How to Read CE Marking Notation?

CE marks are only required in countries that have taken the European Norms ("EN") and have then gone ahead and adopted those laser safety regulations.  This is typically European Union ("EU") countries such as Germany.  CE markings are not required here in the United States nor in countries in North America.  All of our laser safety glasses meet ANSI and OSHA requirements, the standards that are applicable in North America. Please reach out if you have any questions.  

What is ANSI?

ANSI standards are created from volunteers and varied viewpoints and interests to achieve consensus on laser safety issues. Numerous organizations for the laser safety standards were represented (Government agencies (i.e. Federal Aviation Administration (FAA)), branches of the U.S. military, different laboratories (i.e. Los Alamos National Laboratory), and representatives from different organizations (i.e. American Dental Association). The Laser Institute of America (“LIA”) servers as the secretariat and publisher of the ANSI Z136 series on laser safety standards (of which we, Laser Safety Industries are a proud member of).

What are European Norms ("EN")?

European Norms (“EN”) are formed in somewhat of a similar capacity with the material difference that where these “norms” are adopted, they become law. Furthermore, an independent verifier must issue certification that a protection level is met.

ANSI vs CE Laser Safety

As a result of working with large international corporate clients that require the CE certification, we have obtained the CE mark certification for particular frames (our frame 10 fit-over) on the following filters(110/111, 125/126, 130/131, 145/146).  The fit-over (frame 10) marketed in the (110, 125, 130, and 145) are the exact same as the fit-over with the SKUs (111, 126, 131, 146) marketed with the CE certification.  

The material used in the filter/lens of the eyewear for (100-xx-110; 100-xx-125; 100-xx-130; 100-xx-145 product offerings) are all the same in each frame (and not to repeat information but this also means the same material for the filter/lens in the corresponding CE marked product (100-10-111; 100-10-126; 100-10-131; 100-10-146).  To be clear, only the the fit-over frame 10 in the SKUs mentioned above have obtained CE certification, marketed as (100-10-111, 100-10-126, 100-10-131, 100-10-146).

The remainder of the frames in the SKUs mentioned above (100-xx-110; 100-xx-125; 100-xx-130; 100-xx-145) have not been certified with a CE mark. 

For corporate clients who are in need of this particular certification for a given filter/frame combination, we are always happy to work with them if the need arises to begin the certification process.  

Further information on who creates the standards/norms, and the difference in ANSI and EN, click here.


Reading CE Laser Safety Notation

Example: European Conformity (CE) KTP Laser Safety Glasses, (our 110/111) the specifications are as follows:

Specifications:  D 190-532nm LB6 |  | I, R 190-532 nm LB7

Let's break down how to read the specifications:

  • The LB6 level in the first specification corresponds to an optical density ("OD") of 6 for type "D" laser from 190-532 nm (see below for further detail). 

The testing and corresponding certification process for a CE mark is on both the frame as well as the lens.  The EN(s) have has taken a very conservative (and expensive) approach, requiring testing on each particular frame as well as the lens. 

Our laser safety glasses (and other PPE) are for diffused viewing and incidental direct hits; utilizing laser safety eyewear or other PPE for direct viewing for long durations of time (more than 0.25s for visible lasers - the reflex of the blink of the eye) is not property laser safety and we never suggest looking directly at a laser, EVER, EVEN FOR EYEWEAR THAT HAVE CE CERTIFICATION.  This is not proper laser safety. 

We illustrated the difference in CE marked specifications and the OD specifications that are common industry notation here in the United States and North America.

In the image directly above, the image on the left would have the specification of an LB6, as it would be the minimum specification of the frame and the lens Min(LB6,LB7). Our optical density markings that are not CE marked are only a statement about the lens, and the image on the right would be marked with an OD7

  • The first letter D (or the second specification I and R) refer to the pulse frequency of the laser that particular specification has been marked for.  For instance, the "D" represents a continuous wavelength laser with constant power.  See beneath the table for details of each type of laser.  For a brief overview on why pulse frequency matters, see here. 

We've included the table from EN207 for the classification and specifications of filters and eye protection against lasers

EN207 – Classification and Specifications of filters and eye protection against Lasers

Scale number

Max spectral transmittance At Laser Wavelength

Maximum power (E) and/or energy (H) density in the wavelength range

180nm to 315nm

>315nm to 1400nm

>1400nm to 1000 microns

D
W/m 2

I,R
J/m 2

M
W/m 2

D
W/m 2

I,R
J/m 2

M
J/m 2

D
W/m 2

I,R
J/m 2

M
W/m 2

L1

10 -1

10 -2

3x10 2

3x10 11

10 2

5x10 -2

1.5x10 -3

10 4

10 3

10 12

L2

10 -2

10 -1

3x10 3

3x10 12

10 3

5x10 -1

1.5x10 -2

10 5

10 4

10 13

L3

10 -3

1

3x10 4

3x10 13

10 4

5

0.15

10 6

10 5

10 14

L4

10 -4

10

3x10 5

3x10 14

10 5

50

1.5

10 7

10 6

10 15

L5

10 -5

10 2

3x10 6

3x10 15

10 6

5x10 2

15

10 8

10 7

10 16

L6

10 -6

10 3

3x10 7

3x10 16

10 7

5x10 3

1.5x10 2

10 9

10 8

10 17

L7

10 -7

10 4

3x10 8

3x10 17

10 8

5x10 4

1.5x10 3

10 10

10 9

10 18

L8

10 -8

10 5

3x10 9

3x10 18

10 9

5x10 5

1.5x10 4

10 11

10 10

10 19

L9

10 -9

10 6

3x10 10

3x10 19

10 10

5x10 6

1.5x10 5

10 12

10 11

10 20

L10

10 -10

10 7

3x10 11

3x10 20

10 11

5x10 7

1.5x10 6

10 13

10 12

10 21


The L value corresponds to the optical density value L6 = OD 6

The maximum transmittance at the wavelength allowed for the that “L” level

D

Continuous Wave (cw) with constant average power.

Pulsed Length: > 0.25 seconds

I,R

I: Pulsed: short single or periodic energy emission

> 1µs to 0.25s

R: Giant Pulsed: very short single or periodic energy mission

1 µs to 1ns

M

M: Mode locked. 

< 1 ns (pico and femtosecond)

The different shades of green are the different wavelength ranges