Author Archive: Mark Rejhon
The Casio high speed camera has arrived! Β An exclusive from The BlurBusters Lab:Β A high speed 480 fps video of an LCD refresh. Β This video shows the pixel refresh in super slow motion. Β (silent video) This is a 2007-era LCD monitor,...
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Inexpensive motion-blur tracking camera being obtained
The BlurBusters Lab is expanding! Β Two new developments: (1) A Casio Exilim EX-FC200 has been obtained, for high speed (480fps, 1000fps) capture of scanning/impulse/flashing backlight patterns of existing and future LCD displays. (2) An open-source motion-blur tracking camera dolly is...
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nVidia LightBoost 2 strobed backlight reduces motion blur
This excellent AnandTech articleΒ shows that nVidia is also developing LightBoost 2 to also reduce motion blur. LightBoost is essentially a strobed backlight for 3D monitors, which strobes while 3D shutter glasses are open, and then turns off while waiting for...
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One shipment of ultra bright LED ribbons has arrived!
One set of LED ribbons have now arrived. They are BRIGHT! Color purity is good; they are definitely backlight-quality and extremely unfiorm. IΒ will be using 900 LED’s (22 lumens each) as a backlight in a single 24″ computer monitor —...
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Panasonic 2500 Hz Focused Field Drive in Plasma — A Similar Goal
Speaking of impulse-driven technologies, Panasonic Germany has several very interesting videos of various technologies of their high-end plasma (2500 Hz focussed field driveΒ – FFD) and LCD displays (1600 Hz scanning backlight) – multiples of the European refresh rate of 50...
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Over 1000 watts of LED ribbons ordered!
Three different brands of LED ribbons have now been ordered from several suppliers. Β The current working goal is to create a backlight that isΒ 150 watts per square foot, withΒ 10,000 lumens per square foot. Β The brightest ribbon I’ve ordered is...
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How to disassemble an LCD
Designing a scientifically proper scanning backlight from scratch, for an existing LCD computer monitor, requires disassembling LCD’s. There is anΒ LCD parts store page that has info useful during my research, including a YouTube video on how to disassemble LCD panels...
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Sneak preview of Arduino Input Lag Meter!
Coming soon: How to build your ownΒ Arduino-powered input lag meter using a photodiode! No soldering needed. Cable latency accuracy of +/- 1 microsecond and input lag accuracy of +/- 0.1 millisecond (once zero-calibrated with a CRT display first on the...
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Zero Motion Blur FAQ
ARCHIVES: This is an older 2012 FAQ This is an old Blur Busters article from the days before LightBoost.Β More recent content includeΒ LightBoost HOWTO,Β LightBoost FAQ, Samsung Zero Motion Blur HOWTO, Scanning Backlight FAQ, and Electronics Hacking: Creating a Strobe Backlight. Good...
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240 watts of LED backlight for a 23″ computer monitor!
[This is a very old article from scanning backlight experiments in 2012] A 23″ LCD computer monitor is 286mm high x 508mm wide.Β From math calculations onΒ LED ribbons (120 LED per meter, 6mm wide, 6500K, ~10watt/meter, 80+CRI available), one can put...
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About Mark Rejhon About This...
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Scanning Backlight FAQ
ARCHIVES: This is an older 2012 FAQ Frequently asked questions about flashing backlight technologies (scanning backlights, strobed backlights, black frame insertion), including how they work. Click the questions to see the answers. For info on ULMB / LightBoost / etc,...
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