Background Suppression Color-Independent Detection
Solve the toughest sensing challenges with XSZ BGS sensors. Using advanced triangulation technology, our sensors reliably detect dark objects against light backgrounds with millimeter precision, regardless of surface color or reflectivity.
- 2000mm Sensing Range
- <2% B/W Shift
- PSD/CMOS Receiver Tech
Why BGS Ignores Color & Contrast
Standard diffuse sensors rely on the intensity of reflected light, which often fails when a dark object is in front of a bright background. XSZ BGS sensors utilize optical triangulation, measuring the angle of the returning beam to determine the exact position of the object.
PSD/CMOS Array Technology
The receiver tracks the precise point where the light hits the sensing element. A change in object distance shifts the spot position on the array, allowing for a defined cut-off point.
Precision Cut-off Distance
Objects beyond the set distance are ignored, regardless of how reflective they are. This makes BGS ideal for detecting black parts even when they are placed on shiny metallic surfaces.
Professional Product Series
High-performance optical solutions engineered for global industrial automation.
Ultra-small DC 4-wire BGS
EZ Series BGS Photoelectric Sensor
High-Precision CCD Background Suppression Photoelectric Sensor
SZ Series M18 Industrial Cylindrical Photoelectric Sensor
E3Z Series Square Photoelectric Sensor
E3FA Series M18 Cylindrical Photoelectric Sensor
E3F1 Series Cylindrical Photoelectric Sensor
M12 Industrial Cylindrical Laser Photoelectric Sensor
Precision Detection Regardless of Surface
XSZ BGS sensors redefine proximity sensing by combining distance-based triangulation with high-speed digital processing, ensuring absolute reliability in complex industrial environments.
Black-on-White Accuracy
Industry-leading <2% B/W shift ensures a jet-black object is detected at virtually the same distance as a pure white background.
Minimal Dead Zone
Our optical path design reduces the sensing blind spot, allowing for accurate object detection even when mounted in extremely tight mechanical spaces.
Interference Rejection
Internal smart algorithms prevent mutual interference, enabling multiple BGS sensors to be installed side-by-side without signal cross-talk.
High Ambient Immunity
Optimized optical filters and digital sampling allow the sensor to operate flawlessly under intense LED overhead lights or direct sunlight.
Compare BGS Series Specs
From micro-electronics positioning to heavy-duty logistics, find the precise background suppression parameters for your application.
| Specifications | XSZ-B10 (Miniature) | XSZ-B50 (Standard) | XSZ-B200 (Long Range) |
|---|---|---|---|
| Sensing Range (White 90%) | 10 - 150 mm | 50 - 500 mm | 200 - 2000 mm |
| Black/White Shift (B/W Shift) | < 3% at 100mm | < 2% at 400mm | < 5% at 1500mm |
| Hysteresis | < 5% of sensing range | < 10% of sensing range | < 15% of sensing range |
| Light Source | Visible Red Laser (Class 1) | Point-source LED (Red) | Infrared / Red LED |
| Response Time | 0.5 ms | 1 ms | 2 ms |
| Spot Diameter | ø 1mm at 100mm | ø 12mm at 400mm | ø 50mm at 1500mm |
| Output Logic | NPN/PNP (Switchable) | NPN/PNP (Switchable) | NPN/PNP or Relay |
| IP Rating | IP67 | IP67 / IP69K (Optional) | IP65 / IP67 |
Proven Reliability in Field
XSZ BGS sensors are engineered to perform where standard sensors fail—delivering consistent detection across diverse materials and challenging backgrounds.
Multi-colored Items
Perfect for detecting irregular packaging boxes with multiple colors and patterns. BGS ensures a stable trigger point regardless of the color passing through the beam.
Dark Plastic Parts
Ideal for the automotive industry to detect black interior components or rubber seals. BGS overcomes the low reflectivity of dark materials for precise positioning.
Robotic Picking
Detects workpieces on conveyors even if the belt is bright or metallic. BGS completely suppresses background reflections, preventing false triggers for robotic arms.
PCB Component Presence
Utilizes small laser spots to detect the presence of tiny SMT components against the busy, multi-colored background of a printed circuit board.
Precision Manufacturing & Quality
Direct from our ISO-certified facility. We combine high-speed automated SMT lines with rigorous optical calibration to deliver world-class BGS sensors with millimeter accuracy.
Precision Customization Path
From custom cut-off distances to specialized housing for extreme environments, we partner with OEMs to deliver the perfect sensing solution.
Environmental Optical Analysis
Our engineers evaluate your target material's reflectivity and the potential background interference. We determine if a standard LED or a high-precision Class 1 Laser source is required for your specific BGS application.
Calibration & Cut-off Tuning
Standard BGS sensors have fixed or adjustable ranges. We can factory-calibrate the "Hard Cut-off" point to your exact millimeter requirement, ensuring the background is ignored even under microscopic distance variations.
Housing & Interface Adaptation
Choose from IP69K stainless steel for food-grade washdown, or ultra-compact ABS housings for 3C assembly. We also customize cable lengths and connector types (M8/M12/Pigtail) to fit your machine's wiring harness.
Validation & Rapid Delivery
After rigorous stress testing in our optical labs, we provide engineering samples within 72 hours. Once validated, our automated lines scale up to meet your mass production schedule with 100% consistency.
What Our Global Partners Say
From automotive assembly to electronics positioning, XSZ BGS sensors are the top choice for engineers requiring stable detection regardless of target color or background complexity.
"The Low B/W Shift technology in XSZ BGS sensors finally allowed us to detect matte black rubber parts on white plastic trays with zero errors. The sensor ignores the bright background perfectly and focuses only on the target distance."
"We struggled with sensors triggering on the shiny stainless steel conveyor behind our products. XSZ's Precise Cut-off distance is incredibly sharp—it sees the workpiece and completely suppresses everything just 5mm behind it."
"The triangulation precision of these sensors is world-class. Sourcing directly from the XSZ factory allowed us to get custom-calibrated sensing ranges for our newest robot arm project at a much better value than local distributors."
Frequently Asked Questions
Expert answers to the most common technical inquiries regarding our Background Suppression (BGS) sensing technology.
How does BGS differ from a standard diffuse sensor?
Standard diffuse sensors rely on the intensity of reflected light, making them prone to errors when detecting dark objects against light backgrounds. XSZ BGS sensors use Optical Triangulation to measure the reflection angle, allowing them to detect objects based on distance rather than color or surface brightness.
What is "Black/White Shift" and why does it matter?
B/W Shift refers to the difference in detection distance between a white target (90% reflectivity) and a black target (6% reflectivity). A low shift (XSZ models achieve < 2%) ensures the sensor triggers at virtually the same point regardless of the target's color, which is critical for consistent positioning on multi-colored assembly lines.
Can these sensors ignore highly reflective backgrounds?
Yes. Once the cut-off distance is set (via potentiometer or Teach button), any object or surface beyond that point—even mirror-like stainless steel—is completely ignored. This makes BGS ideal for detecting parts on metallic conveyors or shiny machine frames.
What is the smallest object a BGS laser sensor can detect?
Our XSZ-B10 Series laser BGS models use a concentrated Class 1 laser spot (ø 1mm at 100mm), enabling the detection of objects as small as 0.1mm in height. This is perfect for verifying component presence on PCBs or detecting thin washers in automotive assembly.
Still need help with your BGS setup?
Our application engineers can assist with custom cut-off calibration, mounting bracket designs, and NPN/PNP wiring logic.
