Indirect Lighting & Energy Conservation Part 5

Category: Environment & Green Technology Published: Monday, 25 April 2016


By making use of above available technologies it is possible to overcome the limitations of natural daylighting like inconsistent and varied intensity levels & direction which have resulted in poor utilization of sunlight in buildings construction. It is possible to use sunlighting/ use of solar energy in indoor working area instead of artificial light consuming large energy by making use of optics/optoelectronics/solar energy technology for indirect lighting of buildings, that can be employed as it provides flexible & optimal light requirements.= 

In the following paragraphs various methodologies generally adopted are considered and attempt of establishing correlation of theoretical methods and actual

practice is made. Possibility of energy saving using latest innovations in LED, Electronics, Photovoltaic is attempted for street lighting of large campuses/cities. 


  • Grade Intersections – 
  • Curves and Grades – 
  • Underpasses – 
  • Converging Traffic Lanes - 
  • Diverging Traffic Lanes
  • Overhead Traffic Signs 
  • Railroad Crossings –
  •  Alleys –
  •  Parking Lots –
  •  Low Level Lighting – 

 Type of Problem with the Street Light 

  • Burn-out 
  • Cycles (turns on and off repeatedly) 
  • Light burns 24 hours a day 
  • Broken glassware 
  • Water or debris in glassware 
  • Pole is bent 
  • Pole needs painting
  • Support arm is bent or broken 
  • Multiple lights are out

 How do street lighting options compare? 

The most cost effective lighting solution is the technology that utilizes Bright Light Solar specialist electronics. This converts the dc power from the battery store to high voltage to drive the lamps.

 To optimise the lamps for most cost effectiveness it is possible to programme the lights to operate only at the times they are needed. This means the lamps can be programmed to run for 5 or 6 hours after dark then switch off until they’re needed again a couple of hours before dawn. By doing this we can reduce the size of the solar panels and offer a lower cost solution.