TS EN ISO 11145

TS EN ISO 11145 is a vocabulary-and-symbols standard for laser technology. It defines the basic terms, symbols and units used to describe beam parameters and laser-related product properties, with the goal of giving the field a common technical language. For users of optical and laser documentation, the value of this kind of standard is clarity: measurement reports, drawings and product descriptions can be read and compared consistently when key terms are defined in the same way.

Why laser terminology needs standardisation

Laser systems are often judged by more than the fact that they emit coherent light. Practical discussion depends on how beam diameter, directionality, wavelength, power, energy and beam quality are named and expressed. In general technical context, standardised vocabulary reduces ambiguity between manufacturers, laboratories and users, which is especially important when data must be reproduced, compared or transferred into specifications. This standard addresses that language layer rather than the design of a specific laser product.

What this kind of document is used for

• Basic laser concepts and their naming conventions
• Common symbols and measurement units for laser-related terminology
• Clear definitions for beam parameters and product properties
• Consistent wording in technical documents, drawings and test descriptions

As a terminology standard, it supports understanding and communication rather than prescribing a single device design. Its role is to make reported values and descriptions interpretable across different contexts, from laboratory work to industrial laser applications. This TS EN ISO 11145 edition is withdrawn, but the subject matter remains foundational for anyone working with laser specifications and optical documentation.