Do Projectors Emit Blue Light? How To Keep You Eyes Safe
Choosing a projector might take a lot of time but choosing the right projector by thinking of your health is a bit tricky but more important task. Projectors can cause serious eye health issues. They emit blue light that sometimes causes blue light eye strain.
It may seem cool to look directly into the blue light of the projector but it is extremely harmful to your retina. This happens due to blue light of a short wavelength that enters your eyes and retina indirectly.
Do Projectors Emit Blue Light?
Yes. Though projectors emit blue light but not like the TV. Light usually reflects from where the image forms or content becomes visible. That blue light doesn’t enter into your eyes directly to cause eye strain but if that light somehow enters your eye, it can create several problems.
In this article, we will be sharing a detailed understanding of the importance of keeping blue light off for safety with reference to projectors.
Understanding Blue Light
The blue light of a projector is actually a part of the visible spectrum. This is the light that can be seen by humans easily. Blue light has a short wavelength but high energy. It typically ranges from 380 to 500 nanometers in vibrations.
Sources Of Blue Light:
It is believed that a particular percentage of entire visible light is blue light. But naturally, the main source of blue light is sunlight. While these electronics that emit blue light are typically an artificial source of blue light.
Gadgets That Release Blue Light:
Several electronic gadgets emit blue light including smartphones, fluorescent light, computer monitors, LED TVs, Tablet screens as well as compact fluorescent light bulbs.
Blue Light Emitted By Projectors
It is important to understand that projectors emit blue light and you have to make sure to avoid any direct eye contact with that blue light. The light by projector usually reflects in a direction of the visibility of content. This is the reason that blue light doesn’t make direct contact with your eyes.
This is one of the safe ways and there will be no possibility of damage to your eyes. The blue light of a projector will only affect you if you look directly into the lens. If it happens the damage will be due to the projector’s blue light.
Checkout our guide about the best UST Projector
The Harms Of Blue Light
The blue light emitted from screens disrupts the natural production of melatonin by your body and also sends a message to your brain to stay awake. If it is for one or two hours then it is normal but if you count the total hours in a day you spend on the screen, it will be a massive amount of time and damage to your eyes.
You may also have the idea of sleep deprivation, that how it is common and the consequences it creates such as weight gain, high risk of mortality, and how it makes you dull during the whole day if you have not slept properly.
Most people ignore to notice the number of hours they are using their screens and do not bother to estimate the damage it is causing to their health. They spent more than 10 hours on screen by being unaware of the damage happening to their eyes.
How Can Blue Light Damage Eyes?
There are a number of sources through which blue light comes such as television, high-intensity lamps, computers, and projectors. It also comes from the sun.
If a person remains exposed to that blue light for a longer period of time, the damage happened to the eye’s health will be irreversible. Even by staying in front of a screen for a few hours without using any kind of eye protection, eye fatigue and dryness in the eyes is the most common thing we all experience.
In some severe cases, this has also led to cataracts as well as age-related macular degeneration.
In human eyes, there are two types of light-sensitive cells. To the one, we call rods and the other is cones.
The rod’s cells help to detect blue, green, and red light while without rods there will be no color visible to the human eye. It will be only able to detect black and white images.
Cones are very important for color vision and it is stated that by birth there are almost 30 million cones available in the human eye and this number decreases with older age. At the age of 60, there are almost 10 million cones left.
This loss of light-sensitive cells is a natural phenomenon but with the continuous exposure to blue light, this process enhances up to five times faster than the natural process.
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How To Keep Your Eyes Safe From Damage By Blue Light From Projectors?
Almost all digital appliances emit a huge amount of blue light and we all get exposed to it directly or indirectly. It also comes through the sun and with enormous exposure, it enhances the risk of sleep deprivation and also causes severe kinds of mood swings.
Though you can’t get rid of these blue lights due to modern technology you can try some ways to reduce the exposure to blue light even through projectors. Such as:
- install apps like flux that reduce the amount of blue in your display (make sure to turn it off during daytime hours)
- dim the screen as low as possible
- do not use electronics after sunset
- get an anti-glare filter for your screen, or wear glasses with amber lenses before bedtime.
The blue wavelength is also known as high-energy visible light. Red and green are also high-energy visible lights. Blue light has the ability to cause more damage to the eyes as compared to other wavelengths of light.
Checkout our guide about projector vs monitor
Safety Precautions When Looking At Projectors
There are the following important tips you can try to keep yourself safe from damage caused by blue light emitted by a projector or any other appliance.
Do not look into the projector lens:
The best way to keep your eyes protected is to avoid directly looking into the lens of the projector that emits blue light. Staring directly into the lens when it is turned on is completely damaging.
There is a heavy beam of blue light emits through the lens that can cause projector eye damage. Whenever you’ll look directly into the lens your eyes will suffer. Not only the eyes but the other parts of your body and your health will also suffer heavily because of it.
Also do not look into the blue light of a laser projector. It doesn’t matter how weak the laser projector has a light but never look into the blue light-emitting by the lens.
Checkout our guide about how to clean the projector lens
Wear Protective Glasses:
Always use protective eye gears whenever you get in front of a projector or any other electronic screen. Avoid opening up a projector right into your face and eyes directly.
It will keep your retina safe from any damage.
Turn off Projector before opening-up:
Never operate an open projector if you don’t want to get eye burns or momentarily colorblindness. Always turn off the projector before opening its panel. Also, maintain the distance between the screen and the projector.
Correct Accessories:
It is important to bring all the accessories to the right place before using a projector. For this purpose, get proper mounts and a good screen. Then keep the distance in check for better visibility and also to ensure that no one will be exposed to the blue light.
Never sit too close to the projector or screen. Always keep a distance for safety measures.
Projector Blue Light versus TV Blue Light
The blue light produced by TVs is way more dangerous as compared to the blue light emitted by the projector. While the projectors emit blue light indirectly and you will be exposed to it only if you look directly into the lens of the projector.
If we compare TV and projector while considering the safety measures, projectors are safer than TVs.
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