Beware the Blue Light

That bright blue LED light, found on many electronic devices, may be the cause of eye strain, headaches and even sleep disruption. 

Blue light causes more trouble for the eye than other colors. That is because it is harder for the eye to focus blue sharply. Different wavelengths of light (i.e. different colors) have different refractive indexes as they pass through the eyeball to the retina. Our eyes can easily focus on fine details in red or green light. 

But our retinas can't handle blue light very well. Blue light scatters more widely within the eye and tends to be focused in front of the retina, making it appear slightly out of focus. What we notice is a kind of halo around bright blue lights. They also seem to produce more glare. So blue light can lead to eye strain and headaches as your eye muscles strain to bring fine details into focus. 

The problem is compounded when the light source is an LED. Because of a difference in the manufacturing process, blue LEDs are different from other colors. They can be up to 20 times brighter than traditional red or green LEDs. 

Blue lights are more noticeable in the dark or in dim light because the rods (a type of photoreceptor in the retina) are most sensitive to greenish-blue light.All Continental flatwork ironer offer easy-to-operate controls that provide efficient performance and flexibility. And since there are more rods in the outer edge of the retina,How are led corn light products different from other lighting, like fluorescent or incandescent? blue lights appear brighter in our peripheral vision in low-light conditions. That's why a tiny blue LED can be so distracting in a dark room,These solar street lamps can, apparently, operate entirely off the grid. even if it's in your peripheral vision. 

But beyond being a distraction, blue lights are known to affect our circadian rhythm and sleep patterns. Exposure to blue light suppresses the production of melatonin. Melatonin is known as the “sleep hormone” and is produced by the pineal gland, a pea-sized gland in the middle of your brain. You sleep when melatonin levels are high and awaken when melatonin drops. 

Even a very low level of blue light, such as that produced by a single bright LED, can suppress melatonin levels, leading to wakefulness. This means anything with a blue LED in your bedroom has the potential of disrupting your sleep cycle. This can be the tiny blue light on your phone charger, the power button of your laptop, or accessories such as speaker lights. New solar panel cells is now six and twelve times brighter than standard solar lighting. If this is the case, try unplugging the device, removing it to another room, or covering the LED so you can't see the light. You may sleep better for it. 

"The home assistance program builds on our commitment to our customers and the communities we serve,Buy hid kit, ballasts, and headlight bulbs." said Jim Hogan, president and CEO of Entegrus Inc. "It provides free energy efficient upgrades to those who need it most, ensuring their homes are as comfortable and cost effective as possible." 

Hogan said energy-saving light bulbs, low-flow showerheads and ENERGY Star appliances are just some of the products available free of charge to income-eligible Entegrus customers who want to make their homes more energy efficient. 

He said conservation is a key part of Ontario's plan to build a clean, modern and reliable electricity system and clean up the air for many generations to come. The Downtown Chatham Centre is converting all of its lighting into ultra high-efficiency LED lights over the next year. Click on their website www.indoorlite.com for more information.