Accurate color with no ‘rainbow effect’ can be seen in the image above.
1-chip projectors use a rotating color wheel that spins at a rapid speed, only displaying colors one at a time sequentially. A viewer’s visual system combines the series of colored images into a full-colored picture. With this, viewers will sometimes see an artefact known as the “rainbow effect”.
The rainbow effect is most noticeable with fast moving video, especially bright objects on dark backgrounds. It is also apparent when moving your eyes from side to side, such as when reading text.
The image below is an example of the rainbow effect that was captured by a moving camera while the shutter was open. This is equivalent to what you will see when your eyes move quickly across the screen.
Epson’s 3LCD technology avoids this visual artefact by using mirrors to separate white light from the projector lamp into red, green and blue light. Each of the three light colors is then passed through a LCD panel and recombined using a prism before being projected onto the screen.
The result: accurate color that’s easier on the eyes.
