Projectors do emit some blue light and can be a bit of a problem for movie viewing.The emitted blue light may not seem strong, but due to shorter wavelength, they hold a lot of prowess.
This may be a hazard to our eyes and may cause eye damage.
A projector has a bigger screen size compared to a regular TV. It also has better definition, and most importantly, it does not emit any harmful radiation.
A projector is just like the old overhead projector that uses light to deliver the images to a flat surface to visualize these images.
What Is Blue Light ?
Blue light is a part of the visible light spectrum. Blue light is between violet and green on the visible color spectrum. The blue color is due to its higher frequency, and hence greater energy.
Blue light is produced naturally by the sun and emitted from the blue sky. It can be helpful for humans as it stimulates wakefulness and helps us read. It is the main color of light in the daytime.
Blue light has a shorter wavelength than green and red light. When all three are mixed together, white light is produced.
Blue Light is something that many people are familiar with, but is something that many people do not fully understand. Some people might think it is just blue light, but there is a form of light that is unique.
That light is blue light and it is used in a number of different things. The light is a type of light that is used in projectors, as well as many other devices.
How Does Blue Light Damage Your Eyes?
Blue light is a wavelength of light found in natural sunlight and artificially from things that emit light such as light bulbs, computer screens, and TVs.
Although most of the wavelengths in blue light are safe for your eyes, high-energy blue-violet light in the 415-455nm band is more damaging to the eyes, especially the lens and retina.
This range of blue light falls under UV intensity, which is widely known to be harmful to the human body if overexposed.
Sadly, wearing UV blocking sunglasses would not be ideal when trying to watch your favorite movie or show.
Blue light is dangerous to the eyes because of its short wavelength that allows it to directly access and burn through your eye lens and retina.
It’s like the concentrated beam of sunlight focused by a magnifying glass that kids use to burn paper or insects.
The color blue might seem nice and cool to look at but it might as well be a high-powered laser to your retina and eye lens when looked at directly as a wavelength of light or at the very least certain blue hues in light are deadliest to your vision health. Both projectors and TVs have blue light on them.
How Can Blue Light Damage Your Eyes?
Ultraviolet light or rays the same rays known to cause skin cancer, damage DNA, bleach clothes, cause blindness, and produce various other destructive results are connected to blue light from the sun and from your electronic viewing devices.
The 415-455nm band of blue light falls under ultraviolet intensity: The same UV rays that can cause various eye conditions as well as skin diseases.
UV anything is known to be harmful to the human body as well as anything else, including your car paint and outdoor furniture.
It’s one of the reasons for sunburns and why when you’re at the beach, you put in UV-blocking sunglasses and cream.
So when your eye is directly exposed to the light, due to the high intensity, it will pass through the top layer and hit right into your retina, causing pain and sometimes severe damage.
Prolonged exposure to blue light will also lead to eyestrain, fatigue, pain, and dry eye. Cumulatively these issues can cause damage to the retina cell, which causes degradation in vision.
Can A Projector Light Damage or Harm Your Eyes?
Projector light can harm your eyes but only when it falls directly into your eye. Otherwise, the reflective does not affect your so the chances of any damage.
If a projector is used in the way it is intended and it is used adequately with its accessories like screen, then there is no chance that anyone will face eye damage.
It is a general concern that circles every first timer’s mind who are about to buy a projector for home entertainment, primarily when it is used around children.
Most of the projectors, including professional ones, give out a lot of IR and UV light during projection, so if someone without a rational mind looks directly into them, then it would affect.
Adults need to take care of kids and prevent them from looking directly into the lens as kids are unaware of the side effects.
The light source of most of the projector’s stays around 6Kw, which is entirely unsuitable for human’s eye. You should remember a certain glance won’t damage, but a prolonged stare would definitely cause issues.
Moreover, if there is a difference in contrast, then it will not only cause discomfort but will also affect the eye to a certain extent.
Projector lights are almost filtered when they reach the screen, and they turn into visible light, so when you look at the screen, you won’t get any strain.
When you use an excellent display screen proper setup , then there is a minimal chance that striking light would damage your retina.
This fact is also applicable for kids because your kids will be already habituated to the blink reflex to abnormal bright lights.
Moreover, the laser light capacity used in projectors is below 5mW, so it doesn’t have any ability to do any harm the health of your eye. However, looking directly for some time might cause passing blindness, and you will gain vision within seconds.
Safety Precautions When Using Projectors
- Prevent your kid and anyone to stare directly into the lens as it emits a large amount of light from the small area.
- Remember opening up the projector foolishly while it is working without proper eye gear can temporarily or permanently damage your retina.
- As the light is not filtered and there is always leakage of UV rays, it can cause eye burn followed by momentary blindness. So switch off the projector before commence on opening up the panels.
- Always use proper accessories like appropriate screens, good mounts , and other components to minimize any chance of exposure.Avoid sitting to close to the projector and maintain a preferable distance from it.
- It is always better to mount it in the ceiling or at a place so it can prevent maximum eye contact.
- While providing a presentation, maintain a distance from the light as it will prevent your eyes from getting affected by the harmful rays.
- You should follow 20-20-20 rules for eyes when you are playing games watching movies on a projector for a long time. Not only for the projector, but it is also useful if you are seeing any kind of electronics devices for a long period of time.