Cloudray

Cloudray CO2 Laser Lens Dia 20mm FL50.8mm Mirror Focal Lens

Name: Cloudray CO2 Laser Lens Dia 20mm FL50.8mm Mirror Focal Lens
Brand: Cloudray
SKU: B07B8J9PMV
Price: 33.29 USD
Availability: InStock

#31 in Engraving Machines & Tools on Amazon

$33.29at Amazon, price as of 13 August 2026, 09:10 UTC. Subject to change.

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Everything below is the listing’s own claim, quoted with the date we read it.

What Laser Oracle checked on this listingThe counts above in full, and the limits of reading a listing

Laser Oracle tracks the Cloudray CO2 Laser Lens Dia 20mm FL50.8mm Mirror Focal Lens because it is among the best-selling optics and safety on Amazon, currently #31 in Engraving Machines & Tools. According to the Amazon product page, read 13 August 2026, it sells for $33.29. That figure and the stock status come from the Amazon Product Advertising API and are refreshed every three hours, so neither is ever more than 24 hours old. Laser Oracle checks every listing in this category against three specifications that decide the purchase, and this one does not state rated wavelength, optical density, certification. That is a fact about the listing rather than about the product: a seller who prints no figure has not told us the product lacks one. There is no sourced specification review on this page and there is not going to be one until there is a document to cite: the brands that lead this category publish no manuals or spec sheets, which is itself the reason these pages measure listings rather than restate them. Everything quoted below is the seller's own wording from the listing, read 13 August 2026, and it is a claim rather than a measurement anyone has checked. Laser Oracle does not test machines and does not claim to.

What this listing states

Checked against the specifications that decide a optics and safety purchase.

Which decision-grade specifications this listing states
Specification	In this listing	Across the category
Rated wavelength	No rated wavelength — this is not laser eyewear	4 of 6 listings
Optical density	No optical density stated	2 of 6 listings
Certification	No certification stated	2 of 6 listings

“Stated” means the figure appears in the title or the bullets. It is not a verification, and an absence is a fact about the listing rather than the product.

What the listing claims

Quoted from the Amazon listing, read 13 August 2026. These are the seller’s words, not our measurements.

“Material: High Quality CVD Znse,compatible power: 40W-200W”
“Diameter: 20mm/0.79"; Focal Length:50.8mm/2"; Thickness: 2mm/0.07"”
“Shape: Meniscus; Transmittance: ≥99.5%;Package includes: 1 x Lens”
“Superb Coating Process: Double-sided Solid Coating. Wiping Resistance. Long Working Life”
“Usage: CO2 Laser Lens for CO2 laser engraving, cutting machine”

What this listing does not tell you

Rated wavelength. 🔴 THE ONE PURCHASE WHERE THE RATING IS THE PRODUCT. Safety glasses are filters tuned to a wavelength range, so a pair for a CO2 machine and a pair for a fiber machine block different light and are not interchangeable. Tinted eyewear with no stated wavelength is sunglasses, whatever it is sold beside.
Optical density. Optical density is how much of the rated wavelength the filter removes, on a logarithmic scale. It only means anything paired with the wavelength it applies to: a high density at the wrong wavelength is protection against light your machine does not emit.
Certification. A stated standard is a claim someone else can check. It is not a guarantee the product was tested, but its absence means there is nothing to check at all.

$36

See price and claims

Image: Amazon