We call induction, “the best kept secret in lighting”. The light source is provided by a electrodeless lamp. The power required to generate light is transferred from the outside of the lamp envelope by means of electromagnetic fields. Benefits to retrofitting traditional lights with induction include extended lamp life, 50% savings in labor cost and a service life about five times that of High Pressure Sodium. Induction lighting also has less glare.
- Superior Lifetime - 100,000 hours (up to 100x longer)
- Superior Light Quality - Higher CRI (better quality white light)
- Superior Energy Efficiency - More visible lumens per watt (less power consumed). Less lumen depreciation over long burns. Low lamp temperatures.
- Superior Performance - Instant-On, Instant Re-Strike. Flicker & Glare Free
- Disposal Environmentally friendly (recyclable waste)
How Does Induction Work
Induction lighting is created when electromagnetic transformers made of coils and ferrite rings create an electromagnetic field around an argon filled gas tube. In the discharge path, free electrons collide with mercury atoms exciting the electrons to product light. When excited, ultra violet radiation is emitted that converts into visible light. The high frequency is generated by an electronic ballast. Induction lighting has less glare than traditional HPS, does not generate as much heat and has a rated life of 100000 hours. Induction technology has better quality lighting, a 50% savings in lighting labor cost and service life about five times that of HPS.
Induction systems do not rely on a burning filament or electrodes to generate light, therefore there are no components to burn out which typically reduce lifespans. As a result, induction systems last up to 100,000 rated hours, saving replacement and labor costs and producing less waste.
Induction systems are far more efficient with newer and better technology.
Our electronic ballasts generate power at up to .99x conversion rate. This means more energy ¡s converted to light and less energy is lost as heat. As a result, our lights burn much brighter and much cooler with about only half the energy!
Why is induction better? Better Quality Lighting
How is it that an 85w Induction System can replace a 150w HID system? How is it that the visual acuity is actually improved with the induction system?
Believe it or not, light that is generated by different methods produce light of different qualities. Our eyes perceive this light differently, therefore affecting our vision.
Light Source -> Lighting -> Vision
Extensive research has been conducted to better understand Mesopic vision; more specifically, how ‘Scotopic’ vision, which stimulates the photo receptors called rods in the human eye, cause pupil contraction and increased visual acuity. It was found that scotopically enhanced light appeared brighter even when light levels were reduced; thus the potential to reduce wattage while improving lighting.
The ratio of Scotopic light vs. Photopic light in a lamp is called S/P ratio. This ratio determines the apparent visual brightness of a light source. Induction lighting produces a high SIP ratio and this is why the 85w lamp appears as bright or brighter to the human eye than a sodium vapor or metal halide of twice the wattage.
Visual Effective Lumens (VEL) is a key factor in vision and many traditional lumen meters will not measure this conversion factor accurately.
Human visual perception in low-light (night-vision), directed by the rod cells in human eyes
Human color vision under normal conditions during the day, directed by cone cells in the human eye
The combination between Photopic and Scotopic vision taking into account the total sensitivity of the rod cells in the eye for blue range, with the color perception of the cone cells.
Induction Compared to Traditional Ligthing
The high quality light produced by induction lights creates a much whiter, brighter, and cleaner light at only half the wattage of traditional lights.
Take a look at the added advantages of induction lighting in the chart below!
Estimated Lumen Drop-off
Induction rated lumen drop-off is largely determined by operating temperature of the lamp and quality of lamp design. Our induction systems are designed and manufactured with high quality tri-phosphors and solid amalgam to optimize the performance and rated life of the lamp. The chart below is intended to represent an average rated lumen output stated as a percentage of the initial lumen output over the rated life of the lamp. Operating the lamp within the temperatures specification will typically result in an average estimated 70% lumen output at 60,000 hours.
There are many benefits to induction lighting beyond just the energy saved. In addition to the longer lifespan, there are lower maintenance costs, replacement costs, and other affected utility reductions such as reduced cooling and air-condition due to lower lamp temperatures.
Induction vs. Traditional HID’s
What are the actual benefits of induction lighting? Let’s take a closer look at the calculated savings from an actual retrofit example!