ILens / Lens Unit
Aspheric ZnSe Lens for QCL. It can be installed into an Aspheric ZnSe Lens Unit A11331-0xH, and can be mounted onto HHL Mount A11709 series
and Pulsed QCL Driver C11635.
GAspheric ZnSe Lens A11331-0x
Parameter
Primary design wavelength
Numerical aperture (NA) NA
Effective diameter
Actual focal distance
Working distance
Periphery
Center thickness
Edge thickness
Material
Symbol
λ
A11331-01
8
A11331-02
5
Unit
µm
—
mm
mm
mm
mm
mm
mm
—
0.78
10
4.8
CA
EFL
WD
OD
CT
ET
—
3.0
14.9 to 15.0
6.4 0.2
6.3 0.2
3
ZnSe
* When using the lens by itself, a lens
holder is required.
Refractive index
AR coating
n
—
2.417 at 8 µm
2.429 at 5 µm
—
—
BBAR, T (ave)>97 % (*1)
BBAR, T (ave)>96 % (*2)
Weight
—
5
g
(*1) T (ave): Average transmittance at wavelength 8 µm to 12 µm
(*2) T (ave): Average transmittance at wavelength 4 µm to 8 µm
ET
Features
A11331-01
BBAR / 8 µm to 12 µm
A11331-02
BBAR / 4 µm to 8 µm
100
90
80
70
60
50
100
90
80
70
60
50
2
4
6
8
10
12
4
6
8
10
12
14
WD CT
Wavelength (µm)
Wavelength (µm)
GAspheric ZnSe Lens Unit A11331-0xH
Parameter
Applicable lens
X/Y movable range
Value
Lens mounting unit
XYZ translator
A11331-01 or A11331-02
1 mm
x in the suffix of the part number indicates the type of embedded lens.
Dimensional outline (unit: mm)
15
7
20.35
O-Ring
Laser
Usage example
A11331-0xH can be mounted on HHL mount A11709 series and pulsed
QCL driver C11635.
WD
2- 1.3
1.035"–40
Mounted on A11709-01
Mounted on A11709-02
Mounted on C11635
4- 6.01
30
30
16
Locking set screws
2-M2.6
HAMAMATSU [ HAMAMATSU CORPORATION ]
