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Laser Distance Sensors for long measuring ranges and millimeter accuracy

With laser distance sensors from Jenoptik, you can measure and monitor distances and positions from 200 millimeters to three kilometers accurate to a few millimeters, and at sample rates in the micro seconds. Non-wearing, without contacting the measured surface.

Laser Distance Sensors for long measuring ranges and millimeter accuracy
Our laser distance sensors - also known as laser rangefinders - can be used to monitor or measure distances, object lengths, provide positional location, and determine fill levels from a few centimeters up to three kilometers without ever physically touching the object. These distances are measured with accuracies of up to a single millimeter at a cycle rate of several milliseconds. The object measured can be a solid, liquid, energy absorbing or radiating hot body, or even in motion. Measurements on natural surfaces with low reflectivity are also possible.

The laser distance sensors offer you considerable flexibility, for example when it comes to positioning work pieces in production processes or crane systems in an extensive container warehouse or harbor. You can measure distances and positions even in bright surroundings, as well as measure fill levels and calculate speeds.

The laser distance sensors are robust and deliver precise and reliable results in harsh industrial applications. A range of various measuring methods such as phase comparison and the time-of-flight measuring principle are adopted to ensure this is the case: These methods are extremely reliable and are not susceptible to interference.

The compact footprint and standard interface connection options makes these units ideal for integration into your automation and process control program. The units have RS232, RS422, RS485, Profibus, SSI, digital switching and analog output allowing the sensor to readily adapt into existing and new automation systems. The ruggedized housing enables placement where needed – even in harsh industrial environments.

Benefits

  • Powerful and fast: Measure distances of up to three kilometers with up to 30 kilohertz.
  • Flexible: Measure solid and liquid surfaces, either moving or stationary, radiating hot or cold.
  • Accurate and efficient: Measure with millimeter accuracy and in a non-wearing, non-contact fashion.
  • Reliable and robust: Dependable use in a wide range of harsh industrial environments.
  • Easy to integrate: Simple to install thanks to standard interfaces and compact construction.

Fields of application

  • Automation: Level measurement, process control.
  • Industrial metrology:  Non-contact distance, length, and height measurement.
  • Transport and conveyor technology: Distance and height measurement accurate to the millimeter, vehicle detection
  • Steel production and rolling mills: Process control, detection, position and thickness measurement for slabs.
  • Scanning systems: Rapid distance measurement.

Choose a Laser Distance Sensor that matches your requirements:

LDM7x - the light and fast one for industrial automation

LDM7x Series

The laser distance sensors of the LDM7x series are designed for measurements of moving targets. The sensor is characterized by an above-average measured value output frequency, up to 40 kilohertz. It can be used to detect objects in industrial automation.

The sensor is also suitable for monitoring defined areas during transport. The sensor is offered as a complete device with industry standard IP67 and for OEM partners as a measuring module for integration into modular systems.

Benefits:

  • Fast: Measuring up to 40 kilohertz
  • Compact: Characterized by its small size and a weight of 200 g
  • Powerful: Measurements on 70 m at 10% reflectivity on natural surfaces

Technical facts

Feature
Value
Invisible measuring:
905 nm
Measuring reflective surfaces with 10% reflectivity:
70 m
Measuring refelctive surfaces or special objectives:
270 m
Measuring accuracy:
60 mm
Measuring frequency:Up to 40 kHz
Eye safe:Class 1 laser
Interface options:
RS232, RS422
Measuring functions (excerpt):
User-specific parameterization, switching outputs

Download

LDM5x – high-precision measurements at hot ambient temperatures

LUMOS Series

The LDM5x series of laser distance sensors has a measurement frequency of 100 Hz enabling high precision measurements or distance monitoring up to 200 meters for reflective surfaces. The measuring distance for natural surfaces (< 10% reflectance) is 85 meters. Both the 200 meter and 85 meter measurements have an accuracy of ±1 mm. LDM5x series devices are ideal for measuring hot surfaces such continuous cast steel slabs and billets, thin cast slabs, blooms, etc. The LDM5x series excels in bright light outdoor conditions where large quantities of stray, direct, and indirect sun light may interfere.

LDM5x series devices contain an OLED touch screen as the MMI for easy configuration and parameterization. The LDM5x series uses a visible (red) Eye Safe Class 2 laser emitting at 655 nm which also may be used to align the range finder visually to the target. These devices have met the stringent IP67 / NEMA 6 requirements. The LDM5x series has fully integrated RS-232, RS-422, RS-485, Profibus, and SSI compatible connection options, switching outputs and the ability to switch between analog and digital output.

Options for the LDM5x series laser distance sensors include: internal heater (for cold climate operations), three digital outputs / trigger for remote signal generation and control, plus a case hardened chassis for EMI protection, allowing this small, compact unit to be fully and easily integrated into existing and new systems and automation plants.

Benefits

  • Fast: Measurement frequency 100 Hz
  • Accurate: ±1 mm accuracy, within 85 m range on 10% reflective surface, and 200 m range on radiant surface
  • Easy to operate and integrate: MMI utilizes an OLED touchscreen along with the standard suite of RS, SSI, analog, and digital connectors
  • Safe: Utilizes visible 655 nm eye-safe class 2 laser for both measuring and visual alignment

Technical facts

FeatureValue
Visible measuring beam:
655 nm
Measuring range natural surfaces:
85 m
Measuring reflective surfaces:

200 m

Measuring accuracy:
Up to 1 mm
Measuring frequency:Up to 100 Hz
Eye safe:Class 2 laser (compliant)
Interface options:
RS232, RS422, RS485, SSI, Profibus, analog
Measuring functions (excerpt):
User-specific parameterization, switching outputs,
triggers, synchronization
For more information, please refer to downloadable PDF datasheet below.

Downloads

LDS30 – the small one for system integrations

Jenoptik LDS30 Laser Distance Sensor

The compact LDS30 series laser distance sensors are capable of measuring low reflectance (natural) surfaces with frequencies of 30 kHz. The LDS30 series was designed specifically for the scanning and proximity sensing applications.

The LDS30 series uses the time of flight measuring principles along with an eye-safe class 1 laser (wavelength 905 nm) to achieve a range of 30 m for surfaces with 10% reflectance. In conjunction with reflective surfaces or special targets this range may be increased to distances of up to 250 meters.

The extremely compact, lightweight, case hardened chassis makes the LDS30 series laser rangefinder resistant to normal impact and shock associated with industrial applications. The chassis improvements also make the LDS30 series impervious to dust infiltration and moisture impregnation (IP67 / NEMA 6).

Benefits

  • Fast: Measurement frequency 30 kHz
  • Accurate: ±50 mm accuracy within 30 m range on surfaces with 10% reflectance surfaces, 250 m range on surfaces with 25% reflectance
  • Compact: Can be integrated into small systems
  • Rugged: Meets IP67/ NEMA 6 requirements
  • Flexible: Interfaces, operating modes and outputs can be configured and parameterized for specific users, with external triggering available to select as required
  • Eye-safe: 905 nm class 1 laser.

Technical facts

FeatureValue
Invisible measuring beam:
905 nm
Measuring range natural surfaces 10% reflectivity:
30 m
Measuring range reflective surfaces or special targets:250 m
Measuring accuracy:50 mm
Measuring frequency:Up to 30 kHz (binary output)
Eye safe:Class 1 laser
Standard interface options:
RS-232, RS-422, analog
Measuring functions (excerpt):User-specific parameterization, switching outputs, trigger
For more information, please refer to downloadable PDF data sheet below.

Downloads

LDM301 – for speed measurements in port

LDM301 Series

The laser distance sensors that make up the LDM301 series use a measured time-of-flight principle to measure distances of 300 m for natural surfaces and 3000 m for reflective surfaces. The fast time-of-flight method enables the system also to calculate the speed of the object.

Measurements may occur at a frequency of 10 kHz. These high frequency distance measurements enable the LDM301 series of products also to determine the speed of the object. High rates of measurement make the LDM301 particularly useful in continuous process control associated with chemical, steel, refining, and other high volume manufacturing operations.

Jenoptik’s LDM301 series has been built to meet or exceed the demanding IP67 internal protection standards. LDM301 series IP67 certification means that these units will survive in the harshest conditions of temperature (-40 °C to +60 °C), rain, sleet, and snow as well as corrosive, abrasive, and salt fog environments.

Benefits

  • Powerful: Measure distances of up to 3000 meters
  • Convenient & Flexible: With internal heating systems, status indicator lights, and sighting mechanism, standards. The modular design enables these standards to be replaced or custom additions made with little change to the base unit.

Technical facts

FeatureValue
Invisible measuring beam:
905 nm
Pin-point alignment:
Red pilot laser (class 2 laser)
Measuring range natural surfaces:
300 m
Measuring range reflective surfaces:3,000 m
Measuring accuracy:60 mm
Measuring frequency:Up to 10 Hz (model dependent)
Eye safe:Class 1 laser
Standard interface options:
RS-232, RS-422, SSI, Profibus, analog
Measuring functions (excerpt):User-specific parameterization, switchable outputs, triggers and synchronization
For more information, please refer to downloadable PDF data sheet below.



Downloads

LDM302 – for measurements on surfaces of low reflectance

LDM302 Series

The LDM302 series of laser distance sensors is specifically built to measure distances with high precision for surfaces of low reflectance (e. g. asphalt, grass, oxidized steel and aluminum). The LDM302 series is capable of measuring moving or static objects up to 3,000 meters with low reflectance.

LDM302’s have proven themselves in the field by measuring moving objects with a reflectance of 6% at distances of 200 meters (Ship Docking Trials). LDM302’s have proven successful in the control of container moving trams, overhead crane positioning, load retrieval, and load setting trials. The LDM302 has been used on aircraft to calculate the altitude of the airframe during flight.

LDM302 series laser range finders rely upon the proven time-of-flight measurements (also used in the LDM301’s and LSD30) to make their distance and speed measurements. The time-of-flight method allows the LDM302 to measure moving objects even with less than 3% reflectance at distances of 50 meters.

The fully customizable LDM302 modular configuration allows these laser range finders to be easily adapted to the harshest environments while maintaining high precision and accuracy. The ability to select either fixed or variable sampling rates is accommodated by this modularity.

The compact, modular design combined with existing or customizable options enables the LDM302 to be retrofitted into existing systems as easily as new builds for real time, real world, distance and speed measurements with low reflection bodies under critical operating conditions.

Benefits

  • Precise: Measurements ± a few millimeter
  • Easy to use: Visible laser enables naked eye alignment of range finding system
  • Robust: Case hardened chassis with o-ring seals to keep dust, water spray, and the elements out of the optical system. Optional internal heating elements extend operating range from -40 oC to +50 oC.

Technical facts

FeatureValue
Invisible measuring beam:905 nm
Pin-point alignment: red pilot laser (class 2 laser)
Measuring range natural surfaces 6% reflectivity:200 m
Measuring range natural surfaces 80% reflectivity:500 m
Measuring range reflective surfaces:3,000 m
Measuring accuracy:60 mm
Measuring frequency:Up to 100 Hz
Eye safe:Class 1 laser
Interface options: RS-232, RS-422, analog
Measuring functions (excerpt):User-specific parameterization, switchable outputs, triggers and synchronization
For more information, please refer to downloadable PDF data sheet below.

Downloads

LDM41/42/43 serie – measure distances of up to 150 meters

LDM Laser Distance Sensor

Distance measurements with millimeter accuracy can be obtained by using one of our LDM4x series laser distance sensors allowing accurate and precise object locating.

The LDM4x series can measure distances of up to 150 meters, at measurement rates of up to 50 Hz. The ability to measure with accuracy of a few millimeters is made possible by phase comparison method.

The red laser light emitted by the LDM4x series laser distance sensors enables visual confirmation, alignment, and targeting. Applications for the LDM40 laser distance sensors include level monitoring (liquid and solid), positional reference and location of objects, and collision prevention of moving objects (e. g. cranes, lifts, conveyance systems).

The LDM4x series is capable of measuring 30 meter distances on natural surfaces with millimeter precision without contacting the measuring surface eliminating wear and the associated error. The LDM4x series is able to perform these highly accurate measurements using an eye-safe class 2 laser.

Jenoptik’s LDM4x series features a case hardened chassis that is seal from the environment in order to keep dust, water spray, and the weather out of the optical systems. The LDM4x sensors may be equipped with internal heating elements increasing the operating range from +50 oC through -40 oC.

Benefits

  • Precise: Measurements ± a few millimeters, ±3mm or ±5mm with heater
  • Easy to use: Visible laser enables naked eye alignment of range finding system, 650nm (red).

Technical facts

FeatureValue
Invisible measuring beam:
650 nm
Measurement range natural surfaces:
30 m
Measurement range reflective surfaces:150 m
Measurement accuracy:Up to 3 mm
Measurement frequency:Up to 50 Hz
Eye safe:Class 2 laser (compliant)
Various interfaces:
RS-232, RS-422, SSI, Profibus, analog
Measurement functions (excerpt):User-specific parameterization, switchable outputs, triggers, synchronization
For more information, please refer to downloadable PDF data sheet below.

Downloads

Technical facts overview: Laser distance sensors


Product series
Range on
reflectors
Range on
natural surfaces
Accuracy,
maximum
Frequency,
maximum
Interface
options
LDM 7x
270 m
70 m (10% refl.)
60 mm
40 kHz
RS232, RS422
LDM 5x
200 m
85 m (6% refl.)
3,9 mm
100 Hz
RS232, RS422, RS485
Profibus, SSI, analog
LDM41/42/43150 m
30 m
3 mm
10 Hz / 50 Hz possible
RS232, RS422,
Profibus, SSI, analog
LDM3013000 m
300 m (80% refl.)
60 mm
2 kHz / 10 kHz possible
RS232, RS422,
Profibus, SSI, analog
LDM3023000 m
200 m (6% refl.)
60 mm
100 Hz
RS232, RS422, analog
LDS30250 m
30 m (10% refl.)
50 mm
30 kHz
RS232, RS422, analog

Do you have questions? Please contact us for more information.

Sales Laser Distance Sensors

+49 3641 65-3125

+81 045-345-0003

+81 045-345-0013

Light & Optics | North America

1.561.881.7400

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