(Translated by https://www.hiragana.jp/)
Photoelectric Sensors Information on GlobalSpec
The Wayback Machine - https://web.archive.org/web/20090309071029/http://sensors-transducers.globalspec.com:80/LearnMore/Sensors_Transducers_Detectors/Proximity_Presence_Sensing/Photoelectric_Sensors
Go to GlobalSpec.com Home
 

Free Registration 
GlobalSpec Home
Find:      Advanced >>
Alert   Product Alerts
Keep current on the latest products, new suppliers, and technical articles of interest to you. (See Topics)
Find Products and Suppliers for
Photoelectric Sensors
 
Research
Photoelectric Sensors
See All Engineering Web Results for Photoelectric Sensors
Limit your Web search to:

Photoelectric Sensors

Find Photoelectric Sensors Manufacturers

Find Photoelectric Sensors by Specification:
More Specifications >>

About Photoelectric Sensors

Photoelectric presence sensors utilize photoelectric emitters and receivers to detect presence, absence, or distance of target objects. They can be categorized into three main categories, through beam, retroreflective, and proximity.  Through beam photoelectric sensors are configured with the emitter and detector opposite the path of the target and sense presence when the beam is broken.  Retroreflective photoelectric sensors are configured with the emitter and detector in the same housing and rely on a reflector to bounce the beam back across the path of the target. This type may be polarized to minimize false reflections.  Proximity photoelectric sensors have the emitter and detector in the same housing and rely upon reflection from the surface of the target. This mode can include presence sensing and distance measurement via analog output. The proximity category can be further broken down into five sub-modes: diffuse, divergent, convergent, fixed-field and adjustable field.  With a diffuse sensor presence is detected when any portion of the diffuse reflected signal bounces back from the detected object.  Divergent beam sensors are short-range diffuse-type sensors without any collimating lenses.   Convergent, fixed focus, or fixed distance optics (such as lenses) are used to focus the emitter beam at a fixed distance from the sensor.  Fixed-field sensors are designed to have a distance limit beyond which they will not detect objects, no matter how reflective.  Adjustable field sensors utilize a cutoff distance beyond which a target will not be detected, even if it is more reflective than the target.  Some photoelectric sensors can be set for multiple different optical sensing modes.  Reflective properties of the target and environment are important considerations in the choice and use of photoelectric sensors.

Important parameters to consider when looking for photoelectric sensors include sensing mode, detecting range, position measurement window, minimum detectable object, and response time.  Sensing modes can be presence or absence and position measurement.  With a presence or absence sensor, the sensor detects presence or absence in an on/off mode.  In a position measurement sensing mode the sensor can detect position in a linear region by the intensity of reflected light.  Analog output is linear with position in the measurement range.  The detecting range is the range of sensor detection.  For presence sensors, this goes up to the maximum distance for which the signal is stable.  For position measurement sensors, this is the distance range over which the position vs. output response is linear and stable.  The position measurement window is the width of linear region for the sensor.  For example, if the sensor could measure between 14 and 24 cm, this window would be 10 cm.  The minimum detectable object is the smallest sized object detectable by the sensor.  The response time is the time from target object entering detection zone to the production of the detection signal.

More >>

Products & Services Related to Photoelectric Sensors

Cable Extension Linear Position Sensors
Cable extension linear position sensors are used to measure the movement and displacement of objects. A cable or wire is attached to an object, and as the object moves, the transducer produces an electrical signal proportional to the wire's linear extension.
Linear Position Sensors and Switches, Ultrasonic
Linear position sensors and switches, ultrasonic, are used for position and displacement sensing, using ultrasonic technology.
Linear Position Sensors, Capacitive
Capacitive linear position sensors are devices that sense position / displacement using capacitance technology.
Linear Position Sensors, Eddy Current
Eddy current linear position sensors detect the distance from a target by using magnetic fields generated by a reference and sensing coils.
Linear Position Sensors, Fiber Optic
Fiber optic linear position sensors use fiber optic technology to sense position and displacement.
Linear Position Sensors, LVDT
Linear variable differential transformer (LVDT) linear position sensors have a series of inductors in a hollow cylindrical shaft and a solid cylindrical core. These devices produce an electrical output proportional to the position of the core
Position Sensors, Optical Triangulation
Optical triangulation position sensors use reflected waves to pinpoint position and displacement.

Other Topics You Might Be Interested In


Engineering Web: Photoelectric Sensors

Pages: 1 - 3 of 674

Photoelectric Sensors
Inductive Proximity Sensors Photoelectric Sensors Inductive Distance Sensors Photoelectric Distance Sensors
Photoelectric Sensors
Photoelectric Sensors Choose, Research & Enquire Photoelectric Sensors & Controls. Online Catalog, Free Tech Support!
SUNX Sensors - Factory Automation Solutions - Panasonic
Welcome to the SUNX sensors home page. SUNX industrial sensors solve the needs of many sensing applications around
More >>

Part Numbers for Photoelectric Sensors

Part # Distributor Manufacturer Product Category Description
E3S-5B4-ND Digi-Key Omron Electronics Inc-IA Div Sensors, Transducers PHOTOELECTRIC SENSOR
E3S-5E41-ND Digi-Key Omron Electronics Inc-IA Div Sensors, Transducers PHOTOELECTRIC SENSOR
E3S-DS10B4-5M-ND Digi-Key Omron Electronics Inc-IA Div Sensors, Transducers PHOTOELECTRIC SENSOR
E3S-DS30E41-ND Digi-Key Omron Electronics Inc-IA Div Sensors, Transducers PHOTOELECTRIC SENSOR
E3HC-DS3E2-ND Digi-Key Omron Electronics Inc-IA Div Sensors, Transducers PHOTOELECTRIC SWITCH

More >>
View Specifications
Supplier Data Sheets
Featured Products
Sensors, Transducers and Detectors Home
View Suppliers by State