Solutions

Guidelines to build a detection system of moving parts

- What are the techniques to detect objects without contact ?
    1- Optoelectronics devices
    2- Hall effect devices, only for metallic objects

-What are the optoelectronics devices that can detect objects ?
     1- Loose arrangements of emitters and photoreceivers
    2- Integrated combinations of emitters and photoreceivers in pre-designed packages, called Photointerrupters

-What are the applications best suited for loose arrangements ?
      1- If the position over time of the object is random or changing constantly
      2- If the conditions of use are challenging: moisture/ high temperature/ presence of electromagnetic fields/ corrosive atmosphere
      3- If the distance to the object is large
      4- If the objects are big in size 

-What are the selection parameters for loose arrangements ?
       1- Light intensity on axis of the emitter
       2- Photoreceiver function:
                                                   Phototransistor for low optical power budget
                                                   Photodarlington for application circuits requiring high output current
                                                   Logic Photoreceivers for simple ON/OFF output

- What are the applications best suited for Photointerrupters ?
          1- Small objects, plastic or metal
          2- Positions well defined, usually "in" or "out" 

-What are the selection parameters for Photointerrupters ?
              1- Slot with and depth
              2- Overall outline to fit in a limited space
              3- Phototransistor output for average current requirements
              4- Photodarlington output for high output current requirements
              5- Logic photoreceivers for easy to use output signals (ON/OFF)
Note: photointerrupters output are guaranteed by design and final test.





Light in Motion makes the primary optoelectronics devices that enable Function Solutions

FUNCTION		GENERIC SOLUTION	OPTIONS	PRODUCTS
Presence Sensing	long range	Metal Can Emitters/Detectors	Output Optical aperture	Emitters  Detectors
	short range	Molded Emitters/Detectors	Output Optical aperture	Discrete E/D  E/D pairs
Flag Sensing		Optointerrupters	Outline Output	3mm gap with tabs  3mm gap no tab 3mm gap with wires SMD
Encoder Reading		Optointerrupters	Output Optical Aperture	5 mm gap  3mm gap with wires
Object Counting		Molded Emitters/Detectors	Output	Discrete E/D
Proximity		Molded Emitters/Detectors	Output	E/D pairs
Light Sensing		Molded Detectors		SMD Light Detector
Isolation	Low Voltage	COB	Output	Contact us
	High Voltage	Optoisolator	Output	Contact us
Spectroscopy		Metal Can	Wavelength	UVC LED
Light Distribution		COB	Wavelength Lightpipe	Contact us
Illumination		High Power IRLEDs	Optical Aperture	Contact us