AccuRange Line Scanner

The AccuRange Line Scanner is discontinued due to parts obsolescence issues with the AR4000 rangefinder.


Please note that the AccuRange Line Scanner is discontinued due to obsolescence of critical components with the AR4000 rangefinders. Acuity will continue to support deployed line scanners.

The AccuRange Line Scanner is precise spinning mirror assembly that when coupled with Acuity's laser rangefinder, creates a laser scanner. The laser scanner sweeps a laser spot through a 360° rotation for the measuring of profiles and scenes. The AccuRange line scanner is often further integrated to create a 3D laser scanner.

To implement Acuity's 2D laser line scanner, it is necessary to use the AR4000 laser rangefinder, the AccuRange line scanner and a high speed interface card. The HSIF card increases the sampling rate and reads the encoder on back of the spinning mirror. The result is an accurate collection of point cloud data in polar coordinate form. Integrators of the AccuRange line scanner must have the expertise to properly install the (exposed) scanner hardware and interface with the PCI interface card via C, C++ or Visual Basic.


The laser line scanner consists of a balanced, rotating mirror and motor with position encoder, and mounting hardware for use with the AR4000. The scanner deflects the AR4000 sensor's laser beam 90 degrees, sweeping it through a full circle as it rotates. The standard encoder (Agilent brand) resolution is 4096 counts per revolution.

The Acuity laser line scanner has an elliptical mirror situated at a 45° angle to deflect the outgoing laser spot and the return signal. The mirror is engineered the highest optical standards with 96% reflectance.

Using the High Speed Interface Card, the line scanner can sample up to 200 KHz*. With a maximum mirror rotational speed of 2600 rpm, the line scanner can sample 4615 distance measurements per revolution. The line scanner system requires 5-6 Volts DC for the AR4000 rangefinder and a separate 12 Volts DC for the motor power (neither included).

Typically, engineers will use the AR4000-LIR rangefinder in conjunction with the line scanner because the LIR can measure to most surfaces in most conditions. Although the AR4000-LIR is a Class IIIB laser product, the laser class CAN BE reduced when operated with the line scanner. The line scanner sweeps the laser spot at very high speeds and the effective power is reduced. So long as the mirror is always spinning, the radiation danger to the human eye is reduced to the levels of a Class I laser (eye-safe). In these cases, the integrator is responsible for safety interlocks to guarantee that the laser is disabled until the mirror spins. For more information, go to Acuity's laser safety page.



The key elements of an Acuity laser scanner are an AR4000 laser rangefinder, the spinning mirror assembly (line scanner) and a high speed interface card. The options available for the AccuRange line scanner include an environmental enclosure and several choices of high speed interface cards. Additionally, Acuity offers several software libraries to ease your programmer's burden of developing application software for the Acuity hardware.


high speed interface card for the accurange line scannerHigh Speed Interface Cards - The AccuRange High Speed Interface are used to increase the sample rate capability of AccuRange 4000 sensors and the AccuRange Line Scanner, using any PC computer with a PCI, PC104 or ISA bus.

By definition, the interface cards enable high speed sampling by the rangefinder. The High Speed Interface card permits the tracking of encoder positions in the AccuRange Line Scanner. It can sample all the AccuRange outputs at up to 200,000 times per second and buffer the data for reading by the host computer. The results are a list of polar coordinates of a distance measurement with a corresponding encoder (mirror position) reading. The board is available in a PCI, PC-104 or ISA bus interfaces. All models sample to 50 KHz. Acuty also offers a 200 KHz version for the PCI format. 200 KHz models require special hardware configurations of the AR4000's back panel. The high speed range frequency signal is transmitted on a dedicated coaxial cable that goes from the rangefinder to pin 6 of the 9-pin connector. See the PCI 200 KHz High Speed Interface user's manual for more information.

Download PCI High Speed Interface Data Sheet - File Size 163 KB

Download PCI 200 KHz High Speed Interface User's Manual - File Size 463 KB

Download ISA / PC-104 High Speed Interface Data Sheet - File Size 371 KB

Download ISA / PC-104 High Speed Interface User's Manual - File Size 289 KB


Line Scanner Environmental Enclosure is a specially-designedline scanner environmental enclosure to protect from elements enclosure for the AccuRange Line Scanner that protects the equipment from dirt and dust in industrial environments. It is a NEMA-4 housing for the AR4000 with Line Scanner and the AR4000 power supply. It has a field of view of 105 degrees.

The window is anti-reflection coated window mounted at an angle that prevents reflections from returning to the mirror or to the sensor face. For use in ambient temperatures above 80 F, it is available with a cooling fan or can be used with externally supplied cooling air. The enclosure is available in gray painted steel or brushed stainless.

Download the Scanner Enclosure Schematic - File Size 62 KB


Software libraries for the line scanner drastically ease the programmer's burden of writing application code. The product is written by Crandun Technologies. The CTI-HSIF Software Library provides a "plug-and-play" software interface to the Acuity AR4000 laser distance sensor and High-Speed Interface Card, so you can concentrate on your application functionality, rather than on hardware interfacing or data collection details.

These software libraries are licensed on a per-sensor-basis and discounts are available for multi-sensor users. To convince yourself of the value of these software libraries, read our Top Ten reasons to purchase Crandun software libraries.

Download the AR200 Software Library from the Crandun website.

You will need to purchase a keycode to run this library with your sensor.

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Demo Line Scanner program

Demo Line Scanner program - zip 1.34 MB

Line scanner assembly drawing with dimensions - pdf 16.03 KB

Line scanner chassis drawing with dimension - pdf 44.3 KB

Line scanner enclosure schematic - pdf 62.34 KB

PCI HSIF data sheet - pdf 165.79 KB

PCI HSIF 50 KHz user's manual - pdf 319.5 KB

PCI HSIF 200 KHz user's manual - pdf 616.24 KB

ISA / PC-104 data sheet - pdf 371.2 KB

ISA / PC-104 user's manual - pdf 297.24 KB

Crandun software library manual for ISA / PC-104 HSIF card - exe 124.64 KB


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