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C ortisol

Simplified illustrations of visual and circadian pathways. Hypophysis - regulates daily and seasonal circadian rhythms. Visual cortex. Pineal gland. Melatonin. Biologic nerve 3 receptor. Retina. Adrenal cortex (spinal cord). C ortisol. Visual Photopic lane.

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C ortisol

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  1. Simplified illustrations of visual and circadian pathways Hypophysis - regulates daily and seasonal circadian rhythms Visual cortex Pineal gland Melatonin Biologic nerve 3 receptor Retina Adrenal cortex (spinal cord) Cortisol Visual Photopic lane Biological lane Optic nerve 1-2 receptor rods and cones

  2. New study - the background luminance and colour temperatures influence on alertness and mental health Govén, Laike, Pendse, Sjöberg 2006 Purpose ”to lay down the appropriate luminance levels at different colour temperatures for ambient lighting within working areas” Science studies effect on lighting design, Nov 2006T.Govén

  3. Eh=500 lx Fluorescent T5-tubes 3000K Fluorescent T5-tubes 4000K Fluorescent T5-tubes 3000K Fluorescent T5-tubes 4000K Lav 1 = 20 cd/m2 Lav 2 = 100 cd/m2 Lav 3 = 350 cd/m2 Methodology of the test ±30° ±30° 36 subjects Test room 1 Test room 1 Test room 2 Test room 2

  4. The Pickhurst study

  5. Energy Consumption

  6. Our research about ambient lighting, light and health Does pupils feel and perform better in indirect LED? Does ambient light affect learning? 2013 Direct or direct/indirect light? 2011 2009 2007 ! 2001 2002 Vertical light – LED or T5? Vertical light – does levels and colour temperature matter? The third receptor!

  7. Indira Indirect/Wallwasher Indira Indirect/Wallwasher Indira Wallwasher

  8. Visual Biological Emotional Well Being

  9. Your eye

  10. What is the size of your eyeball? Ø: 24mm

  11. What is a solid angel? 0,5 Sr D: 40cm Ø: 14mm 50cm

  12. Your eyeball from the side 0,5 Sr Fovea Ø: 14mm Ganglion cell area

  13. Your eyeball from the front 0,5 Sr Ganglion cell area Ø: 14mm

  14. View from my office Horizontal reference line

  15. Luminance view from my office Horizontal reference line

  16. View at my desk

  17. My environment Vertical reference line < 0,5 Sr < 0,1 Sr Horizontal reference line

  18. Luminance view at my desk < 0,5 Sr < 0,1 Sr

  19. Evening view at my desk

  20. Luminance evening view at my desk < 0,5 Sr < 0,1 Sr

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