Looks like Optisolis V4 COBs have arrived.

Flashlight Modding and DIY Parts
1

I've been cataloguing all high-cri COBs, and noticed V4 of the Optisolis model #'s showing up. Worth noting that only the V3 has the Optisolis branding, but there is a R9580 variant of the V4 model numbers that share all the same specs, but are 8-15% more efficient.

Their data sheets show the same color rendering values, so I do wonder if it's enough to keep up with the value proposition of the Bridgelux Thrive? At least on paper the Thrive beats out the Optisolis in color rendering, are more efficient, and cheaper, resulting in nearly 4x the lumens per dollar.

Thoughts? Anyone eagerly awaiting the V4's, or have people generally moved on?

Brand Model Price/ea Watts lm lm/W lm/$ Size CRI Nom mA Vf
Nichia NFCWJ084B-V2 $30.65 23.5 2,650 113 86 24.0 95 670 35.0
Nichia NFCWJ096B-V2 $30.65 26.6 3,010 113 98 24.0 95 760 35.0
Nichia NFCWJ108B-V2 $14.77 30.0 3,410 114 231 24.0 98 35.0
Nichia NFCWJ108B-V2 $30.65 30.1 3,410 113 111 24.0 95 860 35.0
Nichia NFCWJ108B-V3 (Optisolis) $16.64 28.9 2,280 79 137 24.0 94 860 33.6
Nichia NFCWJ108B-V3 (Optisolis) $16.64 18.8 1,720 91 103 24.0 95 540 34.8
Nichia NFCWJ108B-V4 30.0 3,660 122 - 24.0 98 860 34.9
Nichia NFCWJ120B-V2 $30.65 37.1 4,120 111 134 24.0 95 1050 35.3
Nichia NFCWJ130B-V4 79.6 5,200 65 - 24.0 98 1150 38.5
Nichia NFCWL036B-V2 $14.08 9.0 1,040 115 74 19.0 95 260 34.7
Nichia NFCWL036B-V3 (Optisolis) $9.93 8.7 690 79 69 19.0 94 260 33.3
Nichia NFCWL036B-V3 (Optisolis) $9.93 6.3 560 89 56 19.0 95 180 34.8
Nichia NFCWL036B-V4 9.0 1,110 123 - 19.0 98 260 34.6
Nichia NFCWL048B-V2 $6.94 12.5 1,790 143 258 19.0 95 360 35.0
Nichia NFCWL048B-V2 $14.08 12.5 1,460 117 104 19.0 95 350 34.8
Nichia NFCWL060B-V2 $8.61 16.0 1,830 114 213 19.0 98 34.9
Nichia NFCWL060B-V2 $14.08 16.1 1,830 114 130 19.0 95 460 34.9
Nichia NFCWL060B-V3 (Optisolis) $11.53 15.4 1,230 80 107 19.0 94 460 33.5
Nichia NFCWL060B-V3 (Optisolis) $11.53 10.4 960 92 83 19.0 95 300 34.8
Nichia NFCWL060B-V4 16.0 1,980 124 - 19.0 98 460 34.8
Nichia NFCWL072B-V2 $14.08 18.8 2,130 113 151 19.0 95 540 34.8
Nichia NFCWS024B-V3 (Optisolis) $6.32 4.2 360 86 57 15.0 94 120 34.8
Nichia NFDWJ130B-V2 $30.65 44.4 4,850 109 158 24.0 95 1150 38.6
Nichia NFDWJ130B-V3 (Optisolis) $23.67 42.7 3,140 74 133 24.0 94 1150 37.1
Nichia NFDWJ130B-V3 (Optisolis) $23.67 22.5 2,040 91 86 24.0 95 600 37.5
Nichia NFDWJ130B-V4 44.3 4,200 95 - 24.0 98 1150 38.5
Nichia NFEWH306B-V2 $77.35 113.0 8,320 74 108 38.0 98 1400 51.9
Nichia NJCWS024Z-V1 $4.30 49.2 1,710 35 398 15.0 98 500 36.0
Nichia NTCWS024B-V2 21.5 1,110 52 - 19.0 98 260 34.6
Nichia NTCWS024B-V2 $6.04 4.7 530 112 88 15.0 95 135 34.9
Nichia NTCWS024B-V2 11.1 560 50 - 15.0 98 135 34.9
Nichia NTCWS024B-V3 (Optisolis) $4.30 4.5 365 81 85 15.0 95 135 33.6
Nichia NTCWS024B-V4 4.7 560 119 - 15.0 98 135 34.9
Nichia NTCWT012B-V2 $6.04 2.5 275 112 46 15.0 95 70 35.0
Nichia NVCWL024Z-V1 $53.97 115.0 4,420 38 82 19.0 98 1200 35.5
Nichia NVEWJ048Z-V1 $105.23 168.0 8,720 52 83 24.0 98 1800 47.0
Nichia NVEWL016Z-V1 $18.53 76.8 2,900 38 157 19.0 98 600 47.0
Nichia NVNWS007Z-V1 $12.47 33.6 1,240 37 99 15.0 98 580 20.6
Nichia NTCWS024B-V2 $3.57 4.7 530 113 148 15.0 98 34.9
2

These are not Optisolis. They have high CRI but they don’t have the smooth spectrum of Optisolis.

ADDED:
Could you please tell where do you see Thrive being more efficient?

I took a quick look, took the first v4 datasheet (turned out to be NFCWJ108B-V4). Well, maybe not the best choice because it’s 14.6 mm LES and Thrive doesn’t have an exact match.
So I took both 13 and 18 mm ones.
They both offer 116 lm/W when driven at the rated current at 25°C. Also, the rating power is quite low, 0.041 W/mm² and 0.040 W/mm² respectively.
NFCWJ108B-V4 offers 133 lm/W in cold white, also at 25°C, when driven slightly harder - 0.045 W/mm².
NFCWJ108B-V4 offers 122 lm/W in warm white, also at 25°C, when driven slightly harder - 0.045 W/mm².

3

I’m confused.
I used to think that Optisolis had different CCTs of its emitters and a very smooth spectrum.
When I see a press release for the COBs, they also shore those nice spectrograms. But when I open a datasheet I only see regular spectrum with single CCT with a regular cyan hole.

So V4 does’t seem worse than V3, simply more efficient. But Optisolis COB seems to have worse spectrum than Optisolis SMD.
Am I missing something?