Swirled 1000-1750nm LED
In modern industrial automation, traditional visible light inspection often hits a wall when dealing with visually identical materials, hidden moisture, or subsurface defects. This is where Short-Wave Infrared (SWIR) imaging steps in. Integrating SWIR technology into a Smart Color Test Box has become a game-changer for vision engineers, serving as the ultimate spectral evaluation tool for both laboratory R&D and on-site industrial testing.
By pairing a SWIR Smart Color Box with a compatible SWIR camera, engineers can instantly unlock the hidden optical properties of materials across various infrared spectrums.
Key SWIR Applications in Smart Color Test Box Evaluation
A professional SWIR Smart Color Test Box typically integrates multiple high-intensity LED wavelengths, ranging from 940nm to 1550nm. Selecting the right wavelength determines the success of your machine vision application. Here is how different SWIR bands solve complex inspection challenges:
1. Moisture Detection and Liquid Level Inspection (1450nm / 1550nm)
Water has a massive absorption peak in the short-wave infrared spectrum, particularly around 1450nm.
- The Application: Under 1450nm or 1550nm illumination, water appears almost pitch black, while dry substances appear bright.
- Why Test It: A SWIR color box allows vision labs to simulate and verify the exact contrast needed for fill-level monitoring in opaque bottles, detecting bruises in fruits, or monitoring moisture distribution in textiles.
2. Semiconductor and Silicon Wafer Defect Sorting (1050nm / 1200nm)
Silicon becomes transparent when exposed to wavelengths longer than 1050nm.
- The Application: This unique physical property allows SWIR cameras to look straight through silicon ingots and wafers.
- Why Test It: Using the 1050nm and 1200nm LED toggles on the test box, engineers can quickly perform field testing to locate internal cracks, alignment marks, or microscopic voids inside microelectronic components without damaging the substrate.
3. Material Identification and Plastic Recycling (1300nm / 1550nm)
Many polymers, plastics, and chemical compounds that look identical under visible light exhibit completely distinct chemical fingerprints in the SWIR spectrum.
- The Application: Different types of plastics (such as PET, HDPE, PP, and PVC) reflect and absorb SWIR light at different rates.
- Why Test It: By utilizing the 1300nm and 1550nm high-intensity LEDs, sorting facilities can calibrate their machine vision sorting systems to automatically segregate recycling waste based on material composition rather than color.
4. Agriculture, Sorting, and Food Safety (1200nm / 1450nm)
Food safety inspection requires non-destructive, high-speed analysis.
- The Application: SWIR light penetrates deep into organic matter, revealing foreign objects like plastics, hair, or insects hidden among grains or processed food.
- Why Test It: Testing with the 1200nm and 1450nm bands helps vision labs determine the optimal setup to filter out contaminants on high-speed conveyor belts.
Why the SWIR Smart Color Box is Essential for Your Vision Lab
- Streamlined Field Testing: Instead of carrying multiple bulky infrared lamps to a client’s factory, a single portable SWIR color box lets you test six critical wavelengths (940nm, 1050nm, 1200nm, 1300nm, 1450nm, 1550nm) with the push of a button.
- Rapid Feasibility Studies: Accelerate your machine vision feasibility studies by instantly switching spectra to see which wavelength delivers the highest image contrast on your SWIR camera.
- Industrial-Grade Uniformity: Equipped with high-intensity LEDs, it ensures reliable, repeatable, and uniform illumination across the entire field of view, minimizing testing errors.
What is the best wavelength for SWIR moisture detection?
Answer: 1450nm due to the peak absorption band of water.
