UBBR2.5

Broadband Hollow Retroreflectors

New Silver Coating
Parallelism to 1 arc sec
UV, visible, VIS-IR or IR coatings
Wavefront distortion ≤λ/3
Stress-free mounting for thermal stability
25.4 and 63.5 mm aperture sizes

< >

Overview
Specifications
Ordering
Drawings
Literature & Downloads

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.

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

Wavelength Spectrum	Coating Protection	Wavelength Range	Total Reflectivity (minimum)¹
Ultraviolet	UV Enhanced Aluminum	250–600 nm	R >72 %
Ultraviolet	UV Enhanced Aluminum	250-700 nm	R >64 %
Visible	Protected Aluminum	400–650 nm	R >73 %
Visible	Protected Aluminum	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.

Model	Description	avail raw	Availability	price raw	Price	Qty. MULTI ADD
UBBR1-1	Broadband Hollow Retroreflector, 25.4 mm, R>73%, 1 arc sec, 400-650 nm	5	5 Weeks	1207	$1,207.00	ADD
UBBR1-1I	Broadband Hollow Retroreflector, 25.4 mm, R>94%, 1 arc sec, 650-12,000 nm	0	In Stock	1249	$1,249.00	ADD
UBBR1-1S	Broadband Hollow Retroreflector, 25.4 mm, R>86%, 1 arc sec, 450-12,000 nm	5	5 Weeks	1343	$1,343.00	ADD
UBBR1-1UV	Broadband Hollow Retroreflector, 25.4 mm, R>72%, 1 arc sec, 250-600 nm	5	5 Weeks	1199	$1,199.00	ADD
UBBR1-2	Broadband Hollow Retroreflector, 25.4 mm, R>73%, 2 arc sec, 400-650 nm	5	5 Weeks	759	$759.00	ADD
UBBR1-2I	Broadband Hollow Retroreflector, 25.4 mm, R>94%, 2 arc sec, 650-12,000 nm	0	In Stock	839	$839.00	ADD
UBBR1-2S	Broadband Hollow Retroreflector, 25.4 mm, R>86%, 2 arc sec, 450-12,000 nm	5	5 Weeks	839	$839.00	ADD
UBBR1-2UV	Broadband Hollow Retroreflector, 25.4 mm, R>72%, 2 arc sec, 250-600 nm	5	5 Weeks	829	$829.00	ADD
UBBR1-5	Broadband Hollow Retroreflector, 25.4 mm, R>73%, 5 arc sec, 400-650 nm	5	5 Weeks	599	$599.00	ADD
UBBR1-5I	Broadband Hollow Retroreflector, 25.4 mm, R>94%, 5 arc sec, 650-12,000 nm	0	In Stock	639	$639.00	ADD
UBBR1-5S	Broadband Hollow Retroreflector, 25.4 mm, R>86%, 5 arc sec, 450-12,000 nm	5	5 Weeks	659	$659.00	ADD
UBBR1-5UV	Broadband Hollow Retroreflector, 25.4 mm, R>72%, 5 arc sec, 250-600 nm	5	5 Weeks	639	$639.00	ADD
UBBR2.5-1	Broadband Hollow Retroreflector, 63.5 mm, R>73%, 1 arc sec, 400-650 nm	5	5 Weeks	1359	$1,359.00	ADD
UBBR2.5-1I	Broadband Hollow Retroreflector, 63.5 mm, R>94%, 1 arc sec, 650-12,000 nm	0	In Stock	1429	$1,429.00	ADD
UBBR2.5-1S	Broadband Hollow Retroreflector, 63.5 mm, R>86%, 1 arc sec, 450-12,000 nm	0	In Stock	1461	$1,461.00	ADD
UBBR2.5-1UV	Broadband Hollow Retroreflector, 63.5 mm, R>72%, 1 arc sec, 250-600 nm	0	In Stock	1429	$1,429.00	ADD
UBBR2.5-2	Broadband Hollow Retroreflector, 63.5 mm, R>73%, 2 arc sec, 400-650 nm	5	5 Weeks	979	$979.00	ADD
UBBR2.5-2I	Broadband Hollow Retroreflector, 63.5 mm, R>94%, 2 arc sec, 650-12,000 nm	0	In Stock	1090	$1,090.00	ADD
UBBR2.5-2S	Broadband Hollow Retroreflector, 63.5 mm, R>86%, 2 arc sec, 450-12,000 nm	5	5 Weeks	1226	$1,226.00	ADD
UBBR2.5-2UV	Broadband Hollow Retroreflector, 63.5 mm, R>72%, 2 arc sec, 250-600 nm	5	5 Weeks	1070	$1,070.00	ADD
UBBR2.5-5	Broadband Hollow Retroreflector, 63.5 mm, R>73%, 5 arc sec, 400-650 nm	0	In Stock	769	$769.00	ADD
UBBR2.5-5I	Broadband Hollow Retroreflector, 63.5 mm, R>94%, 5 arc sec, 650-12,000 nm	2	2 Weeks	869	$869.00	ADD
UBBR2.5-5S	Broadband Hollow Retroreflector, 63.5 mm, R>86%, 5 arc sec, 450-12,000 nm	5	5 Weeks	869	$869.00	ADD
UBBR2.5-5UV	Broadband Hollow Retroreflector, 63.5 mm, R>72%, 5 arc sec, 250-600 nm	5	5 Weeks	869	$869.00	ADD

Model UBBR1

Model UBBR2.5

Newport Resource e-Catalogs *