Lighting desgin

Question 1

List four factors that modern lighting design needs to consider

Answer 1

Energy efficiency

Visual comfort

Daylight integration

Glare control

Question 2

Lux and Lumen: Explain what Lux and Lumen are used to measure

Answer 2

Lumen measures the total light output (luminous flux).

Lux measures illumination — lumens per square meter.

Question 3

List four fundamental questions for interior lighting design strategy

Answer 3

What activities will occur in the space?

What are the daylight conditions?

What lighting levels are required?

How will lighting be controlled (automatically or manually)?

Question 4

tandards used in NZ and which other country shares them

Answer 4

NZ uses the AS/NZS 1680 series for interior lighting.

Shared with Australia.

Question 5

How Light Shelves assist with daylighting

Answer 5

Reflect sunlight deeper into a room by bouncing it off the shelf surface.

Reduce glare and improve uniformity of daylight distribution.

Question 6

Effect of one building’s proximity on daylight (with or without diagram)

Answer 6

Nearby buildings can block or reduce direct sunlight and sky view, decreasing daylight availability.

The closer and taller a building is, the less daylight reaches windows opposite it.

Question 7

uide introduced to control light pollution and why it’s important

Answer 7

Guide: CIE 150 or local equivalents like NZS 4404 recommendations.

Importance:

Reduces skyglow and preserves night sky visibility

Prevents light trespass and discomfort

Minimizes ecological impacts on wildlife and human circadian rhythms

Question 8

Protection measure for luminaires and highest rating (1 mark)

Answer 8

Measured by IP rating (Ingress Protection).

Highest common rating: IP68 (fully dust- and waterproof).