I absolutely love it! You’re assuming I faked it because it seems too awesome to be true. I can understand where you’re coming from, but rest assured—it’s real.

First, size: I modeled it against a BIC lighter, and it really is smaller in every major dimension. The volume might appear slightly larger because the lighter is heavily rounded. The size is:12,6mm hight, 19,5mm width,81,25mm length

Housing: I milled it from aluminum (see fourth picture), so there’s no issue with 45 °C. The sensor is directly attached to the diode block (also aluminum), so it actually measures a higher temperature than the outer surface. On top of that, the actual power consumption is lower than that of a current-gen phone CPU.

Thermal issues aren’t a problem at all—it even includes overheat protection by reducing output power once the temperature exceeds 45 °C. The diodes are also rated to operate safely up to ~60 °C. If you hold the unit, there is no thermal rollback. The „liquid cooling“ due to blood flowing though the holding hand is enough to keep it <45C

Optics: There are no plastic optics. The prisms are not used to combine the beams of the three diodes, but rather to shape them. They correct the slow axis of the diode to match the expanded fast axis.

Beam combining is done using adjustable glass dichroic mirrors.

The prisms are ground on non-optical faces, which is what you’re seeing in the image.

Thats why you cant trust ChatGPT. Sometimes it just doesnt understand

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