Photometric Light & Surface Laboratory

Manipulate luminaire optical geometry, setback distance, and spectral Kelvin values to study architectural photon distribution in real time.

Active Effect: wallwashBeam: 42°

Initializing Architectural Three.js Canvas...

Optical Parameter Console

Three.js Architectural Photometry Engine

Architectural Lighting Effect Presets

Distance From Wall (d)1.10 m

0.20m (Grazing)1.10m (1:3 Wallwash)3.50m (Deep Room)

Optical Beam Angle (2×θ½)42°

8° Narrow Spot24° Flood65° Wide

Color Temperature (CCT)3000 K

2200K Candle3000K Museum4000K Neutral6500K Daylight

Luminous Output (Intensity)85 %

Lateral Track Position (X)0.00 m

Optical Aiming Target

Display Beam Envelope Cone

Surface Photometry Telemetry

Est. Target Lux1157 lx

Spot DiameterØ 1.37m

Wall Setback (d/H)1 : 2.9

Optimal 1:3 ratio maintained. Vertical plane receives even illuminance without ceiling scallop scallops.

01 / The Setback Ratio

1:3 Wallwash Proportion

Mounting the luminaire at approximately one-third of the ceiling height distance from the vertical surface ensures smooth top-to-bottom luminance falloff without ceiling scallops or blinding glare.

02 / Micro-Relief Raking

Grazing Angle Dynamics

Steep raking angles (d < 0.3m) accentuate plaster texture, board-formed concrete, and masonry fluting by casting micro-shadows across surface irregularities.

03 / Darklight Cut-off

Visual Comfort & UGR

Precision reflectors shield the primary emitter from normal sightlines (shielding angle > 35°), rendering the source virtually invisible until the observer stands directly beneath the luminaire cone.