Anaglyph glasses are used to view 3D images and are typically considered a passive type of technology since they don’t create the 3D image. You have probably seen these in many theaters as those red and blue glasses that help you see movies in 3D, but all they really do is help your brain combine the anaglyph image so that it looks like it’s popping out at you. Here are a few interesting things you probably don’t know about anaglyph glasses.
If you’re looking to save a little money or just have a project to work on, then you can easily make these glasses by yourself. You just need some colored glass or plastic that is red and cyan, frames made from cardboard or old glasses to put the lenses in and a 3D movie to make the magic happen. While the results may be a little mixed if the colors aren’t right, you can often get a good color balance and save some money.
Active and Passive
There are two types of 3D glasses: active and passive. Active glasses take the images from the screen and make them 3D. This produces the best effect and makes everything look realistic while also preserving the original color. The problem with this technology is that it’s quite expensive, heavy and it can get very hot since batteries are required.
Passive technology uses the anaglyph glasses to combine the red and cyan images to produce a 3D effect. While there are sometimes problems with the color, this is a much more affordable technology and it doesn’t have the problems associated with active technology.
Anaglyph glasses are best known for having red and blue lenses, but there are nine different color combinations that have been found to be just as good if not better than red and blue. For example, amber and dark blue gives you almost full color perception. There’s also green and magenta which is similar to red and blue, but it balances colors a little better and makes green much easier to see.
You have probably seen molecules and protein structures in science books that have incredible graphics and amazing detail, but this isn’t enough for scientists. Most of these images have to remove geometrical structures to make the image 2D, but there are now many programs that produce anaglyph images so that scientists can see the full image with the appropriate glasses.
The technology might seem archaic since it just involves two colored lenses, but anaglyph glasses are able to do numerous wonderful things. From making movies look incredibly realistic to scientific applications, these humble glasses have made remarkable changes in many different industries.