Reflective Sensors

Reflective optical sensors are used in a wide range of applications requiring reflective sensors that do not only detect the presence of an object but also its relative proximity.

Features

Unfocused for sensing diffused surface
SMT package
High uniformity
Very stable measurements
High gain phototransistor
No contact surface sensing
Low profile
Low cost
Milling on the backside for side PCB mounting

Reflective Optical Sensors: Design and Specifications

Model	Type (SMD)	Element	Dimension (mm)	Wavelenght (nm)	T°/Range (°C)
OIER2	Fototransistor	2 + RED LED	6,1x4,7	635	-25 / 85
OIER3	Fototransistor	2 + Infrared LED	6,1x4,7	875	-25 / 85

What is a reflective photoelectric sensor, and how does it work?

Reflective optical sensors consist of LEDs and photoreceivers (phototransistors or photodiodes) and are used on distance meters, proximity sensors, and presence sensors.
These optical components allow the detected object to either reflect or interrupt a certain amount of light emitted by a diode emitter, making it possible to detect objects regardless of material.

Datasheets

OIER2

OIER3

All products

Photodiodes

Photodiode arrays are used in rotary and linear encoders, optical barriers, presence sensors and optical and X-ray sorting machines. The photodiode arrays are available in SMD plastic or ceramic, Metal TO and Chip-on-Board (COB) packages. The standard OID7 photodiode component is 100 % compatible with OPR2100.Features: High Responsivity (> 0.65 A/W @ = p) High quantum efficiency (> 90% @ Vr=5V) Extended temperature range -40°C +125°C Wide active area Fast response time Low Dark Current Fully compatible with OPR2100-OL2100-PA2100

Special Detectors

We can realise special and customised components based on specific customer requirements. Encoder components without encapsulating resin provide superior robustness and are thus able to withstand thermal shocks.Features Resistant to soldering processes, MSL2 High uniformity of silicon cells (< 10%) Monolithic construction Low optical pitch (0.45mm) High temperature range Reference holes on the package for precise mounting Reference dots on the package for high accuracy mounting Reticle assembly service available

Phototransistors

Phototransistors are semiconductor devices that amplify the current generated by the photovoltaic effect using junctions; these optical components offer similar performance to the photodiode but are much more sensitive to light. Specifically, a phototransistor is a semiconductor device that can detect light levels and alter the current flow between the emitter and collector according to the amount of light received.Features High uniformity of silicon cells High temperature range High transparency resin High gain Designed to meet industrial specifications Reference holes for precise mounting Reference dots for very precise mounting