LUCID Vision Labs - Enhance Your Industrial Application with LUCID’s Factory Tough™ SWIR Camera.pptx
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In recent years, there has been a growing demand for short-wave infrared (SWIR) imaging with more products becoming available that enhance the capabilities of machine vision systems beyond the visible wavelength. Industrial applications such as fruit inspection and sorting, packaging, IR microscopy, semiconductor inspection, material sorting can greatly benefit from SWIR imaging. In this presentation, we will cover the advancements of Sony’s SenSWIR technology paired with our brand new Atlas SWIR Factory Tough™camera, capable of capturing images across both visible and invisible light spectrums, and boasting a miniaturized pixel size of 5μm. The IP67-rated Atlas SWIR camera is equipped with integrated single-stage thermoelectric sensor cooling (TEC1) for superior image quality and extended operating temperature range, making it ideal for challenging industrial environments.
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LUCID Vision Labs - Enhance Your Industrial Application with LUCID’s Factory Tough™ SWIR Camera.pptx
- 1. www.thinklucid.com LUCID VISION LABS INC. April 2022 ENHANCE YOUR INDUSTRIAL APPLICATION WITH LUCID’S FACTORY TOUGH™ SWIR CAMERA
- 2. LUCID VISION LABS, INC. LUCID VISION LABS 2 Designed & manufactured in Canada Over 85 unique camera models 5 main camera families Ethernet based cameras
- 3. LUCID VISION LABS, INC. SHORT WAVE INFRARED (SWIR) SWIR range extends from 1000 nm to 2500 nm. Theoretical sensitivity limit (Cut Off) of Si-based image sensor 1,070 nm wavelength. Compound semiconductors such as indium gallium arsenide (InGaAs) or mercury cadmium telluride (MCT) are used for sensor material to enable sensitivity in SWIR region. 3 0 10 20 30 40 50 60 70 80 90 300 500 700 900 1100 1300 1500 1700 QE (%) Wavelength (nm) InGaAs CMOS
- 4. LUCID VISION LABS, INC. VIS / SWIR / LWIR COMPARISON 5 Wavelengths in the 900 to 1700 nm SWIR range behave similarly to visible light. SWIR images content is mostly based on reflectance as opposed to radiation (thermal) for LWIR images. Conventional glass optics can be used. High resolution and high speed sensors can be realized by adapting similar drive modes and pixel structure as standard CMOS image sensors. Images Source Sony Semiconductor Solutions Corporation Visible SWIR LWIR
- 5. LUCID VISION LABS, INC. SWIR IMAGING PRINCIPLES Interaction of light with matter depends on wavelength. Absorption, reflection, or transmission of incoming light. Different spectral signature in SWIR range compared to visible light spectrum. Narrow-band SWIR imaging can be used to differentiate between similarly looking material under visible lights. High contrast images well suited for standard image processing techniques. 7 Ex: Liquid water absorption spectrum Camera Ex: Absorption spectrum of liquid water
- 6. LUCID VISION LABS, INC. ADVANCED SWIR PIXEL TECHNOLOGY 9 Conventional InGaAs Sensor with Bump Bonding Sony SenSWIR InGaAs Sensor with Cu-Cu Bonding InP Layer InP Layer InGaAs Layer Bump Bonding Cu-Cu Bonding The SenSWIR copper-to-copper (Cu-Cu) connection produces a smaller pixel pitch and a smaller pixel size of only 5.0μm. This allows higher resolution sensors in smaller sensor sizes. Pixel Pitch 5μm Pixel Pitch 10μm The top indium-phosphorus (InP) layer of the Sony SenSWIR sensor is thinner, allowing more light to reach the InGaAs layer.
- 7. LUCID VISION LABS, INC. VIS-SWIR SPECTRAL RESPONSE 10 0 10 20 30 40 50 60 70 80 90 300 500 700 900 1100 1300 1500 1700 QE (%) Wavelength (nm) SenSWIR InGaAs CMOS Single camera for VIS to SWIR imaging with high QE. Reduced system complexity vs. dual camera setup (CMOS + InGaAs). Lots of potential interactions in the NIR to SWIR range to be explored with SenSWIR capabilities.
- 8. LUCID VISION LABS, INC. USE CASE EXAMPLES 11 Moisture content estimation Visible wavelength 1300nm wavelength
- 9. LUCID VISION LABS, INC. WAVELENGTHS COMPARISON 12 940nm Visible 1050nm 1200nm 1450nm 1300nm 1550nm
- 10. LUCID VISION LABS, INC. USE CASE EXAMPLES 13 Foreign Material Detection Visible wavelength 1450nm wavelength
- 11. LUCID VISION LABS, INC. WAVELENGTHS COMPARISON 14 940nm Visible 1050nm 1200nm 1450nm 1300nm 1550nm
- 12. LUCID VISION LABS, INC. USE CASE EXAMPLES 15 Semiconductor inspection Visible wavelength 1200nm wavelength
- 13. LUCID VISION LABS, INC. WAVELENGTHS COMPARISON 16 Visible 1450nm 1300nm 1550nm 1000nm 1200nm
- 14. LUCID VISION LABS, INC. USE CASE EXAMPLES 17 Packaging inspection Visible wavelength 1550nm wavelength
- 15. LUCID VISION LABS, INC. WAVELENGTHS COMPARISON 18 1450nm 1300nm 1550nm Visible 1000nm
- 16. LUCID VISION LABS, INC. USE CASE EXAMPLES 19 Material inspection Visible wavelength 1550nm wavelength Flour Baking soda Sugar Flour Baking soda Sugar
- 17. LUCID VISION LABS, INC. WAVELENGTHS COMPARISON 20 1450nm 1300nm 1550nm Visible 1000nm
- 18. LUCID VISION LABS, INC. MULTISPECTRAL IMAGING 21 Combine multiple images acquired with narrowband lightings for multispectral analysis. λ Greyscale images acquired with Red, Green, and Blue illumination combined into a single RGB image 1300nm SWIR image extracted to show defect Sequence of greyscale images acquired at different wavelength in the VIS-SWIR range
- 19. LUCID VISION LABS, INC. ATLAS SWIR 22 Dust proof and water resistant design GigE Vision and PoE+ compliant Extended temperature range IP67 GigE Vision Camera 400 nm to 1800 nm sensitivity range with high quantum efficiency Thermoelectric cooling element (TEC1) Extended Sensitivity Sony SenSWIR Sensors IMX990: 1280 x 1024 px (1.3MP), 8.2 mm diagonal (1/2-inch type), 95 fps IMX991: 640 x 512 px (0.3MP), 4.1 mm diagonal (1/4-inch type), 256 fps Pixel size: 5μm x 5μm
- 20. LUCID VISION LABS, INC. THERMOELECTRIC COOLING (TEC) 23 SenSWIR Sensor Thermoelectric Cooling (TEC) Internal Heatsink Aluminum Camera Case
- 21. LUCID VISION LABS, INC. ATLAS SWIR 24 Factory Tough™ VIS-SWIR Camera Up to 20G shocks, 4.9G random vibration, 10G sinusoidal vibration 010101 001001 010110 Single cable for data and power. Low power consumption: avg <15w Reduce need for extra power outlets. Atlas SWIR is built for 24/7 operation in challenging industrial environments. Only 435g 60 x 60 x 65 mm Built-in thermoelectric cooling (TEC1)
- 22. LUCID VISION LABS, INC. ACTIVE SENSOR ALIGNMENT 25
- 23. LUCID VISION LABS, INC. SYSTEM CONFIGURATIONS Filters Bandpass, multipass filters Illumination Narrow band LED lighting Wideband quartz-halogen light 26 0 10 20 30 40 50 60 70 80 90 100 400 500 600 700 800 9001000110012001300140015001600170018001900200021002200 Transmission (%) Wavelength (nm) Lenses SWIR or VIS-SWIR
- 24. LUCID VISION LABS, INC. LUCID’S SWIR ACCESSORIES VIS-SWIR Lenses IP67 Lens Tube 27 Part Number Description TSMA120 TAMRON SMA11 C-MOUNT 1" 12MM F/1.6 SWIR TSMA160 TAMRON SMA11 C-MOUNT 1" 16MM F/1.6 SWIR TSMA250 TAMRON SMA11 C-MOUNT 1" 25MM F/1.6 SWIR Part Number Description IPTC-D590L815 IP67 C-Mount Lens Tube, Inner ⌀: 59mm, Inner Length: 81.5mm TSMA120 f=12mm
- 25. LUCID VISION LABS, INC. ARENA SDK 28 Comprehensive Toolkit • Multi-platform support – Windows 7, Windows 10, Linux Ubuntu LTS & ARM • Multi-language support – C, C++, .NET C#, Python • Pixel Formats: XYZ Point Cloud Data, Intensity Mono, Confidence Map Learn by Example • Rich examples – camera configuration, streaming, trigger, events • Graphic User Interface (GUI) examples – QT, MFC Performance Focused • Driver optimization, low CPU usage. ArenaView GUI • Easily visualize and view 2D, 3D and polarized image data in real- time.
- 26. THANK YOU Be Inspired. Think Lucid. 29
Editor's Notes
- The infrared spectrum is comprised of near infrared (NIR), shortwave infrared (SWIR), and medium and long wave infrared (MWIR, LWIR). SWIR range extends from 1000 nm to 2500 nm. Theoretical sensitivity limit (Cut Off) of Si-based image sensor 1,070 nm wavelength. Compound semiconductors such as indium gallium arsenide (InGaAs) or mercury cadmium telluride (MCT) are used for sensor material to enable sensitivity in SWIR region. Here aw are showing the typical quantum efficiency curve of standard CMOS and InGaAs sensors. [NOTE] The gap between SWIR / MWIR / LWIR wavelength are due to the atmospheric absorption spectrum The atmosphere is opaque in those wavebands.
- The infrared spectrum is comprised of near infrared (NIR), shortwave infrared (SWIR), and medium and long wave infrared (MWIR, LWIR). SWIR range extends from 1000 nm to 2500 nm. Theoretical sensitivity limit (Cut Off) of Si-based image sensor 1,070 nm wavelength. Compound semiconductors such as indium gallium arsenide (InGaAs) or mercury cadmium telluride (MCT) are used for sensor material to enable sensitivity in SWIR region. Here aw are showing the typical quantum efficiency curve of standard CMOS and InGaAs sensors.
- Wavelengths in the 900 to 1700 nm SWIR range behave similarly to visible light. SWIR images content is mostly based on reflectance as opposed to radiation for LWIR images (Thermal). Conventional glass optics can be used. High resolution and high speed sensors can be realized by adapting similar drive modes and pixel structure as standard CMOS image sensors (Ex. Binning)
- Wavelengths in the 900 to 1700 nm SWIR range behave similarly to visible light. SWIR images content is mostly based on reflectance as opposed to radiation for LWIR images (Thermal). Conventional glass optics can be used. High resolution and high speed sensors can be realized by adapting similar drive modes and pixel structure as standard CMOS image sensors (Ex. Binning)
- Interaction of light with matter varies with wavelength. Depending on the object, incoming light at a given wavelength can either be absorbed, reflected, or transmitted. Knowing the properties of the target under different spectra let the application designer select the right wavebands for his own application. Selecting the appropriate narrow-band illumination and/or filtering results in high contrast images well suited for standard image processing techniques. [Click] One example of such property is shown here with the absorption spectrum of liquid water. Clear peaks and valley are noticeable in the SWIR range, and can be used to design the vision system accordingly.
- Interaction of light with matter varies with wavelength. Depending on the object, incoming light at a given wavelength can either be absorbed, reflected, or transmitted. [Click} Knowing the properties of the target under different spectra let the application designer select the right wavebands for his own application. Selecting the appropriate narrow-band illumination and/or filtering results in high contrast images well suited for standard image processing techniques. [Click] One example of such property is shown here with the absorption spectrum of liquid water. Clear peaks and valley are noticeable in the SWIR range, and can be used to design the vision system accordingly.
- Unique technology developed by Sony allows to overcome challenges in pixel miniaturization. Compact, high-resolution sensors, capable of imaging from the visible spectrum to SWIR wavelengths. Cu-Cu bonding and InP layer thinning allows more light to reach the underlying InGaAs layer, resulting in higher quantum efficiency even in visible wavelengths and improved uniformity.
- Sony SenSWIR extend sensitivity from Visible to SWIR.
- SWIR is sensitive to water and can be used to detect moisture in fruits and vegetables. Differences in moisture levels can show up as bruising in produce. In the example above, normal wavelengths (left) are unable to detect any bruising but SWIR can detect bruising in the apples (right).
- Different objects of the similar color and shape can be hard to differentiate from each other. SWIR wavelengths are absorbed and reflected differently depending on the object’s material (right). This can be used to detect foreign objects that might overwise go undetected using visible light (left).
- SWIR can be used to inspect silicon wafers as silicon becomes translucent at wavelengths over 1150nm (right). While visible light can be used to help detect issues on the front-side of the wafer (left), SWIR allows foreign objects or imperfections to show up more easily on both the front-side and back-side of the wafer.
- Some opaque plastic packaging becomes transparent under SWIR wavelength. This can be used to inspect for fill level or check seal integrity for heated seal package (food industry).
- Different materials or compounds looking similar under visible light may absorb SWIR wavelengths differently. In this example flour, baking soda, and sugar are aligned left to right. By selecting a specific narrow band of the SWIR the spectrum it’s easy to discriminate between the various materials. This property of SWIR imaging is well suited for application in the pharmaceutical industry where identifying different compounds with certainty is primordial. Standard SWIR cameras are preferred to hyperspectral inspection systems like spectrometer due to their lower cost and ease of deployment in an in-line application.
- To realize multispectral analysis, multiple images can be acquired with narrowband lighting and combined afterward for further analysis. [Click] First, a series of images is acquired leveraging the camera’s on-board sequencer. Each image is triggering a different narrowband LED light and effectively acquires a small part of the full camera sensitivity spectrum. [Click] Images can then be combined or processed separately to effectively inspect over the whole spectral range. Here we are showing an example of combining greyscale images acquired with Red, Green, and Blue LED lighting into a single full color image as well as the extraction of a specific wavelength in the SWIR range (1300nm). This type of setup is particularly useful when adding a second standard camera beside a SWIR camera is difficult due to either the complexity of the optical system (e.g. telecentric lenses) or due to size constraints. This type of inspection requires a controlled lighting environment (black box) to avoid light pollution from other adjacent light sources.
- The SenSWIR sensors are available with built-in Thermoelectric Cooling (Peletier) providing active cooling of the image sensor without any moving part. The Atlas SWIR matches the TEC unit with its internal heatsink and connects it to its aluminum chassis for improved heat dissipation. This active cooling capabilities allows low noise imagery over an extended operating temperature range.
- Challenges of Sensor Placement (left animations) -Rotation can be off -Sensor tilt, raised edges -Off centre from lens barrel centre (Right) Sensor is actively adjusted during its placement in the camera in real-time. Our Active Sensor Alignment system employs an automated 6 degrees of freedom (6DoF) mechanical unit. This means each sensor or each unit properly placed.
- Finally, a look at the ecosystem around the camera and the accessories required for SWIR imaging. Most SWIR applications require a specific narrow wavelength band to capture the desired light interaction with the target objects. This can be achieved with a combination of lighting and filters. Lighting can be either wideband, such as quartz halogen light or narrow band, typically LED-based. Filters are available in a variety of configuration, with either bandpass, longpass, or even multipass fitlers that can let several narrow band pass at once. Lenses should be selected to provide high contrast and reduced abberations over the total application-specific spectral range.
- This VIS-SWIR lenses provide constant focus across all wavelengths from Visible to SWIR range. The same lens tube is compatible with all 3 VIS-SWIR lenses.
- Atlas SWIR is compatible with the Arena SDK environment as any other LUCID cameras.