ISO 19818-1:2021 Eye and face protection — Protection against laser radiation —Part 1: Requirements and test methods

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Eye and face protection — Protection against laser radiation —Part 1: Requirements and test methods是国际标准化组织(International Organization for Standardization，简称ISO)于2021-06发布的ISO标准，适用于全球。

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Eye and face protection — Protection against laser radiation —

Part 1: Requirements and test methods

1 Scope

This document is applicable to protectors intended to provide protection against accidental exposure to laser radiation within the wavelength range 180 nm to 1 mm. It specifies the requirements, test methods and marking. Protectors intended for adjustment work on lasers are included in the scope of this document and are marked in the same way as other protectors, but selection of appropriate eyewear for a specific application is a choice of the user. Laser protective filters used as viewing windows in laser equipment machinery or incorporated into optical instruments such as operating microscopes and loupes that may be used for deliberate viewing of laser radiation as part of their function are outside the scope of this document.

Laser radiation in the wavelength range below 180 nm is absorbed in air, therefore eye and face protection should not be required.

This document is applicable to devices intended for patient protection during medical laser procedures except for treatment in the periorbital area. Guidance on eye protectors for patients (including those used for periorbital treatment) is given in ISO/TR 22463.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 4007, Personal protective equipment — Eye and face protection — Vocabulary

ISO 16321-1:2021, Eye and face protection for occupational use — Part 1: General requirements

ISO 16321-2:2021, Eye and face protection for occupational use — Part 2: Additional requirements for protectors used during welding and related techniques

ISO 18526-1:2020, Eye and face protection — Test methods — Part 1: Geometrical optical properties

ISO 18526-2:2020, Eye and face protection — Test methods — Part 2: Physical optical properties

ISO 18526-3:2020, Eye and face protection — Test methods — Part 3: Physical and mechanical properties

ISO 18526-4:2020, Eye and face protection — Test methods — Part 4: Headforms

3 Terms a nd definiti ons

For the purposes of this document, the terms and definitions given in ISO 4007 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://w ww .iso .org/o bp

— IEC Electropedia: available at http:// www .electropedia. org/

3.1

resistance category

RC

rating for a protector that specifies its ability to withstand a given level of irradiance or radiant exposure without compromise to its protective properties

Note 1 to entry: Laser filters and frames may provide different resistance categories for different laser modes, wavelengths or wavelength ranges.

3.2

optical density (spectral)

OD

D(λ)

logarithm to the base 10 of the reciprocal of the (spectral) transmittance

Note 1 to entry: Optical density is therefore expressed by the formula:

D(λ) = −log τ(λ)

10

where τ(λ) is the spectral transmittance.

Note 2 to entry: Practically OD can be considered a measure of the orders of magnitude of attenuation experienced by laser energy passing through a filter.

[SOURCE: ISO 4007:2018, 3.10.1.21 – Note 1 to entry and Note 2 to entry have been modified.]

3.3

pulse duration

time interval between the half-peak power points at the leading and trailing edges of a pulse

Note 1 to entry: For ultrashort pulses, pulse duration is linked to spectral bandwidth.

[SOURCE: IEC 60825-1:2014, 3.69 modified – "increment" changed to "interval" in the definition, Note 1 to entry added and "measured" removed from the definition.]

3.4

reference points (for testing)

visual centres

mounted lenses points on each lens corresponding to the intersection of the horizontal and vertical planes through the pupils of the appropriate headform when the protector is correctly fitted on it

Note 1 to entry: See Figure 1.

[SOURCE: ISO 4007:2018, 3.8.7 modified – internal references in ISO 4007 have been removed from the definition.]

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