Alba Lenses
The Alba line has all the same design features as the Asio, except for the slower F#. This line is made up of longer focal length options for high performance, long range IR surveillance applications. The slower F# allows for the optical design to be more compact while still yielding acceptable performance. This line includes our highly acclaimed actively thermal, motorized Triple Field of View lens. This line allows for the bayonet mount and the use of other accessories. Contact us for further information.
Focal Length |
100mm
|
200mm
|
350mm
|
Part # | |||
F# |
4.0
|
4.0
|
4.0
|
Wavelength |
3 – 5µm
|
3 – 5µm
|
3 – 5µm
|
Image Diagonal |
21mm
|
21mm
|
21mm
|
Stop Size |
6.25mm
|
6.25mm
|
6.25mm
|
Stop Position |
25.4mm
|
25.4mm
|
25.4mm
|
BWD |
33.1mm
|
33.1mm
|
33.1mm
|
Flange to F.P. |
39.3mm
|
39.3mm
|
39.3mm
|
Mount Type |
B
|
B
|
B
|
Circular FOV (degrees) *** |
11
|
6
|
3.44
|
Weight (g) |
2835
|
567
|
1361
|
Min. Obj. Distance ** |
3000mm
|
7000mm
|
10,000mm
|
Focus Type |
M
|
M
|
M
|
Transmission (typical) * |
N/A
|
N/A
|
N/A
|
Notes
*** Based on the listed Image Diagonal, FOV will vary depending on focal plane size.
** Closest an object can be focused in on.
* Over the primary waveband, 3 – 5µm.
Mount Type:
B = Bayonet Mount
M = Manual Focus
MT = Motorized Focus
TFOV – Triple Field of View