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0 pointsSPICLK21mo ago0 comments

~100 lumens per watt is rather poor, especially given the cost. It's the same as a standard LED lightbulb, and that includes the miniature AC voltage converter.

150lm/w would make it at least a cut above domestic lightbulbs.

200lm/w would make it a premium product.

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antonok1mo ago

fwiw, LEDs with higher CRI will generally be less power efficient, so the premium category has a 3-way tradeoff between brightness, power, and color quality. It's common for high efficiency LED lightbulbs to be much worse at illuminating red objects.

SPICLK2OP1mo ago

True enough, although CREE's XT-E offers 140 lm/w at a CRI of 80 and a colour temp of 3000k.

I assume this product has not met any regulatory requirements, because selling a ~600W hot plate suspended at eye level cannot be legal.

These LEDs are just the ones found on imported LED strips. Adjustable colour temperature is a novelty that is not compatible with LED efficiency or lifetime.

camtarn1mo ago

CRI of 80 is not great. From my reading, you want CRI 90 if you want light that's pleasant to exist in.

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user_78321mo ago

> ~100 lumens per watt is rather poor

Is it, though? Most of the LEDs I've seen are very similar, and lower temp LEDs are slightly less efficient. If it were 60lm/watt I'd be a bit surprised, but 100lm seems pretty typical. Maybe not "well engineered", but average. (Which, with all due respect to the founder, seems the quality of the product.)

SPICLK2OP1mo ago

CREE offer a variety of LED types with efficiencies 150lm/w (eg CMB, XT-E), up to 230lm/w (eg, 5050).

While 100lm/w is typical for domestic LED lighting, it's going to cause problems when the total power is several orders of magnitude higher but the form factor is approximately the same size. That heatsink will probably fry an egg, and I wonder about the lifetime of the diffuser plastic.

ortusdux1mo ago

The 'wasted' electricity is turned into heat, which should be welcome by their target customer base.

SPICLK2OP1mo ago

I can't imagine the customer base for people who want a ~600W metal disc suspended at eye level is very big.

ortusdux1mo ago

Q: Does it get hot/how is it cooled? A: It's cooled through our large heatsink and ultra quiet Noctua fan. The fan only turns on above 75% brightness. At max power, the heatsink is cool enough to put your hands on it for a couple of seconds.

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antonok1mo ago

SPICLK2OP1mo ago

True enough, although CREE's XT-E offers 140 lm/w at a CRI of 80 and a colour temp of 3000k.

I assume this product has not met any regulatory requirements, because selling a ~600W hot plate suspended at eye level cannot be legal.

These LEDs are just the ones found on imported LED strips. Adjustable colour temperature is a novelty that is not compatible with LED efficiency or lifetime.

camtarn1mo ago

CRI of 80 is not great. From my reading, you want CRI 90 if you want light that's pleasant to exist in.

1 more reply

user_78321mo ago

> ~100 lumens per watt is rather poor

SPICLK2OP1mo ago

CREE offer a variety of LED types with efficiencies 150lm/w (eg CMB, XT-E), up to 230lm/w (eg, 5050).

ortusdux1mo ago

The 'wasted' electricity is turned into heat, which should be welcome by their target customer base.

SPICLK2OP1mo ago

I can't imagine the customer base for people who want a ~600W metal disc suspended at eye level is very big.

ortusdux1mo ago

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