Knowledge
905 nm engineering
notes
How DToF ranging works, how to read our spec sheets correctly, and how to integrate a module the first time without the usual bring-up mistakes — written by the team that builds the modules, for the engineers integrating them.
01 / GUIDES
PHYSICS · SPECS · INTEGRATION
Fundamentals
Engineering guides
The physics behind DToF ranging, how to read a spec sheet's accuracy formula correctly, and application-specific integration notes for night vision, UAVs and robotics.
Short-Range Single-Point DToF Sensors for Industrial & Robotics
Not every ranging problem needs kilometres of reach. For AGVs, robot arms and fixed automation sensing, a small, low-power, single-point DToF module solves the problem a scanning LiDAR is overkill for.
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Drone Altimetry & Obstacle Sensing with Laser Modules
Altitude hold and forward obstacle ranging ask a laser module to do two different jobs. Here's how weight budget, adaptive frequency and — for gimbal payloads — an integrated gyroscope shape the module choice for each.
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Laser Rangefinders in Night Vision & Thermal Devices
Why a ranging module has to disappear into a night-vision or thermal housing rather than compete with it for weight and space — and how the SPD-mini and tube-series lines are built around exactly that constraint.
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UART-TTL Integration Guide for LRF Modules
Wiring, power sequencing, frame parsing and the mistakes that most often stall a first bring-up — a practical walkthrough of the UART-TTL interface common to every module on this site.
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Understanding Rangefinder Accuracy Specs: ±m vs %
Why every accuracy line on our spec sheets has two parts — a fixed near-range figure and a distance-proportional term — and how to read it correctly for the distance band your system actually operates in.
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905 nm vs 1535 nm: Choosing the Right Wavelength
Two wavelengths dominate laser rangefinding for very different reasons — one because silicon detectors make it cheap and compact, the other because it clears the eye's focusing optics entirely. Here's how the trade-off actually works, and why this site is 905 nm only.
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How 905 nm DToF Laser Ranging Works
Inside the pulse-out, photon-back measurement loop that turns a 905 nm laser diode and an avalanche photodiode into a distance reading — and why the numbers on our spec sheets (frequency, valid measurement rate, false alarm rate) describe that loop, not just a laser.
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02 / PRODUCT NOTES
DEEP DIVES · NEW LINES · OEM PROCESS
Product-linked
Product notes
Deep dives on specific modules and lines, and how our OEM/ODM process actually runs from RFQ to production.
From Sample to Production: Our OEM/ODM Customization Process
What we can customize, what stays fixed regardless of customization, and the practical path from an RFQ to a production run — written for engineers scoping a custom module program, not a sales page.
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Introducing Our Short-Range DToF Sensor Line
Eight new 905 nm DToF sensors covering 0.05 m to 1,500 m — from a 1.5 g chip-scale sensor for drone altitude hold to a 20 g industrial LiDAR for kilometre-class crane and traffic-safety ranging. Here's how the line is organized and where each format fits.
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Inside the LRF3000A1: 3,000 Metres from 12 Grams
Our flagship module reaches past 3,000 m from a 13.5 × 25.1 × 27.8 mm, 12-gram body. Here's the engineering behind that number, spec by spec, and what it honestly means at the edge of its range.
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