Scanner Laser 3d
Marilu Mandez
Improve speed, accuracy and productivity.
Manhattan Laser Barcode Scanners deliver high-quality scanning for a wide range of data collection functions to help improve routine transactions, automate paper-based processes and increase productivity. The laser scan engine offers speed, accuracy and greater tolerances for reliable service reading popular barcodes at wider distances including UPC, EAN and GS1 DataBar. Easy to implement and simple to use, a built-in keyboard wedge decoder sends scanned data to an active application where it appears as if it was manually typed or directly keyed into the computer. With a scan rate of 50 scans per second and an accurate read range of up to 300 mm (12 in.), this model offers a practical daily scanning solution for point-of-sale, shipping, warehousing, office and industrial applications to minimize manual data entry, speed transactions and reduce errors.
Traditionally, capturing large environments relied on tools that produced single point measurements, such as tape measures, piano wire, plumb bobs, laser range finders and total stations. While they are familiar tools, they are often time-consuming, often taking days, weeks or months depending on the space. Additionally, traditional tools often produce inconsistencies in measurements from user to user and ultimately data often get missed, leading to potentially cascading inaccuracies.
So, how do they accomplish all of that so quickly? The Laser Scanner emits a beam of infrared laser light onto a rotating mirror that effectively paints the surrounding environment with light. The scanner head rotates, sweeping the laser across the object or area. Objects in the path of the laser reflect the beam back to the scanner, providing the geometry that is interpreted into 3D data. In addition to the distance measurement, Laser Scanners also capture measurements on the horizontal and vertical planes, providing a full scope of measurement data.
Law enforcement & fire safety: Laser Scanners are effective tools for crime scene documentation, crash and accident scene reconstruction, fire scene analysis, forensic investigations and more. Laser scanning saves hours of documentation time and preserves a digital replica of scenes that may be environmentally vulnerable.
Insurance: Laser Scanners are used to document the actual state of a piece of property at a point in time, helpful for setting a baseline for value and obligation, as well as documenting losses with vehicles, damaged properties or products.
Oil & gas: Laser scanning is well-equipped to assist in engineering, maintenance and planning on oil platforms and in refineries. They are also highly useful in documenting complex piping structures to avoid installation issues or errors.
Construction: Laser scanning can provide continuous in-field verification at every stage of a construction project lifecycle, helping predict and prevent errors and enabling significant cost, scrap and time savings.
Facilities management & asset documentation: Laser scanning offers precise data of complex factory and plant installations, useful in maintaining and documenting assets and facilities.
In each application scenario, a Laser Scanner produces accurate results in less time and with fewer errors than other, more traditional methods. And in some cases, such as documenting crime and crash scenes, the time saved offers downstream benefits such as being able to open roadways to the public earlier. In applications that require outdoor work, Laser Scanners can document complex areas where inclement weather is a concern.
Thanks to custom-designed, top quality Nikon optics, the LC15Dx captures the smallest details with precision while maintaining speed and data quality. It does this by optimizing the laser settings in real time to match the type and reflectivity of the material being inspected.
Optimized to meet the needs of design, manufacturing and metrology professionals, the HandySCAN 3DBLACK Series is the premier 3D scanner for accurately and reliably measuring parts of any size, material, or complexity. It delivers results within seconds, anywhere.
This handheld 3D scanner is a stand-alone device that does not require a tripod nor any external tracking device to operate. Fitting in a small suitcase, it can be brought anywhere and used in any environmental conditions without affecting its performance.
The HandySCAN 3D comes with VXelements, which powers our entire suite of 3D scanning and measurement technologies. It combines all the essential tools you need from data acquisition to CAD Software, in a user-friendly, simplified and sleek working environment.
Laser scanning is the controlled deflection of laser beams, visible or invisible.[1] Scanned laser beams are used in some 3-D printers, in rapid prototyping, in machines for material processing, in laser engraving machines, in ophthalmological laser systems for the treatment of presbyopia, in confocal microscopy, in laser printers, in laser shows, in Laser TV, and in barcode scanners.Applications specific to mapping and 3D object reconstruction are known as 3D laser scanner.
Most laser scanners use moveable mirrors to steer the laser beam. The steering of the beam can be one-dimensional, as inside a laser printer, or two-dimensional, as in a laser show system. Additionally, the mirrors can lead to a periodic motion - like the rotating polygon mirror in a barcode scanner or so-called resonant galvanometer scanners - or to a freely addressable motion, as in servo-controlled galvanometer scanners. One also uses the terms raster scanning and vector scanning to distinguish the two situations. To control the scanning motion, scanners need a rotary encoder and control electronics that provide, for a desired angle or phase, the suitable electric current to the motor (for a polygon mirror) or galvanometer (also called galvos). A software system usually controls the scanning motion and, if 3D scanning is implemented, also the collection of the measured data.
In order to position a laser beam in two dimensions, it is possible either to rotate one mirror along two axes - used mainly for slow scanning systems - or to reflect the laser beam onto two closely spaced mirrors that are mounted on orthogonal axes. Each of the two flat or polygon (polygonal) mirrors is then driven by a galvanometer or by an electric motor respectively. Two-dimensional systems are essential for most applications in material processing, confocal microscopy, and medical science. Some applications require positioning the focus of a laser beam in three dimensions. This is achieved by a servo-controlled lens system, usually called a 'focus shifter' or 'z-shifter'. Many laser scanners further allow changing the laser intensity.
The most common way to move mirrors is, as mentioned, the use of an electric motor or of a galvanometer. However, piezoelectric actuators or magnetostrictive actuators are alternative options. They offer higher achievable angular speeds, but often at the expense of smaller achievable maximum angles. There are also microscanners, which are MEMS devices containing a small (millimeter) mirror that has controllable tilt in one or two dimensions; these are used in pico projectors.
Some special laser scanners use, instead of moving mirrors, acousto-optic deflectors or electro-optic deflectors. These mechanisms allow the highest scanning frequencies possible so far. They are used, for example, in laser TV systems. On the other hand, these systems are also much more expensive than mirror scanning systems.
Research is going on to achieve scanning of laser beams through phased arrays. This method is used to scan radar beams without moving parts. With the use of vertical-cavity surface-emitting laser (VCSELs), it might be possible to realize fast laser scanners in the foreseeable future.
Within the field of 3D object scanning, laser scanning (also known as lidar) combines controlled steering of laser beams with a laser rangefinder. By taking a distance measurement at every direction the scanner rapidly captures the surface shape of objects, buildings and landscapes. Construction of a full 3D model involves combining multiple surface models obtained from different viewing angles, or the admixing of other known constraints. Small objects can be placed on a revolving pedestal, in a technique akin to photogrammetry.[2]
3D object scanning allows enhancing the design process, speeds up and reduces data collection errors, saves time and money, and thus makes it an attractive alternative to traditional data collection techniques. 3D scanning is also used for mobile mapping, surveying, scanning of buildings and building interiors,[3] and in archaeology.
Depending on the power of the laser, its influence on a working piece differs: lower power values are used for laser engraving and laser ablation, where material is partially removed by the laser. With higher powers the material becomes fluid and laser welding can be realized, or if the power is high enough to remove the material completely, then laser cutting can be performed. Modern lasers can cut steel blocks with a thickness of 10 cm and more or ablate a layer of the cornea that is only a few micrometers thick.
The ability of lasers to harden liquid polymers, together with laser scanners, is used in rapid prototyping, the ability to melt polymers and metals is, with laser scanners, to produce parts by laser sintering or laser melting.
The principle that is used for all these applications is the same: software that runs on a PC or an embedded system and that controls the complete process is connected with a scanner card. That card converts the received vector data to movement information which is sent to the scanhead. This scanhead consists of two mirrors that are able to deflect the laser beam in one level (X- and Y-coordinate). The third dimension is - if necessary - realized by a specific optic that is able to move the laser's focal point in the depth-direction (Z-axis).
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