What causes rainbow effect on projector?

What causes rainbow effect on projector?

The Rainbow Effect often referred to as RBE, is a “stroboscopic” affect that has some people seeing flashes of red green and blue. This is caused by the eye/brain dealing with the effects of projectors using high speed, spinning, color filter wheels.

How do I stop the rainbow effect on my projector?

The higher the speed, the lower the chances of the rainbow effect cropping up. Most new single-chip models use LED bulbs which further cut down on the effect. To fully eliminate RBE, opt for LCD of LCOS projectors. Three-chip DLP projectors don’t exhibit the effect either, but are on the expensive side.

Do LED projectors have rainbow effect?

LED projectors don’t use color wheels. They rapidly sequence the different color LEDs on and off. The faster the on-off sequencing the less likely you are to see rainbows. Practically speaking most LED projectors do not have enough RBE effect to be noticed even by those who are most sensitive to rainbows.

Do laser projectors have rainbow effect?

Banned. They can if color is done sequentially. Anytime you do sequential color you run the risk of seeing rainbows even if colors are flashed extremely fast.

What is the rainbow effect called?

This effect is called dispersion. Blue light (shorter wavelength) is refracted at a greater angle than red light, but due to the reflection of light rays from the back of the droplet, the blue light emerges from the droplet at a smaller angle to the original incident white light ray than the red light.

How can we reduce the rainbow effect?


  1. # 1: Reduce the brightness settings on your machine, or switch to ECO mode.
  2. # 2: If there is a setting to allow it, try turning up the color wheel speed, so that the image processing time is faster.
  3. # 3: Try dimming the ambient light in your viewing space.

How do I reduce the rainbow effect in DLP?

Is Rainbow a phenomenon?

Rainbows are the result of the refraction and reflection of light. Both refraction and reflection are phenomena that involve a change in a wave’s direction. A refracted wave may appear “bent”, while a reflected wave might seem to “bounce back” from a surface or other wavefront.

Is DLP better than LCD?

LCD Projector. While LCD projectors have a sharper image and superior picture quality, DLP projectors are lighter, portable, and considered to be more reliable. DLP (Digital Light Processing) technology uses micro-mirrors to project images from a monitor onto a large screen.

What causes the rainbow effect on a projector?

The Rainbow Effect. Most projectors with 1-chip DLP technology use a rotating color wheel to project colors sequentially, which causes some viewers to see a phenomenon known as the “Rainbow Effect”.

Where can I find rainbow effect in Photoshop?

Rainbow effect is most commonly, pretty much exclusively, found in single-chip DLP projectors that use a color wheel to create all the different colors necessary for an image. Occasionally, this process can create rainbows

What is the cause of the DLP rainbow effect?

The Cause of the DLP Rainbow Effect. The rainbow effect is possible on a broad range of DLP projectors that use single chips. This phenomenon occurs because these projectors use separate chips that produce color sequentially (red, blue, then green.) That is, the projector displays all of an entire color before moving on to the next.

What makes an Epson LCD not have a rainbow effect?

Unlike 1-chip DLP projectors, all Epson projectors use 3 individual LCD chips to generate red, green, and blue light that is projected simultaneously. This technology eliminates the conditions that can create the Rainbow Effect, thus making 3-chip LCD projectors immune to that phenomenon.