Related
http://www.youtube.com/watch?v=htqvKsPhVM8
This is my burning Red Laser, made with a Sony 20x DVD Diode, and a flashlight. it burns everything, seriously, I haven't run into anything that it cant burn yet.
youtube comments are apprecieted.
needled 24/7.
that thing is sick how did u do that?
Harvest the Diode from a DVD player, put it in a flashlight that you prefer... here's a guide on youtube that explains all the steps:
http://www.youtube.com/watch?v=CgJ0EpxjZBU&feature=related
i keep watching it's too good.
Somebody likes bodom i see?
etnies said:
i keep watching it's too good.
Somebody likes bodom i see?
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Click to collapse
haha on my laser forum no one agreed with my music. someone said "the music was alright" but otheres just said "i dont agree with the music" or "the screaming music wasnt needed"
here's my other forum:
http://www.laserpointerforums.com/forums/YaBB.pl?num=1206219782
if your interested in lasers i suggest registering there
it's way cool...*but*
...it's a good way to go blind, too. specular reflections off things in the room could pretty easily zap you in the eye. there was a huge discussion on slashdot on these things a while back which started off as "woah!", progressed to "yes but" and then got more frightening as time went on. you will *not* be able to blink fast enough to avoid eye damage...
No problem, just wear shades.
*sigh* stop hatin man, **** is hot
shades? how would that help?
hidavi said:
No problem, just wear shades.
*sigh* stop hatin man, **** is hot
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Click to collapse
http://slashdot.org/article.pl?sid=07/08/09/0412215&from=rss
seriously - it's kind of cool, but messing with it carries a significant risk of blinding you and people around you. in an unpredictable, "but i just shone it over there and didn't realise there were some slightly shiny surfaces, officer" type of way. instant retina damage...
landwomble said:
...it's a good way to go blind, too. specular reflections off things in the room could pretty easily zap you in the eye. there was a huge discussion on slashdot on these things a while back which started off as "woah!", progressed to "yes but" and then got more frightening as time went on. you will *not* be able to blink fast enough to avoid eye damage...
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Click to collapse
yea this thing is no toy, more of a weapon I'd say. i ordered some shades. when i first got this laser i didnt think i would need them, but i found out how bright this really was, this video doesnt not show how bright it is at all, you just have to see for yourself. looking at the dot is like looking at the sun, it gives you a huge blind spot like the sun does.
on my laser forum people say not to wear sunglasses while using lasers, as it's even worse. aparently it doesnt filter thru the light so its just as using the laser without the sunglasses, but to make things worse, since the sunglasses are dark your eye tries to take in even more light, therefor taking in even more red light! so wearing sunglasses are just worse.
It looks quite powerful,I just bought a 400mw green laser pointer
Hahaha Mike, that music is classic!
Holy crap! I want a 1000mw laser! >
I have a 200mW red laser from dealextreme.com
burns everything
my video
http://www.youtube.com/watch?v=7pF8qdkDKGc
its black head match
burns instantly
be careful to use a power regulator so the diode doesnt burnout as quickly.
boyankir said:
It looks quite powerful,I just bought a 150mw red laser pointer from
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Click to collapse
ugh.. I'd never pay that much for a red, considering that now you can buy a high powered 20x diode for under $20. Then put it in a module ($3), put that in a heatsink ($20), put the heatsink in any style case you want (lets just say a $10 case). Buy a Driver (anywhere from $10 - 20 depending on the driver). And Last but not least, batteries ($4).
That's a total of $57 - $67
Again, here is a list of the items needed to build a laser:
Diode - $20
Module - $3
Heatsink - $20
Driver - 10 - 20$
host (flashlight case) - $10 - xx
Batteries - $4
You decide which is better, paying the extra "buisness costs", a total of $240.00 just for 150mW... or building one yourself for only $70 - $80..which btw can easily (AND SAFELY) reach 210mW - 250mW. PM me if you wanna learn more about building a laser.
The nice thing about building lasers is once you've already bought everything up above, (usually) the only thing that can die is the Diode, and a replacement is cheap. I believe one of the most recent prices I saw on a Red Diode was $17.50. BluRay diodes are getting cheaper as well, about $11.50 for 100mW of blu ray!
zeezee said:
be careful to use a power regulator so the diode doesnt burnout as quickly.
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Click to collapse
lol it died a while back, i should probably lower the current... I'll replace it when I get a job.
------
respider said:
I have a 200mW red laser from dealextreme.com
burns everything
my video
http://www.youtube.com/watch?v=7pF8qdkDKGc
its black head match
burns instantly
Click to expand...
Click to collapse
the DX laser is good for it's price. And since it's a Red there is really no way they can mess it up (DX can be known for it's poor quality, as well as outstanding quality lol).
I've seen some mods done to this laser where they replaced the diode with a more powerful one and it was much more powerful!
mikeeey said:
yea this thing is no toy, more of a weapon I'd say. i ordered some shades. when i first got this laser i didnt think i would need them, but i found out how bright this really was, this video doesnt not show how bright it is at all, you just have to see for yourself. looking at the dot is like looking at the sun, it gives you a huge blind spot like the sun does.
on my laser forum people say not to wear sunglasses while using lasers, as it's even worse. aparently it doesnt filter thru the light so its just as using the laser without the sunglasses, but to make things worse, since the sunglasses are dark your eye tries to take in even more light, therefor taking in even more red light! so wearing sunglasses are just worse.
Click to expand...
Click to collapse
There are a few companies that sell safety glasses that have some filtering capabilities. Now, this doesn't mean that you can look at the damn thing directly, but they might save you from blinding yourself. Really cool stuff though.
egzthunder1 said:
There are a few companies that sell safety glasses that have some filtering capabilities. Now, this doesn't mean that you can look at the damn thing directly, but they might save you from blinding yourself. Really cool stuff though.
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actually... (this may sound stupid.. so be prepared!) you can look directly into it while wearing the safety goggles. It blocks ALL of the light (unless of course you have a multi Watt laser. If you're actually wearing the shades and you point the dot at the wall all you will see is a tiny yellowish looking dot.
Hmm, I'd be careful if I were you.
mikeeey said:
actually... (this may sound stupid.. so be prepared!) you can look directly into it while wearing the safety goggles. It blocks ALL of the light (unless of course you have a multi Watt laser. If you're actually wearing the shades and you point the dot at the wall all you will see is a tiny yellowish looking dot.
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Click to collapse
Depends on the wavelength that can be filtered by the goggles, but you are right. Although, I wouldn't try it
Has anyone experienced LCD image burn-in on their captivate? I just noticed yesterday that when I have a web page up I can look on the left side and see Pandora Radio's controls.
well modern lcd's dont expereince burn in and the captivate doesn't have an lcd it has an oled tft not lcd tft. specifically it is "super" amoled. yes amoled screens are suseptible to burn in but not as much as standard oled. however it is very apparent on att display models in the stores. that said i run mostly dark themes and dont have any burn in that i can see, my phone is coming up on a year old.
Edit: Beaten to the LED thing.
Just to clarify, the Captivate screen uses LEDs, not LCD technology. That said, LEDs are much more susceptible to burn-in, and my screen has it. It's most noticeable around the notification bar clock at the upper right, since it's almost always displayed. It's most apparent on solid or almost solid screens.
It doesn't really bother me, I guess.
Perception 10.2 | Onix 2.0.4 | I9000UGKC1
well leds aren't suseptable to much loss of brightness but oled technology doesnt use the same type of semiconductors. it is organic light emitting diodes. the organic material deteriorates over time.
in oled there is no lcd or backlight. the organic led's are the pixels
dont associate oled too much with leds because with lcd's led backlights are far superiors to florescent backlights. not only in color balance and temperature and power consumption but also in longevity.
Thank you guys for your replys, it doesn't bother me too much. I was just checking, I leave Pandora up all the time while I am at work and now that I have this information from you all, I know to not do that so much.
PeteSeiler2010 said:
Thank you guys for your replys, it doesn't bother me too much. I was just checking, I leave Pandora up all the time while I am at work and now that I have this information from you all, I know to not do that so much.
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Click to collapse
just turn the screen off if pandora is running.
read in night, not dazzling
Do you mean LCD?
Maybe he does mean led. The perfect blacks on amoled are excellent for reading white text in black environment. I've wanted to punch the lcd backlight many times over.
LED or LCD, turn the brightness down, no dazzling, can read at night. I don't see the
I like Doritos.
Change thread title to "how to get a locked thread"
Sent from my Nexus 7 using Tapatalk 2
Umm...what is this?
Sent from my Samsung Galaxy S2 using Tapatalk 2
raazman said:
Umm...what is this?
Sent from my Samsung Galaxy S2 using Tapatalk 2
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That's what she said?
Slap-Yourself :) said:
raazman said:
Umm...what is this?
Sent from my Samsung Galaxy S2 using Tapatalk 2
Click to expand...
Click to collapse
That's what she said?
Click to expand...
Click to collapse
Ouch... just, ouch.
hihi
Efficiency: LEDs emit more light per watt than incandescent light bulbs.[99] Their efficiency is not affected by shape and size, unlike fluorescent light bulbs or tubes.
Color: LEDs can emit light of an intended color without using any color filters as traditional lighting methods need. This is more efficient and can lower initial costs.
Size: LEDs can be very small (smaller than 2 mm2[100]) and are easily attached to printed circuit boards.
On/Off time: LEDs light up very quickly. A typical red indicator LED will achieve full brightness in under a microsecond.[101] LEDs used in communications devices can have even faster response times.
Cycling: LEDs are ideal for uses subject to frequent on-off cycling, unlike fluorescent lamps that fail faster when cycled often, or HID lamps that require a long time before restarting.
Dimming: LEDs can very easily be dimmed either by pulse-width modulation or lowering the forward current.[102]
Cool light: In contrast to most light sources, LEDs radiate very little heat in the form of IR that can cause damage to sensitive objects or fabrics. Wasted energy is dispersed as heat through the base of the LED.
Slow failure: LEDs mostly fail by dimming over time, rather than the abrupt failure of incandescent bulbs.[103]
Lifetime: LEDs can have a relatively long useful life. One report estimates 35,000 to 50,000 hours of useful life, though time to complete failure may be longer.[104] Fluorescent tubes typically are rated at about 10,000 to 15,000 hours, depending partly on the conditions of use, and incandescent light bulbs at 1,000 to 2,000 hours. Several DOE demonstrations have shown that reduced maintenance costs from this extended lifetime, rather than energy savings, is the primary factor in determining the payback period for an LED product.[105]
Shock resistance: LEDs, being solid-state components, are difficult to damage with external shock, unlike fluorescent and incandescent bulbs, which are fragile.
Focus: The solid package of the LED can be designed to focus its light. Incandescent and fluorescent sources often require an external reflector to collect light and direct it in a usable manner. For larger LED packages total internal reflection (TIR) lenses are often used to the same effect. However, when large quantities of light is needed many light sources are usually deployed, which are difficult to focus or collimate towards the same target.
- Advantages of LED lighting
LED's talk about LCD now.......
Sent from my GT-I9450
InvalidUsername said:
- Advantages of LED lighting
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While interesting, I don't think it is applicable, those are all talking lighting, not displays.
...wait a tic, are you just being a smartass... :silly:
There aren't LED screens, it is a marketing gimmick.
I wouldn't want a LED screen on a phone. You have to hold that against your face all the time, you might get LED poisoning.
This forums seems to attract the worst threads.
In before lock!
Hi,
I'm planning to get the 64GB Blue Nexus 6 and i have a few questions before i buy:
I heard that the AMOLED Screen have some issues like burns on the screen. Is that true?
Also i heard about "pink" issues with brightness. This is true also?
Svid said:
Hi,
I'm planning to get the 64GB Blue Nexus 6 and i have a few questions before i buy:
I heard that the AMOLED Screen have some issues like burns on the screen. Is that true?
Also i heard about "pink" issues with brightness. This is true also?
Click to expand...
Click to collapse
Both are true.. But I don't have any issues on my device..
Danish2980 said:
Both are true.. But I don't have any issues on my device..
Click to expand...
Click to collapse
I saw some videos on youtube and they said inverting colors from time to time for a certin amount of time helps. This is true?
Svid said:
I saw some videos on youtube and they said inverting colors from time to time for a certin amount of time helps. This is true?
Click to expand...
Click to collapse
Also true..
Svid said:
Hi,
I'm planning to get the 64GB Blue Nexus 6 and i have a few questions before i buy:
I heard that the AMOLED Screen have some issues like burns on the screen. Is that true?
Also i heard about "pink" issues with brightness. This is true also?
Click to expand...
Click to collapse
The at&t variant I personally own never gave me these issues. I have read the pink tint issues were associated with the adaptive /automatic brightness enabled?! Yet, on mine I saw no pink with it enabled or disabled.
And there are videos on YT showing burn in. It is basically the soft keys at the bottom. Triangle, circle, and the square are the culprits. But again no issues for me.
Now the very 1st day my phone did a random reboot on me - twice! But, as soon as I unlocked bootloader, rooted it, and used a custom recovery the reboots never surfaced again! Go figure?! And the nexus 6 is definately the fastest performing phone I owned yet
Svid said:
Hi,
I'm planning to get the 64GB Blue Nexus 6 and i have a few questions before i buy:
I heard that the AMOLED Screen have some issues like burns on the screen. Is that true?
Also i heard about "pink" issues with brightness. This is true also?
Click to expand...
Click to collapse
AMOLED's can all have that issue, but I personally have never seen it happen (I have had a gnex for almost 2 years which used AMOLED and doesn't have burn-in). The pink "issue" isn't really an issue, google allowed the screen brightness to go extremely dark on the N6. This causes the screen to take on a pink tint simply due to the way amoled's function at that low a brightness. The screen does have a warmer hue to it as well because it is AMOLED, but you can use a custom kernel to tweak RGB values and give the screen a cooler tint. Hope that helps
gambit07 said:
AMOLED's can all have that issue, but I personally have never seen it happen (I have had a gnex for almost 2 years which used AMOLED and doesn't have burn-in). The pink "issue" isn't really an issue, google allowed the screen brightness to go extremely dark on the N6. This causes the screen to take on a pink tint simply due to the way amoled's function at that low a brightness. The screen does have a warmer hue to it as well because it is AMOLED, but you can use a custom kernel to tweak RGB values and give the screen a cooler tint. Hope that helps
Click to expand...
Click to collapse
Thank you for that useful information mate.
So, all AMOLED's, regardless if it's the N6 or not, suffer from this issue?
Svid said:
Thank you for that useful information mate.
So, all AMOLED's, regardless if it's the N6 or not, suffer from this issue?
Click to expand...
Click to collapse
That is correct, all AMOLED's are susceptible to this because of the O in AMOLED, which stands for Organic. The organic compounds that are used in these screens are susceptible to burn in due to the fact that the organic compounds degrade with a lot of use. Of the RGB subpixels, Blue subpixels degrade quickest. However, the N6 uses a Pentile pixel arrangement. This has upsides and downsides, but it is actually an upside as far as this issue is concerned, because the Pentile layout contains less blue subpixels, so there is less susceptibility to burn in.
If you want to combat this issue further, you can use blacked out google apps, and use ROM's with blacked out system options, use a mostly black wallpaper, etc. This is because on an AMOLED screen when the screen is black, the pixels are not displaying any light and thus are not degrading at all. This should reduce your chances of running into the issue. It will also save battery life since the screen is not using as much energy. That is one of the upsides to AMOLED screens, along with the very dark blacks you get in movies and games for the same reason (pixels are not lighting at all). Like I said, I've used other AMOLED screens and not run into this problem as of yet, to my understanding it should take years before you start to see burn in even with normal use. Some people say they have issues right away but that has not been my experience.
All screens of any technology are correctly color calibrated at a given brightness and are very far off at extremes. With an LCD, it will generally be too blue at high brightness and not blue enough at low brightness. That is because the backlights are never a 6500K source. They are basically always bluer than standard.
The Note 4, to pick an AMOLED example, does not get red at very low brightness, but that is because it (according to others) has a higher minimum brightness. My screen takes on a red tint when in a dark room with adaptive brightness enabled if I have the brightness slider set below about 30%. I consider this a handy feature since I don't like the feeling of staring into a light bulb.
Above about 30%, or in a room with a light on, the screen stays normal for me.
I have not seen thecpink issue on my N6 at all.
gambit07 said:
That is correct, all AMOLED's are susceptible to this because of the O in AMOLED, which stands for Organic. The organic compounds that are used in these screens are susceptible to burn in due to the fact that the organic compounds degrade with a lot of use. Of the RGB subpixels, Blue subpixels degrade quickest. However, the N6 uses a Pentile pixel arrangement. This has upsides and downsides, but it is actually an upside as far as this issue is concerned, because the Pentile layout contains less blue subpixels, so there is less susceptibility to burn in.
If you want to combat this issue further, you can use blacked out google apps, and use ROM's with blacked out system options, use a mostly black wallpaper, etc. This is because on an AMOLED screen when the screen is black, the pixels are not displaying any light and thus are not degrading at all. This should reduce your chances of running into the issue. It will also save battery life since the screen is not using as much energy. That is one of the upsides to AMOLED screens, along with the very dark blacks you get in movies and games for the same reason (pixels are not lighting at all). Like I said, I've used other AMOLED screens and not run into this problem as of yet, to my understanding it should take years before you start to see burn in even with normal use. Some people say they have issues right away but that has not been my experience.
Click to expand...
Click to collapse
Not sure about the bottom paragraph, surely you mean inverted colours? Also If you use a mostly black wallpaper you're more likely go get burn in because the pixels around navigation buttons aren't on at all and are thus not degrading whilst the navigation buttons are fully on and are degrading.
Sent from my Nexus 6 using XDA Free mobile app
letom said:
Not sure about the bottom paragraph, surely you mean inverted colours? Also If you use a mostly black wallpaper you're more likely go get burn in because the pixels around navigation buttons aren't on at all and are thus not degrading whilst the navigation buttons are fully on and are degrading.
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
Inverted, blacked out, I don't think there's a difference. The button icons themselves will eventually burn in because they are almost always on unless you opt for pie like controls, but like I said that should be over a span of years. A black background will keep everything else from wearing faster though and should give you better battery performance.
I have had the phone for a week now and have not seen either of these issues. I do keep my screen fairly dim, like minimum brightness PLUS a screen dimmer for the nights and early mornings. I do not see any pink what so ever with adaptive brightness off and the minimum setting for brightness. I only turn the screen up when outdoors. I don't know I just find the screen really bright while indoors and I would assume burn in would be more susceptible with higher brightness
So i can safely buy the device right?
Anyway i have to order the phone overseas (No 64GB avalible in my country and the price tag too high anyway).
Before I installed UV screen protector I noticed this stripe under UV lamp. Is that normal?
I saw that too, when installing the Whitestone Dome, and have not noticed any problems.
I noticed the same thing when installing my whitestone... assuming it's normal, my display is good under normal circumstances as far as I can tell
Sent from my SM-N960U1 using Tapatalk
it's basically the same shape that shown on my screen whenever the screen display dark color contrasts (but not true blacks)...that seems to resemble a burn-in.
Hi everyone, I don't think this is anything to worry about. I found the same blob on my Huawei Mate 20 Pro whilst I was trying to cure my green screen.
I then checked my partners s9 and it also had the same blob so it's definitely not screen burn.
I was told it's the loca glue used in the manufacturing process. Same thing on the Pixel 3 XL's and Note 8's. I wouldn't worry about it.
KevAngelo14 said:
it's basically the same shape that shown on my screen whenever the screen display dark color contrasts (but not true blacks)...that seems to resemble a burn-in.
Click to expand...
Click to collapse
Theres almost no way it's a burn in. I have this on my brand new unit that i noticed on the 1st day of use before installing my Whitestone. At this point the screen and only been on for about 20 mins. I know this because my phone as of now only has 31 charging cycles on it.
Sent from my SM-N960F using Tapatalk
Yup normal. However I seen a user on here who had it discolor and could be seen under normal use.
Been looking into it why I'm at work. It is an optical adhesive and perfectly normal. However from what I'm guessing Samsung let a few out with bad adhesive and that's what causesd his what he thought was burn in.
But normal to see it under uv under certain wave length's. If you see it without UV light then that is an issue. Or if you have your display on and can see the outline of it.
Same Norland adhesive we use at my work on some of our optical stuff.
Just a heads up. The light they give you with the dome is not the right wavelength for the adhesive they use. Final cure you will wanna do 2 min total for each top and bottom. If not the adhesive will still be green "not fully cured" the adhesive they use is on the cheeper end of the spectrum but fine for what it is being used for. That much adhesive in a top of the line product would be around $30. But I used it on my. Did a final cure of 2 min top and bottom. Checked it out under a high power microscope and it was fully cured. No issues with it lifting.
bignazpwns said:
Yup normal. However I seen a user on here who had it discolor and could be seen under normal use.
Been looking into it why I'm at work. It is an optical adhesive and perfectly normal. However from what I'm guessing Samsung let a few out with bad adhesive and that's what causesd his what he thought was burn in.
But normal to see it under uv under certain wave length's. If you see it without UV light then that is an issue. Or if you have your display on and can see the outline of it.
Same Norland adhesive we use at my work on some of our optical stuff.
Just a heads up. The light they give you with the dome is not the right wavelength for the adhesive they use. Final cure you will wanna do 2 min total for each top and bottom. If not the adhesive will still be green "not fully cured" the adhesive they use is on the cheeper end of the spectrum but fine for what it is being used for. That much adhesive in a top of the line product would be around $30. But I used it on my. Did a final cure of 2 min top and bottom. Checked it out under a high power microscope and it was fully cured. No issues with it lifting.
Click to expand...
Click to collapse
So you've been meaning to say that if we see this without UV light (which I see in my device when I'm in a dim room and I let my phone show dark grey to dark green colors), then it's not normal? Then if it's Samsung fault, would they fix it in a repair center (hopefully free of charge)?
Im just quite pissed off for this since I came from S9+ and I havent had any issues with the screen. Couldn't they be at least consistent with things like this given the fact the display is one of the most selling point of this phone?
p.s. and oh, just to add, what's appearing on mine is not just some rectangular flat discoloration on my screen, it has dark polkadots lined in a grid inside just like many others have been complaining about.
KevAngelo14 said:
So you've been meaning to say that if we see this without UV light (which I see in my device when I'm in a dim room and I let my phone show dark grey to dark green colors), then it's not normal? Then if it's Samsung fault, would they fix it in a repair center (hopefully free of charge)?
Im just quite pissed off for this since I came from S9+ and I havent had any issues with the screen. Couldn't they be at least consistent with things like this given the fact the display is one of the most selling point of this phone?
p.s. and oh, just to add, what's appearing on mine is not just some rectangular flat discoloration on my screen, it has dark polkadots lined in a grid inside just like many others have been complaining about.
Click to expand...
Click to collapse
Try to post picture of it.
KastrO_on said:
Before I installed UV screen protector I noticed this stripe under UV lamp. Is that normal?
Click to expand...
Click to collapse
note 8 had that too.
I saw the same when installing my dome glass. No issues with the display.
My 3 month old Note 9
Can see green polka dot kind of burn in during normal use. Phone is only 3 months old. I take care of my phone religiously. Just noticed a few days ago and now it's all I see.
imgur.com/gallery/2vYEsr8