|
kn0wledge
This member has been banned
location:
Glasgow, UK
Gender: Male
 |  |  |  |  | Flashlight coloured lenses.
< on 3/31/2004 4:59 PM >
|  | | | Hi, I've read that some people use coloured lenses on their torches. Aside from yellow for fog and maybe red for night time, I can't think of any other use, especially for blue and green lenses. A little clarification would be greatly appreciated.
In Nagasaki they like bukkake. |
|
MacGyver
location:
St Paul, Minnesota
Gender: Male
"Someone go find me a paperclip, a D-cell battery, and a cheese grater"
| | Re: Flashlight coloured lenses.
<Reply # 1 on 3/31/2004 6:21 PM >
| | | | There has been some pretty good discussion about this, but I can't seem to find the thread now. Most of the better information has been compiled into the encyclopedia. See Flashlight Filter and gel.
Generally speaking, red will aid in preserving your eyes' ability to work with low light. blue and green can help your flashlight be less noticeable to people on the outside of a building with uncovered windows.
edit: removed bad information
[last edit 4/1/2004 3:18 AM by MacGyver - edited 2 times]
Like a fiend with his dope / a drunkard his wine / a man will have lust for the lure of the mine
"If you are not part of the solution, you are not dissolved in the solvent." |
|
kn0wledge
This member has been banned
location:
Glasgow, UK
Gender: Male
| | | | | Re: Flashlight coloured lenses.
<Reply # 2 on 3/31/2004 6:30 PM >
| | | | Excellent, thanks very much.
In Nagasaki they like bukkake. |
|
sympathy in chaos
location:
Chicago
Gender: Male
| | | | Re: Flashlight coloured lenses.
<Reply # 3 on 3/31/2004 10:14 PM >
| | | | Blue is good for tracking blood. Useful, if you're looking for a wounded deer.
|
|
orangeindiana
  
Noble Donor
location:
Texas
Gender: Male
Meh.
| | Re: Flashlight coloured lenses.
<Reply # 4 on 3/31/2004 11:42 PM >
| | | | Posted by MacGyver
Generally speaking, red will aid in preserving your eyes' ability to work with low light. blue and green can help your flashlight be less noticeable to people on the outside of a building with uncovered windows.
|
I think you slipped up -- remember that red is the lowest wavelength color in the visible spectrum and will make you the most unnoticeable. Green and blue tend to be the more visible ones, at least as far as my memory serves. I double checked with the encyclopedia entry though, and it says the same.
EDIT: Changed it to wavelength, not frequency.
[last edit 3/31/2004 11:53 PM by orangeindiana - edited 1 times]
|
|
clark
location:
Illinois
Gender: Male
| | | | Re: Flashlight coloured lenses.
<Reply # 5 on 3/31/2004 11:49 PM >
|  | | | /\ yes
lower wavelengths are less visible and virtually impossible to see at distance. red is the lowest visible, which is why the military uses it. any filter you can get will help though, because by filtering the photons any energy level/wavelength of light, it's going to be harder to see. filters are better than other light-dimming techniques because you can still maintain a consistent beam and light distribution.
/Brendan |
|
MacGyver
location:
St Paul, Minnesota
Gender: Male
"Someone go find me a paperclip, a D-cell battery, and a cheese grater"
| | Re: Flashlight coloured lenses.
<Reply # 6 on 4/1/2004 3:19 AM >
| | | | Oops, my bad. I was just scraping that off the top of my head. Green and blue lights are great for raves and pretending to be ghosts. Is that better 
Like a fiend with his dope / a drunkard his wine / a man will have lust for the lure of the mine
"If you are not part of the solution, you are not dissolved in the solvent." |
|
SteamPunk
location:
Sailing the seas of sleaze.
| | Re: Flashlight coloured lenses.
<Reply # 7 on 4/1/2004 3:23 AM >
|  | | | yeh most animals cannot see red light either......so i have heard, they only let use use red light when i briefly trained in the XXXXXXXXX XXXXX XXXXXX, as a cadet
I used to be with it, but then they changed what it was. Now what I'm with isn't it, and what's it seems weird and scary to me, and it'll happen to you, too! |
|
JimBoylan
location:
SouthEast Pennsylvania, U. S. of A.
Gender: Male
| | Re: Flashlight coloured lenses.
<Reply # 8 on 4/1/2004 2:58 PM >
| | | | Posted by perp
yeh most animals cannot see red light either......so i have heard |
What about bulls, which we might meet on a suburban exploration? Or are they angered by the motion of the matador's cape, intead of the red color?
|
|
kn0wledge
This member has been banned
location:
Glasgow, UK
Gender: Male
| | | | | Re: Flashlight coloured lenses.
<Reply # 9 on 4/1/2004 3:32 PM >
| | | | Yes, it's the motion of the cape that pisses them off. They can't see red. The red is just for the benefit of the spectators.
In Nagasaki they like bukkake. |
|
Lunis
location:
Durham Region
Gender: Male
Oh The Pleasures of Camo
| | Re: Flashlight coloured lenses.
<Reply # 10 on 4/1/2004 7:07 PM >
| | | | In My Experience Green is the most useless colour over all, i have never seen it being used nor have i used it myself... Blue came in handy this winter i found that a blue or a hyper-white (so white its blue) LED or lense is the closest to the moons light... In the winter its a little bit brighter b/c it has the snow to reflect off of.. Indoors you can't ever go wrong with red plus you have the added bonus of a creepy effect caused by red light (lol) as for yellow...i would say thats the same as green... And if you have the money and can afford a UV flash light they are great!!!
Keep Searching
Lunis
back from a long break |
|
Raider
Not Gay
location:
Whitby, Ontario, Canada
Gender: Male
<Intelligent>
| |  | | Re: Flashlight coloured lenses.
<Reply # 11 on 4/1/2004 8:15 PM >
| | | | I have an LED Flashlight and I've got some colored filters.. Red, Amber, Blue, The only problem is they kill a lot of my light. I mean the light is bright as hell when no filter is on like I mean bright.. When I put the red filter on the light is hugely reduced, I know this is going to happen but I mean the light just goes to shit with the red filters on. Could it be a shitty filter or what?
[13:54:15] <Agent_Skelly> Well, a friend of mine I had "benifits" with last fall was 420 lbs
[13:54:51] <Raider> Wow.... that is large.... now she doesn't crush you or anything? Not to be rude but seriously I'd suffocate
4:15:42] <bobtheallmighty> in my experiance there are very few things that are irregular when it comes to sex >_> |
|
SteamPunk
location:
Sailing the seas of sleaze.
| | Re: Flashlight coloured lenses.
<Reply # 12 on 4/1/2004 9:32 PM >
| | | | yeh maybe the light cannot get through the filter(hence filter), or refracts it or ??? wal mart (in canada), sells a cool led light combo, two red led's, or 1 whiteish blueish, or a kripton incandesent, takes 3 aaa cells, is a headlight (i.e. it goes on ya head) and retails for only 20$ cdn. the only problem is gettin' tha' incandesant bulb replaced, but it's hapened to me, i just took it back, and said ya' can't buy the bulbs, so they replaced the whole unit.
P.S. i hate wal-mart, they screw there employees, wont let them unionize, and well........you know the story, but there soooo cheap!!!! damn confliction!
I used to be with it, but then they changed what it was. Now what I'm with isn't it, and what's it seems weird and scary to me, and it'll happen to you, too! |
|
sympathy in chaos
location:
Chicago
Gender: Male
| | | | Re: Flashlight coloured lenses.
<Reply # 13 on 4/1/2004 11:33 PM >
| | | | Posted by R@!D3R
I have an LED Flashlight and I've got some colored filters.. Red, Amber, Blue, The only problem is they kill a lot of my light. I mean the light is bright as hell when no filter is on like I mean bright.. When I put the red filter on the light is hugely reduced, I know this is going to happen but I mean the light just goes to shit with the red filters on. Could it be a shitty filter or what?
|
Well, the light will be reduced with a filter no matter what. But different filters might be more efficient.
|
|
MacGyver
location:
St Paul, Minnesota
Gender: Male
"Someone go find me a paperclip, a D-cell battery, and a cheese grater"
| | Re: Flashlight coloured lenses.
<Reply # 14 on 4/2/2004 3:28 PM >
| | | | The problem is more due to the fact that LEDs don't put out much light to start with (compared to a halogen spotlight bulb, for example, which is designed to be filtered in this manner). White light is not lacking in color, but actually contains a pretty even mix of all the colors, which mix together to form white (For some reason, when you try this with paint, you get a lovely shade of puke). The way a filter works is by blocking all of the extra colors except the area of the spectrum around the color it is supposed to pass. "White" LEDs are a very blue hue of white, and there is a chance that the one in your light isn't capable of producing tons of red light. If this were the case, it would make sense that blocking all other colors of light would leave behind only a weak red beam.
Like a fiend with his dope / a drunkard his wine / a man will have lust for the lure of the mine
"If you are not part of the solution, you are not dissolved in the solvent." |
|
Servo
| | Re: Flashlight coloured lenses.
<Reply # 15 on 4/2/2004 5:32 PM >
| | | | If you want red light from an LED, you need a red LED. LEDs were really designed to be monochromatic (emit a single frequency of light); LEDs that emit a band of frequencies are a fairly recent development.
|
|
Jester
location:
Vancouver,B.C. Canada
Gender: Male
Always just out of sight...
| | | Re: Flashlight coloured lenses.
<Reply # 16 on 4/2/2004 6:12 PM >
| | | | The LED's that are meant to be red or whatever color are indeed far brighter than a white led with a filter cover...
It requires wisdom to understand wisdom: the music is nothing if the audience is deaf. |
|
sympathy in chaos
location:
Chicago
Gender: Male
| | | | Re: Flashlight coloured lenses.
<Reply # 17 on 4/2/2004 9:46 PM >
| | | | Posted by MacGyver
White light is not lacking in color, but actually contains a pretty even mix of all the colors, which mix together to form white (For some reason, when you try this with paint, you get a lovely shade of puke).
|
When you mix paint you're subtracting colors. With light, you're addding. I know, crappy explanation, it's been years since I took physics class.
|
|
Servo
| | Re: Flashlight coloured lenses.
<Reply # 18 on 4/2/2004 11:48 PM >
| | | | Posted by sympathyinchaos
When you mix paint you're subtracting colors. With light, you're addding. I know, crappy explanation, it's been years since I took physics class.
|
Mixing colored light produces white because each color of white contains a single frequency (or more properly, a band of frequences). You would need to actually have a light that emits all visible frequencies to get true "white" light, but due to the way the receptors in the eye work, mixing primary colors will give apparently white light.
With paint, you are mixing substances which each selectively absorb all but a certain frequency (or band of frequencies) of light. Thus mixing them produces on the average a substance which absorbs all frequencies of visible light. So you get something that looks grey (since nothing is perfectly absortive) or black.
Today's useless information was brought to you by the letters B, O, R, E and especially D.
[last edit 4/2/2004 11:49 PM by Servo - edited 1 times]
|
|
Indigenous Insurgent
location:
Milwaukee, WI
Gender: Male
Only the Truth is revolutionary
| |  | | Re: Flashlight coloured lenses.
<Reply # 19 on 4/3/2004 7:16 PM >
| | | | I don't think anyone has given this answer in regards to what blue lens filters are good for. The package for my flashlight lenses says that the blue is excellent for looking into water. Boat searches, scuba diving, etc. Just thought I'd throw that in.
[last edit 4/6/2004 5:08 AM by Indigenous Insurgent - edited 1 times]
Those who make peaceful change impossible will make violent revolution inevitable. |
|
Powered by AvBoard AvBoard version 1.5 alpha
Page Generated In: 93 ms
|
|
Ethics