ROHM offers a range of proximity sensors that combine light-emitting and light-receiving elements in a single package, providing unparalleled versatility that has led to their widespread adoption in a broad range of applications, from mobile devices to industrial equipment. ROHM has developed a compact proximity sensor that integrates a VCSEL and a sensor IC, specifically for portable devices, in response to the growing demand for small-sized proximity sensors that allow for improved design and increased part counts through enhanced functionality.
The RPR-0720 is an optical sensor module that uses a VCSEL (a type of rectified light sensor) with higher directivity than LEDs as the light-emitting element and a sensor IC as the light-receiving element. Its compact size is achieved by optimizing the module's structure with custom-designed chips, reducing the footprint by approximately 78% compared to conventional products. Simultaneously, the wide input voltage range (2.7V to 4.5V) of the integrated VCSEL eliminates the need for a peripheral voltage boost circuit (i.e., consisting of a power supply IC, three capacitors, and an inductor) when using a lithium-ion battery. This contributes to further space savings, resulting in smaller applications and increased battery capacity. This makes it suitable not only for detecting attachment/detachment but also for sensing various conditions across a wide range of applications.
In the future, ROHM will continue to develop detection products that meet customer needs by combining original light-receiving and emitting elements to further improve energy savings and convenience.
Product range
Application Examples
Suitable for a wide range of applications that use light reflection to detect conditions.
Detection of connection/disconnection of wireless headphones, smartwatches, game controllers, virtual reality headsets, and similar devices.
Detection of paper in printers, copiers, shredders, and other office equipment.
Detection of e-cigarette cartridges/liquids.
Detection of various conditions on smartphones and laptops.
evaluation board
also offers an evaluation board for the compact RPR-0720 proximity sensor (RPR-0720-EVK).
