Laser measurement system


Performance, versatility, ease of use
HPI-3D laser measurement system is the result of more than 20 years of experience in of high-precision laser interferometry field. The instrument represents a “know-how” in the field of laser measurements with the best parameters. All this goes along with the highest quality, a very rich set of accessories and options, ease of use and compactness. Instructions and full version of the software are available in our download page.
Interferometer features
100 pm natural resolution
basic resolution of the laser interferometers based on He-Ne laser is 158.2 nm. The HPI-3D uses a special combination of heterodyne and homodyne optical configurations to achieve a basic resolution of 100 pm for single-pass optics and 50 pm for double-pass optics with excellent sub-nanometric measurement linearity. HPI-3D signal processing path provides the highest resolution at any measured speed.
Vibration measurements up to 100 kHz
When connecting HPI-3D over USB port it is possible to monitor vibrations of a measured object at frequencies up to 100 kHz with resolutions down to pico-meters. Such parameters allow using the instrument in the field so far reserved for specialised laser vibrometers. Special optics with very light reflection index can be used additionally to improve accuracy.
Dynamic measurements up to 100 000 samples per second
CNC or CMM machine are mechanical devices that requires calibration from time to time. Proper tools like HPI-3D offer unique machine tools analysis capability. Parameters like positioning, velocity or acceleration are picked at really high rate. The information gathered by HPI-3D can be used for further analysis with specialised mathematical software or for machine calibration.
Max measurable velocity up to +/- 7m/s
In today’s industry exists a clear trend of increasing processing speed of CNC machines. Testing of such machines requires an instrument capable to handle high or very high velocity. HPI-3D with its unrivalled high frequency architecture offers a standard measurable velocity of ± 7 m/s and an option of an unimaginable ± 20 m/s!


User friendly software
The HPI Software has always being and is developed on the base of constant feedback from users. It is simple to use yet with rich set of features. Measurements and analysis are performed from a single application with common interface – fast and easy!
Free software updates
Full version of the HPI-3D software is available for download on our webpage. The update is completely free. We provide lifetime software support.
Easy to align and position
The most difficult part of each laser interferometer measurement is alignment of the laser beam path. One of built-in alignment tools in HPI-3D is laser head position indicator. It shows the pitch and yaw angles. It helps to reduce setup time, especially on more complex machine tools.
Laser beam position system
An important part of the HPI-3D system is beam position subsystem. It allows instantaneous measurements in three directions (i.e. along and perpendicular to the laser beam). 3D subsystem is responsible for improvement of laser measurement accuracy, and provides straightness data and responds for simple beam path alignment
Compact construction
Compact laser head is a self-contained unit. Just content it to PC and power line, no extra cable or control units are required.
Portability in a small sturdy case
HPI-3D is a highly integrated device with many functional modules placed in a sturdy case. The device is designed to be easily transportable. Inside the case laser with linear and angular optical components, environmental sensors, power supply and necessary cables can be placed. The whole system weights less than 10 kg.
Wide range of optical components
This is a device allows many different types measurement. Full functionality of the laser interferometer depends on the utilized optical configuration. Usually simple linear configuration is used but there exists a number of possibilities. Additional optical elements are offered either as standard components or as an accessory. No software or hardware update needed.
Configurable encoder output
The interferometer can function as a replacement of magnetic and glass scales, i.e. as a high-precision laser encoder. The encoder output is fully configurable from the HPI Software with simultaneous differential digital and differential analog outputs. Maximum frequency of the digital output can be as high as 25 MHz.
Communication protocol and drivers are available
For certain applications even rich functionality of HPI Software may be not enough. In those cases user can develop its own software to utilise functionality of the HPI-3D system. All necessary drivers and program API are available.
User configurable input/output
Versatility of the HPI-3D reaches new limits with over a dozen pin user configurable digital input/output port. The functionality of those pins can be modified at any time with the use of HPI Software and is stored in non-volatile memory. Thence, laser head pins сan be used e.g. to drive stepping motor or to monitor external sensors state.
Rapid estimation of machine geometry with 3D subsystem
An inherent and very unique part of the HPI-3D is the subsystem for of the laser beam position measurement in space. The instrument is capable of simultaneous measurements of the retroreflector position change in all three directions making rapid estimation of machine geometry possible with the use of simple linear optics. Machine tool geometry parameters like straightness, squareness or parallelism can be easily assessed.
Environmental compensation with wireless sensors
High precision laser interferometry requires air temperature, pressure and humidity sensors. Additionally a few base temperature sensors are also recommended. HPI-3D integrates, in standard configuration, an environment compensation unit together with maintenance free wireless sensors.
External electronic spirit level integration
New feature allowing simultaneous measurement of laser interferometer and high accuracy electronic spirit level in the HPI Software. It is now possible for example to control the level, pitch, yaw or roll during single yet simple measurement!
Performance
No more limits during measurements! HPI-3D optimises the parameters available in modern laser interferometers. Extremely high speed of movement, ultra high resolution and high sample rate make the device suitable even for very demanding applications.
HPI-3D can measure moving objects with velocity up to 7 m/s with standard resolution of 100 pm. Automatic compensation for environmental conditions is performed 100,000 times per second. Frequency vibrations up to 50 kHz can be easily measured. Even better parameters are available upon request!
Versatility
Although there is no universal measurement device, the HPI-3D comes close. The instrument can be used to measure long (tens of meters), extremely short (hundreds of pico-meters) distances and geometry of the machine, to detect very fast and indefinitely slow movements. The system can monitor vibrations, measure angles, compare distances and many more. The laser device can be used in scientific laboratories, machinery industry workshops and outdoors. Not only can it be controlled by computer, tablet or smartphone, but user can modify its functionality in many ways.
Ease of use
The HPI-3D was designed with an emphasis on ease of use and portability. The instrument has built-in wireless connectivity and can work with or without a PC connection. It can be mounted directly on the measured object (e.g. inside a machine) simplifying the measurement path and saving alignment time. The laser is available in a small, rugged carrying case that offers excellent portability. The easy-to-use and powerful PC software makes using the entire device an easy task even for inexperienced users.


Application
Measurements | Servicing |
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Software
- NEW!!! Integration with high precision electronic spirit level
- Easy to use yet with rich functionality
- One software for all applications – unified interface and simplicity of use
- Extensive support for measurement results analysis
- Measurement errors calculated according to world standards like ISO230-2
- Automatic generation of CNC machine compensation files. Compatibility with most popular machine controls
- Integrated tool for CNC path generation
- Direct link to Microsoft (c) Excel and OpenOffice Calc
- Export of data to csv compatible file
- Multiple languages in standard installation pack
- Ease of adding new languages
- Software distributed as freeware
- Free software updates avaialble through our webpage
- Available for Microsoft (c) Windows operating system
- Drivers for Linux, Android (c) and MacOS (c) available
- Communication protocol description available
- LabView (c) libraries available
- Full version of software with demo/simulator mode available
Elements
Complete Laser Interferometer HPI-3D consists of all components necessary to operate the device i.e.:
- Frequency stabilized laser head with integrated measurement, environmental compensation and encoder output paths
- Optical components for single pass linear measurement
- High quality tripod with precision elements for laser head adjustments
- Wirelss environmental sensors
- PC software
- Special, sturdy suitcase for complete laser interferometer system transportation
Options:
- Optics for machine base straightness measurements
- Optics for measurement of small angles
- Elements for checking rotary axes
- Optics for flatness measurement
- Optics for straightness of movement measurement
- Optics for perpendicularity measurement – 3D method
- Optics for perpendicularity measurement – Wollaston method
- “Double-pass” optics for differential measurement
- Optics for measurement from flat mirror or very small retroreflector
Specification
Main specifications:
Parameter | Range |
Laser type | He-Ne laser with frequency stabilisation |
Wavelength accuracy | ± 0.005ppm |
Short term stability | ± 0.001ppm |
Long term stability | ± 0.001ppm |
Output power | 900µW |
Maximum axis length | 80m (linear optics) |
Maximum velocity | ± 7m/s (linear optics) |
Resolution | 100 pm |
Laser source MTBF | 20000 hours |
Compensation of environmental conditions | Real time compensation with wireless sensors 1x air temperature sensor 1x air humidity sensor 1x air pressure 3x material temperature sensor |
Size | 45mm x 70mm x 255mm – laser head 30mm x 60mm x 145mm – power supply |
Weight | 1200g – laser head 500g – power supply |
Measurement specifications:
Measurement | Range | Resolution | Accuracy |
Distance | 0 – 30m | 100pm | 0.4 µm/m |
Velocity | 0 – 7m/s | 0.25 µm/s | 0.1 % |
Angular | 0 – 3600 arcsec | 0.001 arcsec | ± 0.1 ppm |
Straightness – angular optics | 0 – 15 m | 0.01 µm (for 100mm base) | ± 0.2 % |
Straightness – Wollaston prism | 0.3 – 9 m Vertical range ±30 mm | 0.01 µm | ± 0.5 % * L µm |
Straightness – 3D optics | 0 – 6 m | 0.1 µm | ± (10 + 10 * L)µm |
Flatness | 0 – 15 m Vertical range ± 2 mm | 0.01 µrad (for 100mm base) | ± 0.2 % * L |
Squareness | ± 1000 arcsec | 0.01 µm | ± 0.5 arcsec |
Rotary | ± 720° | 0.04 arcsec | ± 0.2 % |
Download Zone
# | File | Description | Date added | File size |
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1 |
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Standard set HPI-3D leaflet |
31/05/2021 15:43 | 9 MB |