Ulf Wallgren

Title: Ulf Wallgren: Innovator in Gas Imaging Technologies

Introduction

Ulf Wallgren, a prominent inventor based in Lidingo, Sweden, has made significant contributions to the field of gas imaging technologies. With two patented inventions to his name, Wallgren's work is paving the way for advanced detection methods that enhance safety and efficiency in various applications.

Latest Patents

Wallgren's latest patents include innovative systems and methods for gas imaging. The first patent describes an infrared (IR) imaging device that utilizes an optical element to receive infrared radiation from a given scene. This device features a filter that blocks IR radiation outside a specific range of wavelengths and incorporates an array of sensor pixels. The design includes a first array for imaging gas within a specific spectral bandwidth and a second array for sensing IR radiation in a different bandwidth where gas detection is not applicable. The invention further includes a read-out integrated circuit (ROIC) and logic circuitry that generates two distinct images—one from the first array and another from the second array—along with gas detection logic to identify gas presence in the first image.

The second patent outlines a system and method for broad-range gas illumination and imaging. This approach involves illuminating a scene with a controllable illuminator system that emits light within the infrared wavelength range. It specifically targets two wavelengths that correspond to different absorption levels of gases, ensuring an equal amount of radiant energy is used over a designated time period. By capturing IR images at both wavelengths and comparing them, the system is capable of determining the presence of specific gases.

Career Highlights

Ulf Wallgren is currently employed at FLIR Systems AB, a leading company in the development of thermal imaging, detection, and analysis technologies. His work there focuses on innovative imaging systems that have a significant impact on safety and security in various sectors.

Collaborations

Throughout his career, Wallgren has collaborated with notable coworkers, including Jonas Sandsten and Tomas Lannestedt. Their collective efforts in research and development have led to advancements in gas detection technologies, making a substantial difference in the industry.

Conclusion

Ulf Wallgren's innovative contributions to gas imaging systems demonstrate his commitment to enhancing detection technologies. With his expertise and patents, he continues to make strides in the field, supporting advancements in safety and efficiency across multiple applications.