DescriptionSpecifications
Models
Catalog PDF
UBBR2.5UBBR1
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Our broadband hollow retroreflectors are 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. Using a novel patented fabrication technique, parallelism up to 1 arc sec and wavefront distortion ≤λ/3 is economically achieved. These retroreflectors are offered in 25.4 or 63.5 mm diameter apertures and 5, 2, or 1 arc sec parallelism. Coatings are available for the UV, visible, and infrared, with damage threshold typically 100 W/cm2 CW or 10 mJ/cm2 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. |
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Specifications
| Material | Pyrex® |
| Wavefront Distortion | ≤λ/3 at 632.8 nm over the full aperture |
| Surface Quality | 80-50 scratch-dig |
| Durability | MIL-C-675C, moderate abrasion |
Coatings
| Coating Protection | Wavelength Range | Total Reflectivity
(minimum)1 |
| Ultraviolet | UV Enhanced Aluminum | 250–600 nm | R >72 % |
| | 250-700 nm | R >64 % |
| Visible | Protected Aluminum | 400–650 nm | R >73 % |
| | 400-750 nm | R >64 % |
| Vis-Infared | Protected Silver | 0.450–12 µm | R >86 % |
| Infrared | Protected Gold | 0.650–12 µm | R >94 % |
1) The sum of reflectivities of all three surfaces.
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UBBR1-1
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Broadband Hollow Retroreflector, 25.4 mm, R>73%, 1 arc sec, 400-650 nm
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UBBR1-1I
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Broadband Hollow Retroreflector, 25.4 mm, R>94%, 1 arc sec, 650-12,000 nm
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UBBR1-1S
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Broadband Hollow Retroreflector, 25.4 mm, R>86%, 1 arc sec, 450-12,000 nm
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UBBR1-1UV
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Broadband Hollow Retroreflector, 25.4 mm, R>72%, 1 arc sec, 250-600 nm
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UBBR1-2
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Broadband Hollow Retroreflector, 25.4 mm, R>73%, 2 arc sec, 400-650 nm
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UBBR1-2I
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Broadband Hollow Retroreflector, 25.4 mm, R>94%, 2 arc sec, 650-12,000 nm
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UBBR1-2S
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Broadband Hollow Retroreflector, 25.4 mm, R>86%, 2 arc sec, 450-12,000 nm
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UBBR1-2UV
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Broadband Hollow Retroreflector, 25.4 mm, R>72%, 2 arc sec, 250-600 nm
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UBBR1-5
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Broadband Hollow Retroreflector, 25.4 mm, R>73%, 5 arc sec, 400-650 nm
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UBBR1-5I
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Broadband Hollow Retroreflector, 25.4 mm, R>94%, 5 arc sec, 650-12,000 nm
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UBBR1-5S
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Broadband Hollow Retroreflector, 25.4 mm, R>86%, 5 arc sec, 450-12,000 nm
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UBBR1-5UV
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Broadband Hollow Retroreflector, 25.4 mm, R>72%, 5 arc sec, 250-600 nm
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UBBR2.5-1
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Broadband Hollow Retroreflector, 63.5 mm, R>73%, 1 arc sec, 400-650 nm
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UBBR2.5-1I
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Broadband Hollow Retroreflector, 63.5 mm, R>94%, 1 arc sec, 650-12,000 nm
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UBBR2.5-1S
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Broadband Hollow Retroreflector, 63.5 mm, R>86%, 1 arc sec, 450-12,000 nm
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UBBR2.5-1UV
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Broadband Hollow Retroreflector, 63.5 mm, R>72%, 1 arc sec, 250-600 nm
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UBBR2.5-2
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Broadband Hollow Retroreflector, 63.5 mm, R>73%, 2 arc sec, 400-650 nm
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UBBR2.5-2I
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Broadband Hollow Retroreflector, 63.5 mm, R>94%, 2 arc sec, 650-12,000 nm
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UBBR2.5-2S
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Broadband Hollow Retroreflector, 63.5 mm, R>86%, 2 arc sec, 450-12,000 nm
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UBBR2.5-2UV
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Broadband Hollow Retroreflector, 63.5 mm, R>72%, 2 arc sec, 250-600 nm
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UBBR2.5-5
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Broadband Hollow Retroreflector, 63.5 mm, R>73%, 5 arc sec, 400-650 nm
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UBBR2.5-5I
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Broadband Hollow Retroreflector, 63.5 mm, R>94%, 5 arc sec, 650-12,000 nm
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UBBR2.5-5S
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Broadband Hollow Retroreflector, 63.5 mm, R>86%, 5 arc sec, 450-12,000 nm
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UBBR2.5-5UV
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Broadband Hollow Retroreflector, 63.5 mm, R>72%, 5 arc sec, 250-600 nm
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