How do 3D glasses work? What is the principle of 3D glasses?

3D glasses need to be used with 3D movies, and it is useless to watch ordinary movies.

First of all, light can be polarized, and the treated light has a polarization direction (the direction of the light itself is constant), but we still look like the original light.

Then there is a kind of lens, called polarized lens, which also has a polarization direction, and light with the same polarization direction can pass through, and different lights can't.

When shooting a 3D movie, two cameras are shot together at different angles (almost the angle at which the eyes are separated), and the two sets of images are processed in different polarization directions and projected onto the screen.

If you don't have 3D glasses at this time, you will look like two sets of images blurred together. If you wear 3D glasses, because of the filtering of polarized lenses, the left and right eyes see different images, just like when we see real objects with glasses. The brain generates three-dimensional sensations based on calculations.

Stereoscopic cinema uses two images for projection, and all 3D cinema technology is based on the principle of parallax of the human eye, allowing both eyes to see one of the two images overlapping on the screen through the glasses device.

One lens has a transverse slit (filtering out vertical waves, only through transverse waves), and one lens has a vertical slit (filtering out transverse waves, only through vertical waves), when the two eyes see light waves in different directions, the visual effect is three-dimensional.

3D glasses are stereoscopic glasses, which use the polarization of light to create stereoscopic vision, wearing 3D glasses, you will see three-dimensional movies, three-dimensional world.

3D glasses adopt the advanced "time division method", through the 3D glasses and the display synchronization signal to achieve, when the display outputs the left eye image, the left spectacle lens is the light transmission state, the right spectacle lens is opaque, and when the display outputs the right eye image, the right spectacle lens is transmitted, and the left spectacle lens is opaque, so that the two eyes see different game screens, to achieve the purpose of deceiving the eyes.

By switching between the two eyes in this way, the two eyes are given a nuanced image, which is calculated by the brain to produce a 3D stereoscopic image. 3D glasses are designed with sophisticated optics that allow for double the resolution of each eye and a wide viewing angle compared to passive glasses.

Three different principles of D glasses

1. Embossed 3D glasses are funny

These glasses use special red cyan lenses to process the image. These lenses produce the images we see by filtering the layered images that are actually viewed. While one lens filters out all the red in the image, the other filters out the cyan, leaving your brain in 3D.

The image you're looking at is usually the same image projected from two different angles, or two completely different overlay images. Thanks to the filtering, the colors you perceive will eventually be chromatically different from the real image.

2. The working principle of polarized light rental and sale of 3D glasses

Two images on the same screen are superimposed by an orthogonal polarization filter. The two glasses are superimposed with corresponding orthogonal polarizers to filter the projected image. Each lens selects a polarization direction of light, and each eye sees two separate images on the screen. The rest is left to the brain.

This method is popular because of its low cost, and 3D Max generally uses this method. However, due to the choice of polarized light, more than half of the luminous flux is lost. Therefore, there are high requirements for the initial brightness of the display device.

3. The working principle of shutter 3D glasses

Shutter glasses are considered to be the most advanced 3D glasses available today. The other two types of 3D glasses use passive 3D, while shutter glasses use active 3D. They don't use filtered images or colors to create a three-dimensional effect.

Instead, shutter glasses work through LCD screen technology, which darkens each lens, alternating left and right.

This is actually modulating the continuous propagation of the light that your eyes see, by dividing the image into two frames to form two sets of pictures corresponding to the left and right eyes, in the high-frequency switching, let your left and right eyes get different images, and finally your brain will actively combine these images to form a 3D impression.

The principle of 3D glasses is to use human stereoscopic vision to create a three-dimensional image of both eyes.

When the human eye sees things, the angle difference will be formed, and 3D glasses are made by using the three-dimensional principle of angle difference, so as to create a two-dimensional spatial visual image technology, and then 3D glasses can use polarized light to achieve the effect of plane to three-dimensional.

3D glasses are a kind of equipment worn when watching movies in the air, with the help of 3D glasses, we can enjoy three-dimensional and realistic 3D movie pictures. 3D glasses, also known as stereoscopic glasses, are a special type of glasses that can be used to look at 3D images or images, and there are many types of colors, the common ones are red, blue and red blue.

Precautions for wearing.

1. Do not touch the frame and LCD lens, when holding the glasses, just hold the temples, do not break the temples to avoid damage. The lenses cannot be wiped with any paper towels or towels, if you feel that the lenses are not clean enough, contact the staff and the staff will be there for you.

2. If you are wearing glasses, please take off your glasses and wear them. If not, please hold the temples with both hands during the movie, wear the 3D glasses gently, and keep the glasses at a certain distance to avoid scratching each other.

3. After watching the movie, please leave the venue in turn, and cooperate with the staff to check the quality of the 3D glasses. Please use and keep the 3D glasses properly during the whole viewing process, and if there is any damage or loss, you must compensate according to the price.