Lighting Simulator

Opening the local project…

Scene preset

Design guidance · Living-room accent wall

Check maintained illuminance with the stated maintenance factor.
Use measured reflectance where available; texture colour is not a measurement.
Compare task and background illumination, including the darkest task points.
Glare assessment requires observer position, direction and emitting-area data.
Check wall-plane uniformity and end gaps using the actual aiming and photometry.

Dimensions

Width · Xm

Height · Ym

Depth · Zm

Surface materials

CeilingPaint

Ceiling

Red reflectance%

Green reflectance%

Blue reflectance%

WallsPaint

Walls

Red reflectance%

Green reflectance%

Blue reflectance%

Accent wallPaint

Accent wall

Red reflectance%

Green reflectance%

Blue reflectance%

FloorWood

Floor

Red reflectance%

Green reflectance%

Blue reflectance%

Appearance is separate from measured reflectance. Edited values are project assumptions.

Accent wall

Calculation

Workplane heightm

Wall exclusion marginm

Maintenance factor · MF%

Target illuminancelx

Minimum illuminancelx

Uniformity · U₀%

Furniture and objects 3

Hiding furniture changes the view only. Edit physical obstruction separately.

Sofa sofa

Show furniturePhysical obstruction

Position · Xm

Position · Ym

Position · Zm

Table coffee-table

Show furniturePhysical obstruction

Position · Xm

Position · Ym

Position · Zm

Artwork artwork

Show furniturePhysical obstruction

Fixed object

Task areas 2

Dining area coffee-table150 lx

Target illuminancelx

Minimum illuminancelx

Maximum illuminancelx

Uniformity · U₀%

Artwork artwork200 lx

Target illuminancelx

Minimum illuminancelx

Maximum illuminancelx

Uniformity · U₀%

UGR and observer

Position uses the scene’s coordinates; Y is height. The viewing direction must be nonzero. UGR also requires a known emitting area.

Observer 1

Position · Xm

Position · Ym

Position · Zm

Viewing direction X

Viewing direction Y

Viewing direction Z

Luminaire type

DownlightCeiling grid

Group nameEnabled

Dimming%

Photometric sourceAnalytical model

Initial luminous flux

Initial luminous fluxlm

Rated powerW

Full beam angle°

CCT appearance preset

Analytic colour preview only. Measured CCT and colour-rendering facts remain separate.

Colour rendering

Declared Ra

Unknown

Enter supplied product data; leave blank when unknown. A declaration is not a measurement by this tool.

Linear light colour · R

Linear light colour · G

Linear light colour · B

RGB appearance is a preview, not a spectral colour-rendering simulation.

UGR and observer

Declared emitting area per fixturem²

Unknown

Enter supplied product data; leave blank when unknown. A declaration is not a measurement by this tool.

Ceiling gridQuantity

Rows

Columns

Distance below ceilingm

Edge margin · Xm

Edge margin · Zm

Measured / source facts

Colour temperature: —
Ra: —
R9: —
Duv: —
TM-30 Rf: —
TM-30 Rg: —
SDCM: —

The original source data is not included in this project.

SMD LED stripPerimeter cove

Group nameEnabled

Dimming%

Photometric sourceAnalytical model

Initial luminous flux

Initial luminous fluxlm/m

Rated powerW/m

Full beam angle°

CCT appearance preset

Analytic colour preview only. Measured CCT and colour-rendering facts remain separate.

Colour rendering

Declared Ra

Unknown

Enter supplied product data; leave blank when unknown. A declaration is not a measurement by this tool.

Linear light colour · R

Linear light colour · G

Linear light colour · B

RGB appearance is a preview, not a spectral colour-rendering simulation.

UGR and observer

Declared emitting area per fixturem²

Unknown

Enter supplied product data; leave blank when unknown. A declaration is not a measurement by this tool.

Perimeter cove

Wall X−Wall X+Wall Z−Wall Z+

Cove depthm

Distance below ceilingm

Layout

Measured / source facts

Colour temperature: —
Ra: —
R9: —
Duv: —
TM-30 Rf: —
TM-30 Rg: —
SDCM: —

Measured line-source interpretation

Measured reference length

Minimum valid distance

Enter the tested length and minimum valid distance explicitly. These values are not inferred from the path or the file dimensions.

The original source data is not included in this project.

Track spotlightAttached mounting points

Group nameEnabled

Dimming%

Photometric sourceAnalytical model

Initial luminous flux

Initial luminous fluxlm

Rated powerW

Full beam angle°

CCT appearance preset

Analytic colour preview only. Measured CCT and colour-rendering facts remain separate.

Colour rendering

Declared Ra

Unknown

Enter supplied product data; leave blank when unknown. A declaration is not a measurement by this tool.

Linear light colour · R

Linear light colour · G

Linear light colour · B

RGB appearance is a preview, not a spectral colour-rendering simulation.

UGR and observer

Declared emitting area per fixturem²

Unknown

Enter supplied product data; leave blank when unknown. A declaration is not a measurement by this tool.

Attached mounting points

1 · artwork

Position · Xm

Position · Ym

Position · Zm

Aim point

Position · Xm

Position · Ym

Position · Zm

Measured / source facts

Colour temperature: —
Ra: —
R9: —
Duv: —
TM-30 Rf: —
TM-30 Rg: —
SDCM: —

The original source data is not included in this project.

Generic models are not LEDYI product measurements. Missing product facts remain unknown.

Photometry files 0

No photometry files imported.

Calculation mode

Wall and aiming geometry

Vertical throw · Hm

Full beam angle°

Spacing coefficient · k

Wall lengthm

Illuminated wall heightm

Wall offsetm

Mounting heightm

Aiming heightm

QuantityEnd placement

Explicit assumptions

Reflectance%

Utilisation factor · UF%

Maintenance factor · MF%

Luminous efficacy · ηlm/W

Target illuminancelx

Reference values, not universal legal lighting classes.

Check candidate spacingm

Empirical estimate · Cone geometry and utilisation assumptions do not replace numerical wall sampling.

Section · Empirical estimate

Geometric footprint width: 2.04 m
Suggested spacing: 1.53 m
Actual spacing: 1.5 m
Maximum geometric gap: 0 m
H/2 rule of thumb: 1.4 m
Quantity: 4
Overlap: 26.41 %

Flux and power estimate

Calculation area: 16.8 m²
Required initial flux: —
Flux per fixture: —
Power per fixture: —
Total estimated power: —
Power density: —
Diffuse wall luminance: 25.46 cd/m²

Provide the missing assumptions to evaluate this quantity.

Check an existing product

Flux per fixturelm

Rated powerW

Quantity

Dimming%

Mean illuminance: —
Diffuse wall luminance: —
Rated connected load: —
Operating power: —
Required fixture count: —
Relative surplus: —

Spacing reference tables

Height × beam angle · m
H	10°	15°	24°	36°	40°	60°
1 m	0.13 m	0.2 m	0.32 m	0.49 m	0.55 m	0.87 m
1.5 m	0.2 m	0.3 m	0.48 m	0.73 m	0.82 m	1.3 m
2 m	0.26 m	0.39 m	0.64 m	0.97 m	1.09 m	1.73 m
2.5 m	0.33 m	0.49 m	0.8 m	1.22 m	1.36 m	2.17 m
3 m	0.39 m	0.59 m	0.96 m	1.46 m	1.64 m	2.6 m
3.5 m	0.46 m	0.69 m	1.12 m	1.71 m	1.91 m	3.03 m
4 m	0.52 m	0.79 m	1.28 m	1.95 m	2.18 m	3.46 m
4.5 m	0.59 m	0.89 m	1.43 m	2.19 m	2.46 m	3.9 m
5 m	0.66 m	0.99 m	1.59 m	2.44 m	2.73 m	4.33 m
5.5 m	0.72 m	1.09 m	1.75 m	2.68 m	3 m	4.76 m
6 m	0.79 m	1.18 m	1.91 m	2.92 m	3.28 m	5.2 m

Beam comparison
θ	Geometric footprint width	Actual spacing	Quantity
24°	1.19 m	0.86 m	7
36°	1.82 m	1.2 m	5
60°	3.23 m	2 m	3

Sensitivity to k
k	Actual spacing	Overlap	Quantity
0.7	1.2 m	41.13 %	5
0.75	1.5 m	26.41 %	4
0.8	1.5 m	26.41 %	4

Fixture position schedule

Fixture position schedule
#	Position along wall	Wall offset	Mounting height	Aiming height	W
1 · First fixture	0.75 m	0.5 m	2.7 m	1.4 m	—
2	2.25 m	0.5 m	2.7 m	1.4 m	—
3	3.75 m	0.5 m	2.7 m	1.4 m	—
4	5.25 m	0.5 m	2.7 m	1.4 m	—

Numerical wall probes

No matched numerical wall samples are available for this input version.

Formulas and method

D = 2 H tan(theta/2); S = k D

corner: S = L/(N-1); inset: S = L/N

Phi_initial = E_target A/(UF MF)

L = rho E/pi

UF_direct = integral(E_row dA)/(Phi_row_operating MF)

K2 = integral((E_total-E_all_direct) dA)/integral(E_all_direct dA)

Cone geometry and utilisation assumptions do not replace numerical wall sampling.

Ready to calculate

ExposureEV

Camera, layers and scale

This capability is not connected in this build.

Isolux contours are shown in illuminance view. They interpolate cell-centre samples and do not add numerical resolution; cells with missing samples are excluded.

Colour scale

Scale minimum

Scale maximum

Exposure changes appearance only, not calculated illuminance.

Calculation quality

Calculate this project to see numerical results.

Lighting Simulator

Camera, layers and scale

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