Different aspect ratios of the projection screen

HDTV (ie 16:9) HDTV is the abbreviation of High Definition Television, translated into Chinese means 'high-definition televisionIt uses digital signals, and HDTV technology belongs to the highest standard of DTV, with the best video and audio effects. WXGA (ie 16:10) WXGA: Full name Wide Extended Graphics Array, which widens the notebook screen according to the 16:10 ratio, which is suitable for the aspect ratio of DVD movies, so there will be no image distortion or no image on both sides when watching DVD For display issues, this kind of screen supports 15.4-inch screens with 1280×800 and 1680×1050 pixels. Most wide-screen notebooks now use this screen. WXGA (1280*800/1280*768 pixels) WXGA is currently the most mainstream widescreen notebook application 'specification. For notebooks, the resolution of 1280*800 can get a good display effect no matter whether it is applied to 12-inch or 15-inch products. In addition, the WXGA screen has the relatively lowest cost, which has further contributed to its unification of mainstream notebooks. Pattern. CINEMASCOPE (that is, 2.35:1) In 1923, French physicist Henri Jacques Chretien developed an anamorphic lens that can deform the image horizontally and widen the image. This is the CinemaScope widescreen technology, this kind of lens that can produce special effects, laid the technical foundation for the birth of widescreen movies. In 1952, the 20th Century Fox Company in the United States first realized the importance of this lens, so it purchased the patent and applied this technology to film shooting. In shooting, a special anamorphic lens is used to compress the 2.35:1 panoramic picture onto the 1.33:1 35mm film. When the filmed film is shown, an anamorphic lens is also added to reversely deform the picture to restore the picture. This is the basic method of wide-screen film production and projection. In 1953, Fox used this technology to shoot the first wide-screen movie The Robe, which was a huge success, so that theaters began to install new wide-screen anamorphic lenses on their projectors. Within a year, all major studios adopted CinemaScope technology and its 4-channel stereo. By 1957, 85% of theaters in the United States had installed CinemaScope technology. There were other widescreen formats during this period, many of which used 70mm film to improve image quality. Although more than 900 screens are currently equipped with 70mm film projection equipment, this format is rarely used. Some unique people still use this format mainly for sound. In 1997, James Cameron's 'Titanic' was the last 70mm film released by the major studios, but the shooting was still 35mm film, only 70mm was used for distribution. Widescreen movies expand people's field of vision, so they are especially suitable for expressing magnificent movie scenes. Nowadays, widescreen movies have been widely adopted in countries all over the world.