Download Broadband Hollow Retroreflectors

O p t i c s — 439
SELECTION GUIDE
Broadband Hollow Retroreflectors
Key Features
• Parallelism to 1 arc sec
• UV, visible, or infrared coatings
SPHERICAL LENSES
• Wavefront distortion ≤λ/3
• Stress-free mounting for thermal
stability
• 25.4 and 63.5 mm aperture sizes
UBBR1
UBBR2.5
Material
Wavefront Distortion
Pyrex®
≤λ/3 at 632.8 nm over the full aperture
Surface Quality
Durability
OPTICAL SYSTEMS
Specifications
KITS
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.
CYLINDRICAL LENSES
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 which is precisely parallel to the incident beam independent of the angle
of incidence.
80-50 scratch-dig
MIL-C-675C, moderate abrasion
Coatings
Wavelength Range
Total Reflectivity1
UV Enhanced Aluminum
Protected Aluminum
Protected Gold
250–600 nm
450–650 nm
1–12 µm
R >72%
R >79%
R >82%
MIRRORS
Ultraviolet
Visible
Infrared
Coating Protection
1) The sum of reflectivities of all three surfaces.
PRISMS
Phone: 1-800-222-6440 • Fax: 1-949-253-1680 • Email: [email protected] • Web: newport.com
SELECTION GUIDE
440 — O p t i c s
Ordering Information
Coating
5
5
5
2
2
2
1
1
1
Ultraviolet
Visible
Infrared
Ultraviolet
Visible
Infrared
Ultraviolet
Visible
Infrared
CYLINDRICAL LENSES
SPHERICAL LENSES
Parallelism
(arc sec)
Model UBBR1
Model
Aperture
25.4mm
Model
Aperture
63.5 mm
UBBR1-5UV
UBBR1-5
UBBR1-5I
UBBR1-2UV
UBBR1-2
UBBR1-2I
UBBR1-1UV
UBBR1-1
UBBR1-1I
UBBR2.5-5UV
UBBR2.5-5
UBBR2.5-5I
UBBR2.5-2UV
UBBR2.5-2
UBBR2.5-2I
UBBR2.5-1UV
UBBR2.5-1
UBBR2.5-1I
Model UBBR2.5
ø 41.1
ø 82.5
M6 THD
46.7
12.7
79.5
7.9
6.4
23.1
KITS
44.5
15.2
4 HOLES,
ø 7.4 CLR,
50.6
PATTERN
41.4
M6 THD
82.8
1/4-20
THD
23.1
4 HOLES,
1/4-20 THD,
ø 50.8 PATTERN
4 HOLES,
M6 THD,
ø 50.0 PATTERN
4 SLOTS,
7.1 x 8.0,
ø 100.8 PATTERN
1/4-20 THD
41.4
PRISMS
MIRRORS
OPTICAL SYSTEMS
Post mounted retroreflector
Phone: 1-800-222-6440 • Fax: 1-949-253-1680 • Email: [email protected] • Web: newport.com