LASER Projectors

Laser-illuminated projectors use arrays of laser sources illuminating a microdisplay engine. In the most common Laser Phosphor approach, a blue laser is used for creating the blue color in the final image, but the blue laser is also used to illuminate a yellow phosphor wheel, which emits yellow light. This yellow light is then split by a prism or color wheel into green and red light. Maximum color space is limited to the SMPTE standard.

Laser/Phosphor systems include the Solid State Light Source combined with phosphor to produce images that adhere to the SMPTE color space.

Benefits

• High brightness
• True colors
• 20,000 hour life time
• Large screen sizes
• Installation flexibility

 

Single LASER Phosphor Projection System

 

RGB laser on the other hand, uses the so-called ‘pure laser’ technology. Here red, green and blue lasers deliver the light directly. The product of this technique is an absolutely pure colored light that is split into the three channels. The light is emitted in a very narrow band in discrete frequencies. This makes it possible to realize a color space that reaches BT2020 therefore exceeding even that of Adobe RGB.

RGB (red, green and blue) laser is the only true “pure laser” which produces the BT2020 color space using only lasers without the need for additional components such as LED or Phosphor.

Benefits

• Highest color space available
• Scalable
• 20,000 hour life time
• Higher resolution (native 4K)
• Installation flexibility

 

3 LASER RGB Projection System

 

No Projector Lamp Replacements

When a Laser fails, or reaches 20,000 hours, it can't be replaced - there are no replacement lamps.

Do Laser Projectors Dim over time?

The truth is that brightness drops off with all light sources. When you reach the quoted lifespan, brightness is at 50%.

With Laser projectors this can cause an issue. if you have a video wall using 3 projectors, one lamp blows. You replace all the lamps, brightness is then matched. If one of the Laser projectors were to fail, it would have to be replaced. The new projector would have 100% brightness, the other two, depending on their age could be well below this. They may have to be replaced to match.

Some manufacturers have intoroduced a constant brightness feature, where the projectors run at say 75% brightness and can use the 25% to keep the output constant.

 

LASER brightness over time