GP1S38 Photo Interrupter Sensor (GP1S38 Optical Switch)
The GP1S38 Photo Interrupter is a transmissive optical sensor designed for non contact object detection and position sensing. It integrates an infrared emitting diode and a photodetector placed opposite each other inside a slotted structure. When an object passes through the slot and interrupts the IR beam, the output changes state, enabling accurate detection.
This type of sensor is commonly referred to as an optical guide photointerrupter and is widely used in industrial electronics, automation systems, and embedded applications where precise motion or position sensing is required.
Key Features
- Slotted Photo Interrupter through beam detection
- Integrated IR emitter and photodetector
- High Sensitivity accurate object detection
- Fast Response suitable for high speed switching
- Compact Design easy PCB mounting
- Reliable operation in encoder and motion systems
Specifications
- Sensor Type: Slotted optical photointerrupter
- Sensing Method: Through beam interruption
- Output Type: Phototransistor or logic output depending on version
- Infrared Source: Built in IR LED
- Detection Gap: Fixed slot type sensing
- Response Time: Fast microsecond range
- Mounting Type: Through hole
- Package Type: Compact slotted sensor
Applications
- Encoder systems and speed detection
- Position sensing and limit detection
- Object counting systems
- Printer and paper detection
- Industrial automation and robotics
Pinout Configuration
- Anode IR emitter
- Cathode IR emitter
- Collector phototransistor
- Emitter phototransistor
Working Principle
- IR LED emits light across slot
- Object blocks light path
- Photodetector output changes
- Signal used for switching or detection
