What Is A Projection Lens?
Projection lenses are ones designed to transfer images from film or a transparency sheet to a screen using a substantial amount of energy (artificial light) in the process. Projection lenses are concave, or inward curving lenses. This type of lens projects light rays great distances. While there are different types of projectors, and more coming out all the time, they all use a lens to break down and transmit images through light rays. The lens includes a optical mirror, which must lay completely flat within the lens, and has a highly reflective surface to help throw, or project light waves. Despite its name, this mirror bears no resemblance to what hangs or a bathroom wall or is used in a compact.
Projection lens mirrors are either made of coated glass or foil attached to a metal frame. Lenses with glass mirrors offer a better quality image, but these mirrors are also harder to clean and adjust and scratch very easily. Glass lens mirrors also mean a more expensive projection lens. The best projection lenses are easily adjustable in terms of size and angles for viewing purposes. Many of the latest models adjust image brightness in response to ambient light levels within the viewing area. Many Projection lenses are designed to work with specific projector models.
Who Makes Projection Lenses?
This type of lens is designed and produced by optical manufacturing companies. While these companies have patented basic designs, these lenses can be customized by the manufacturer for clients. Such specified customizations include anti-"ghosting" safeguards, resolution, and color registration. Such manufacturers design projection lenses for projectors using a partial dome, full field viewing, and front and rear screen projection use. Many of the lenses these companies design are not just used for movie or video projectors, but for displays and shows a planetariums, IMAX theaters, and airport and highway construction displays.
Projection lens mirrors are either made of coated glass or foil attached to a metal frame. Lenses with glass mirrors offer a better quality image, but these mirrors are also harder to clean and adjust and scratch very easily. Glass lens mirrors also mean a more expensive projection lens. The best projection lenses are easily adjustable in terms of size and angles for viewing purposes. Many of the latest models adjust image brightness in response to ambient light levels within the viewing area. Many Projection lenses are designed to work with specific projector models.
Who Makes Projection Lenses?
This type of lens is designed and produced by optical manufacturing companies. While these companies have patented basic designs, these lenses can be customized by the manufacturer for clients. Such specified customizations include anti-"ghosting" safeguards, resolution, and color registration. Such manufacturers design projection lenses for projectors using a partial dome, full field viewing, and front and rear screen projection use. Many of the lenses these companies design are not just used for movie or video projectors, but for displays and shows a planetariums, IMAX theaters, and airport and highway construction displays.