What is Laser

NEC is in the unique position of offering a new portfolio of Laser projectors. Solid State Light Sources (SSL) are light producing systems made up of either LED devices or Laser Diodes. Light produced with Laser systems inherently have a longer and steadier brightness that decreases at a much slower pace over time than lamp based systems. This technology offers the highest image quality while its operating life span far exceeds traditional lighting methods.

  • What to expect from a Laser Projector:
    1. Lower maintenance costs
    2. Consistent light ouput
    3. Longer life
    4. Constant color rendition
    5. Up to and including 24x7 operation
    6. Lower brightness decline during life time
    7. Better brightness uniformity
    8. Higher reliability
    9. Higher contrast
    10. Wider color gamut
    11. Lower energy consumption and lower thermal emission
    12. Instant on/off capability, flexible brightness adjustment (20-100%)
    13. Mercury free

Laser Offers New Benefits

There are numerous benefits to these solid state light source projectors, but the bottom line is that they address the needs of the market and will be adopted in growing numbers.

Their qualitative brightness superiority and potential for energy savings combined with the significant reduction of maintenance cost makes it likely that they eventually replace lamp-based projection systems as the primary projection light source in the future (69% of installation market expected in 2019 according to Futuresource).

In our whitepaper "The Future is Now - Benefits of laser Cinema Projectors" you can find a calculation on cost savings of a laser projector compared to a lamp illuminated model, using the specific example of the NC1100L.

Main Solid State Light Source Technologies

The three most important technologies, LED, laser phosphor and RGB laser, are described below.

Optical Architecture of LED Light Source

This was the first solid state projector type to be commercialized about 7 to 8 years ago but it is limited in the light output and mainly used in specialty markets.

LED systems include only red, green and blue LEDs to produce images that adhere to the SMPTE color space.

  • Benefits
    1. Small form factor
    2. No color of phosphor wheel
    3. 20,000 hour life time
    4. Higher resolution (up to native 4K)
  • Considerations
    1. Limited brightness capability
    2. Limited screen sizes
View NEC's LED Projectors

Optical Architecture of Laser Phosphor Light Source

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
    1. High brightness
    2. True colors
    3. 20,000 hour life time
    4. Large screen sizes
    5. Installation flexibility
  • Considerations
    1. Mirrors SMPTE color space
View NEC's Laser/Phosper Projectors

Optical Architecture of RGB Laser Light Source

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 AdobeRGB.

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
    1. Highest color space available
    2. Scalable
    3. 20,000 hour life time
    4. Higher resolution (native 4K)
    5. Installation flexibility
  • Considerations
    1. Higher Cost
View NEC's Laser Projectors

Hybrid Systems

NEC does not currently offer a hybrid system.

Hybrid systems include the Solid State Light Source combined with other elements to create colors and can include LED/Laser/Phosphor.

LED/Laser or LED/Laser/Phosphor
  • Benefits
    1. Small form factor
    2. Lower cost
    3. 20,000 hour life time
  • Considerations
    1. Higher operating temperatures
    2. Color capabilities
    3. Limited brightness capability