Projector
Encyclopedia
Projector may refer to:
- Image projectorImage projectorAn image projector is an optical device that projects an image onto a surface, commonly a projection screen.Most projectors creates an image by shining a light through a small transparent image, but some newer types of projectors can project the image directly, by using lasers...
, a device that projects an image on a surface- Video projectorVideo projectorA video projector is an image projector that receives a video signal and projects the corresponding image on a projection screen using a lens system. All video projectors use a very bright light to project the image, and most modern ones can correct any curves, blurriness, and other...
, a device that projects a video signal from computer, home theater system etc. - Movie projectorMovie projectorA movie projector is an opto-mechanical device for displaying moving pictures by projecting them on a projection screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras.-Physiology:...
, a device that projects moving pictures from a filmstrip - Slide projectorSlide projectorA slide projector is an opto-mechanical device to view photographic slides. Slide projectors were common in the 1950s to the 1970s as a form of entertainment; family members and friends would gather to view slide shows...
, a device that projects a still image with a transparent base - Overhead projectorOverhead projectorAn overhead projector is a variant of slide projector that is used to display images to an audience.-Mechanism:An overhead projector typically consists of a large box containing a very bright lamp and a fan to cool it. On top of the box is a large fresnel lens that collimates the light...
, a device that projects a transparent image - Opaque projectorOpaque projectorThe opaque projector, epidioscope, epidiascope or episcope is a device which displays opaque materials by shining a bright lamp onto the object from above. A system of mirrors, prisms and/or imaging lenses is used to focus an image of the material onto a viewing screen...
, a predecessor to the overhead projector - Magic lantern (projector), a historic projection device
- Camera obscuraCamera obscuraThe camera obscura is an optical device that projects an image of its surroundings on a screen. It is used in drawing and for entertainment, and was one of the inventions that led to photography. The device consists of a box or room with a hole in one side...
, the historic ancestor to projection devices - EnlargerEnlargerAn enlarger is a specialized transparency projector used to produce photographic prints from film or glass negatives using the gelatin silver process, or from transparencies.-Construction:...
, a device used to produce photographic prints from negatives
- Video projector
- Ceiling projectorCeiling projectorThe ceiling projector or cloud searchlight is used to measure the height of the base of clouds above the ground. It is used in conjunction with an alidade, usually positioned 1000 ft away and wherever possible set at the same level.The projector is normally set at 90°, although 71° 31' may be...
, a device used to measure the height of clouds - Projection (linear algebra)Projection (linear algebra)In linear algebra and functional analysis, a projection is a linear transformation P from a vector space to itself such that P2 = P. It leaves its image unchanged....
, a linear transformation of a vector space - Projector (album)Projector (album)-Release history:-Dark Tranquillity:* Mikael Stanne − vocals, lyrics* Niklas Sundin − lead guitar; layout design, cover art, image editing* Fredrik Johansson - rhythm guitar* Martin Henriksson − bass guitar* Anders Jivarp − drums-Guests:...
, an album by Dark Tranquillity - A type of mortar (weapon)Mortar (weapon)A mortar is an indirect fire weapon that fires explosive projectiles known as bombs at low velocities, short ranges, and high-arcing ballistic trajectories. It is typically muzzle-loading and has a barrel length less than 15 times its caliber....
- A version control system used in the Macintosh Programmer's WorkshopMacintosh Programmer's WorkshopMacintosh Programmer's Workshop or MPW, is a software development environment for the Classic Mac OS, written by Apple Computer. For Macintosh developers, it was one of the primary tools for building applications for System 7.x and Mac OS 8.x and 9.x. Initially, MPW was sold as a commercial product...
- As a synonym for promoterCorporate promoterA corporate promoter is a person who solicits people to invest money into a corporation, usually when it is being formed. An investment banker, an underwriter, or a stock promoter may, wholly or in part, perform the role of a promoter...
, e.g. in the phrase "railway projectors" - Projector (patent)Projector (patent)Projector is a 19th century term in United States patent law meaning the original true inventor. “True inventor” at the time meant the first inventor to reduce an invention to practice....
is an archaic term in US patent law meaning original inventor to reduce an invention to practice.