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What Is LiDAR? A Plain-English Guide

by Keith Owens | Jul 5, 2026 | Uncategorized

LiDAR measures distance with laser light to build precise 3D data — the technology behind 3D laser scanning.

What Is LiDAR? A Plain-English Guide — 3D laser scanning by CAD Construct LLC

How LiDAR works

LiDAR (Light Detection and Ranging) fires laser pulses and times their return to measure distance, building millions of precise 3D points. It is the engine inside 3D laser scanning.

What Is LiDAR? A Plain-English Guide — reality capture example

LiDAR vs. photogrammetry

LiDAR measures directly and works in any light; photogrammetry infers 3D from photos. Compare the methods.

What Is LiDAR? A Plain-English Guide — BIM & as-built documentation

Related reading

Reality Capture Explained · Laser Scanning vs. Photogrammetry vs. Drones

FAQ

Is LiDAR the same as laser scanning? Laser scanning uses LiDAR to capture buildings and sites.

Does LiDAR need light? No — it provides its own laser and works in the dark.

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CAD Construct LLC delivers survey-grade 3D laser scanning, as-built drawings, scan-to-BIM, and 360° virtual tours across Pittsburgh & Western PA. Request a free quote or call (800) 967-2627.

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Keith Owens Founder
Keith Owens is the founder of CAD Construct LLC, a drafting and digital documentation service specializing in 3D laser scanning, as-built building documentation, CAD/BIM modeling, and immersive virtual tours. With years of experience in architectural drafting, Keith helps architects, contractors, real estate professionals, and property owners accurately document existing buildings and spaces. Through CAD Construct, he shares insights on laser scanning workflows, digital twins, virtual tour technology, and practical applications of CAD and BIM in real-world projects.
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Written by Keith

Keith Owens is the founder of CAD Construct LLC, a drafting and digital documentation service specializing in 3D laser scanning, as-built building documentation, CAD/BIM modeling, and immersive virtual tours. With years of experience in architectural drafting, Keith helps architects, contractors, real estate professionals, and property owners accurately document existing buildings and spaces. Through CAD Construct, he shares insights on laser scanning workflows, digital twins, virtual tour technology, and practical applications of CAD and BIM in real-world projects.

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