Infrared LEDs Produce Highly Collimated Outputs

Oct. 13, 2003

Highly collimated output beam angles of ±2° and ±4° are possible with the CLE351 and CLE355 IR LEDs, respectively. Packaged in PLCCs, they can be operated up to 1 A when pulsed at 10 µs, at a rate of 100 pulses/s. Maximum operating temperature range is up to 100°C. The former contains an aluminum-gallium-arsenide (AlGaAs) source die. It delivers 300-µW/cm² maximum irradiance at I_F of 20 mA and 5-ns rise and fall times at V_F of 1.7 V and I_Fof 20 mA. The latter contains an AlGaAs DDH die. It delivers 1.5-mW output power minimum at I_F of 1.5 µW and has rise and fall times of 20 ns and 40 ns at maximum V_F of 1.7 V and I_Fof 20 mA. In 1000-unit quantities, they're priced at $1.86 and $1.32 each, respectively, with delivery in four to six weeks.

Clairex Technologies Inc.www.clairex.com; (972) 422-4676

About the Author

Roger Allan

Roger Allan is an electronics journalism veteran, and served as Electronic Design's Executive Editor for 15 of those years. He has covered just about every technology beat from semiconductors, components, packaging and power devices, to communications, test and measurement, automotive electronics, robotics, medical electronics, military electronics, robotics, and industrial electronics. His specialties include MEMS and nanoelectronics technologies. He is a contributor to the McGraw Hill Annual Encyclopedia of Science and Technology. He is also a Life Senior Member of the IEEE and holds a BSEE from New York University's School of Engineering and Science. Roger has worked for major electronics magazines besides Electronic Design, including the IEEE Spectrum, Electronics, EDN, Electronic Products, and the British New Scientist. He also has working experience in the electronics industry as a design engineer in filters, power supplies and control systems.

After his retirement from Electronic Design Magazine, He has been extensively contributing articles for Penton’s Electronic Design, Power Electronics Technology, Energy Efficiency and Technology (EE&T) and Microwaves RF Magazine, covering all of the aforementioned electronics segments as well as energy efficiency, harvesting and related technologies. He has also contributed articles to other electronics technology magazines worldwide.

He is a “jack of all trades and a master in leading-edge technologies” like MEMS, nanolectronics, autonomous vehicles, artificial intelligence, military electronics, biometrics, implantable medical devices, and energy harvesting and related technologies.