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DLD-50G 2D Scanning LiDAR — Measures Surfaces, Not Reflectors

A diffuse-remission single-line scanner for targets that can't cooperate: bulk piles, passing vehicles, irregular objects. Point it at the surface itself and read the profile.

  • Reflector-free: no plates, tape or corner cubes to fit
  • Full cross-section distance profile on every rotation
  • Works on natural, non-cooperative surfaces
  • Compact rotating-head 2D scanner format
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DLD-50G diffuse-reflective 2D single-line scanning LiDAR

Why Reflector-Free Matters

Every reflector-based measuring system carries a hidden bill: someone must mount the target, keep it aligned, and keep it clean for the life of the installation. On bulk materials, moving vehicles and irregular loads that bill can never even be paid — there is nowhere to put the reflector. The DLD-50G is built as a diffuse-remission measuring type: it evaluates the light scattered back by the object's own surface, so the object is the target.

Being a 2D single-line scanner, it does not return one distance but a whole profile — each rotation of the scan head yields the distance distribution across a full cross-section of the scene. That turns "how far is the pile?" into "what shape is the pile?", which is usually the question production actually needed answered.

This is a perception/measurement LiDAR, not an IEC 61496 certified safety component; do not use it as the sole means of personnel protection. For safety functions, see the ST27 Type 3 safety laser scanner.

Start with the Measurement You Need

Reflector-free scanning is useful when you need to see a shape, not just detect that something is present. Match the intended measurement to your material and installation before selecting a scanner configuration.

A profile across a moving load

Define which outline matters: width, height, edge position or clearance. Check whether brackets, conveyor structure or the load itself can hide that part of the surface from the scan plane. Application feasibility requires a sample test.

A natural surface without a target plate

Provide examples of the actual material, including dark, wet, shiny or irregular batches. Reflector-free does not mean independent of surface properties: the returned signal still has to be usable at the required distance and angle.

A complete measurement system

A scan profile is input data, not a finished volume or dimensional result. Define how your host will transform the data, calibrate against a reference, and combine successive profiles if motion is part of the measurement.

If you only need distance to one spot, compare a DDA-Y / DDB-Y single-point distance sensor before specifying a scanning system. If you need profiles, start with the industrial LiDAR selection guide and then confirm the model-specific interface and ratings.

Diffuse Remission vs Reflector Measurement

Reflector-based sensorreflector platemust be fitted & kept clean✗ impossible on piles, trucks,random or moving objectsDLD-50G diffuse remissionnatural surface (bulk pile)✓ the object itself is the target — nothing to installSchematic. Diffuse mode evaluates the scattered return; scan head rotation turns single readings into a cross-section profile.

Original DAIDISIKE schematic: reflector systems measure a target you installed; the DLD-50G measures the world as it is.

Confirmed Data — and What We Won't Guess

Product categoryLaser scanning LiDAR (DAIDISIKE DLD series)
Scan architecture2D single-line — one cross-section distance profile per rotation
Measuring typeDiffuse remission; no reflector or cooperative target required
ModelDLD-50G (sole listed model; no documented sub-variants)

The factory has not yet published range, accuracy, field of view, scan frequency, interface, supply voltage, laser class, IP rating or operating temperature for this model — so this page does not either. Every one of those figures can be confirmed against your application through the inquiry form before you specify. If you need committed numbers today, the DLD-50D and DLD-100D publish full datasheets.

Typical Use Patterns

Bulk Material Profiles

Sweep stockpiles, hoppers and bunkers whose surfaces could never carry a reflector.

Vehicle Contour Sensing

Profile trucks and trailers passing a gate directly off bodywork — no tags, no plates.

Moving Equipment Position

Track cranes, trolleys and shuttles from their own structure where mounting targets is impractical.

Cross-Section Monitoring

Watch a doorway, tunnel or conveyor cross-section as a full 2D profile instead of isolated beams.

A Practical Sample-Evaluation Checklist

Agree the measurement requirement before judging a demonstration. These checks help turn a promising profile into an informed buying decision without assuming unconfirmed DLD-50G specifications.

  1. Define a useful result. State the feature you need to detect or measure, the permitted error, object motion and the update time your controller requires. Bring a drawing or photograph showing the proposed sensor position.
  2. Test representative targets. Include the least reflective relevant surface, expected viewing angles and the farthest working position. Compare repeated scans against a known reference; record missing or unstable readings as well as successful ones.
  3. Reproduce the installation conditions. Evaluate the expected lighting, vibration, dust and surface changes. Plan access to inspect and clean the optical window, and avoid assuming a bench result covers an outdoor installation.
  4. Confirm the integration in writing. Obtain the ordered model's electrical ratings, connector drawing, data interface and software requirements. Test loss of valid data and the host's response before production use.

Send this brief through our application support contact so the recommendation can address the actual measurement. For alternatives with published ratings, compare the DLD-50D and DLD-100D; sharing a product family does not make their wiring or software interchangeable.

Reference Manual & Technical Confirmation

PDF · English · DLD-50D reference · 22 pages · approximately 25.5 MB

DLD-50D User Manual — Supplied Reference

The supplied document describes the DLD-50D family. It is available here as a reference, not as proof of the DLD-50G's electrical, optical or communication specifications.

Before connecting a DLD-50G, request its confirmed supply voltage, connector pinout and protocol for the exact delivered version. Do not copy the DLD-50D wiring or configuration solely because this reference is linked here. You can also browse our technical download center for other model documents.

Frequently Asked Questions

Why is a DLD-50D manual provided on the DLD-50G page?

It is the supplied DLD-50D reference manual, provided for background on that model's operation and software workflow. It names the DLD-50D variants; it does not establish the DLD-50G's range, supply, connector pinout or protocol compatibility. Confirm the DLD-50G-specific documentation and ordered configuration with us before wiring or commissioning.

What problem does a diffuse-remission LiDAR actually solve?

It removes the cooperative target from the equation. Reflector-based measurement needs a plate, tape or corner-cube mounted on whatever you measure — impossible on a coal pile, a moving truck or a random carton. The DLD-50G reads the faint diffuse return from the object's own surface, so the object itself is the target, with nothing to install, align or clean.

How is this different from a single-point laser distance sensor?

A single-point sensor gives you one number per instant. The DLD-50G rotates its measurement plane and delivers a whole cross-sectional distance profile every revolution — the outline of a pile, the flank of a vehicle, the gap profile of a doorway. Where one distance is not enough information, a scan line is the cheapest upgrade path.

Which surfaces work, and which are difficult?

Diffuse measurement lives off scattered light, so matte and semi-matte natural surfaces — earth, timber, cartons, painted steel, fabric — are its home ground. Mirror-like, jet-black or transparent surfaces return less usable signal for any diffuse-mode LiDAR. Tell us your actual material and we will confirm feasibility against the factory data before you commit.

Why is there no range or accuracy figure on this page?

Because the factory has not released confirmed numbers for the DLD-50G, and we will not print a figure we cannot stand behind. What is confirmed: product category (laser scanning LiDAR), scan type (2D single-line) and measuring principle (diffuse remission, reflector-free). For a committed range and accuracy today, look at the published DLD-50D (50 m @90%) or DLD-100D (100 m @90%).

Can the DLD-50G guard a machine or protect personnel?

No. This is a perception/measurement LiDAR, not an IEC 61496 certified safety component; do not use it as the sole means of personnel protection. No safety rating or OSSD output is published for it. Where the scanner must stop a machine to protect a person, specify our ST27 Type 3 safety laser scanner instead.

What should I include in an inquiry to get a fast, accurate answer?

Four things: the surface you must measure (material and colour), the working distance you need, the ambient conditions (indoor/outdoor, dust, sunlight) and the interface your controller expects. With those we can confirm within days whether the DLD-50G fits or whether a sibling model with published specs serves you better.

What are the MOQ and lead time for the DLD-50G?

MOQ is 1 unit for evaluation, and we encourage a bench sample first precisely because this model's public spec set is still thin. Lead time is confirmed case by case with the factory — typically within the 3–15 day window our LiDAR line ships in — and stated in writing on the quotation. OEM discussions are welcome once your sample validates the principle.