VCSEL Module Technology

Increasing the Output of Spatial Recognition and Ranging Systems by 30%

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ROHM’s VCSEL technology achieves greater accuracy in spatial recognition and distance measuring systems by using Time Of Flight (TOF) systems.

VCSEL has become popular in recent years with the adoption of laser light sources for spatial recognition in tablets and facial recognition in smartphones. And with the emergence of Automated Guided Vehicles (AGVs) and industrial inspection systems utilizing gesture and shape recognition, the demand for VCSEL is expected to increase.

At the same time, for applications that require automation, shorter pulse drives and higher output for the light source are required to achieve higher accuracy sensing.

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Laser Diodes

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Motor Drivers

In addition to standard types, ROHM offers application-specific motor driver that deliver excellent reliability and efficiency over a range of voltages, currents, pin configurations, and package types. Protection circuits are also included to further enhance reliability and performance.

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Optical Sensors

ROHM's considerable lineup of optical sensors include high sensitivity, high reliability phototransistors,infraredlight emitting diodes,transmission/reflective type photointerrupters.

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Thermal Printheads

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Motor Drivers

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Optical Sensors

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Conventionally, in VCSEL-equipped laser light sources, both the VCSEL device and MOSFET for driving the light source are individually mounted on the board. Consequently, the wiring length (parasitic inductance) between products has an unintentional effect on the light source output and drive time – making it difficult to achieve a light source that provides the high output and short pulses needed for high accuracy sensing.

VCSEL module technology developed by ROHM makes it possible to modularize the VCSEL and MOSFET elements into a single package. By minimizing the wiring length between elements, the performance of each element is maximized, resulting in a light source capable of short pulse drive (under 10ns) that reduces susceptibility to external noise from sunlight while enabling up to 30% higher output over conventional solutions.

ROHM laser diodes offer excellent temperature characteristics along with high COD and ESD resistance for barcode scanners used in receipt management. Adopting an end-face window structure prevents localized heat generation and overcurrent damage due to static electricity. At the same time, stable temperature characteristics are ensured, with low temperature dependence that contributes to lower power consumption and longer life.

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ROHM's considerable lineup of optical sensors include high sensitivity, high reliability phototransistors,infraredlight emitting diodes,transmission/reflective type photointerrupters

LEARN MORE

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