Technology has made more and more people suffer from eye problems. That is because we can find devices with screens of all sizes that emit a light that could damage our eyes if we constantly look at it. Within this group of devices, we can include smartphones, TVs, and projectors. In this article, we will talk about the latter and their impact on our eyes.
Many people use technology for entertainment. Some prefer to watch TV, movies, or series, while others just like to play video games. The projector is a very versatile tool that allows us to do all of the above. It is a device capable of receiving a video signal to project images thanks to a lens system.
It should be noted that these devices are not only used for recreational purposes but also commercial ones. That is because they are tools that allow you to view different types of high-quality, high-resolution content on different screen sizes and anywhere, providing an excellent user experience.
We have to bear in mind that many users decide to buy projectors to be able to watch their movies and series on a larger screen. That is because a TV can be more expensive than a projector.
The advantages of this device are its adaptability to different screen sizes, its price, and its easy installation anywhere. However, before buying this type of device, many people wonder if they are better for their eyes.
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Are Projectors Better for Your Eyes?
An interesting percentage of the world’s population suffers from eye problems. It is true that some of these problems may be due to disease, but many others are due to the little care we have for ourselves. Therefore, we have to learn not only to manage our time in front of a screen but also to choose the right device that causes less damage to our eyes.
If you want to take care of your vision, the choice between a projector or a TV is extremely important. Each one has its advantages and disadvantages, so we must know them to make the best decision.
We have to bear in mind that a TV has advantages over a projector in terms of resolution, brightness, sharpness, etc. However, projectors do less damage to our eyes. That is because these devices allow us to project images in large screen sizes, preventing us from straining our vision. Another important aspect is that, unlike TVs, projectors do not emit light but reflect it, so it is usually more pleasant for the eyes.
The first thing to know is that our eyes are constantly exposed to blue light. Some sources of emission of this type of light are the sun and the mobile devices we use every day.
Blue light is a part of the spectrum of visible light (sunlight), which is made up of other colors such as red, orange, yellow, and green. Each of these different colored rays has a different wavelength. When a light ray has a relatively long wavelength, its energy will generally be lower, so it will not be harmful to our eyes. However, when a light ray has a short wavelength, its power will be higher and cause eye problems.
Ultraviolet rays have very short wavelengths. For example, blue light is close to ultraviolet light in the visible spectrum. Therefore, its wavelength is short, and its effects will be negative for our eyes.
Both projectors and TVs produce blue light. We have to bear in mind that projectors have an advantage since their blue light is indirect. That means it reflects off the surface or screen. The opposite occurs in televisions since they emit said light directly, being more harmful to our eyes.
In televisions, the blue light becomes more powerful when we are watching a movie or series at night with the lights in the room are off.
What Can We Do to Reduce Exposure to Blue Light?
Unless you want to wear sunglasses to protect your eyes while watching a movie or series, which can be uncommon and uncomfortable, the best way to protect your eyes from blue light is by reducing the time you watch the screen.
Regardless of whether you have a TV or projector, you should avoid spending a lot of time in front of the screen. Instead, find another form of entertainment such as going to the park, socializing, exploring nature, going to a restaurant, etc.
Emitted Light vs. Reflected Light
Every year, television manufacturers try to improve the quality and clarity of the images produced by their devices. Today, TVs have a much more powerful brightness than those of previous years. Although increasing brightness is a considerable improvement in image quality, there is a limit to the amount of brightness our eyes can handle.
Unlike TVs, projector screens do not emit light directly. The projector bulb directly emits light which is reflected onto the screen or surface. In this way, your eyes will not receive the light from the projector directly, thus reducing the levels of stress and tension on the optic nerve. In addition to that, the large screens that you can use in projectors make your eyes less strained.
Is the Light from the Projector Bulb Dangerous for Our Eyes?
Of course! We have discussed that what really causes eye problems is the direct light emitted by the device. TVs emit light directly from the screen while projectors reflect it.
The reflected light from the projector results from the bulb, responsible for emitting the light directly.
The light from a bulb is dangerous when we stare at it. Most projectors have a light source of approximately 6 kilowatts which can be very harmful to the human eye. In extreme cases, it could cause serious eye damage and even blind the person.
The direct light from a TV can be more dangerous to our eyes than the indirect one from a projector. Even so, we must take the necessary safety precautions to prevent direct light from the projector lamp from affecting our eyes.