What is projector and its types?

What is projector and its types?

This article discusses the modern projectors, including 3-chip and 1-chip models, their key features, DLP, LCD and LCoS technologies, their pros and cons, Screen-Door, rainbow and posterization effects, etc. The article also contains a video showing the visualization of the rainbow effect (color artifacts along the contour of fast-moving objects) in 1-chip DLP projectors.