MURIDEO
  • Home
  • Products
    • Seven Series >
      • The 8K Seven Generator
      • The Seven Generator
    • Six Series >
      • 8K Murideo Pair: Ultimate HDMI Testing Set
      • 8K SIX-G Generator
      • 8K SIX-A Analyzer
    • 8K Fox & Hound: HDMI Troubleshooting KIT
    • Murideo HDBaseT Testing
    • Monitors >
      • 4K Dual Screen Field Test Monitor
    • Acoustic Calibration Kit
  • News
    • Blog
    • Newsletter >
      • Q2 2022
      • Q1 2022
      • 2021 >
        • June 2021
        • April 2021
        • March 2021
        • February 2021
        • January 2021
        • December 2020
  • Resources
    • HDMI 2.1 Bandwidth Calculator
    • HDMI Data Rate Charts >
      • Data Rate Chart
      • FRL Data Rate Chart
    • A/V Glossary
    • Loyalty Programs >
      • Upgrade Program
      • Shield Program
    • Videos
    • Test Pattern Library
    • Product Training >
      • Calibration Training
      • Fox & Hound Training
      • MSTest Pro Training
      • SIX-G Training
      • SIX-A Training
      • SEVEN-G Training
  • Support
  • Firmware
    • 8K SEVEN GENERATOR
    • SEVEN Generator
    • SIX G Generator
    • SIX A Analyzer
    • Fox and Hound
    • MU-M4SOL
    • Windows Drivers
  • Contact
  • Buy

The Best Meters for Laser Projectors

5/19/2022

0 Comments

 
​A light meter is an essential piece of hardware that should be in every calibrator’s kit. Many different meters can be used for display calibration, and in this article, I will explain two types with their respective pros and cons. 
 
Two technology types define meters used in calibration: spectroradiometers, also referred to as spectral meters or spectrophotometers, and tristimulus colorimeters. Both have relative advantages, disadvantages, and use cases.  
PicturePortrait Displays C6 HDR2000 Colorimeter
Most commonly used by calibrators is the tristimulus colorimeter as it works well in most situations, rapidly reading patterns. 

​

PictureKlein K10-A Colorimeter
Light to be analyzed is collected by a small lens, passing through red, green, and blue filters, and collected onto a sensor; a sequence mimicking how the our eyes work. Most tristimulus meters trade accuracy for speed. ​

PictureJETI Spectraval 1511
A spectroradiometer differs by sampling very precise wavelengths of light (expressed as nanometers) in corresponding amplitudes called nits (cd/m2, or candelas per square meter). Spectral meters are supremely accurate, however the pace at which they take readings can be extremely slow.

Picture
An important specification for spectroradiometer performance is optical bandwidth, detailing the “width” or wavelength of light, in nanometers. A spectroradiometer with an optical bandwidth rated at 10nm will read light accurate to a 10 nanometer tolerance. While usable for display types with broad spectral response, 10nm proves far too wide for application-specific display devices that are laser-based.

Picture
Many laser-based projectors utilize a blue laser as a component of the light engine. One characteristic for these designs is a narrow spike in spectral response, typically 4nm. 

​Logically, a spectroradiometer designed with a 10nm bandwidth will be unable to accurately measure 4nm wavelength, perhaps completely misreading spectral response. Laser projectors are only a few generations new compared to lamp-based machines that arguably can harken back to three-CRT based projectors. ​

PictureColorimetry Research CR-250 Spectroradiometer / Spectrophotometer
There is good news for devices that confront this issue in the form of narrow bandwidth spectroradiometers. Top-end models feature optical bandwidths of only 2nm, capable of accurately reading current Digital Cinema projectors and future products which may become more mainstream for residential applications. Aside from their narrow bandwidth, these spectroradiometers function identical to less costly spectral meters. Designed for what might be termed mission-critical use, 2nm spectroradiometers are currently priced nearly double to those with optical bandwidths in the 4nm range. 
 
Light meters arrive on the market in an array of technology types and with specific application advantages and disadvantages.

When meter shopping, be certain to inquire about and compare optical bandwidth as this directly contributes to light-reading accuracy, especially where calibration to laser-based projectors may be involved. 
​

Feel free to contact us with specific light meter questions and we will be happy to assist you in selecting a perfect meter for your needs. Ideally, professional calibrators benefit in having both styles of meters at hand, but let’s save the discussion for a later date.

0 Comments



Leave a Reply.

    Third Party Reviews & Articles

    SIX-G Generator
    • HDMI Corner: CEPro January 2016
    • CEPro BEST 2015
    • AVForums Review
    • Residential Systems
    • rAVe Europe
    • rAVe Pubs
    • rAVe Pubs (Video)
    • Tributaries e-Newsletter
    • AVMagizine.it
    • European Custom Installer

    Archives

    May 2022
    February 2022
    June 2021
    April 2021
    March 2021
    February 2021
    January 2021
    December 2020
    November 2020
    September 2020
    June 2020
    April 2020
    March 2020
    February 2020
    January 2020
    November 2019
    October 2019
    September 2019
    August 2019
    July 2019
    April 2019
    March 2019
    January 2019
    October 2018
    September 2018
    July 2018
    June 2018
    February 2018
    January 2018
    September 2017
    August 2017
    July 2017
    May 2017
    March 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    August 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    January 2016
    December 2015
    October 2015
    September 2015

    Categories

    All
    HDMI 2.0 Troubleshooting

    RSS Feed

© Copyright 2015-2022
Home
Contact Us
About Us
Careers

2222 E 52nd Street North, Suite 101, Sioux Falls SD 57104
+1 605-330-8491
info@murideo.com
​Terms & Conditions | Privacy Policy
  • Home
  • Products
    • Seven Series >
      • The 8K Seven Generator
      • The Seven Generator
    • Six Series >
      • 8K Murideo Pair: Ultimate HDMI Testing Set
      • 8K SIX-G Generator
      • 8K SIX-A Analyzer
    • 8K Fox & Hound: HDMI Troubleshooting KIT
    • Murideo HDBaseT Testing
    • Monitors >
      • 4K Dual Screen Field Test Monitor
    • Acoustic Calibration Kit
  • News
    • Blog
    • Newsletter >
      • Q2 2022
      • Q1 2022
      • 2021 >
        • June 2021
        • April 2021
        • March 2021
        • February 2021
        • January 2021
        • December 2020
  • Resources
    • HDMI 2.1 Bandwidth Calculator
    • HDMI Data Rate Charts >
      • Data Rate Chart
      • FRL Data Rate Chart
    • A/V Glossary
    • Loyalty Programs >
      • Upgrade Program
      • Shield Program
    • Videos
    • Test Pattern Library
    • Product Training >
      • Calibration Training
      • Fox & Hound Training
      • MSTest Pro Training
      • SIX-G Training
      • SIX-A Training
      • SEVEN-G Training
  • Support
  • Firmware
    • 8K SEVEN GENERATOR
    • SEVEN Generator
    • SIX G Generator
    • SIX A Analyzer
    • Fox and Hound
    • MU-M4SOL
    • Windows Drivers
  • Contact
  • Buy