Ritt Gunnar, Eberle Bernd
Fraunhofer Institute of Optronics, System Technologies and Image Exploitation IOSB, Gutleuthausstr. 1, 76275 Ettlingen, Germany.
Sensors (Basel). 2015 Jan 5;15(1):792-802. doi: 10.3390/s150100792.
Progress in laser technology has led to very compact but nevertheless powerful laser sources. In the visible and near infrared spectral region, lasers of any wavelength can be purchased. Continuous wave laser sources pose an especially serious threat to the human eye and electro-optical sensors due to their high proliferation and easy availability. The manifold of available wavelengths cannot be covered by conventional safety measures like absorption or interference filters. We present a protection concept for electro-optical sensors to suppress dazzling in the visible spectral region. The key element of the concept is the use of a digital micromirror device (DMD) in combination with wavelength multiplexing. This approach allows selective spectral filtering in defined regions of interest in the scene. The system offers the possibility of automatic attenuation of dazzling laser radiation.
激光技术的进步已带来了非常紧凑但功率强大的激光源。在可见光和近红外光谱区域，可以买到任何波长的激光器。连续波激光源因其广泛扩散且易于获取，对人眼和电光传感器构成了特别严重的威胁。现有的多种波长无法通过诸如吸收或干涉滤光片等传统安全措施来覆盖。我们提出了一种用于电光传感器的保护概念，以抑制可见光光谱区域的眩光。该概念的关键要素是将数字微镜器件（DMD）与波长复用相结合。这种方法允许在场景中定义的感兴趣区域进行选择性光谱滤波。该系统提供了自动衰减耀眼激光辐射的可能性。
