ISO 9241 Part 7: Requirements for display with reflections


ISO 9241-7:1998 Ergonomic requirements for office work with visual display terminals (VDTs) -- Part 7: Requirements for display with reflections.


International Standard. Will be replaced by the ISO9241-300 subseries.

Lifecycle Phase

Build the context of use.

Type of Guidance


Application Area

  • Equipment
  • User testing


This part of ISO 9241 aims to help designers measure screen reflections that might affect user comfort and task performance when using display screen equipment. It specifies requirements and methods to measure image quality in lighting environments that can cause specular and diffuse reflections from the screen. The requirements cover: image luminance ratio with reflections; specular reflection luminance ratio; reflection control method and effect on image quality; and the reference luminous environment. The standard includes a detailed section describing how to measure and calculate reflections. The standard also includes four annexes: an alternative, performance-based test method; a graphical report format; a worked example; and a bibliography.


This is a technical standard that assumes a good working knowledge of light measurement. The main audience is display engineers who want to make sure that anti-reflection treatments do not degrade image quality.

See Also

ISO 9241-3:1992 Ergonomic requirements for office work with visual display terminals (VDTs) -- Part 3: Visual display requirements.

ISO 9241-8:1997 Ergonomic requirements for office work with visual display terminals (VDTs) -- Part 8: Requirements for displayed colours.

ISO 13406-2:2001 Ergonomic requirements for work with visual displays based on flat panels -- Part 2: Ergonomic requirements for flat panel displays.

Note: this page is a few editions behind the eBook and may be out-of-date. For the very latest on ISO 9241 get the eBook version of ISO 9241 for Beginners.

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