Uses for Color Flashlight Lenses
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- Опубликовано: 3 апр 2017
- The tactical and practical uses for colored flashlight lenses explained. Does the blue lens actually help detect blood? Find out here! Featuring the original "tactical flashlight" the Fulton MX-991/U.
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Blue light also lets you know whats on sale.
Nice joke lol
I understood that reference.
Nailed it. Absolutely crushed it
Old school comment love it.
I’m a year late but you still win.
The reason the LED and incandescents lights behave through the light filters is that like sunlight, the incandescent light is made up of all colors of light to give you white. You can separate all the colors through a prism and it will project a rainbow that you can focus onto a sheet of paper. Where the white LED is projecting one or sometimes 2 wavelengths of light so the same prism will refract a band of white and in addition sometimes a band of blue light.
Red is for map reading and stake out , Blue is for tracking blood , Yellow is for Fog , Green is for Rain and it cant be picked up by Night Vision Google's. White is for diming and Clear is for brightning. Military hospital areas are painted Green. So a Green Light maybe able to pick up blood and make it appear yellow.
The light whatever the color is picked up by a night vision
I believe the white filter is for signaling
However a red light will not let you see colours on a map. You can use white light but cover the lense with tape and poke a little hole through it so only a little light comes out
Wrong.
Red Light is for maintaining your eye's night vision.
Blue is used for Map Reading and to Blind someone better.
Green doesn't disturb animals so it's good for hunting.
@@britishbastard6561 Or buy a flashlight that has a moonlight mode under 1 lumen. There arr some with only 0.1 lumen. On some armytek light you can even chose between 2 or 3 different moonlight settings.
I'm from Brazil. I discovered that blue filter has an interesting effect when used to read road maps published in my country: main roads and state border lines are highlighted, while secondary and unpaved roads simply disappear. Very useful to "clean" unnecessary information when desired.
My 5 year old grandson has a fear of the dark when he goes to bed, we got all sorts of night lights and glow plugs. None worked very well, until we got one on Amazon that could do warm white, blue, and green. He took to green Straight away, and has few problems going to bed now.
Would also point out that the colored lenses have applications for marine and railway use too, and that some makers of military flashlights also provided identical models for use by railroad workers, particularly in countries where the railroads were nationalized and basically just another division of the government. The coolest ones, at least in my opinion, were the ones that had the colored lenses built in and you selected which one you wanted by moving selector knobs or levers to move the lenses in front of the light.
I've seen both oil-burning and electric versions from several countries, but the ones I see most often are the ones coming out of eastern Europe and a lot of ex-Soviet items being sold off as surplus or collectibles.
You are right. I have flashlight made in 80's by PIAL-Legrand that uses a motorcycle battery as a power source. It has a colored filters set: red, orange, green and crystal. Filters are square with sides measuring 15 centimeters.
I saw this model by the first time while a candidate to Navy Academy. The sergeant that was distributing the formularies to candidates had a dozen of these in a furniture behind his table.
Best video I have found on the subject, I appreciate your work.
whos this
I miss those old things, my uncle had one before he died.
When I was really little, I put these on my pet dinosaur to help him walk in the dark.
Try stacking both red and blue lenses together on the fulton light with led bulb
thats my IR illuminator LOL
Simple and informative, much appreciated.
Awesome video thank so much! It helped me to get what the lenses were for.
Great video!
This is great ! Always wondered about the lense use.
Awesome vid well explained sir.
A neutral white LED would probably work better with the blue filter. Most LEDs are cool white.
Great video mate!
Thank you your video was very helpful
Really great video. Well done to you Sir. Very informative and useful. !!
Cool video. Very informative
Great overview, thanks!!!
I appreciate that! Back when I was enlisted, we only used the red lens. I never knew what the others were for until much later on in life. Thanks for watching and commenting!
Yup, remember it well. I still get paranoid with white light in the field even today camping w/family. Didn't even think that the other colors (Other than red) could be useful in different situations. Thanks again for the Vid!
Wiggy's Wilderness when I was in the navy we had red, amber, and blue lights on the ship that’s how I learned about the purpose for different lights.
Awesome taught me something I didn't know, to bad my old one got ruined however I have the mx 993 wand mentioned here
Thanks. I knew most of this Info but I still learned something
This was really informative and entertaining 🥰
Enjoyed the video. Subscribed.
It’s the spectrum of light aka Kelvin rating, incandescents are always soft 2700k , LEDs especially replacements for flashlights are almost always 4000k and up. True blood has an iridescent quality, the game tracker light you had with the blue LEDs are a black light, you can not get the same effect with putting a blue filter over incandescent or LED, kinda but it’s not the same. I really did like your video. Classic light and I loved the detail covering all the pros and cons of the lenses.
His led has a strong blueish tint what tells us his must be kind of 7500k or even 8000k.
Very informative video. Thank you for taking the time to break this all down.
0:17 your led has a very blueish tint. So it might have a color temperature of 7500-8000k. You should try the filters with a high CRI led and in neutral white at 4000-5000k. Neutral white in general is much better for nature. You see more colors and have more contrast with it.
Excellent Video, very interesting. The reason why the LED doesn't show up the blood and the incandescent does may be due to the fact that LED's are usually cool white and incandescents are warm white. This may have some bearing on the colour of the projected beam?
I have a WW2 German military torch which has 3 sliding filters; red, green and yellow. When I bought mine I saw some others that had a blue filter instead of the yellow.
The beam it projects is very broad, and not at all focused. Do you have any ideas why this is?
Kind Regards, James.
Red light won’t make blood pop because of the hemoglobin in red blood cells. The color will mask it or make it appear grayish. CSIs at a crime scene use UVlights with Special filter glasses which cause the blood to fluoresce making it or other bodily fluids stand out with blaring obviousness
Insects can't see red.
I have a engerizer** head lamp and it has red green n of coarse white...love that Think
Where did you buy Incandesce bulb?
So what's the story with the diffuser and the opaque filter?
FLA's have blue lights for when the doors are open, it's better than red when trying to find blood. When the doors are shut the white lights come on. My first time working on a FLA I so thrown off by the lights changing. The TM for the truck also has you check the seals for light leak, the seals are also used for the NBC rated HVAC system working right.
I've looked all over for a GREEN lens for my Army Angle Flashlight nothing, I'd also like one for my 3Cell Mag Lite too! These GREEN Lens are proving very tough to find.
I’m missing the defuser, white, blue, and extra red lenses but I have the green and amber one I got them with the light for a dollar at a garage sell
it works better with the bulb cause it also adds yellow light.
Should do a video testing different colored lights in smokey situations.
Green Light works for all most anything.
Great video. I have the same flashlight, would love to convert it to led. Do you have info on what to buy?
Any of the LED bulbs made for 2 D Cell flashlights will work.
You can get the proper conversion kit on fultons website
I w noticed that in the summertime the red lens works best for keeping bugs away. When I use the red one no bugs go after the light at all
Incandescent has the full color spectrum as well as tons of infrared im not sure the science behind why it makes the "blood" glow better but Incandescent bulbs will always serve a purpose i keep an incan with my sureifre m3 for the specific purpose of using the ir and blue filter
one thing i am wondering, with the LED bulb, what if u combined the blue and red lense together, would that work?
I think you need them to be separate to get the right definition between what you're looking for and the background colors so it'll kind of "pop" when you're looking at it. Any time I've put two lenses together, it just looks so dark that I can't make anything out, but it might work somewhat with a bright enough light source.
use them together for using night vision equipment
Thanks. For. Showing. This. To. Everyone. Ok. Thanks. 🙂🙂🙂
if you are hunting and shoot a deer in the dawn cannot you use a uv light to see blood?
is green allowed on military trainings ?
What about the opaque and diffuser lenses what are they for?
I believe the opaque lens was originally for signalling, although I never saw it used when I was in the military. No one has used flashlights for signalling in many many years. I've tried to use it for a few other things but the glow it casts isn't even as bright as a chem light, so I have yet to find a use for it. The diffuser lens on the other hand is actually pretty useful. We use that one for tracking. Diffused, incandescent lights (like a lantern) are the best light source you can have for tracking because it creates an evenly dispersed light pattern that makes it easier to pick up tracks in the dark. When we do Search and Rescue, we typically use lanterns with a reflector, and a flashlight that can cast a diffused light beam to back up the lantern. That way we can direct the light onto the tracking area to give the observer the best view of the tracks. That being said, these flashlights are a little outdated and we normally use something like a Maglite that has an adjustable light pattern.
I’ve used the amber color before for bugs. It sucks. I googled it and turns out that bugs cannot see red light. So when I’m in a watery area or buggy place I use the red lends because the bugs cannot see the red light
Incandescent bulbs throw out more infrared light we cannot perceive infrared light however through a lens it is enhanced and changes the spectrum of it where there is more incandescent light there is more infrared light
I wonder how UV would work on blood. They make one to detect bodily fluids like urine.
Anything that is red is meant to show up as black under blue light. the reason why it shows up better under the incandescent bulb with a blue filter then LED is due the fact a bigger spectrum of light comes out of the incandescent bulb. A white LED has three small peaks on it's spectrum as it's really a red, blue, and green, led each placed together. This is why white LED's are bad for your sleep, you get more blue light from them then with incandescent bulbs. However, the fact of those three peaks means the filter is working better, as it's better at blocking colors farther away from it's blue. That's why it's blue, so those green and red peaks have a hard time passing through. So you get a real blue light, not a blue tinted light like with incandescent. Same goes for the others. Ideally you'ed get a LED bulb of each colour, not a filter at all,
It would have been instructive for you to use both the red and blue filters (one on the other) on your LED?
Brad White
I guess i need both
So what do the opaque and diff-user lenses do?
The diffuser lens is to disperse light to make it more "ambient" like a lantern, which helps when you're tracking something in the dark. It lights a wider area than the other lenses. The opaque lens is a mystery. Some say it's to read a map at night without giving away your position, but with the original 5 lumen bulb it's pretty useless as I can't see anything with it even with the light pressed against the page. Some say it's for signalling, some say it's just to be used as a marker light. I haven't seen any official document that mentioned the opaque white lens or what they needed it for, and I haven't found it listed on any of the government contracts as a requirement, so even thought it may have been used for any of the things I just mentioned, it didn't seem to have an "official" use.
I don't see why a red light won't be great for seeing the red marking on the compass.
Hi, how could send email to you? We VASTFIRE lights also need your help to test them
on a flashlight like that no the blue lens would not work well with most led has to do with the light waves. now the streamlight sidewinder lights that are current military issue the lights are set to to specific wavelength that the blue light can show the difference between blood sweat ect
what about UV flashlights? are they good for blood tracking?
To be honest, I don't know. I know UV lights will cause certain body fluids to fluoresce, but I'm not sure how well it would work with blood. I know they're used on crime scenes, but I don't know how effective that would be in the field. UV lights are highly available now, so I would suspect if they worked better than anything else, someone would be selling one marketed towards hunters by now.
You should have poured your blood concoction onto the paper to eliminate the reflecting/deflecting properties of the plastic bag.
Probably already been said, but I'd imagine people prefer blue with night vision because it's the same for the night vision regardless of color, but harder to pick out with the naked eye if you're an observer.
Idk, never used a blue light or night vision.
With night vision you want infrared flashlights. They emit totally invisible light to the naked eye which requires night vision (infrared vision) equipment.
the filters are made from glass? or plastic
Plastic
you knoe I like the army flash light the hell with maglight
I'd rather have this light than a normal light. You can attach it to a pack or tac-vest so you won't have to hold it.
Streamlight has a modern equivalent called the sidewinder. It can also use multiple types of batteries. Their compact model is a great headlamp.
IF MY RIVETS ARE CORRODED OFF WHAT CAN I DO?
Unfortunately these lights are non-serviceable for the most part. If the contacts were corroded, you could clean those, but missing rivets probably can't be repaired. Depending on what the rivets are holding, you might be able to use epoxy, JB Weld, or Mighty Putty or something along those lines to hold the pieces together that were riveted.
Great for hunting, but I do not recommend the LED if you are currently serving in the Army. One of my Soldiers decided to upgrade his to a LED bulb and when we enforced red light discipline, his light was noticeably brighter, this giving his position away. It was so bad, I noticed it when he was reading his map inder his poncho! Maybe he bought the wrong type of bulb?
The LEDs come in different light intensities. The Fulton angle head flashlight came standard with a 5 lumen incandescent bulb, which is very dim by today's standards. We would typically swap them out with a 35 lumen LED (mostly because that was what was available at the base) and even that is pretty dim. Even a small Streamlight Stylus Pro flashlight is 90 lumens. It's possible to get 150 lumen LEDs and brighter that will fit, and that would probably too bright to effectively keep light discipline even with a colored filter. With that being said, I wasn't aware that these flashlights were still being issued, lol.
Wiggy's Wilderness oh ya they are and they still come of green.
Jessy Westfall night movement and you do not have the night vision googles what filter will you use to temporary light your path/way at the same time avoiding enemy detection ??
Pretty sure older bulbs produce a yellow light, while most LEDs produce a white light.
Yeah I'm trying to figure out how to fix my connectors near the switch but it still has the old orange bulb
What bout the ather 2 lens!??
The clear lens with the ridges is a light diffuser, it's made to defocus the light's beam so you get a more broad, ambient light. Very useful when tracking since it's more important to have a wide field of view more than a narrow, focused beam. The opaque white lens is sort of a mystery since I've never seen any "official" documentation about why the military wanted it included with the light. Some people have used it as a signal marker, since you can see that the light is on when it's in use, but it doesn't cast a beam, so you can signal someone who is close by with it, without worrying that it'll draw attention from an unwanted source. Some others have used it to read with in close quarters, like in the old military shelter half tents, when there would be two soldiers bunking together, that way you could have just barely enough light to read with (if you held the end of the light about an inch from what you're trying to read) without disturbing the other person in the tent. But again, I've never seen anything official about it's use and the whole time I was in the military, we didn't even know that it was a real lens, we just through it was there to protect your other lenses when they were in storage. If they wanted to come out with a modern version of this light, they could include a "frosted white" lens that would do the same thing the diffuser and the opaque white lenses do, only better. Many newer LED lanterns are coming with a frosted white globe just for that reason.
Thanks Wiggy. I think yours is the first video online to speak about lenses in flashlights!!!!! About the LED light not being able to show the red colour might be the " too much Lumens"... then i might be wrong again.
Greeting from Greece my friend.
What's the white one for?
The opaque, white lens has always been a mystery to me. It's not listed as being included on any of the original flashlights, and I can't find reference to it anywhere in any manual. Some people theorize it's for short range signaling or reading maps or something up close without actually casting a light, just a small glow. I've tried it for both of these and it's barely usable for either with the original bulb.
Wiggy's Wilderness Thank you very much for the reply. My father served in the Navy and had several of these flashlights and as a kid I'd play with them. Always wondered about that white lens. Lol
What about the white lens you set off to the side?
My guess is that it's put in there by the manufacturer to protect the other lenses. I've read the original orders the military put out for the contract and they never included any requirement for a white or opaque lens, and never wrote any instructions for using an opaque white lens. So it clearly wasn't there at the military's request, it had to be from the manufacturer.
Ok. Thanks!
👍
To answer your question about why the LED bulb Works differently from the incandescent bulb: the color of light is measured by its Kelvin temperature - this is how white balance works.
Orange (sodium vapor) street lamps = 2700 degrees Kelvin
Incandescent "warm white" is amber / yellow 3000-3300k
Correctly balanced daylight is 5400-5600k
"Cold white" for cloudy or xenon type light is 6000k
Your LED was either white or cold white , while the "warm white" incandescent is really yellow/amber.
What is the White lens for?
It's a mystery. I've looked at all the contracts that were written for the flashlight and there was never any mention of an opaque white lens being required or requested, so my theory is that it's there to keep the other lenses from getting scratched or from rattling around when stored in the flashlight.
It reduces the brightness for close up map reading
Thank you.
I've tried it for that, but even with the brighter LED in place of the original bulb, mine isn't bright enough to read with even if you put it right next to the page. I assumed it was for low-key signalling, but light signals are typically given brightly to be noticed, not covertly so it didn't make a lot of sense.
It's an sos blackout lense. The white lenses gives out enough light it can be seen by a person knowing where to look but doesn't give out a beam of traceable light. It is used for morse code that is the purpose of the code button just above the switch on these military angle necks.
If you were in the military you know exactly what Red is for. Unfortunately not stated in this video
I've been saying that for years about led lights, you cant discern colors correctly when looking at a wiring harness or get a true feel for what you are looking at. Not to good if you need to know what wire to fix if its red, black, or blue, lol
The LED bulbs are mostly yellow light, not pure white, so when mixed with a colored lens with an LED you don't get true colors, they are mixed.
When I was in the Army, blue was to signal you needed medical assistance (supposed to be Internationally recognized as such). Green (for Army and Marines) signal that you need help, like pinned down by a sniper, machine gun nest, artillery, or bunker. Red was only used for map reading behind a bush or some sort of concealment. The rest of the time no light.
I was in Panama, the jungles there were dark, even in the day in some areas. Any light at all was detectable. Our leaders had Night Observation Devices, we just followed them in a Ranger file at times like that.
I use red lights at night so I don't disrupt my cockatiel or my circadian rhythm. Red light encourages the production of melatonin, the sleep hormone that regulates your sleep cycles. It is also most healthy for the eyes, where the blue light spectrum is harmful to the eyes. That is why LED and artificial lighting can harm your eyes, causing cataracts, macular degeneration and suppression of melatonin, leading to cancer.
And the red lense if put next to the ground can make night crawlers come out of the ground
I'll have to try that out!
8:02 Nice K Mart Reference
I may comment late, but I think you made a mistake with the filter colours
lemme explain
You said blue is the hardest to detect and best when you want to stay hidden
That is outright false when the person looking for you has no Night vision equiptment, because blue light travels the furthest AND ALSO reacts best with the rods in our eyes at night time
its actually the most visible light of all the colours
However, when you got someone who is using a night vision goggle that no longer applies, as blue ius on the opposite side of the spectrum that NVGs are good at
they still will see the light, but its not as extreme as a red lamp would be
now talking about red:
it is the least energetic of the colours and has the longest wavelenght, this means it gets absorbed rather quickly in the enviroment and does not travel as far
its also on the opposide side of the spectrum for the rods in our eyes, so for humans its really short range and hard to see from far away
HOWEVER, NVGs LOVE red light, its right near the spectrum that has the most amplification for them (near infra-red)
thats why red light is no longer used on warships
Green light is perfect for the cones in our eyes, as the peak sensitivy they have is at aroound 500nm wavelenght (green light)
so we will see the most contrast and it will apear "brightest" for us
Amber: you seem to be right on that, havent looked into that colour yet.
Not all animals have a hard time seeing red.Deer can see the blue & green spectrum , but can't see red or orange correctly.The old belief was that they were color blind , but they can see blues & greens.Some animals can see all colors , including your cat that chases the red laser pointer.Theres a reason deer hunters can get away with wearing blaze orange , but you never see turkey hunters wearing it.All birds see in full color.
Dischromate mammals only have two types of cones that’s why they are red green color blind (sees blue and yellow) color blind humans are either red green color blind (most common) blue yellow(less common) and complete color blindness (rare). Cats don’t see red however what they do see is gray the light emitted by the laser which show up as a red dot to us appears as a brighter than the surrounding area gray dot and that is what they are tracking. For color blind animals the light that they see in the wavelength they are “blind” to shows up as grey meaning they can’t really differentiate anything other than light intensity ie dark grays vs light grays. If you have a laser pointer in the color range they can see it will be more obvious then a similarly intense gray light.
Sooooooo....night vision equipment is the least racist? Gotcha. LOL!