Laser safety glasses for a diode engraver
Updated: October 2026
You have a blue or green diode on the desk and the lid is up for a tall piece of timber. Laser safety glasses for a diode engraver are about that moment. A closed Class 1 enclosure is the control. An open beam in the 405–532 nm range needs eyewear that names those lines. Lens colour and a pair thrown in the box are not the specification. This page is from the Products Compared editorial team, updated on 19 October 2026. The prices are the amazon.co.uk figures in the [laser safety glasses comparison](/hub/occupational-safety/laser-safety-glasses). We did not measure a beam. A qualifying purchase can earn a commission at no extra cost to you.
You have a blue or green diode on the desk and the lid is up for a tall piece of timber. Laser safety glasses for a diode engraver are about that moment. A closed Class 1 enclosure is the control.
You have a blue or green diode on the desk and the lid is up for a tall piece of timber. Laser safety glasses for a diode engraver are about that moment. A closed Class 1 enclosure is the control. An open beam in the 405–532 nm range needs eyewear that names those lines. Lens colour and a pair thrown in the box are not the specification. This page is from the Products Compared editorial team, updated on 19 October 2026. The prices are the amazon.co.uk figures in the laser safety glasses comparison. We did not measure a beam. A qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Lines named | OD claimed | Over glasses | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  xTool xTool laser safety glasses | Not stated in the details | Not stated | Yes, in UK reviews | 5.8 | about £45.00 | View offer |
| Best value |  FreeMascot FreeMascot OD 4+ 190–540 nm glasses | 405, 450, 520 and 532 nm | OD 4+ | Mixed in UK reviews | 6.7 | about £10.99 | View offer |
 FreeMascot FreeMascot OD 4+ 190–550 nm glasses | 190–550 nm, including 445 nm | OD 4+ | Disputed in UK reviews | 8.7 | about £13.99 | View offer |
On this page
Shut lid or open beam
GOV.UK’s laser classes put Class 4 above 500 mW. The beam is hazardous, and a diffuse reflection can be too. The same advice is clear that a high-power laser can be Class 1 only while it stays inside an enclosure that keeps the beam in. The phrase “eye-safe” belongs to that closed condition, not to a 20 W diode with the door open. If your machine can close, and the interlock works, keep the lid shut and do not watch the spot.
xTool’s own F2 safety note says the same thing in product language. If the enclosure can close, leave it closed and leave the interlock on. If it cannot close, use a controlled area and PPE. That note names 445 ± 15 nm, 655 ± 5 nm and 1064 ± 5 nm in the goggle advice for that machine. Those three lines are the maker’s note, not a specification printed on the xTool ASIN in this set. A 1064 nm module is already off this page. The Health and Safety Executive expects eyewear when the beam path is open and the class is above the old class 3A or above class 2M, and it still ranks screens and interlocks above glasses. Taping a switch so you can see the cut is not a problem you can shop your way out of. Close the lid, or keep people out. A tall jig that forces the lid up is the case for glasses, and only for glasses that match the open wavelength. Marking rules sit on how to choose laser safety glasses.
Do not trust the pair in the box
Bundled goggles have already failed an official check. GOV.UK product safety report 2310-0021 covers a Creality Falcon 2 sold as a 22 W Class 4 engraving machine to consumers. The import was rejected. The report says the goggles supplied did not provide the required protection, under the Supply of Machinery (Safety) Regulations 2008 and the PPE regulation. That machine is not an ASIN in this set. It is evidence that included glasses can be the wrong product even when the box looks complete.
UK reviews on the long FreeMascot file say the same thing in shopper language. People naming an xTool, a 5 W blue diode and a Sculpfun S9 report that the glasses which came with the machine were the wrong colour. Colour is a clue people notice. It is still not the spec. A German recall note has said green goggles on a blue laser were wrong. A red lens is not automatically correct for 450 nm either. Read the nanometres. If the bundled pair has no mark you can match to 405 nm, 450 nm or 532 nm, do not wear it for an open beam. Maker support has also said glasses supplied with an engraver can be something like 400–500 nm at OD 4+, while separately sold sets are specified differently. That sentence is about the maker’s own description of supplied glasses. It is not a test of every foam insert, and it is not a reason to skip the text on the frame you are holding.
What this set actually names
Two titles in this set name the visible diode lines. FreeMascot S3-540, B0CKT22LZ4, is about £10.99. The title says OD 4+ from 190–540 nm and names 405 nm, 450 nm, 520 nm and 532 nm. The listing is 4.4 from 26 reviews. Reviewers mention a hard case. Some can wear the frame over reading glasses, and one cannot. In this set that row is the best value when you want those names on a cheaper title. FreeMascot PTHSS9, B07M92ND2L, is about £13.99, OD 4+ from 190–550 nm, including 445 nm in the wording, at 4.3 from 1,106 reviews. It is the top pick of the comparison because of that review count and the named lines. Fit over prescription glasses is disputed.
Both are title matches. Neither product-details block prints an LB code, so neither is an EN 207 certificate in this folder. OD 4+ is not a calculation for a 5 W diode or a 22 W diode. Power density needs beam diameter and pulse length, and those figures are not in the files. Do not invent the scale. If this is Class 4 at work, ask a laser protection adviser or the supplier for the number. A hobby title match is as far as this shelf goes. A broadband IPL pair titled 200–2000 nm is not a substitute. Those rows are reviewed for hair removal and red light. One UK note on the red S3-540 says the tint made an IPL flash seem brighter, which is a reminder that the two jobs do not borrow each other’s glasses.
The xTool listing is a brand match
B0DW95519P is about £45.00, green, polycarbonate lenses, a resin frame, size M, 200 g, and 5.0 from 16 reviews. UK reviewers name an F2, including with the lid open, and say the glasses fit over prescription glasses. One calls them the official xTool glasses. The details do not state a wavelength, an optical density or a standard. You cannot copy the F2 note’s 445 nm, 655 nm and 1064 nm onto this ASIN, and you cannot copy OD figures from other xTool support articles onto it either.
Buy this row only if you will read the mark on the pair that arrives and match it to the module in the machine. A perfect star line does not fill a blank wavelength cell. Lid-open comments in reviews are not instructions to defeat an interlock. If the enclosure closes, use the enclosure. If the pair you hold has no 405–532 nm line, it is not the filter this page is describing, however official the brand name looks. After it arrives, check for scratches and for light at the temples before the first open-lid job, on how to check laser safety glasses. A new pair can still be the wrong pair. If the module is 1064 nm or the tube is CO2, stop and look for a filter that names that line. This set does not sell one.
Common questions
Do I need glasses if the lid stays shut?
If the machine is Class 1 only because the enclosure holds the beam, you need the lid shut and the interlock working, not a pair of glasses and an open door. Glasses do not replace that enclosure. You need eyewear when the beam path is open, which includes a lid that stays up and a switch you have bypassed. HSE still puts the screen and the interlock first.
What if I have to leave the lid up for a tall piece?
Then the beam is open and you need a filter that names the diode’s lines, plus a controlled space so other people are not in the reflection. In this set the titles that name about 405–532 nm are B0CKT22LZ4 at about £10.99 and B07M92ND2L at about £13.99, both OD 4+ on the title and neither with an LB code in the details. Do not use the job height as a reason to skip the mark. If you cannot match the wavelength, do not run the open job.
Are the glasses in the box enough?
Not because they were in the box. GOV.UK rejected a Falcon 2 import in part because the supplied goggles did not protect. UK reviewers of diode machines, including xTool and Sculpfun owners, say the included pair was the wrong colour. Read the nanometres on that pair. If they are missing or they do not cover your line, treat the bundled glasses as packaging, not as PPE.
Does a red lens mean it is for a blue laser?
Sometimes a red lens is what a 450 nm filter looks like, and sometimes it is not. The specification is the wavelength on the frame, not the colour you see. Green goggles have been the wrong product on a blue laser in a recall note, and a red lens with no nanometres is still an unmarked lens. Match 405 nm, 450 nm, 520 nm or 532 nm in writing before you trust the tint.
Which pairs in this set name 450 nm?
B0CKT22LZ4 names 405 nm, 450 nm, 520 nm and 532 nm at OD 4+, about £10.99. B07M92ND2L names a 190–550 nm OD 4+ range that includes 450 nm and 445 nm, at about £13.99, with 1,106 reviews. The xTool listing does not name 450 nm in the details. The IPL rows that say 200–2000 nm do not name it as a diode line. Those two FreeMascot titles are the matches in this set, with the certification gap left in view.
Is OD 4+ enough for a 5 W or a 22 W diode?
This file cannot say. Optical density on a title is not an EN 207 LB number, and the LB number depends on power density, beam size and pulse. None of those is in the amazon details. A 5 W hobby diode and a 22 W Class 4 machine are not the same exposure. Do not scale OD 4+ up or down by the wattage on the lid. Ask the supplier if this is a workplace Class 4 source.
Does the xTool row replace a marked filter?
No. B0DW95519P at about £45.00 is a brand match that reviewers use on an F2, including over prescription glasses, and the listing does not state a wavelength. Other xTool articles describe other goggles. Those OD figures stay on those articles. If the pair in your hand has a printed line for your diode, use that line. If it does not, the brand name has not replaced it.
Related pages
Sources
Public UK sources from the research digest. Shelf prices and star lines are the amazon.co.uk figures in the display file. The price bands are this set, not a market average.
- HSE: lasers (retrieved 19 October 2026)
- HSE: artificial optical radiation, employer note (retrieved 19 October 2026)
- HSE: PPE product safety and supply (retrieved 19 October 2026)
- GOV.UK: PPE Regulation 2016/425 and the 2018 enforcement regulations (retrieved 19 October 2026)
- GOV.UK: designated standards for PPE (retrieved 19 October 2026)
- BSI: BS EN 207:2017 laser eye-protectors (retrieved 19 October 2026)
- BSI: BS EN 208:2009 laser adjustment eye-protectors (retrieved 19 October 2026)
- GOV.UK: laser radiation safety advice (retrieved 19 October 2026)