"Optisolis"tm, Nichia starts with ultra-high CRI leds (mid-power currently)

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djozz
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"Optisolis"tm, Nichia starts with ultra-high CRI leds (mid-power currently)

To prevent the cyan dip, the leds feature an especially developed 420nm blue led, so shorter wavelength than normal white leds (450nm) and longer than Yuji uses for their VTC series (400nm). For most flashlight use, these midpower leds are too weak, but perhaps they come out with a high power version some day Smile

Here's what they write about it:

 

 

Ultra-High CRI White LED (Optisolis™)

Optisolis™ achieves Ultra-High CRI with a spectrum that demonstrates the closest match to that of the standard illuminant. Optisolis™ is optimized for the general lighting market and is accomplished by using Nichia’s own blue chip and phosphor technology.

Manufacturers can utilize Optisolis™ and trust in a spectrum where all colors are reproduced to the color seen under a standard light. (Figure 1) Also, color rendering index has been significantly improved compared with the current products for general lighting. (Figure 2) Most importantly, since UV emission is essentially non-existent in the spectrum, the degradation of irradiated materials can be reduced dramatically compared to that of other light sources containing UV emission, including other market available LEDs.

Target applications include Museum and Art Gallery Lighting, where the highest CRI is preferred, but UV radiation and light sources can be detrimental. Additional applications could include Color Evaluation(e.g. painting, printing), Commercial Lighting (e.g. retail, etc.) or anywhere Ultra-High CRI is desired.

Figure 1.
Example of spectrum (TS 25°C) *1

 

Figure 2.
Example of Color Rendering Index (n=1) *1

 
*1 The above values are from measured samples and are for reference purposes only, these values are not guaranteed.

 

 

Product Type
Size
LxWxH
(mm)
Chromaticity Coordinate
Typ(x,y)
Luminous Intensity
Typ(cd)
Luminous Flux
Typ(lm)
Ra
Min
R9
Min
Forward Voltage
VF(V)
Directivity
2θ ½
(degree)
IF
(mA)
 
x
y
Typ
Max
Optisolis
NF2W757G-F1 (Rfa00,Rfc00) N
3×3×0.65 White 0.3447 0.3553   23 95 85 2.9 3.3 120 65
Optisolis
NF2L757G-F1 (Rfe00,Rff00,Rfg00,Rfh00) N
3×3×0.65 Warm White 0.4338 0.4030   24.1 95 80 2.76 3.3 120 65
                             
2 items totally
N=New Product   U=Under Development

*The photos might not exactly be the same as the original.
*Please refer to CIE 1931 chromaticity diagram.
*The 'Typ.' in the products page indicates typical value so that is not under guarantee.

Edited by: djozz on 02/01/2018 - 07:38
Phlogiston
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Cool. I’d be interested to see something like this in a 5mm through-hole package, like the ones Yuji used to sell.

clemence
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I kept this since last month because Nichia told me not to leak it until they’re announced. Finally it’s official!

The only problem is they’re still low powered at 25 – 30 lumens/pc

I exchanged the 219D sample offerings with this new LED Big Smile

- Clemence

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Interesting…

And, umm… Clemence? 219D? Care to elaborate?

Edit: sorry to thread jack. Just excited with all these new LEDs. Noticed the 219D listing though I haven’t digested it yet.

clemence
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gchart wrote:
Interesting…

And, umm… Clemence? 219D? Care to elaborate?

Yes 219D newer version of 219C, I have no interest on it. The max CRI is currently only Ra8000
If you’re going for performance upgrade from 219C it’s better to use 319A R8000. Unless tighter beam is what you’re after.

- Clemence

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Thumbs Up roger that
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Subscribed for now! 

Surface mount leds with about half the lumens of run-of-the-mill 5730s. I recently had the pleasure of reflowing a 100-pack of them on an electric induction stove. Time consuming task…

Question with regards to these is footprint and boards' availability. 

 

Cheers Smile

AEDe
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clemence, why 25-30 lm? Datasheet say that 24lm it is for 65 mA, but maximum curent is 150-200mA without overdrive.

clemence
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AEDe wrote:
clemence, why 25-30 lm? Datasheet say that 24lm it is for 65 mA, but maximum curent is 150-200mA without overdrive.

Officially 25-30lumens, since this is BLF, well…150lumens should be doable

- Clemence

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If it can do 150 lm, it’s interesting.
For a quad-led headlamp you don’t need more than 100 lm/LED really.

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Sample delivery scheduled in 2018 February 14. Will be available via the store in 3000K and 5000K only. Have no idea about the binning and quantity.

- Clemence

djozz
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I feel another virence order coming..

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Maybe enough violet for violet stuff to shine, we'll see. I wonder how actually good are modern leds in this regard (remember this sort of violet we see on our displays really isn't violet). 

 

Cheers 

ma tumba
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Will these fit the quad boards? I understand they are bigger than e21 but they are low power ones so gapless setup prrhaps?

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ma tumba wrote:
Will these fit the quad boards? I understand they are bigger than e21 but they are low power ones so gapless setup prrhaps?

I think so too. But can’t give any suggestions until I tested them. Being a low power LED (away from BLF habit) any non DTP boards should serve it well. It’s
overall footprint is symmetrical unlike Yuji but the the anode-cathode pads aren’t.

- Clemence

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UPDATE 180214:
3000K and 5000K “full spectrum” Optisolis depart from JPN to ID. Happy valentine everybody!

- Clemence

djozz
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ma tumba
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The optisolis spectrum begs for a UV bandpass filter. the rest of the spectrum is just BB without that dip at 480nm

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If heat output is low enough, you could design your own pcb and make a cob lantern out of it. It’d take an ungodly number of these led’s to get decent output and efficiency though. I’d want a thousand emitters, maybe a lot more, and there’s no way I’m reflowing that many emitters.

It seems unsuitable for light bulbs. Maybe it’d be okay for panel lights, and excellent for lighting film sets. Computer monitor backlighting may be a good application.

The low mode should be lower.

Reviews: Efan IMR18350 700mAh 10.5A, <a href="http://

The_Driver
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clemence wrote:
I kept this since last month because Nichia told me not to leak it until they’re announced. Finally it’s official!

The only problem is they’re still low powered at 25 – 30 lumens/pc

I exchanged the 219D sample offerings with this new LED Big Smile

- Clemence

This Graph doesn’t make sense to me. This new LED should have a lower color temperature. There is more red spectral content in relation to the blue peak compared to the other LEDs.