The LBTEK hollow retroreflector is coated with a protected silver film, offering high reflectivity in the visible to infrared range (Ravg > 96% @ 450 nm - 2 μm, Ravg > 97.5% @ 2 μm - 20 μm), making it suitable for beam retroreflection and interferometry in the visible to infrared spectrum. This series is available in three standard sizes: half-inch, 1-inch, and 2-inch, with corresponding clear apertures of Ø0.60 inches, Ø0.90 inches, and Ø1.80 inches, respectively, to accommodate various beam diameters and system space requirements. Among them, the half-inch and 1-inch versions are paired with an SM05 threaded mount, while the 2-inch version is paired with an SM1 threaded mount, allowing direct adaptation to internally threaded optical mounts of the same specification.This series of hollow retroreflectors uses a mirror assembly process. When the beam directly hits the mirror assembly junction, scattering or light leakage may occur. Please ensure proper laser protection during use.

The LBTEK hollow retroreflector is coated with a protective gold film, offering high reflectivity in the infrared band (Ravg > 96% @ 800 nm – 20 μm), making it suitable for infrared optical path retroreflection and interferometric measurements. This series provides three standard sizes: 1/2 inch, 1 inch, and 2 inches, with corresponding effective clear apertures of Ø0.60 inches, Ø0.90 inches, and Ø1.80 inches, respectively, to meet different beam diameters and system space requirements. The 1/2-inch and 1-inch versions are paired with SM05 threaded mounts, while the 2-inch version uses an SM1 threaded mount, allowing direct compatibility with optical mounts of the same thread specification.This series of hollow retroreflectors uses a mirror splicing technique. When the beam directly hits the splicing joints, scattering or light leakage may occur. Please take proper laser protection during use.

LBTEK hollow retroreflectors are coated with a protective UV-enhanced aluminum film, offering high reflectivity in the ultraviolet band (Ravg > 90% @ 250 nm - 450 nm), making them suitable for UV optical path retroreflection and interferometry. This series provides three standard sizes: half-inch, 1-inch, and 2-inch, with corresponding effective clear apertures of Ø0.60 inches, Ø0.90 inches, and Ø1.80 inches respectively, meeting the assembly requirements of different beam diameters and system spaces. Among them, the half-inch and 1-inch versions are paired with SM05 threaded mounts, while the 2-inch version uses an SM1 threaded mount, enabling direct compatibility with standard optical mounting accessories such as internally threaded optical mounts and coaxial mounting plates of the same specifications.This series of hollow retroreflectors adopts a mirror splicing process. When the beam directly hits the splicing area, scattering or light leakage may occur. Please ensure proper laser protection during use.