Do I need to wear 3D glasses for digital 3D movies?

Required.

You need to wear glasses to watch 3D movies.

1. Because 3D movies use a stereoscopic visual display system, the reproduced picture will display the left and right eye plane projection images in three dimensions, allowing the audience to have a three-dimensional depth of the image. You need to wear suitable 3D glasses when viewing.

2. Technically, two cameras are usually used to shoot images simultaneously to obtain a three-dimensional sense of the left and right sides of the subject. When watching, the viewer's visual cortex automatically combines the images into a single three-dimensional image. Modern computer technology has made it possible to produce three-dimensional movies using CGI computer special effects instead of traditional dual-camera "shooting".

3. If you are a short-sighted viewer, you also need to wear myopia glasses to see clearly when watching 3D movies. If the myopia is not too deep, you can choose to watch from the front row seat; if the myopia is a bit deep, you can wear myopia glasses first and then 3D glasses; if you feel that two layers of glasses reduce your comfort, you can also choose contact lenses. At present, some cinemas provide 3D movie clips, which can clip 3D lenses to the glasses frame, which is more convenient and easy to operate.

4. Overlay the two images to produce a three-dimensional effect. When the audience wears stereoscopic glasses to watch, they will have an immersive feeling. Also known as "3D stereoscopic movie".

A stereoscopic movie is a movie that uses the viewing angle difference and convergence function of human eyes to produce a three-dimensional effect. Appeared in 1922. When this kind of movie is shown, two pictures overlap on the screen. Through the audience's special glasses or the radial semi-conical lens grating in front of the screen, the left eye of the audience sees the picture taken from the left perspective, and the right eye sees the picture taken from the right perspective. , through the convergence function of the two eyes, it is synthesized into a stereoscopic visual image.

Stereoscopic film uses a shooting device with two lenses like the human eye to capture dual-viewpoint images of the scene. Then two projectors are used to simultaneously project the images from the two viewpoints, so that the two slightly different images are displayed on the screen. At this time, if you watch it directly with your eyes, the images you see will be overlapping and somewhat blurry. To see a three-dimensional image, measures must be taken so that the left eye only sees the left image and the right eye only sees the right image. For example, if a polarizing film with opposite directions is installed in front of each projector, its effect is equivalent to Polarizer. After the light emitted from the projector passes through the polarizer, it becomes polarized light. The polarization directions of the polarizers in front of the two projectors are perpendicular to each other, so the polarization directions of the two polarized lights generated are also perpendicular to each other. A beam of polarized light is projected onto the screen and then reflected to the audience. The direction of the polarized light does not change. The audience uses polarized glasses corresponding to the above-mentioned polarized light to watch. That is, the left eye can only see the picture reflected by the left camera, and the right eye can only see the picture reflected by the left camera. Go to the picture reflected by the right camera, and you will see a three-dimensional scene. This is the principle of three-dimensional movies. Complementary colors, switches, cylindrical lenses, slit gratings, etc. are all different ways of viewing three-dimensional screens based on the basic principle of ensuring that the left eye sees the left image and the right eye sees the right image. As technology advances, people will have more ways to view stereoscopic images on screens.