The reason of rainbow effect is that the color wheel rotates too fast, and the eyes can't keep up with the change, which leads to discontinuous color switching, thus causing wavy color effect. Although this phenomenon looks uncomfortable, it usually does not have a serious impact on the projector itself and image quality.
However, if you want to deal with the fluctuation of the projector, there are several ways:
1. Adjust the position of the projector: adjust the position of the projector beyond the position where you are sitting. Because the closer you sit, the faster the color changes, and the more prone to rainbow effect.
2. Reduce the brightness: Reducing the brightness of the projector can reduce the speed of the color wheel, thus reducing the rainbow effect.
3. Replace the projector: If you are particularly uncomfortable with the rainbow effect, you can choose to replace the projector using LCoS (liquid crystal reflective thin film transistor) technology or 3LCD (three primary colors liquid crystal display) technology. These technologies do not use a color wheel, so there is no rainbow effect.
4. Adjust the image frequency: Some projectors can reduce the rainbow effect by adjusting the frequency. You can check the manual of the projector to learn how to set the frequency.
Generally speaking, for the average user, the slight rainbow effect is acceptable, so don't worry too much. If you are particularly concerned about this problem, you can try the above methods to deal with it.