Electronic Products & Technology

VCSEL-based reflective optical sensor saves space, boosts performance

EP&T Magazine   

Electronics Optoelectronics Power Supply / Management optical Sensor

VISHAY INTERTECHNOLOGY VCNT2030 reflective optical sensor delivers improved performance with a higher current transfer ratio (CTR), increased sensing distance and lower power consumption. Device features a vertical-cavity surface-emitting laser (VCSEL) and a silicon phototransistor in a miniature 1.85mm by 1.2mm by 0.6mm surface-mount package. Device features a compact construction in which the emitting light source and detector are arranged in the same plane. It offers improved internal crosstalk suppression due to the VCSEL’s narrow ±17° emission angle, which also enables improved proximity performance behind cover glass. Device’s analog 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. Product delivers a sensing distance of 15mm, which is three times higher than the closest competing device on the market.

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