TK, thanks for taking the time to show us how this D4S will become
I’ll wait for the final specs to be disclosed, but what was advanced make me like this light! It will be my first in 26650 format, so I’m curious about it!
BTW, those changes on the UI seem nice and, in some way, more practical than on the D4!
Let’s seen when it finally comes to public :sunglasses:
One thing I like about the 26650 format is the extra room it gives to spread out the LEDs on the MBPCB.
Although, I have never owned an 18650-based triple or quad, I have always been suspicious that the optics on some of those lights are covered a wee bit by the bezel. In practice, I doubt it makes much difference in output, but, hey, every little bit counts.
Maybe these are the LED choices.
On Int-Outdoor there are new Led-Boards and looking like fitting the D4S. Hi (4000, 5000, 6500K) und Nichia (5000 90CRI)
How difficult will it be to exchange these cyan coloured micro-size LEDs by red coloured ones? Are these LEDs hard to get or is it a standard LED that can be bought at Mouser, Arrow, Kaidomain and so on?
I wonder why Hank took cyan/blue LEDs. Red light would be better for maintaining oneself’s night vision ability and - IMHO - looks more fancy like those unaffordable Oveready BOSS lights. Green light would also be a better option for the human eye is most sensitive on the wavelenght of green light (~ 550nm). So, green light even at micro-lumen-level would be far better visible than blue light.
Maybe all this has something to to with John Rambo?
This looks great, longer high lumen runtimes than the D4 with more thermal mass. Makes me glad I haven’t snapped up a D4 or a different 26650 light yet so now I can say I need this for two reasons.
Why not vresto? A belt sheath will put it at hand at all times and you’ll forget it’s there til you need it. Kydex or Holstex can easily make a horizontal holster to carry it on the belt or the hem of pants or shorts, works very well.
Edit: Know any LEO? Ask them what they carry every day…… come on man, Cowboy Up!
I’ll chime in on this. It helps to have some quick facts about how blue light affects your circadian rhythms:
1. When the sun sets, you have primarily red light in the sky - staring at a bright computer screen at night will delay the onset of sleep. Unless you’re holding the blue LED’s up to your eyes at night they won’t do anything to your sleep patterns. You’re more likely to have disrupted sleep from looking at your phone in bed or otherwise not practicing good sleep hygiene.
2. Blue light doesn’t cause cancer. It’s in the visible spectrum - it doesn’t have the energy required to break DNA strands. UV light does this - this is what causes sunburns and cancer.
I spent a few minutes googling and it sounds like there is an increased risk of prostate cancer from some studies in people chronically exposed to blue light. What does this mean? What it’s NOT saying is that Blue light = cancer. What it IS saying is that if you chronically sleep-deprive yourself or otherwise are stressed over many years, you will have an increased risk of certain cancers. Even then, I didn’t see any actual odds ratio or relative risk or P-values given - so an article could say ‘increased risk’ even if the risk is only increased by .001%.
What I can say for certain is that there is an increased risk of cancer from smoking / tobacco use, chronic daily alcohol use, a family history of cancer, hep B / C, or chronic exposure to sunlight (to name a few).
For what it’s worth, my background is an M.S. in physiology with specialization in ovarian cancer research and I am finishing up my last year of medical school.
I bought a packet of SMD LED’s in like 8 different colors for less than $10 on ebay. Like 160 LED’s, seriously. Make it whatever color you fancy with a few minutes use of a hot air gun. Mix and match, create your own color spectrum, be imaginative…