When most people think that 3D movies are an invention of the last 40 or 50 years, you may be shocked to learn that the first 3D movie was released in 1922. Since then, 3D technology has been in and out of the mainstream every two years. The biggest breakthrough in 3D success was made by James Cameron’s Avatar. As the 21st century grows in popularity, 3D technology seems to be here to stay, with almost every movie available in both theaters, both digital and 3D.
You may have seen 3D in theaters and 3D on your home screen, but do you know how 3D glasses work? There are some types of 3D glasses that work together with a project to provide you with an impressive visual display.
Generally, there are three types of 3D glasses, including anaglyph, polarized and shutter. They each use different methods to bring flat images to life.
Here is the iconic image that many think of as the most popular types of 3D glasses and how 3D glasses work. These glasses use special red / cyan lenses to see the image. Lenses like these create the images you see by filtering the layer image you actually see. When one lens filters out all the red in the image, the other lens filters the cyan, which allows your brain to see the 3D image. The image you see is usually the same image viewed at two different angles – or two completely superimposed images.
Anaglyph glasses come in several variants in the red / blue category, including:
- Magenta / green
- Red / Green
- Red / Cyan
How 3D mirrors work when it comes to polarized lenses depends on how well the eyes are deceiving, like anaglyph glass.
Why do polarized 3D glasses work? They control the light that reaches your eyes, but instead of controlling the colors of light as red and blue, they have a yellowish-brown color.
The image on the screen also has a role. In addition to the polarization of the lens, the projected image is actually two images superimposed on the same screen via an orthogonal polarization filter. So glasses, with the same filter, allow each eye to see two images on the screen.
In fact, these glasses are the perfect choice for IMAX 3D movies, and they are the gray lenses you usually get in theater today.
Why do shutter 3D glasses work?
Shutter glasses are considered the most advanced form of 3D glasses available today. The other two styles of 3D glasses use anything called passive 3D, while shutter glasses use active 3D glasses. They do not use filtered image or color to create a three-dimensional effect. Instead, the shutter mirrors work with LCD screen technology, which darkens each lens, alternating between left and right. Lens blackout occurs so quickly that if you do not pay attention, you will not notice the effect.
Shutter glasses are usually battery-powered, or USB-supported, and more expensive than regular 3D glasses. The price of these glasses makes a big difference to the image quality. You can buy shutter glasses from Samsung, Panasonic, Sony and more.
Why do 3D glasses work?
How 3D glasses work depends on how your eyes work and how they interact with your brain. The human eye has vision, which works best when you use both eyes at once. Visionary vision gives you the depth of vision and helps you see which objects are closer or farther away from your vision.
Binocular vision to present the same object at two different angles depends on the space between your eyes. Typically, the space between your eyes is about two inches apart, and the images that each eye shows help you create the full image.
How do 3D glasses work for binocular vision?
Both types of 3D glasses work by allowing each eye to see two different things. When one eye sees a red image and the other a blue light, or a lens that transfers darkness and light, the eyes see a variety of objects that deceive the brain to look in a dazzling 3D.
Now that you know a little more about how 3D glasses work, we hope you enjoy using them more.