Biologically Efficient Illumination Joint Working Group ZVEI – ELC  Joint Working Group ZVEI  ELC – CELMA  CELMA

Positive effects of Light on Humans …

ELC‐CELMA Position Paper on  Biologically Efficient Illumination  Scientific evidence  Basic requirements  Spectrum  Spatial distribution  Dynamic lighting / Timing

 Biological effectiveness and efficiency  Application fields  Roadmap

ELC / CELMA Position Paper on Biologically Efficient Illumination S i ifi Scientific evidence id  Bright light therapy of seasonal affective disorders  (since 1980s) (since 1980s)  3rd photoreceptor proven in 2001  Circadian stabilization and activation of residents in  nursing homes (many studies over past 10 years)  Improved recovery from depression in hospitals  IImproved d alertness l t and d well being ll b i in offices i ffi and d industry i d t workplaces k l (many studies over past 10 years)  Improved p cognitive g performance ((e.g. in schools) p g )

1.)   Spectrum ) Spect u Higher blue proportions required  for daytime illumination 1st: natural daylight  1 t t l d li ht 2nd: cool white, high blue content

rrel. spectral in ntensity

ELC / CELMA Position Paper ELC / CELMA Position Paper on  Biologically Efficient Illumination  Basic requirements s (

warm white for nighttime V(

Warm White LED

380 420 460 500 540 580 620 660 700 740 780

380

rel. spectrall intensity

rel.. spectral inte ensity

sms

ms

420

460

500

V(

540

sms

580

620

Daylight: Standard Illuminant D65

660

700

740

780

V(

Cool White LED

380

420

460

500

540

580

620

660

700

740

780

ELC / CELMA Position Paper on Biologically Efficient Illumination Basic requirements  Basic requirements 2.)

Spatial distribution

High effectiveness with  2‐dimensional illumination &  large surfaces large surfaces

ELC / CELMA Position Paper on Biologically Efficient Illumination

3.) Dynamic Lighting / Timing 3.)   Dynamic Lighting / Timing 

Orientation on natural daylight



cool white,  „blue“ for daytime



warm white, reduced blue for evening hours, nighttime

rel. illuminatio on level [lx]

 Basic requirements Basic requirements

Example: Dynamic Simulation of Daylight

time

biol. effectiv. Daylight Lx (warmwhite) biol. effectiv. Daylight biol. effectiv. Daylight (coolwhite) LxLx (coolwhite) Sum (biol. effective)

ELC / CELMA Position Paper on Biologically Efficient Illumination

Daytime lighting: Bright Sky

Nocturnal lighting only for vision:

 Wide distribution of light at ceiling and upper walls to effectively stimulate many receptor cells

 Spot Spot-like like illumination on visual tasks to stimulate only few receptor cells

 Indirect lighting

 Use warm white light reduced blue

 Use cool white with higher blue spectral proportions

 Direct light

ELC / CELMA Position Paper on Biologically Efficient Illumination Socio‐economic aspects  Age dependency of biological effects  Proper lighting for each phase and area of human life  Light as supporting parameter for ambient assisted living

0,5

8

12

25

47

60

70

82

91

ELC / CELMA Position Paper on Biologically Efficient Illumination Bi l i l ff i Biological effectiveness and d efficiency ffi i  Effective excitation of retinal ganglion cells is required  Energy efficiency important also for biologically effective  lighting  lighting  Biologically effective proportions cannot be measured with  photopic units like lm, lx or cd/m2 photopic units like lm, lx or cd/m  New photometric units are needed(standardization)   Understanding of „energy efficiency Understanding of energy efficiency“ needs to be revised needs to be revised

ELC / CELMA Position Paper on Bi l i ll Effi i Biologically Efficient Illumination Ill i i Ad t Advantages for customers in many application fields f t i li ti fi ld      

Homes for elderly/nursing homes Homes for elderly/nursing homes Hospitals  Schools universities Schools, universities Offices Industry workplaces Industry workplaces Residential areas

ELC / CELMA Position Paper on Biologically Efficient Illumination Advantages for the Lighting Industry,  Designers, Specifiers   Increased quality of lighting solutions  Demand for higher value solutions  Demand for higher quality services  starting from  consultation and lighting design up to installation

 Prevent reduction of light quality by focusing on luminous efficiency only in EU regulations

ELC / CELMA Position Paper on Biologically Efficient Illumination Industry Rradmap to biologically efficient lighting  y p g y g g Networking and Lobbywork by ELC‐CELMA‐ZVEI joint WG  Network with standardization groups in Germany and EU (FNL 27, WG 13)  Network within EU‘s working groups on  „Ageing Population“  Inform political deciders political deciders

Communication  Press (DE, A, CH & EU)  Contributions for selected congresses and events  Internet (ELC, CELMA, ZVEI websites & social networks) I t t (ELC CELMA ZVEI b it & i l t k)

To note licht.wissen 19  brochure on the Impact of  Light on human beings in Light on human beings in  English  htt // http://www.licht.de/ li ht d /

Thank you for your attention