Photometric lighting design

See the lighting plan before you buy the lights. A photometric study helps turn fixture choices, mounting positions, and project goals into a layout you can evaluate.

Photometric lighting design application illustration

What a photometric study helps you see

A lighting calculation models the distribution of light across a defined space. It can help compare proposed fixture locations, identify dark areas, and examine how evenly light reaches the surfaces that matter. The result depends on the quality of the project dimensions, fixture data, and modeling assumptions.

A useful review goes beyond a single average. Look at minimum values, changes between adjacent areas, and whether the calculation plane represents the actual task. A warehouse floor, an outdoor walkway, and a playing surface ask different questions of the lighting design.

Start with the right information

Bring a dimensioned plan, the proposed mounting height, and the way each area is used. For outdoor sites, include property lines, nearby buildings, existing poles, and any areas where light should be limited. For indoor projects, note racks, obstructions, and ceiling conditions.

If fixtures have already been selected, share the exact model and its photometric file. A different optic, wattage setting, or mounting angle can change the predicted result. A calculation based on a similar-looking fixture may not represent the product you install.

Use the plan to compare options

Review layout alternatives before committing to equipment. A different distribution pattern or mounting position may solve a coverage issue more effectively than simply increasing output. Ask which inputs are confirmed and which are assumptions.

LightExpert can help you work through the planning questions and discuss photometric services for your project. Call with the site details to establish the scope, deliverables, and next steps.

Common questions

Can a plan be prepared from a sketch?

A clear sketch can start a conversation. Reliable dimensions, mounting positions, and project requirements are still needed for a useful calculation.

Does a photometric plan guarantee permit approval?

No. Approval depends on the jurisdiction, project requirements, and the submitted documents. Establish those requirements before deciding the scope of a study.

Your project starts here

Have a space in mind?

Tell us what you’re lighting. We’ll help you plan the next step.

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