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Room-by-room illuminance, glare and circadian timing

Room-by-room illuminance, glare and circadian timing: this guide has a section for each room and task with the lux level it needs (kitchen worktop, desk…

This launch guide maps the topic, the source base and the practical questions. Check the linked official authority before acting on a rule, deadline, price or safety requirement.

What this guide covers

This guide has a section for each room and task with the lux level it needs (kitchen worktop, desk, bathroom mirror, stairs, reading chair, workshop, child's homework corner, an older person's hallway — the requirement roughly doubles by age 60), and a lumen calculator that turns room area and task into how many lamps.

Then the parts that matter for health: colour temperature through the evening, flicker and how to test for it with a phone camera, CRI, glare, dimming technology, blackout and the light that reaches a bed, night lights, and what the circadian literature does and does not support.

How to use it

Use Room-by-room illuminance, glare and circadian timing to understand the inputs, units and assumptions before relying on an output. A useful result should be reproducible from the named source rather than presented as an unexplained score.

The page keeps the main question, its evidence base and its limits together in one canonical place. That makes it useful as a quick orientation and avoids splitting a broad subject into shallow pages before each narrower answer has enough verified material of its own.

Search vocabulary in four languages

Terminology changes across borders. These are example phrases people use for the same subject in Estonian, Finnish, Russian and English; they are included as a practical vocabulary aid, not as hidden keywords.

Ways to describe this topic
LanguageExample phrase
Estonianvalgustus lux normid ruumides
Finnishvalaistusvoimakkuus lux suositus
Russianосвещенность в комнате норма люкс
Englishhow many lumens for a kitchen

Evidence and provenance

The evidence map below records the primary, official or openly licensed material chosen for this guide. It is deliberately visible so a reader can tell the difference between a rule published by an authority, a measured dataset and an editorial explanation.

Source: EN 12464-1 illuminance values and EU lighting regulation 2019/2015 label rules (facts cited), CIE and published circadian-lighting research; the lumen maths computed. · checked 2026-09-09

Source names are preserved even where an authority changes its web address. No figure is added to this launch page unless it is already present in the cited source description or can be computed from a named dataset.

Scope and boundaries

/lighting is a product-buying guide for lamps and fixtures, while this is the measured room-and-task design layer; /more/winter covers bright- light therapy rather than ordinary household light.

Connected TempoLife guides

The following paths are the intentional hand-offs named in the brief. They keep adjacent subjects separate while making the next useful reference easy to find.

More Eyes

Continue to the related TempoLife reference.

Why it belongs on TempoLife

the apex sleep calculator and /more/eyes.

Frequently asked questions

What does this guide cover?

This guide has a section for each room and task with the lux level it needs (kitchen worktop, desk, bathroom mirror, stairs, reading chair, workshop, child's homework corner, an older person's hallway — the requirement roughly doubles by age 60), and a lumen calculator that turns room area and task into how many lamps. Then the parts that matter for health: colour temperature through the evening, flicker and how to test for it with a phone camera, CRI, glare, dimming technology, blackout and the light that…

What evidence does it use?

EN 12464-1 illuminance values and EU lighting regulation 2019/2015 label rules (facts cited), CIE and published circadian-lighting research; the lumen maths computed.

Where does this guide stop?

/lighting is a product-buying guide for lamps and fixtures, while this is the measured room-and-task design layer; /more/winter covers bright- light therapy rather than ordinary household light.

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