The UBBR1-2 Broadband Hollow Retroreflector is constructed of three front-surface flat mirrors assembled into a corner cube. A stress-free mounting technique is employed to ensure dimensional stability. This geometry results in a reflected beam that is precisely parallel to the incident beam, independent of the angle of incidence. Unlike solid glass retroreflectors, the optical path is entirely in air so efficient performance is obtained without antireflection coatings which limit the operating wavelength range. This retroreflector with greater than 80% total reflectivity has a 25.4 mm diameter aperture, and is coated for 400 to 700 nm operation. The damage threshold is typically 100 W/cm CW or 10 mJ/cm with 10 nsec pulses. The rugged aluminum and plastic housing is compatible with Newport mounts and components. Each unit has a backplate with an array of holes to accommodate various mounting requirements.


UBBR1-2宽频带中空反射镜是由三个前表面的平面反射镜组装成一个角立方体构成的。采用无应力安装技术，保证了尺寸的稳定性。这种几何结构使得反射光束与入射光束完全平行，与入射角无关。与固体玻璃反射器不同，该光路完全在空气中，因此不需要限制工作波长范围的防反射涂层就可以获得高效的性能。该反射镜的总反射率大于80%，孔径为25.4 mm，涂层可达400 ~ 700 nm。损伤阈值通常为100 W/cm CW或10 mJ/cm，外加10 nsec脉冲。坚固的铝和塑料外壳是兼容的新港安装和组件。每个单元都有一个带有孔阵列的背板，以适应各种安装要求。