Browse Definitions :
Definition

video projector

A video projector is an electronic device that takes input audio/visual signals and outputs video onto any flat surface, which is most often a white or silver colored projector screen. Video projectors make it possible to create large images without needing a similarly-sized electronic display. They are often used for larger audiences such as theaters, conferences and presentations.

A video projector uses a video source input played internally on a small screen. Light is shone through the screen, then captured and focused by a lens or multiple lenses to display on a surface at a given distance. Most projectors today are digital projectors. Technologies commonly used in video projectors include Digital Light Projection (DLP), Liquid Crystal Display (LCD) and liquid crystal on silicon (LCoS). Video projectors can use different light sources like high-pressure mercury lamps, light emitting diode (LED), laser diode and Hybrid LED/laser diode systems.

Consumers look for a range of features depending on how the video projector will be used. These include brightness, contrast, resolution, color quality and focal depth.  If a room is small, a video projector with a short focal depth, also known as a short throw, may be required. If a projector is to be used in a brightly lit environment, then brightness and contrast values are vital. When image quality is important, such as for presentations or entertainment, high resolution and good color quality is a requirement. High resolution can also help prevent viewers from perceiving the space between pixels, also known as the screen door effect.

A less common use of video projectors is in augmented reality headsets and heads-up displays (HUD). In some HUD and augmented reality headsets like Google Glass or Microsoft Hololens, the image a person sees appears to have a greater distance from the eye due to the use of tiny video projectors and mirrors. Additionally, video projectors can be used to project 3D images, also known as stereo imaging.

This was last updated in May 2017

Continue Reading About video projector

SearchCompliance

  • information governance

    Information governance is a holistic approach to managing corporate information by implementing processes, roles, controls and ...

  • enterprise document management (EDM)

    Enterprise document management (EDM) is a strategy for overseeing an organization's paper and electronic documents so they can be...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

SearchSecurity

  • spam trap

    A spam trap is an email address that is used to identify and monitor spam email.

  • honeypot (computing)

    A honeypot is a network-attached system set up as a decoy to lure cyber attackers and detect, deflect and study hacking attempts ...

  • cracker

    A cracker is someone who breaks into someone else's computer system, often on a network; bypasses passwords or licenses in ...

SearchHealthIT

SearchDisasterRecovery

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

SearchStorage

  • cloud testing

    Cloud testing is the process of using the cloud computing resources of a third-party service provider to test software ...

  • storage virtualization

    Storage virtualization is the pooling of physical storage from multiple storage devices into what appears to be a single storage ...

  • erasure coding

    Erasure coding (EC) is a method of data protection in which data is broken into fragments, expanded and encoded with redundant ...

Close