Hollow Retroreflectors are constructed of three front-surface mirrors assembled into an aluminum corner cube. It likes the solid glass prismtype retroreflectors, the parallel incident light is reflected back to the source with great accuracy, regardless of the angle of incidence. Reflected images are both inverted and reversed. Since the optical path is in air, this configuration eliminates material absorption and chromatic aberrations present in solid glass prism-type retroreflectors. By adopting the elastic installation method, the stability is guaranteed and the effect of stress is reduced.
Daheng Optics' Hollow Retroreflectors precisely combines three reflectors at 90 degrees. The assembled unit features exceptional angular accuracy (<5 arcseconds), ensuring precise 180° optical path reversal, along with low wavefront distortion (λ/3) that avoids interfering with the incident beam.
Using an elastic mounting approach, it ensures stability while reducing stress effects. Users can optionally equip the hollow retroreflector with the simple adapters of the GCM-0706 series or GCM-03 series to easily position them in the optical path. Alternatively, custom connections can be made using the M4 threaded holes on the backplate of the corner cube mirrors, both offering convenience.