OCT uses infrared light to provide surface profiles and information about subsurface structure and uniformity, delivering higher resolution and faster images than ultrasound inspection for non-destructive testing. This novel technology for NDT requires no contact or coupling medium, yet delivers accurate information in real time for in-situ process feedback and high-throughput quality control on finished parts.
OCT is an excellent tool for evaluation of shapes and dimensions of tools, molds, and final parts, as shown here for polymer-based 3D printing. It can also provide real-time process feedback for control of ablation depth during laser machining, and for defect detection and dimensional analysis in additive manufacturing.
OCT can be used to evaluate application of critical coatings and paints in industries like aviation and automotive. High resolution layer imaging enables analysis of thickness uniformity and defects that can impact quality and safety, as shown in this detailed image of a multilayer paint coating.
The excellent axial resolution of OCT is ideal for NDT imaging of the multilayered structures used in display panels. The 3D information acquired can be used to evaluate flatness uniformity and identify subsurface defects affecting display quality. Sublayers < 10 µm in thickness can be clearly imaged, as shown here.
The medical industry has been quick to adopt OCT for the analysis of high precision medical devices due to its ability to generate non-contact images of very small, thin, and delicate structures such as this contact lens. OCT can also provides information about pores, defects, and gaps in the production of critical membranes and seals.
Take QA and process monitoring to the next level with non-contact OCT imaging at micro-level resolution for accurate, quantitative analysis of features and defects. Capture 3D images in under a minute or rapid cross sections for real-time process control feedback. Starting with our own, high wavelength resolution spectrometer design, we create OCT systems with industry-leading depth penetration and resolution. We also develop custom solutions for specific OEM and manufacturing applications, from spectrometers to full systems. Our OCT systems can be controlled with intuitive system software, or through SDKs to allow customization.
|WP OCT 800 nm|
(DEPTH + RESOLUTION)
|WP OCT 800 nm|
|WP OCT 1300 nm|
|Imaging Depth||3.0 mm||1.8 mm||5.0 mm|
|Axial Resolution||6.0 μm||3.0 μm||7.0 μm|
|Wavelength Range||780-900 nm||750-930 nm||1235-1385 nm|
|FWHM Bandwidth||>120 nm||>150 nm||>90 nm|
|Axial Scan Rate||Up to 250 kHz available|
|Image Capture Rate||>20 Hz, >50 Hz, >200 Hz options available|
|Image Size||1024 x 1024 x 1024 points, .tif output|
|Transverse Resolution||6.0 μm||6.0 μm||10.0 μm|
|Transverse Imaging Area||>5 x 5 mm||>5 x 5 mm||>5 x 5 mm|
|Working Distance||25 mm||25 mm||25 mm|
|Color Camera Image||10 Mega Pixel RGB (640 x 480 real time mode)|
|System/Computer Interface||Camera Link and SMB connections|
|System/Scanner Interface||FC/APC fiber, 10-pin electrical connector, USB Cable|
|Computer Provided||64-bit Windows 7 or higher. 16 GB RAM, Intel Processor, AMD graphics graphics card|
|Display Provided||22 inch HD 1080p monitor|
|Software Included||WP OCT image acquisition interface; SDKs available upon request|
While ultrasonic inspection has become the standard in subsurface imaging, it is limited in its speed, resolution, and ability to probe small or irregular samples. Confocal imaging provides submicron resolution, but is very expensive, and limited to depths of less than 1 mm.
OCT is a novel yet well-established technology that provides intermediate imaging depth at both high resolution and speed. It retains ultrasound’s flexibility in taking the probe to the sample, while eliminating the need for coupling media. It easily measures small or thin parts, delicate samples, and rough surfaces, making it ideal for non-destructive testing.
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