Optics
477
Lenses with diameters of 6.325 mm or larger are available mounted in a stainless steel 304 holder with a threaded exterior. The
numerical aperture is the same as the corresponding unmounted lens, but the working distance is slightly different.
Model
Model
Lens Holder Type
Working Distance
(mm)
0.15
MT9
16.70
KGA280-A-MT
$77
KGA280-B-MT
$77
0.16
MT9
13.60
KGA260-A-MT
$77
KGA260-B-MT
$77
0.18
MT9
11.74
KGA560-A-MT
$86
KGA560-B-MT
$86
0.25
MT9
7.56
KGA220-A-MT
$86
KGA220-B-MT
$86
0.40
MT9
3.18
KGA110-A-MT
$86
KGA110-B-MT
$86
0.50
MT12
5.60
KGA240-A-MT
$116
KGA240-B-MT
$116
0.55
MT9
2.47
KGA080-A-MT
$86
KGA080-B-MT
$86
0.55
MT9
2.59
KGA230-A-MT
$86
KGA230-B-MT
$86
0.60
MT9
2.04
KGA671-A-MT
$86
KGA671-B-MT
$86
0.62
MT9
2.49
KGA340-A-MT
$86
KGA340-B-MT
$86
0.68
MT9
1.71
KGA330-A-MT
$86
KGA330-B-MT
$86
400-600 nm
600-1050 nm
M 12-0.5 THREAD
M9-0.5 THREAD
ø12.22
ø5.75
ø9.24
ø8.50
6.50
Working Distance
CYLINDRICAL AND
SPECIALTY LENSES
6.50
Lens Holder MT9
SPHERICAL LENSES
3.20
3.20
LENS SELECTION GUIDE
Numerical Aperture
TECHNICAL REFERENCE AND
FUNDAMENTAL APPLICATIONS
Mounted Lenses
Working
Distance
Lens Holder MT12
Spherical Ball Micro Lenses
• Ideal for laser-to-fiber, fiber-to-fiber, and fiber-todetector coupling
OPTICS SETS
• High coupling efficiency
• Four available diameters
Specifications
OPTICAL SYSTEMS
Spherical ball lenses are commonly used for laser collimating and focusing, laser-to-fiber
coupling, fiber-to-fiber coupling, and fiber-to-detector coupling.
CA
Material
LaSF N9, grade A, fine annealed optical glass
Wavelength
450–2300 nm, uncoated
Refractive Index
n830 = 1.83098, n1300 = 1.81764, n1550 = 1.81329
WD
Diameter Tolerance
±1 µm
Spherical Tolerance
≤λ/4 at 587.6 nm
Focal Length
(mm)
Working Distance
(mm)
Clear Aperture
(mm)
f/CA
LB1
1.0
0.55
0.05
0.8
0.69
LB2
2.0
1.10
0.10
1.6
0.69
LB3
3.0
1.65
0.15
2.4
0.69
LB5
5.0
2.75
0.25
4.0
0.69
Model
Uncoated
Email: [email protected] • Web: newport.com
Ball Lens Modules—
561-BL1, 561-BL2,
and 561-BL3 (see
page 938)
PRISMS
Diameter
(mm)
MIRRORS
Ordering Information