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
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.
Diffuse Remission vs Reflector Measurement
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 category | Laser scanning LiDAR (DAIDISIKE DLD series) |
|---|---|
| Scan architecture | 2D single-line — one cross-section distance profile per rotation |
| Measuring type | Diffuse remission; no reflector or cooperative target required |
| Model | DLD-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.
Frequently Asked Questions
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.
Safety Light Curtain — Customer Cases
Real installations from DAIDISIKE clients. Click any case to view in full. Filter by scenario to quickly find a similar setup.