XHP50.3 HD, XHP50.3 HI, XHP70.3

From the Cree newsletter:
Next up is an extension to the XLamp XHP50 and XHP70 family of LEDs. The XLamp XHP50.3 HI is a flat-lens version of the XHP50.3 HD and can deliver double the cd/lm of previous XHP50 parts in narrow-beam applications. The XHP50.3 HD and XHP70.3 HD deliver improved color-over-angle performance as well as higher on-axis intensity. The new members of the XHP family are here.
https://cree-led.com/products/xhp-family-leds/xhp-leds

Isn’t that what the Osram is doing already?

Yea that XHP50 Hi looks like it could be legit. There are 90 CRI versions and a bunch of color temps. Knowing cree the good ones may only exist on paper. A 4500k or 5000k 90cri 3V version would be mighty popular around here.

Already discussed:

When will these end up in lights?

XHP50.3-Hi (6500k) LED is one of the LED variants listed currently available for the Pioneman K36 flashlight, shown below

I’m getting that and a M21F SFT40 to compare. Should be interesting.

Yes, but a tactical, pocketable version without a “hold 3 seconds for memory” would be nice.

Pioneman K36 and Convoy M21F look quite similar, their button switch & USB charging port cover look exactly the same, the body design are slightly different (different knurling pattern of the body tube and tailcap). The M21F has a very slightly larger head compared to the K36.

They use the same UI (Convoy’s side-switch UI?)

Yeah they look really similar, it says the UI is the same. Assuming the same reflector so it will be a good comparison. M21F is here but the K36 is still in customs, hopefully later this week.

This was smaller than I expected compared to the M21F, but here’s my comparison shots

1 Thank

Pioneman K36, is the UI really 3 clicks to strobe?

yes, from on or off 3 clicks will strobe.

Thanks for the reply, that is a shame. I may pickup the K35.

With HI emitter being used here their intention should be getting that candela gain as much as possible, but at the same they gave it an OP reflector, so do they actually want throw or flood? What a strange combination isn’t it.

My guess for using an OP reflector for XHP50.3-Hi is more due to the XHP50.3-Hi consists of 4 squares of LEDs.

Although I’m unable to try it, I think that using an SMO reflector with the XHP50.3-Hi LED will produce a “window” pattern when used at closer range (not sure if it will still have “window” pattern at longer distance).

So rather than people complaining with a “window” pattern for center hotspot, the logical choice is to use a lightly orange peel reflector.

Contrary to what many people think, based on my own experiences, an OP reflector does not significantly reduce beam throw distance (there is a decrease, but an OP reflector definitely does NOT make a beam “floody” — basically, the OP reflector just smoothens out inconsistencies in the beam. The center hotspot will not be as well-defined when using an SMO reflector compared to an OP reflector).

The Sofirn C8L flashlight also uses XHP50.3-Hi LED, and that flashlight also uses an OP reflector. I have not yet had the chance to test other flashlights with XHP50.3-Hi LEDs yet, only the K36 and C8L at this time.

Hello,

One question that I have is the difference between some of the new XHP 70.3 HI emitters, compared to XHP70.3 regular emitters but dedomed. I know that many people are doing dedoming of XHP50 and XHP70 emitters. The result is that the light is more concentrated so the flashlight becomes more throwy. It is also that the tint turns a bit warmer.

But now that XHP70.3 HI emitter is available, I want to ask what is the benefit of dedome of XHP70.3 or other emitters compared to using HI version?

Thank you

Well, usually dedoming allows to make the LED less green (+ lowering the CCT as you said), which can be desirable since many LEDs, especially high CRI LEDs from Cree, are often green tinted, that said with the .3 XHP it doesn’t seem to do this very much.

An advantage may be simply availability, which is better for the domed variants.

A disadvantage, aside from the additional work of slicing the LED, is that the HI flat lens is textured, which according to Cree increase light extraction compared to a smooth flat lens (as it would be once sliced), but the difference is probably small.

Edit : actually I might have read that wrong, not sure it’s the silicone lens that is textured.

Thank you for comment. Do you mean that XHP_0.3 emitters are less green? I do not have many XHP flashlight so it is difficult to compare for me.

For example if I have a 5000K XHP dedomed, it will become something like 4500K with less green, which will be better tint than 5000K XHP HI? Since it is easy to buy domed versions, than it seems like de-dome is a good option to remove tint and get the part we want.

It is interesting how the texture can improve performance. The CREE engineers definitely working hard! Thank you.

The 4000k 70.3 HI from Convoy is 5D tint, which has a chance of being below BBL. The others from Convoy will all be above bbl.