Types of 3D Scanners and 3D Scanning Technologies

3D scanning technology has evolved significantly over the years, offering multiple solutions for industries ranging from manufacturing and automotive to healthcare and forensics. Different types of 3D scanners and technologies cater to various needs, making it essential to choose the right tool for the project at hand. Whether scanning a small part for prototyping or capturing large objects such as buildings or aircraft, the scanner’s range and capabilities play a critical role in achieving the desired results.

At 3Dimensional Scanning and Manufacturing, we utilize a comprehensive suite of 3D scanning services technologies to ensure that every project receives the most suitable and accurate solution. Our ability to combine different types of scanners and technologies allows us to deliver tailored results, from short-range detailed scans to long-range mapping of large structures.

Short-Range 3D Scanners

Short-range 3D scanners are often employed for projects requiring high detail over a small area. These scanners use two main technologies: laser triangulation and structured light.

Laser-Based 3D Scanners

Laser-based 3D scanners use trigonometric triangulation to capture an object's shape accurately. By projecting laser lines onto an object and capturing the reflection with sensors, the scanner can calculate the distance and create a 3D map. These scanners come in many forms, including handheld, arm-based, or long-range systems.

Benefits of Laser Scanners:

• Ability to scan tough surfaces, such as dark or shiny materials
• Less sensitivity to light conditions
• Portability
• Lower cost and simpler design

Structured Light 3D Scanners

Structured light scanners, sometimes referred to as **“white light” scanners**, project a pattern of light onto an object. Sensors then analyze the distortion of the pattern to calculate the object's shape. Using the same triangulation principles as laser scanners, structured light scanners provide fast and accurate results.

Benefits of Structured Light Scanners:

• Fast scan times (as quick as 2 seconds)
• Large scanning areas (up to 48 inches in a single scan)
• High resolution and accuracy (down to 16 microns)
• Versatile for scanning objects of varying sizes
• Portable and eye-safe for scanning humans and animals

Medium and Long-Range 3D Scanners

Long-range scanners are ideal for large-scale projects such as scanning buildings, aircraft, or industrial equipment. These scanners typically use two types of technologies: pulse-based and phase-shift laser systems.

Laser Pulse-Based 3D Scanners

Also known as time-of-flight scanners, pulse-based 3D scanners measure the time it takes for a laser to hit an object and reflect back to the sensor. By rotating the scanner 360 degrees and directing the laser outward, it captures millions of points, providing detailed 3D data.

Benefits of Pulse-Based Scanners:

• Ability to scan objects up to 1000 meters away
• Good accuracy and resolution for large objects
• Non-contact, allowing safe scanning of a wide variety of objects
• Portable and easy to use

Laser Phase-Shift 3D Scanners

Similar to pulse-based scanners, phase-shift scanners measure the phase difference between the emitted and reflected laser beams. These scanners offer higher accuracy than pulse-based scanners but are limited to shorter distances (up to 300 meters).

Benefits of Long-Range 3D Scanners:

• Capable of scanning large areas up to 1000 meters
• Able to capture millions of points in a single scan
• Good accuracy and resolution based on object size

Coordinate Measuring Machines (CMM)

CMMs are primarily used for precision part inspection. They operate by moving a probe with a known diameter along the surface of an object to take measurements in **XYZ space**. CMMs are incredibly accurate, making them ideal for inspecting small to medium parts in controlled environments. Bridge-type CMMs, with 6 degrees of freedom, are commonly used for high-precision measurements.

Benefits of CMMs:

• One of the most accurate ways to measure an object
• Can measure a wide range of part sizes
• Industry standards and certifications for measurement accuracy
• Available in a variety of styles and sizes

Arm-Based 3D Scanners and Probe Systems

Arm-based systems combine a touch probe with 3D laser scanning technology. The articulated arm can move freely in 3D space, making this system portable and adaptable for a wide range of scanning needs. These scanners are excellent for shop-floor applications and medium-sized parts.

Benefits of Arm-Based Scanners:

• Portability and flexibility
• Ability to scan and probe a single part
• Good accuracy for small to medium-sized objects

Optically Tracked 3D Scanners and Probe Systems

Optically tracked systems use cameras to track the location of the probe or scan head. These systems provide greater freedom of movement and improved accuracy over distance, making them ideal for scanning large objects or environments. One significant advantage of optically tracked systems is dynamic referencing, which allows both the scanner and the part to move without compromising accuracy.

Benefits of Optically Tracked Systems:

• Large scanning volume with freedom of movement
• Ability to scan and probe even while parts are moving
• Portable and easy to set up

3Dimensional Scanning and Manufacturing

3Dimensional Scanning and Manufacturing offers cutting-edge 3D scanning, design, and printing services. Our expertise covers industries such as automotive, aerospace, manufacturing, and precision medicine. Using a wide range of 3D scanning technologies, we can select the best tools for each project, whether you're scanning small components or large industrial structures.

Our services include:

• Reverse engineering: Creating functional CAD models from existing parts
• 3D inspection: Ensuring product quality and accuracy
• 3D printing: Providing high-quality printed parts ready for production

By combining advanced software with state-of-the-art 3D scanners, we deliver high-precision results tailored to your project’s specific requirements. Whether you're in need of detailed prototyping, large-scale scanning, or reverse engineering, 3Dimensional Scanning and Manufacturing provides comprehensive solutions to meet your needs.

In conclusion, 3D scanning technology is diverse, offering multiple solutions for capturing detailed 3D data across various industries. From short-range laser scanners to long-range pulse-based systems, selecting the right technology is critical to achieving accurate and efficient results. At 3Dimensional Scanning and Manufacturing, we leverage these technologies to offer high-quality scanning and manufacturing services that meet the demands of any project, big or small.