Hollow Retro-Reflectors
Hollow Retro-reflectors consists of three flat mirrors assembled to reflect the input beam by 180 degrees. Unlike the solid corner cubes, the entire optical path is in air and as a result can be used as a broadband reflector. Additionally, because the hollow retro-reflector is configured with only front surface mirrors, the design reduces the affects of polarization and chromatic aberration. The precision assemble of the flat mirrors in the hollow retro-reflectors insure highly accurate beam deviation. Each retro-reflector is assembled in a black anodized aluminum mount. These “angle insensitive” mirrors have numerous uses in alignment and metrology. Our retroreflectors come standard with protective aluminum for use in the visible spectral region.
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| Housing Diameter (mm) | Housing Inner Dia (mm) | Housing Length (mm) | Beam Deviation (arcsec) | Wavefront Distortion | Surface Quality | Material | Coating | Dimensions tolerance | Clear Aperture |
|---|---|---|---|---|---|---|---|---|---|
| 13.0 | 10.0 | 18.0 | ≤10 | 1λ | 60 - 40 | BK7 | Protective Aluminum | ±0.2mm | 80% of inner diameter |
| 13.0 | 10.0 | 18.0 | ≤30 | 2λ | 60 - 40 | BK7 | Protective Aluminum | ±0.2mm | 80% of inner diameter |
| 25.0 | 20.0 | 25.0 | ≤5 | 1λ | 60 - 40 | BK7 | Protective Aluminum | ±0.2mm | 80% of inner diameter |
| 25.0 | 20.0 | 25.0 | ≤30 | 2λ | 60 - 40 | BK7 | Protective Aluminum | ±0.2mm | 80% of inner diameter |
| 35.0 | 30.0 | 35.0 | ≤5 | 1λ | 60 - 40 | BK7 | Protective Aluminum | ±0.2mm | 80% of inner diameter |
| 35.0 | 30.0 | 35.0 | ≤30 | 2λ | 60 - 40 | BK7 | Protective Aluminum | ±0.2mm | 80% of inner diameter |