ROHM debuts high-speed VCSEL optical sensor for precision object detection
ROHM has introduced the RPR-0730, a compact analog optical sensor designed for high-precision detection of fast-moving objects in consumer, industrial, and office equipment. The company states the sensor is aimed at applications ranging from printers to conveyor systems, the new device leverages VCSEL technology to deliver markedly improved directional accuracy and ultra-fast response performance.
For eeNews Europe readers working in automation, robotics, and smart manufacturing, the sensor’s combination of speed, precision, and small footprint seems to offer a compelling new option for next-generation system designs. Its ability to detect extremely fine marks and objects could be particularly relevant for engineers pushing throughput and accuracy in compact equipment architectures.
High-precision detection enabled by VCSEL technology
According to ROHM, at the core of the RPR-0730 is an infrared VCSEL light source that provides significantly higher directionality than conventional LEDs. Paired with an analog-output phototransistor, the device achieves a 10 µs response time, which is fast enough to detect lines as narrow as 0.1 mm. ROHM notes that such fine-line detection has been difficult to achieve using traditional LED-based reflectors, making the RPR-0730 an enabling component for the latest high-speed equipment.
Positioned as an analog counterpart to the company’s RPR-0720 digital-output series, ROHM says the new sensor brings enhanced performance to applications like print detection in copiers and label printers, as well as rotational monitoring in motors and gears. As industrial and office systems continue to automate and accelerate, ROHM argues that high-speed, high-precision sensing has become essential for maintaining reliability and preventing errors.
ROHM launches the RPR-0730 optical sensor
Compact package for next-gen equipment integration
Measuring just 2.0 × 1.0 × 0.55 mm, the RPR-0730 can fit into the increasingly tight mechanical spaces of modern machinery. ROHM also said it incorporates a visible-light-filtering resin to mitigate interference from ambient light or direct sunlight, enabling stable operation in factory, office, and even outdoor environments.
Broad application scope
ROHM highlights several key use cases, including:
- Print and paper-path detection in label printers, copiers, and shredders
- Workpiece position sensing and object detection in conveyor and inspection systems
- Motor and gear rotational detection in industrial robots
The company states it will continue to build on its expertise in light-emitting and receiving elements to develop smaller, more capable sensing devices that support ongoing equipment miniaturization and performance gains.
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