670nm deep red led helps eyesight

Hi
I am building a quad S11 mainly for spotting wildlife just not sure on the led I should use. Is the higher the nm number the better?

Cutter’s has three options that I can see.

  1. XP-E2 Cree Far Red 730nm “XPEBFR-L1-0000-00B01” here
  2. XP-E2 Cree Far Red 730nm “XPEBFR-L1-0000-00901” here
  3. XPG-3 Cree Deep Red 660nm “XPGDPR-L1-0000-00G01” here

MTN has this driver FET + 7135 Driver - 22mm - MTN-22DDm here

thanks for any help

no, 730nm is very dim, not recommended

620nm is much brighter, I recommend that

Ok thanks I will try and find a 620nm.

thx

btw, I suggest you get some green LEDs to try also
I can see much better with Green than Red

I was thinking about the nocturnal animals eyes thinking red would be better for them?
I do have a M21B with an osram KP CSLPM1.F1 green light coming.
I will try them both out.

thx

> I was thinking about the nocturnal animals eyes thinking red would be better for them?

if you google red vs green hunting lights, you will learn green is better for seeing animals.

red is better for humans who do astronomy

deer, coyote, boars, dont have good red nor green vision, but green is better for humans to see farther, and to see the fur on the animal

I do not feel comfortable using red, there is something weird about it, for my eyes. With green I feel very comfortable. I would not use red for spotting game, I would only use red if I was doing astronomy.

Sounds like this. https://en.wikipedia.org/wiki/Ganzfeld_experiment

While researching the heath benefits I found this site that might be helpful for others. http://valtsus.blogspot.com/2017/05/the-therapeutic-effects-of-red-and-near.html

Apologies for dragging up an old thread, but just spent a few hours going through all 10 pages only to find the Sofirn C01R and C01 are both sold out/out of stock. Is there another recommendation for this application?

https://intl-outdoor.com/

Deep red emitters are available on various hanklights.

you can buy a ready made red light on kaidomain
note that is a dropin, you have the option to buy the host and battery at that link also…

also search amazon for “”red light therapy”:https://www.amazon.com/s?k=red+light+therapy&crid=2MJNQTGBCW1Q&sprefix=red+light+%2Caps%2C229”

other options include building your own red light, or hiring someone like skylumen to do it for you

Amazing, thank you both so much!

here are several in the deep red range. I love mine (D4V2)

Hi Guys,

Just saw news on red light therapy today at medical news. No real details on exactly what would supply the therapy beyond the implication that fat cat pharma will develop something that will no doubt cost a fortune. I checked amazon etc and there are literally thousands scam listing making false claims. There is serious cause for concern when ignorance is bliss so it was great finding this sight.

This page has a great insight into potential issues to beware of The Dangers of Infrared Light (IR) in Red Light Therapy (RLT) | by John Iovine | The Startup | Medium
he also has a book “Living Younger Longer with Red Light Therapy” which might be worth reading. He makes sense in stating the IR frequency is dangerous within red lights but we can use a #5 sunglass to filter just the IR.

The Dangers of Infrared Light (IR) in Red Light Therapy (RLT)
Users of RLT don’t want to develop cataracts in 20 years from IR exposure.
John Iovine

I wont post the page here but its worth a look regards RLT and I would be interested to see opinions anyone might have? RLT seems like a great idea.
If you google “deep red light, with a wavelength of 670 nanometers” it will show the medical news and other articles from the science community.

Just closing eyes should filter out IR, shouldn’t it?

That would be handy :slight_smile:

BTW, the 670 nm C01 is sold out at sofirnlight.com, but still available at AE. It’s useable with the above mentioned technique, eye lids will spread the narrow beam.

from Wikedpedia,
In the United States, cataracts occur in 68% of those over the age of 80 years.

Radiation:
Cataracts can arise as an effect of exposure to various types of radiation.
X-rays, one form of ionizing radiation;
Ultraviolet light, specifically UVB;
Microwaves, a type of non-ionizing radiation;

Mr. Lovine’s article is concerned about the 840nm region (microwave) causing damage and thermal cataracts (basically cooking the lens).

i can’t remember who it was earlier in this thread, but one of the forum members suggested closing the eyelids would still provide RLT benefits.

Im skeptical about that claim. The author is not a medical professional, and his comments are about Far IR, which is not what we get from Visible Red Light, that is the topic of discussion in this thread.

here is a alterative viewpoint:

Near Infrared (NIR) Light Therapy

“NIR light is safe but effective. Within near-infrared wavelengths, light can penetrate eyes at maximal level, but absorption of light by cornea and lens is at minimal level (approximately 10%)”

also imo
670nm Red is not the only effective wavelength
there are other studies that have shown benefits from other frequencies

He seems pretty smart on the subject and certainly enough to make me wary about what I shine in my eyes. I’m sure the stuff being sold on amazon et al dont really care what other light RLT lamps emit. being old school we were always taught no, no, no the eyes are very sensitive. Then you go to the optician and the first thing he does is shine a blinding white light in your eyes!!
There doesnt seem to be any scientific data on RLT safety in any specific units that I can see even on the forum.

I wonder if there is a cheap meter we can but to check the light on various things like red light torches? The new fad for LEDs in home lighting (now compulsory in UK) seems a bit suspect to me. It just doesnt feel right. The old incandescent bulbs whatever brightness just felt “right” whatever right is, or OK. Then we had tungsten, again doesnt feel right! In my pad the LED lights are awful light. Maybe if they had some kinda shade………
Usually gut instincts tend to work out quite good. Any views?

I think the Red Flag would be if the light produces any sensation of Heat on the target…

my readings say Red Light is very safe

I have not seen any info of concern, for the light frequencies we can see. The guy you linked to is talking about Far Infra Red, way above 1000nm

not relevant to the 620 to 730nm range that l use