Slotted optical switches (also called opto switches) are devices that provide status indications (on or off) when light beams are interrupted in various types of instruments, systems and equipment.
The switches contain phototransistors, which are illuminated by infrared light from the LEDs. The illumination causes the phototransistors to conduct. If objects are then placed into the slots between the transistors and the LEDs, the interruption of the light beams causes the transistors to switch off.
Optical slotted switches may also house rotating discs with holes around the rims. These holes spin within the light paths of the switches to create on and off pulses and direct the speed of the spinning discs.
What are slotted optical switches used for?
Slotted optical switches are used in assembly line production systems, machine automation and machine safety indicators.
The switches are standard in computer peripherals like printers, where the projection images get interrupted when they reach the end of their travel.
Types of slotted optical switches
Slotted optical switches are classified by their output mechanisms (buffers, inverters, interrupters), mounting types (through hole, panel, surface) and the number of pins located on the switches.
Description:
The F3S-TGR-CL light beam is a multi-beam sensor
designed for perimeter and access protection which complies with EN 61496-1. The light beams are available in Category 2 (PL c) and Category 4 (PL e) with integrated muting function. The F3S-TGR-CL ...
Description:
The F3SJ-E light curtain is ideal for straight
forward on/off detection applications as it simply stops the machine upon detection of personnel. The light curtains reduced wiring, quick mount brackets and easy to view alignment beams mean fast and easy ...
Description:
Omron EE-S series slotted optical switches are available
in a variety of mounting styles and sizes. They consist of an infrared LED and a phototransistor housed in a moulded package. Types EE-SSX3... and EE-SX4... also include an integral schmitt trigger ...
Description:
GP1A173LCS3F is a standard, low voltage operation, OPIC
output, transmissive photointerrupter with opposing emitter and detector in a case, providing non-contact sensing. For this family of devices, the emitter and detector are inserted in a case, and a 3-pin connector ...
