Technical FAQ

We recommend using a shorter wavelength (such as Blue Light, 450nm-470nm) combined with a Low-Angle Dark Field light. Short-wavelength blue light scatters easily off fine defects and scratches. Under low-angle illumination, these defects reflect light into the lens, appearing bright, while the flat reflective metal reflects light away, appearing dark. This creates the contrast needed for edge-detection algorithms.

Choose a Coaxial Light for flat, highly reflective surfaces (like silicon wafers, polished metal sheets, or glass panels) because it provides perpendicular, uniform illumination along the optical axis. For curved, embossed, or uneven reflective surfaces (like aluminum cans, metallic packaging, or rounded solder joints), choose a Dome Light. A dome light provides multi-angled diffuse illumination, eliminating hot spots and glare.

A bandpass filter mounted on the camera lens blocks ambient overhead factory lighting (such as fluorescent or sunlight) and only allows the specific wavelength of your LuxMV LED light source (e.g., 660nm Red) to pass through. This isolates the imaging system from external lighting changes, ensuring repeatable image contrast and preventing inspection failures due to shadows or shift changes.

Strobing (synchronizing high-current LED pulses with the camera shutter) offers two key advantages. First, it allows the LED to emit light up to 10x brighter than its continuous limit, freezing motion in high-speed inspection lines and preventing blur. Second, because the LED is off between frames, it reduces heat buildup, extending the LED's lifespan and preventing intensity degradation.

Standard diffuse backlights emit light in all directions, which causes light rays to bend around the edges of a 3D object, creating a slightly blurred silhouette. A Collimated Backlight uses specialized optics to emit parallel light rays. This creates extremely sharp silhouettes, eliminating edge-blur and enabling high-precision dimensional measurements of cylindrical or complex parts.

Yes! We offer a Free Staging Loan Program. You can borrow demo lights and lenses for up to 14 days to test on your actual parts. Alternatively, you can send your target samples to our application laboratory, where our optical engineers will perform test exposures and provide a detailed selection report with recommended angles, wavelengths, and model codes.

We manufacture specialized bar lights, ring lights, and backlights with IP67 and IP69K ratings. These products feature stainless steel or anodized aluminum housings, sealed viton gaskets, and PMMA or tempered glass windows. They are designed to withstand aggressive chemicals, high-temperature washdowns, and humid environments common in food, pharmaceutical, and automotive industries.

A Ring Light is suitable for general PCB component placement and checking markings, as it provides direct, directional illumination from a medium angle. However, if you are inspecting solder fillets, reflective solder joints, or highly reflective pins, a ring light can cause bright glare spots. A Dome Light should be used instead to provide uniform diffuse lighting, allowing the camera to inspect the shape and quality of the solder joint without glare.