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sensors & sensing sYstems


compact high performance reflective optical sensor


A compact yet high performance reflective optical sensor for industrial, computer, consumer and mobility applications has been launched by the Optoelectronics group of Vishay Intertechnology. The VCNT2030 features a vertical-cavity surface-emitting laser


(VCSEL) and a silicon phototransistor in a 1.85 x 1.2 x 0.6mm surface-mount package. The device offers excellent internal crosstalk suppression due


to the VCSEL’s narrow ± 17˚ emission angle, which also enables improved proximity performance behind cover glass. The VCNT2030’s analogue output signal at the phototransistor is dependent on the amount of light emitted by the VCSEL and reflected off an object in the sensor’s field of view. The device also provides a sensing distance of 15mm, which is said to be three times higher than the closest competing device on the market. The sensor offers a detection range of 0.3mm to 6mm, an


emitter wavelength of 940nm, and a typical output current of 2.5mA, which represents a typical CTR of 31% under test conditions. It also features a Moisture Sensitivity Level (MSL) of 3 for reflow soldering according to J-STD-020. With its compact footprint, the VCNT2030 saves >40 % PCB


space compared to previous-generation devices, allowing the sensor to serve as a space-saving solution for optical switching in industrial infrastructure, home and building controls, notebook and desktop computers, home appliances, consumer electronics, and metering applications; optical encoding for motor control in e-bikes, golf carts, tractors, and harvesters; and paper presence detection in printers and scanners.


Vishay Intertechnology www.Vishay.com


proDUcts


OPTICAL DISTANCE SENSORS FOR PRECISE mEASuREmENT, EVEN WITH CHALLENGING TARGETS


A new generation of OGD optical distance sensors which reliably measure distances up to 2m with an accuracy of 1mm – even with fast-moving, reflective, multicoloured and other challenging targets – has been launched by ifm electronic. The new sensors use PMD time-of-flight technology, delivering superior performance to conventional laser and red-light sensors, the company explains. Unlike their predecessors, the new models allow users to choose from three operating modes optimised for range, precision and frequency. Of benefit, the sensors offer excellent reflection resistance


and background suppression, and their range is angle and colour independent, allowing them to operate reliably even with challenging targets such as reflective metal surfaces. In addition to distance, the new sensors simultaneously measure target reflectivity, providing additional information that can, for example, be used for product sorting.


Heavy-duty versions with stainless


steel housings, and light-duty versions with plastic housings, are available. An integral display


shows the current measured value and can be configured to change colour to indicate an out-of-tolerance or alarm condition.


ifm electronic www.ifm.com/gb/en


Redefining precision. Increasing efficiency. Optimizing space.


R2 and R3 Series Small Photoelectric Sensors


A comprehensive family of miniature photoelectric sensors makes it easy to design the perfect solution for a wide range of applications.


Innovative DuraBeam laser technology for increased durability and a broader operating temperature range. www.pepperl-fuchs.com/r2r3


septemBer 2023 DESIGN SOLUTIONS 25


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