Alba Lenses

Alba Diagram

This 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 #
40471-AA1
40579-AA1
40736-AA1
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