ในวิดีโอนี้ฉันจะแสดงชิป DMD หรือ Digital Mirror Device ที่ดีมาก ๆ ซึ่งสามารถสะสมได้มาก เทคโนโลยี DLP เป็นเทคโนโลยีที่น่าสนใจมากโดยทั่วไป และในวิดีโอนี้ ฉันจะอธิบายเรื่องนี้เล็กน้อย เราจะตรวจสอบด้วยกล้องจุลทรรศน์ถึงแม่พิมพ์ของอุปกรณ์ดังกล่าว และตรวจดูไมโครมิเรอร์อย่างใกล้ชิด ฉันจะพยายามขับชิปดังกล่าวด้วยบีมเมอร์เพื่อให้มีมุมมองที่ตรงบนอุปกรณ์มิเรอร์เพื่อตรวจสอบว่าเราสามารถเห็นภาพที่นั่นหรือไม่ สนุก 🙂 ลิงก์ Wikipedia: ขอบคุณที่รับชม หากคุณต้องการบริจาคหรือสนับสนุนช่องนี้: หากคุณต้องการบริจาคสื่อหรือติดต่อกับฉัน เพียงแสดงความคิดเห็นด้านล่างหรือส่งอีเมลมาที่: [email protected] ค้นหาฉันบน
Images related to the topic technology device
DLP Technology & Digital Mirror Device under Microscope and Image Test, CAUTION: Super Interesting
Search related to the topic DLP Technology & Digital Mirror Device under Microscope and Image Test, CAUTION: Super Interesting
#DLP #Technology #amp #Digital #Mirror #Device #Microscope #Image #Test #CAUTION #Super #Interesting
DLP Technology & Digital Mirror Device under Microscope and Image Test, CAUTION: Super Interesting
technology device
ดูวิธีการทำเงินออนไลน์ล่าสุดทั้งหมด: ดูเพิ่มเติมที่นี่
ดูวิธีการทำเงินออนไลน์ล่าสุดทั้งหมด: ดูเพิ่มเติมที่นี่
Thanks for sharing and especially for the views under the microscope. Also, I believe that the intensity of individual pixels is achieved by varying the rate of switching on each mirror per image frame.
Super awesome! Now I know what to look for next at eBay….by the way, if you would have played doom on this dmd, you would have beaten your record as I think the dmd is around one inch!
I have DLP beamer with broken power supply. Found out how control the system so it can turned on without lamp! Ofc it depends on where you can find the signals and control it with switches so it can turned on with custom 12V power supply. 🙂
But it's possible on some beamers to remove xeon lamp and replace it with LED light and add small circuit to turn on the system.
There are already DLP beamers with 3-color Laser leds. You will notice the light beam is much SMALLER compared to LCD beamer. The light loss seems pretty high in DLP beamer due small hole. There is no large lens array to bundle light to DLP mirror, just dumb-ass small hole. Because it must pass colorwheel.
Bigger DLP beamers have more room, so there might lens array to bundle light to lightbeam.
Thanks to good reflective DLP beamer, not much light is lost here. LCD beamer has much wider light beam but light loss is slight more in LCD panels, also some loss in splitting lights in 3 light beams for each color. Looking at light path, DLP beamer seems not very effective.
This was freaking awesome!
Thanks for the video.
The intensity is due to the color wheel sections. It often has multiple sections of transparant wheel usually to make it brighter. Some have multiple sections of the colors on the wheel. The mirrors can flash 10thousand times per second, it strobes extremely fast through the correct colors on the wheel. It stays reflective more for brighter image, while it blocks light more of the time for a darker one. Because it's 10000 per s, you don't see this and percieve a single image.
Excellent. Best description I've seen.
How does this guy spend countless amounts of money on processors that sometimes he'll never even use..? I mean… Being a computer enthusiast myself has taught me to value all sorts of hardware in fact one of my computers is an iMac G3 (but it's down and making a clicking noises over and over again even after replacing the PMOS battery)
I am also fascinated by DLP as a technology. DLP uses the * fast * mirror movement to reflect light in a direction or another (fully saturated color is 1 and no saturation color is 0). The 1 is fully reflected into the lens, the 0 is reflected away from the lens. How fast is that switching? It goes up to 9 kHz, that is 9000 times a second for each pixel (newer ones go up to 32 kHz). This is how they manage to get all the grayscale values for each color by synchronizing with the color wheel and setting the grayscale for each image 30 or 60 frames per second, that is about 90-180 frames per second to get the full spectrum of color. All the intermediate grayscale patterns are done by the rapid switching between the fully saturated state and no saturation state. This is easy because the chip is capable of up to 9000 Hz switching and being digital it can easily synchronize with the color wheel for full color rendering. DLP is capable of 1024 shades of gray for each color individually, that makes up 1,073,741,824 colors for RGB or even more for CYMK. The human brain is blending the rapidly switching images to get a fluid movement. I hope it clears your question at the end.
I still have mine from an old Samsung. The chip has what appears to be a burn in image of Xion (desktop wallpaper of Kingdom Hearts) because I used this as a desktop PC. If I hold up to the light just right, I can see it pretty clear.
I must admit, I was looking forward to seeing the action of the DLP chip through a microscope.
Amazing how clearly the moving images appears on the chip!
The change in intensity is sorta not whats going on. This is a correction taking place to the color wheel. There are two different types of color wheel. One with 2 of each (blue,green,red) and another that has transition colors (ie a blend of two colors and a solid color. When there is a variation of a color outside the color band the transition color is used to give a better color tone. This requires more light. So the gradient changes when you go from a solid primary color to a in between color. Hope that makes sense.
I agree,
Super interesting 🙂
& very well explained
Thanks
You get a thumbs up for showing the into of Sakura Taisen on the DLP. 😉
There is no any problem to make a different intensity of colors, as you have notice, color wheel rotating at high RPM, so every frame gets multiple wheel rotations, as you can imagine, mirrors should turn on an off at least once per color, and for DLP device it is not a problem to turn on and off multiple times per color, so its just PWM
They are a super cool addition to a collection! I got into DMDs a bit and managed some decent microscope shots of them running, though they where the pocket projector form factor which easily fit on the microscope stage. These have always fascinated me, the engineering is absolutely mind boggling. If you have a chance check out some of the MEMs micro mirrors, they are also really cool.
Thank you for the detailed information and sharing this:)
Also, Disney: "We have to strike this!"
I never knew how DLP projectors worked. I always assumed it worked like a film projector as in the DLP chip had light shines through it. I always wonders how they could withstand so much heat. I never thought about the possibility of all those tiny mirrors physically moving. That's wild.
Heat sink on dlp is for heat of lightsource
Pretty cool technology, and I love the look of those gray/gold ceramic chips.
The MDs will have a light dump were they aim the mirror to dump the excess light to modulate the brightness
The pixels are pulse width modulated, not sure of the frequency but these chips update pixels very very fast. It's amazing the speed, precision and sheer quantity of electromechanical parts on these devices. Look into the consumer "4k" projectors, they seem to be using 1080p chips but are doing some sort of pixel shifting, combined with up to 6+ updates (3 color wheel RGB x2) per 60Hz refresh you can start to see why the chip needs a big heatsink (aside from being blasted from the front with a few hundred watt lamp). Would be interesting to see a follow up investigation! Edit: Also it's electrostatic, so those pixels may not be dead, just stuck.
It's impressive, but I always preferred LCD projectors – the rainbow effect when your eyes move to a different part of the screen gave me a headache as well as ruining the movie. Some people aren't as sensitive though, and the DLP contrast was better than LCD.
I have a friend that still has a working Hitachi Ultravison 57" widescreen DLP projection tv they had surprisingly good picture for the time. No idea what chips Hitachi ran only downfalls were there price and only 1080i interesting technology though never seen a close up of they chips before.
just a hint: the term "beamer", americans will understand, that you are talking about a BMW, they call it projector.
the brightness is controlled via pulse width modulation – switching the pixels on and of at a pretty high frequency. it should be possible to meassure that frequency with a photo diode, hooked up to an oscilloscope.
PS: i've recently come across the avegant glyph video goggles, which use miniature DLP projectors instead of the usual LCD or OLED displays. looking foward to trying those out. compared to 720p goggles sold for FPV, they're an absolute bargain.
As a projector enthusiast on his 4th dlp, great video!
It's impressive how MEMS completely flips what we understand of materials on it's head. The effects on the material like fatigue and such change completely to what applies in a macroscopic manner, hence they even work to begin with, the amount of deflection, how many per second and speed of the mirror deflections would be completely unfeasible in a macroscopic scale. Let alone the energy to keep flipping the mirrors fast enough for moving pictures with different shades of light.
Thanks!! I was repair movie theater projectors, it's amaze technology) But soon in theater will be a big LED screens and DLP go to the history..
Careful if you drop one of those, it's 2 million years of bad luck 😉
Thing is, Audi uses this in their newest Headlamps. I tought about that many years ago when I had my first DLP beamer, that you could use that to modulate low and highbeams in a pixel perfect manner and create a Matrix LED system, much better than even modern ones. Tought about that around 2011, but there I was too young to make something about it, also, DLP Beamers then were expensive as hell 😀
They clearly won't use regular DLP's, they must be fancy high reliable ones, but nonetheless, DMD's are facinating technology that is now even used in Headlamps (Audi E-tron).
The reason why you can see different light levels from the Micromirrors is that your eye is integrating the perceived scene's light level over a given timescale, therefore if you keep flipping the mirrors at really high speeds, you can see an average light level which is proportional to the amount of time that the mirror is in the on position.
I didn't know how those work, fascinating video.
The chip itself doesn't really heat up that much but only a percentage of the light gets reflected, the rest is dumped as heat in the chip case. If you stick a piece of paper into the light in front of the chip it will be set on fire immediately. The light is extremely intense.
The micro mirrors vibrate back and forth to create tonal values. When DMDs fail its due to the mirrors being stuck or moving extremely slow. I used to work on rear projection DLP and 3LCD rear projection TVs for over 10 years. The biggest pain in the butt with those TVs was the ballast going out after the lamps would go out. People would replace the halogen lamp themselves, but touch the surface with their oily fingers thus significantly shortening the life. Color wheels were easy to replace and easy to tell when they were going bad (the bearing would fail) and it would sound like the tv was a vacuum cleaner. Lol.
My daily driver (watcher) is still my Samsung series 8 LED DLP 62”. They’re LED for the light source unlike a lot that had a bulb that needed a bulb that needed replacing. Bought it new in around 2008 for ~$2000 cdn on sale. 1920*1080.
About 4-5 years after lots of use it started to get white dots (stuck mirrors) and black dots (dead mirrors). When it got to be too much I tore the whole set apart and ordered a new dlp module (about $250). There was a common failure on these where they didn’t put enough heat sink compound on the module. Added some good compound under the new module, and it’s been working perfectly since then.
I remember when these we’re on the market. They were expected to have fail pixels with a year. They never should’ve made it to market.
I was hoping, that you show the working chip under the microscope somehow.
9:24 Xeon Lightsource, the small sister of a Ryzen Lightsource? 😉
Good video as always!
And the DLP Technologie is really high tech with all these tiny mirrors which have to work flawlessly in order to get a good picture. In comparison to your 10MB Hardrives which you could repair with a hammer and a screwdriver, these devices were much more filigran.
DMD doesn't grey scale. It dithers or pwm's
Amazing stuff people can build when they are not involved in all kinds of hatred but just focus on the job.
my favorite video to date
with this video you save the life of my old svga Benq
Very cool! Thanks! (DLP technology is really se yellow from se egg! ;-))