Interior lighting calculations
- Maintained illuminance and uniformity
- UGR and visual comfort
- Vertical and cylindrical illuminance
- Task, ambient and accent balance
- Emergency-lighting coordination input
Analysis & technical consultancyMeasured performance.
Measured performance.
Clear recommendations.
Our technical studies turn lighting intent into verifiable performance. Each analysis is presented as a decision-making tool—not simply a software output—with assumptions, criteria, findings, risks and recommended actions clearly identified.
HALO’s reporting methodology builds on the simulation, lux-study, false-colour, load-analysis and documentation capabilities developed through the former LDI practice.
What we analyse
From a single room to a city-scale night-time environment.
Studies are tailored to the project stage and may be used for concept validation, authority submission, tender review, value engineering, troubleshooting or post-installation verification.
Road & public realm studies
- Road luminance and illuminance
- TI, longitudinal and overall uniformity
- Pedestrian, cycle and conflict-zone studies
- Pole spacing, mounting height and optics
- Light trespass and boundary conditions
Façade luminance assessment
- Average/minimum/max surface values
- Brightness hierarchy and contrast
- Aiming, shielding and spill control
- Material reflectance sensitivity
- Environmental-zone compliance
Climate-based daylight studies
- sDA and ASE assessment
- Daylight factor and point-in-time studies
- Glazing, shading and obstruction testing
- Daylight harvesting opportunities
- LEED/green-building support
Load & operational analysis
- Lighting power density
- Connected and demand load
- Dimming profiles and scene energy
- Control zoning and sensor logic
- Value-engineering comparisons
Luminaire technical review
- Photometry and optical suitability
- LED, driver and dimming compatibility
- Colour quality, flicker and MacAdam steps
- IP/IK, thermal and lifetime evidence
- Mock-up and sample evaluation
Reporting structure
A consultant’s report, not a data dump.
Each report is structured to help clients and design teams understand what the results mean and what should happen next.
01
Inputs
Drawings, model, reflectances, luminaire data, controls and project criteria.
02
Assumptions
Maintenance factors, operating hours, calculation planes and excluded conditions.
03
Criteria
Applicable standards, client targets and sustainability requirements.
04
Results
Tables, contour plans, false-colour views, isolines and comparison charts.
05
Interpretation
Performance gaps, visual risks, coordination concerns and limitations.
06
Recommendations
Prioritised design changes with clear technical reasoning.
Typical deliverables
Outputs prepared for design, approvals and construction.
Calculation report
Executive summary, assumptions, criteria, result tables and compliance statement.
False-colour package
Rendered views showing brightness distribution, hotspots and low-performing zones.
Contour drawings
Lux/luminance isolines over coordinated plans, elevations or façade surfaces.
Option comparison
Side-by-side assessment of spacing, optics, wattage, quantity, cost and energy.
Compliance matrix
Area-by-area comparison of targets, results, status and recommended action.
Product review register
Technical comments covering photometry, drivers, testing, accessories and samples.
Control narrative
Scenes, zoning, schedules, occupancy, daylight response and override requirements.
Site verification
Measurement records, aiming notes, punch list and final commissioning observations.
Technical review enquiry
Send us the model, drawings and project criteria.
We will define the required analysis scope, input checklist, deliverables and programme.