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Light from a liquid light show, being projected behind a guitarist Layers of colored mineral oil and alcohol move over the projector lens and produce changing color patterns. Liquid light shows (or psychedelic light shows ) [ not verified in body ] are a form of light art that surfaced in the early 1960s as accompaniment to electronic music and ...
The Joshua Light Show based their shows on four elements; projection of pure color, concrete imagery, variety of color effects and shaping of the light. The Joshua Light Show has provided visual backgrounds for Janis Joplin , the Grateful Dead , the Who , Jefferson Airplane , the Band , the Doors , Frank Zappa , Lou Reed , Television , Vanilla ...
It is a modern equivalent of the slide projector or overhead projector. To display images, LCD (liquid-crystal display) projectors typically send light from a metal-halide lamp through a prism or series of dichroic filters that separates light to three polysilicon panels – one each for the red, green and blue components of the video signal ...
Liquid crystal on silicon (LCoS or LCOS) is a miniaturized reflective active-matrix liquid-crystal display or "microdisplay" using a liquid crystal layer on top of a silicon backplane. It is also known as a spatial light modulator .
A spatial light modulator (SLM) is a device that can control the intensity, phase, or polarization of light in a spatially varying manner. A simple example is an overhead projector transparency . Usually when the term SLM is used, it means that the transparency can be controlled by a computer .
The other method is to block the light (a transmissive LV). The blocking method has found its way into liquid crystal displays (LCDs), video projectors and rear projection TVs. In this type of screens and projectors, the source light is first polarised by a filter in one direction and then passed on to another filter, filled with liquid ...