Health and Environmental Impact

Correct lighting positively influences Health and the Environment. Ergonomic lighting adjusts daily rhythms, improves well-being and boosts job performance.  Efficient lighting reduces energy consumption and limits costs and environmental impact.
Vision is our most important sense and represents more than 80% of sensory perception.  As we age, the eye changes and our eyesight diminishes.
  • The lens becomes yellow, harder and more difficult to focus.
  • The eye is less able to adapt from areas of light to areas of dark.
  • There is clouding of the inner eye which reduces light transmission and increases glare sensitivity.

Light resets our biological clock and regulates our daily rhythms including alertness, hormone production and activity.
  • Blue wavelengths, which are present in cool white light, have the greatest affect on our daily rhythms.
  • Human Centric Lighting (HCL) solutions, which copy the daylight effect, affect our concentration, motivation, well-being and productivity.
  • Direct glare from a lightsource or window, or indirect glare from a reflective surface, may cause health-related problems. Asymmetric task lights cast light at an angle to reduce light reflections, and thereby glare, from the worksurface.
  • Incorrect seating positions adapted in order to see better may cause neck, back or shoulder pains, and sore eyes.
  • Frequent changes in the peripheral field of vision generate stress.

Individual control over workspace lighting increases well-being and productivity.
  • Different work requires different lighting environments.
  • Dimming allows variation in the light which the eye appreciates during the workday.
  • An ergonomic task light ensures optimal workspace lighting by providing individual adjustability.

Correct lighting simplifies orientation and increases perceived safety.
  • Light shows the way and eases orientation.
  • Light improves contrast reduction by making it easier to differentiate between an object and its background.
  • An environment with direct/indirect lighting is preferred by most employees as the direct illumination creates shadows and the indirect illumination creates good contrast through a diffuse light.

Energy-efficient luminaires save cost and help the environment.
  • The efficacy of the lightsource is determined by how much light is produced for each watt used.  This is known as lumens per watt or lm/W.
  • LED lightsources found in energy-efficient task lighting are more efficient than the fluorescent tubes most common in general lighting.
  • The combination of luminaire design, lightsource, and optics determines the efficiency and light quality of a task light.

Clever lighting solutions are necessary to comply with the environmental requirements of the future.
  • National regulations, such as LEED, dictate requirements for energy classes (e.g. energy expenditures in office environments).
  • Energy-efficient luminaires, sensor technology and controls systems may reduce energy use in buildings by up to 90%.

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