Detailed LDR25K1 Specifications
The technical material below is retained for this model only. Do not transfer a range, pulse, interface, mechanical or safety value from another 1064 nm product.
Specifications
The tables below retain the supplied model record except for entries explicitly withheld after a comparison with the current model PDF. A value, option or condition from another model is not interchangeable. General explanations are separated from model-specific entries.
Source-review note
The previous summary differs from the current document in divergence, range, operating temperature and interface. Those entries are withheld. A broken historical responsive-image binding has also been removed.
Current LDR25K1 document — source checked 13 September 2026. On a small screen, swipe wide tables horizontally to read every column.
| Parameter | Specification |
|---|---|
| Wavelength | 1.064 ± 0.003 μm |
| Pulse Energy | ≥ 25 mJ |
| Measurement Range (Ranging) | Withheld pending a corrected, controlled model specification. See the source-review note above. |
| Measurement Range (Designation) | ≥ 2 km |
| Ranging Accuracy | ±2 m |
| Ranging Frequency | 1 Hz / 5 Hz / Single-shot |
| Designation Frequency | 20 Hz (Coded) |
| Beam Divergence | Withheld pending a corrected, controlled model specification. See the source-review note above. |
| Hit Rate | ≥ 98% |
| Communication Interface | Withheld pending a corrected, controlled model specification. See the source-review note above. |
| Supply Voltage | 20–28 V |
| Power Consumption | ≤ 50 W (Avg) |
| Operating Temperature | Withheld pending a corrected, controlled model specification. See the source-review note above. |
| Dimensions | 68 mm × 52 mm × 90 mm |
| Weight | ≤ 380 g |
|
Pin No. |
Signal Name |
Description |
|---|---|---|
|
1 |
24V |
Power supply + |
|
2 |
24V |
Power supply + |
|
3 |
24V GND |
Power return (–) |
|
4 |
24V GND |
Power return (–) |
|
5 |
— |
— |
|
6 |
TTL_RX |
Host → laser rangefinder/designator module |
|
7 |
TTL_TX |
Laser rangefinder/designator module → host |
|
8 |
TTL_GND |
Serial port ground |
Technical drawings
Evidence status: published data is not a substitute for the ordered revision, a serial-number test report or a laser-classification report. A standard mentioned in a table is not proof of third-party certification.
Model-specific conditions and limits
Conditions are retained only when the source states them. They are not reconstructed from a nominal range or wavelength.
Operating conditions
Read the value together with its qualifier
A minimum, maximum, typical value and tolerance are different kinds of statement. “≥” is a lower bound and “≤” is an upper bound; neither is an exact measurement. A nominal value without tolerance does not establish a tolerance. Preserve the units and the condition printed beside every entry.
Keep operating modes separate
If the original table lists more than one operating mode, each rate, duration and stability statement belongs to its stated mode. This page does not combine the most favorable entries into a new operating specification. A published duration is not evidence of unrestricted continuous operation.
Environment and document revision
Storage limits describe a non-operating condition and must not be substituted for powered-operation limits. A test-standard name without the method, severity, configuration and outcome is an incomplete qualification record. Request the relevant report for the exact supplied revision; do not describe a reference to a standard as a blanket certification.
Safety review
1064 nm is outside normal visual perception. A beam that cannot be seen can still be hazardous; brightness or a camera image is not a safety measurement. Laser safety assessment must address the complete product and its accessible emission, not only the source wavelength. IEC 60825-1:2014 — Safety of laser products; FDA — Frequently Asked Questions About Lasers.
Pulsed Time-of-Flight Ranging
Technical principle
Laser emission: a high-level overview
A laser combines an energized gain medium with optical feedback to produce stimulated emission. Solid-state lasers use a solid host for the active species. The wavelength name alone does not identify a particular host material, pump wavelength or cavity construction, so this page does not infer those internal parts for LDR25K1. FDA — Frequently Asked Questions About Lasers.
What a pulsed-source specification describes
Pulse energy describes energy in one optical pulse. Pulse duration describes its temporal extent under a stated width convention. Repetition rate describes how often pulses occur. These quantities must not be substituted for each other: an energy specification is not a power specification, and a rate does not describe a waveform. Electrical input power and optical output also refer to different quantities.
Beam size and angular spread are different measurements
A beam diameter applies at a specified measurement plane. Divergence describes angular spreading rather than diameter at one location. Different width definitions and full-angle versus half-angle conventions can give different numerical descriptions of the same beam. Where the model record does not identify its convention, the comparison remains incomplete. ISO 11146-1:2021 — Beam-width, divergence and propagation measurement terminology.
Accuracy, resolution and stability are separate terms
Resolution describes the reported increment or discrimination scale; accuracy concerns the difference between a measurement and a reference. Stability concerns variation over an interval or set of conditions. A small displayed increment does not by itself establish small error, and one stability metric does not establish another. The original table’s labels and qualifiers remain important even when two entries share a numerical value.
Physical explanation versus product evidence
A scientific paper can explain a phenomenon without testing this product. Its measured output, material recipe, internal geometry or performance cannot be transferred to LDR25K1. A manufacturer's published record, a unit test, a qualification report and an independent standard each answer a different question. The references below are explicitly identified by that role.
Invisible radiation and responsible documentation
Eye and skin hazards depend on exposure, not on whether an observer sees a spot. A product page is not a safe operating procedure. Applicable controls and personnel responsibilities require a qualified safety review, and the product must retain its warnings and approved instructions. OSHA — Laser Hazards.
Pulse energy describes emitted energy per pulse; its effect cannot be separated from pulse width, divergence, optical losses, receiver threshold and the stated target/atmosphere conditions. It is not a substitute for a model-specific near- or long-range acceptance test.
Source-stated application context
Application labels indicate evaluation context, not automatic fitness for a finished system.
The current model table lists ±2 m ranging accuracy and 1 Hz, 5 Hz or single-shot ranging entries. These values must remain distinct from the measurement-range and beam-divergence fields that the reviewed website currently withholds. No unqualified distance capability is reconstructed from the product family or the retained URL.
LDR25K1’s published mechanical envelope provides a clearer differentiator than a generic family title. At the same time, the current record identifies source discrepancies involving operating temperature and interface. Those items need corrected controlled evidence, so the product description does not infer environmental coverage or protocol support from another model.
Confirm short- and long-distance acceptance conditions
- Define minimum distance, target material, reflectance, size and incidence angle.
- Check receiver recovery, optical-axis overlap and strong-return handling at the intended near limit.
- Verify supply tolerance, peak current, grounding, interface levels, connector and timing with the ordered revision.
- For long-distance acceptance, state target geometry, visibility, weather, background and required detection probability.
- Test with the installed window, boresight, field of view, enclosure and thermal path rather than a bare module alone.
- Evaluate accessible emission, labels and failure conditions again for the finished laser product under IEC 60825-1.
Questions to resolve before design release
Is LDR25K1’s ≥25 mJ entry an every-pulse minimum?
The current controlled PDF labels it Pulse Average Energy, so the average qualifier is retained. It is not converted into a minimum for every individual pulse. The same document specifies 1.064 ±0.003 µm; unresolved range, divergence and interface entries stay separate.
What package dimensions distinguish LDR25K1?
The current table lists 68 × 52 × 90 mm and a mass limit of 380 g. These are the documented model-specific mechanical values. The controlled drawing is still needed for tolerances and the actual ordered configuration rather than relying on a related product’s outline.
Does the ±2 m accuracy entry establish measurement range?
No. Accuracy and maximum qualified measurement distance are separate specifications. LDR25K1’s current page retains ±2 m as an accuracy entry while withholding the ranging-distance field. The missing distance cannot be recovered by combining the accuracy number with a family-level description.
Why are some LDR25K1 fields not promoted in the title?
The current source-review note identifies disagreement in range, divergence, operating temperature and interface. Those fields remain unconfirmed in the public specification. Compare the documented energy, wavelength and package, and obtain corrected controlled values for the unresolved fields before choosing a configuration.
What repetition-rate information is available for ranging?
The table lists 1 Hz, 5 Hz and single-shot ranging entries. It does not make every listed operating function equivalent or establish an arbitrary continuous regime. Keep the current model’s conditions attached when reviewing performance and do not borrow another product’s duty or frequency limits.
Product evidence and general technical context
The model PDF controls model claims. Public references below explain general engineering principles only.
- LDR25K1 controlled model datasheetModel identity and the product-specific values and qualifications discussed on this page.
- IEC 60825-1:2014 — laser-product classificationEquipment classification and accessible-emission assessment; wavelength alone does not certify the assembled product.