EN ISO 24550:2019 PDF
Ergonomics - Accessible design - Indicator lights on consumer products (ISO 24550:2019)
Ergonomics - Accessible design - Indicator lights on consumer products (ISO 24550:2019)
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 16
- Дата публикации:
- 20 ноября 2019 г.
- Издание:
- CEN EN 24550 edition 1 version 1
- ICS:
- 11.180.15
This document specifies design requirements and recommendations for indicator lights, mainly LED sourced, on consumer products for use by older people and people with visual disabilities. It does not consider the needs of persons who are blind. Indicator lights include those that inform users visually about the conditions, changes in functional status and settings, and malfunction of products. They convey information by light on/off, time-modulated intensity, blinking, colour, luminance level, and layout. This document addresses household and home appliances. It excludes electronic displays presenting characters and graphics, machinery, and appliances in special use for professional, technical, and industrial applications.
Abstract
Overview
EN ISO 24550:2019 - Ergonomics: Accessible design - Indicator lights on consumer products (adopted by CEN) specifies design requirements and recommendations for indicator lights (mainly LED-sourced) on household and home appliances to improve accessibility for older people and people with visual disabilities. The standard covers visual signalling by on/off, time‑modulated intensity, blinking, colour, luminance and layout. It excludes full electronic displays (characters/graphics), industrial/professional machinery and the needs of people who are blind.
Key topics and technical requirements
- Modes of lighting: Defines recognisable modes such as light-on, light-off, blinking and gradual luminance changes - each mode should convey a distinct meaning to users.
- Colour use: Colours must be noticeable relative to surroundings; multiple colours in one product must be discriminable. Colour must not be the sole means of differentiation.
- Luminance and visibility: Guidance on adequate luminance levels and contrast to ensure visibility for people with reduced vision and in various ambient lighting conditions.
- Size and small-field effects: Defines a small indicator light as an emitting area with visual angle
Технические детали
- Технический комитет
- CEN/TC 122 - Ergonomics
- SKU
- EN ISO 24550:2019
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