M., Ayama M. & Kanaya S., The Whiteness Perception under several Fluorescent Lamps.. CIE Istanbul 2001 Lighting Congress. Istanbul September 12-14, 2001.
  • Kanaya S., Ayama M., Halonen L., Eloholma M. & Mukai K., A Comparative Study of the Whiteness Perception in Japan and Finland.. CIE Istanbul 2001 Lighting Congress. Istanbul September 12-14, 2001.
  • Eloholma M, Ketomäki J ., Tievalaistuksen uusi aika. Spotti, IDMAN Oy:n asiakaslehti 1/2001, s. 22-23.
  • Ayama M., Eloholma M., Hyvärinen M., Eda T., Kon D., Mukai K., Kanaya S. & Halonen L., Whiteness Perception in Japanese and Finnish under Cool and Warm Fluorescent Lamps. AIC Color 2001. Rochester USA June 24-29, 2001.
  • Eloholma M. ; Työn alla tievalaistus – Valaistuslaboratorio tutkii, mittaa ja koordinoi. Sähkö&Tele 6/2001.
  • Eloholma M., Ketomäki J. Halonen L.; Road Lighting – Luminance and Visibility Measurements. HUT Lighting laboratory, Report 29 2001.
  • Eloholma M., Ketomäki J., Tievalaistustietoa. Sähkö-Tele 8/2001. ss. 16-17
  • Orreveteläinen P. LEDit valon lähteinä. Sähkö&Tele 73(2000)4, ss. 20-23.
  • Halonen L., Eloholma M., Lighting for workplaces - qualitative and quantitative aspects. Work and Safety (Rad Sigur), Vol 4 (1) 2000.
  • Eloholma M ., Halonen L.,Vision at Mesopic Light Levels – The Effects of Light Spectrum. Proceedings of CIE-UK Colour and Visual Scales 2000.
  • Orreveteläinen P. Lightpipe - Indoor Simulation Measurements. Report 26, Helsinki University of Technology, Lighting Laboratory, 2000. 61 p.
  • Ketomäki J. Visual Field at Low Light Levels. Nordisk Belysningkongress 2000.
  • Eloholma M, Ketomäki J. Tievalaistus – harvoin mitattu. Sähkö & tele 8/2000 vol 73, s. 18-20.
  • Eloholma M., Halonen L., Ketomäki J., The effects of light spectrum on visual performance at mesopic light levels. Proceedings of CIE 75 Years of CIE Photometry, 1999.
  • Halonen L., Eloholma M., Spectral sensitivity at mesopic light levels. Spectral sensitivity at mesopic light levels. Proceedings of PAL1999 Darmstadt, Germany.
  • Ketomäki J., Eloholma M .: Valon spektrin vaikutus näkökenttään matalilla valotasoilla, raportti (34 s.) TKK Valaistuslaboratorio 1999.
  • Ketomäki J. Näkökenttä hämärässä – valaistustutkimuksen musta-aukko. Sähkö&tele 8/1999 vol 72, s. 6-9.
  • Ketomäki J. The Effect of the Light Spectrum on the Visual Field at Mesopic Light Levels. In Lux junior ´99 , 4. internationalen Forun für den lichttecnischen nachwuchs.
  • Ketomäki J. Valon spektrin vaikutus näkökenttään mesooppisilla valotasoilla. Diplomityö 1999.
  • Eloholma M. : Spektriherkkyysmuutokset alhaisilla valotasoilla – vaikutukset valaistusmitoitukseen ja valonlähteiden valotehokkuuteen. Uutta ulkovalaistustekniikkaa- seminaarin julkaisu, Suomen Valoteknillinen Seura ry. 1999.
  • Orreveteläinen, P., Soriano, J., Molina, M., Pantoja, A., Baldovi, R., Wallard, J., Persano Adorno, G. & Romero, F. 1999. Development of a Standard Measurement Method for Characterizing Luminous Distribution and Reach of Sea Signals. 24th Session of the CIE. Warsaw, Poland, CIE Central Bureau. pp. 182-186.
  • Soriano, J., Molina, M., Pantoja, A., Baldovi, R., Orreveteläinen, P., Wallard, J., Persano Adorno, G. & Romero, F. 1998. Development of an Standard Measurement Method for the Luminous Characterization of Sea Signals. XIVth IALA Conference. Germany. AISM IALA. pp. 147-163.
  • Orreveteläinen P. 1997. Development of Standard Measurement Methods for Luminous Characterization of Sea Signals. Lux junior '97. Dörnfeld, TU Ilmenau, Fachgebiet Lichttechnik. pp. 208-215.
  • Orreveteläinen P. Rikkilamppu - lähes auringonvaloa kansalle. Sähkö&Tele 69(1996)8, ss. 33-36.
  • Orreveteläinen P. 1995. Induktiolamppu. Diplomityö.

 

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