Ref Description Light & Color Sensors

 light and color sensors play a crucial role in ensuring product quality, automation accuracy, and production efficiency. These sensors are designed to detect, measure, and differentiate light intensity, presence, and color properties in a wide range of processes. Used extensively in automated sorting, printing, packaging, food processing, electronics, automotive, and textile industries, these sensors enable high-speed, non-contact inspection and real-time process control by detecting visual attributes that are invisible to conventional proximity or motion sensors.   light and color sensors operate based on optical sensing technology, often involving LEDs, photodiodes, and spectral analyzers.  Photoelectric Sensors Diffuse Type: Emits light that reflects off the target and returns to the sensor. leelavati automation Retroreflective Type: Uses a reflector to bounce light back to the sensor; detects presence or absence.   Through-beam Type: Uses a separate transmitter and receiver; highly accurate and resistant to environmental noise.Ambient Light Sensors Measure overall light levels in an area to adjust illumination or detect product exposure to light-sensitive environments. olor Sensors Identify specific colors using RGB detection or full-spectrum analysis.   Work by shining white or RGB LED light and analyzing reflected wavelengths using filters or photodiodes. Contrast Sensors Designed to detect transitions between light and dark marks (e.g., print marks on packaging).   Operate at high speeds to synchronize cutting, labeling, or printing operations.  Luminescence Sensors Detect invisible markings (fluorescent inks, glues) that emit UV or visible light when exposed to UV illumination.Gloss & Reflectivity Sensors Measure surface finish quality (e.g., shiny vs. matte) by analyzing specular vs. diffuse reflection. Light IntensityLux, candelalx, cd Wavelength RangeNanometersnm Color DetectionRGB / HSV values— Switching FrequencyHertzHz Response TimeMillisecondsms Detection DistanceMillimeters / Metersmm / m Food & BeverageCap color verification, label presence, fill level detection AutomotivePart sorting by color, paint quality inspection, ambient light detection PharmaceuticalPill color recognition, blister pack verification PackagingPrint mark detection, barcode alignment, transparent object sensing TextilesYarn color sorting, pattern alignment, gloss detection ElectronicsLED color grading, connector presence, PCB component detection Plastic & Injection MoldingMolded part color consistency, defect detection Printing & LabellingInk contrast detection, registration mark verification  Sensor Materials & Designleelavati automation Sensors are engineered with robust materials to withstand factory conditions:   Housing: Polycarbonate, PBT, stainless steel (SS304) for harsh/clean environments.   Lenses: Glass or acrylic lenses with anti-reflective coatings.   Sealing: IP65/IP67 enclosures for dust- and splash-proof operation.   Mounting: DIN-rail, bracket, or panel mount with adjustable optics. PNP/NPN (Digital)On/off object detection in automation Analog (0–10V / 4–20mA)Light intensity / gloss variation Serial (RS232/RS485)Color value output or light-level logging IO-LinkSmart sensor configuration and monitoring Modbus / EthernetIntegration into SCADA or PLC systemsDistance to object and object size   Surface reflectivity and ambient light conditions leelavati automation Speed of the production line   Color or contrast variation range   Required switching frequency   Electrical interface compatibility (PNP/NPN, analog, Modbus, etc.) Basic Photoelectric Sensor  Advanced Contrast Sensor  Color Sensor (RGB/HSV)  Gloss/Luminescence Sensor leelavati automation IO-Link Enabled Smart Sensor  Most sensors carry a warranty of 12 to 24 months, extendable based on manufacturer policies. Rugged industrial models from brands like SICK, IFM, Keyence, Baumer, Pepperl+Fuchs, Banner, Leuze, OMRON, Panasonic, Contrinex, and Balluff offer:   High repe