LUXEON UV U1 Offers 2× Performance Smallest UV Emitter

Lumileds recently announced the LUXEON UV U1 LED for use in a variety of UV applications, including UV curing, counterfeit detection, analytical instrumentation, inspections and other UVA and Violet (380–420 nm). Featuring the same micro package size as LUXEON Z UV, the new version enables a higher power density.

The LUXEON UV U1 LED is nominally tested at 500 mA, but it can be driven at up to 1 A to achieve higher irradiances. For the application of UV curing at 395 nm, LUXEON UV U1 achieves 700 mW at 500 mA and greater than 1300 mW at 1 A under 25°C. Compared to the 3.5 × 3.5 mm2 package size of most UV LEDs, LUXEON UV U1’s unique micro package size delivers superior packing density as well as greater than 5× higher power density. The LUXEON UV U1’s footprint is a drop-in replacement for the LUXEON Z UV, while providing twice the typical radiometric power as its predecessor at 380–390 nm.

Source: Lumileds

Next-Gen Optical Sensors Enhance UV Protection & Gesture Recognition

Silicon Labs’s new optical sensors are intended to protect consumers from ultraviolet (UV) radiation and enable you to develop touchless user interfaces. The Si1133 optical sensor provides a cost-effective solution for adding highly accurate UV index measurement capabilities to a variety of products (e.g., sports equipment).SiliconLabs Si1153

The Si1133 sensor enables you to accurately measure UV index levels and monitor UV exposure. You can implement it in a variety of outdoor recreation products (e.g.,  fitness wearables).

The Si1133’s specs and features:

  • ±1.5 on the UV scale
  • Ambient light sensing supporting less than 100 mlx resolution and operation under dark glass
  • Highly integrated solution reducing cost and complexity with on-chip dual 23-bit
  • ADCs, DSP, and high-sensitivity visible light, UV, and IR photodiodes
  • I2C serial communications with up to 3.4 Mbps data rate
  • 500-nA standby current
  • Small 2 mm × 2 mm QFN package

The Si1153 ambient light sensor is optimized for operation in bright daylight. You can use it for gesture control and proximity detection applications. The new sensor can be used outdoors over an extended range of up to 2 m, which makes ideal for the gesture-based operation of automotive infotainment systems, bicycle computers, and more.

The Si1153’s specs and features:

  • Proximity detection adjustable from 1 to 200 cm
  • Up to three LED drivers for motion detection
  • Ambient light sensing supporting less than 100 mlx resolution and operation under dark glass
  • On-chip dual 23-bit ADCs, DSP, and high-sensitivity visible light and IR photodiodes
  • I2C serial communications with up to 3.4 Mbps data rate
  • 500-nA standby current
  • 2 mm × 2 mm QFN or 2.9 mm × 4.9 mm module with LED

Samples and production quantities of the Si1133-AA00-GM UV index sensor are available for $1.13 in 10,000-unit quantities. Samples and production quantities of the Si1153 proximity/gesture detection sensor are also available. The extended-range Si1153-AA00-GM costs $1.84in 10,000-unit quantities. The Si1153-AA09-GM with enhanced daylight performance costs $1.91 in 10,000-unit quantities. The Si1153-AA9X-GM module with integrated IR LED costs $2.32 in 10,000-unit quantities. The 115XOPT-EXP-EVB evaluation kit is available for $44.43.

Source: Silicon Labs