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Goggles for motorcycles ans moped users - NF EN 1938 (2010)

Compulsory tests and examinations :

Adjustment and adaptation (1938-AJA1)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to check by visual inspection of the holding of a ski mask in use, and its adaptation to the shape of the face.

The sample is compliant if the surfaces in contact with the face are made in a flexible, soft material, and if the headband is elastic or adjustable and provides firm holding at the back of the head or helmet. The whole headband must resist all the stresses it is subjected to under normal use, without tearing or suffering permanent deformation.


Field of vision (1938-CV03)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to measure the part of space visible through a mask or spectacles, by verifying the contour of the frame using ellipsis.

The sample is compliant if the spectacles frame does not obstruct vision.


Marking and information control (1938-MI06)

Accreditation # 1-1497 Scope available on www.cofrac.fr

The supplier or manufacturer must provide at least the following information, for markings on the frame, on packaging, and affixed labels :


Difference of prismatic optical power (1938-DP04)

Accreditation # 1-1497 Scope available on www.cofrac.fr

The aim of this test is to assess the difference in the prismatic power of a frame by measuring the deviations, horizontal and vertical, of the rays crossing the eyepieces.

The interpretation of the results depends on the standard tested.


Light diffusion - type A eyepieces (single screen)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to determine the reduced luminance factor of a single-eyepiece framed or unframed solar protection filter. This test characterises the light diffused by the illumination of the eyepiece.

The samples are compliant if the value of the reduced luminance factor falls within the tolerances set out in the appropriate standards.


Light diffusion – type B eyepieces (double screen) (1938-LD03)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to determine the reduced luminance factor of a double-eyepiece framed or unframed solar protection filter. This test characterises the light diffused by the illumination of the eyepiece.

The samples are compliant if the value of the reduced luminance factor falls within the tolerances set out in the appropriate standards.


Dimension (1938-DIM1)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to verify that the dimensions of screens and of eyepieces are appropriate for the user (minimum dimensions to adhere to ensure correct vision).

The sample is compliant if the minimum eyepiece opening is adhered to.


General requirements (1938-EGE1)

Accreditation # 1-1497 Scope available on www.cofrac.fr

Spectacles-masks must be free of protrusions, sharp angles or other defects likely to cause a lack of comfort or body injuries during use.


Transmission factor and filter category (1938-FT05)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to measure, at the reference point, the transmission factor of a filter (visible and UV), to determine its category and to check requirements relating to car driving and road users  (recognition of traffic lights).

There are 3 filter categories from the lightest (Cat 0) to the darkest (Cat 2). The UV transmission requirements differ in function of the category.


Homogeneity of the transmission factor of framed and separate eyepieces (1938-HTMS)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to verify the variation, in the relative value, of the transmission factor in the visible of a single frame. Measurements are taken at the centre of vision between the right eyepiece and the left eyepiece.

The variation must not exceed 20% (related to the lightest filter).


Optical power of eyepieces (1938-PO04)

Accreditation # 1-1497 Scope available on www.cofrac.fr

The aim of this test is to measure the values of the spherical, astigmatic and prismatic powers of lenses. The measurements are made at the reference point.

The interpretation of the results, with regard to optical power, depends on the standard tested.


Quality of material and surface (1938-MS01)

Accreditation # 1-1497 Scope available on www.cofrac.fr

The aim of this test is to evidence all material and surface faults present on the eyepieces of personal eye protection equipment and ophthalmic eyepieces.

The observation zone is 30 mm around the reference point, it excludes a marginal zone of 5 mm from the edge of the lens. A large range of faults may be observed on the latter (e.g.: bubbles, embedding, scratches, cracks…).


Resistance to the deterioration of surfaces by fine particles (1938-DFP3)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to test the resistance of eyepiece surfaces to the deteriorating action of fine particles.

The results are interpreted differently according to the standard, using measurements carried out on the diffusion bench.


Resistance to impact (1938-SRC1)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to verify the resistance of spectacles-masks to frontal impacts produced by a ball of 6mm diameter at two specific points of the protector (left eye, right eye), at a speed of 45 m/s. In order to conduct this test, it is necessary to condition the different spectacles-masks beforehand at temperatures of -10°C for the former, and at 50°C for the latter.

Samples are compliant when, on visual inspection, they present no fracturing or deformations.


Resistance to double-screen rays (1938-RRU6)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us, according to the claimed filter category, to establish a relative variation of the transmission factor in the visible and of the reduced luminance coefficient, after 25 hours’ exposure to Ultra Violet rays on a double screen.

The sample is compliant when all the standard-specific requirements are satisfied.


Resistance to rays single screen (1938-RRU5)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us, according to the claimed filter category, to establish a relative variation of the transmission factor in the visible and of the reduced luminance coefficient after 25 hours’exposure to Ultra Violet rays on a single screen.

The sample is compliant when all the standard-specific requirements are satisfied.


Variation of the transmission factor in the visible (1938-HFT3)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to check the variation of the transmission factor in the visible (comparison between two measurements) and in the UVs of a single filter.

The largest of these two measurements being considered must not exceed by over 10%, and the UV requirements must be adhered to.


Ventilation (1938-VEN1)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to verify whether the insides of spectacles-masks are correctly ventilated during use.

The sample is compliant if the ventilation is adhered to and if the air holes, which must be situated outside the eyepiece areas, do not significantly reduce peripheral vision.



Optional tests and examinations :

Special transmission requirement for polarising filters and degree and ratio of polarisation (1938-EPP1)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to determine, for polarising filters, the ratio of the values of the transmission factors in the visible parallel and perpendicular to the polarisation plane.

The sample is compliant if the ratio (between these two values) is above 8:1 in categories 2, or is above 4:1 for category 1.


Claimed increased absorption of infrareds requirement only (from 780nm to 2000nm) (1938-AIO1)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to verify that eyepieces described by manufacturers as having increased absorption of infrareds, are compliant.

Samples are compliant when the maximum value of the transmission factor of solar infrared is less than or equal to the transmission factor in the visible.


Orientation of framed polarising filters (1938-OP01)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to determine, on a spectacles-mask framed and fitted with a polarising filter, the polarisation plane.

The sample is compliant if the polarisation plane does not deviate more than ±5° from horizontal. The alignment discrepancy between the right and left polarisation filters must not exceed 6°.


Resistance to misting (1938-RB03)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to test the resistance of personal eye protection equipment to misting. This specification is optional. The test is only conducted if the manufacturer or distributor claims that the product is misting resistant.

The samples are compliant if the misting time measured is above or equal to the requirements set out by the standard.


Transmittance (clear T0/dark T1) and filter category for photochromic filters (1938-FT13)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to measure, at a reference point, the transmission factor of a filter (visible and UV) to determine its category and check requirements relating to car driving and road users (recognition of traffic lights).

There are 5 filters categories from the lightest (cat 0) to the darkest (cat 4). The UV transmission requirements differ in function of the category.


Homogeneity of transmission for photochromic filters in the visible unmounted oculars (1938-HFT5)

Accreditation # 1-1497 Scope available on www.cofrac.fr


Homogeneity of transmission for photochromic filters in the visible mounted oculars (1938-HFT6)

Accreditation # 1-1497 Scope available on www.cofrac.fr


UV ageing (including transmission and diffusion after UV) for photochromic filters - Simple screen (1938-RRU9)

Accreditation # 1-1497 Scope available on www.cofrac.fr



A.LU.TEC laboratory
c/o Lycée Victor Bérard
35 quai Aimé Lamy - 39400 Morez - France
Tél. : +33 (0)3 84 33 61 51
Fax : +33 (0)3 84 33 35 13

Accreditation # 1-1497
Scope available on www.cofrac.fr

Only tests identified with symbol
are performed under accreditation covered.


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