Asio Lenses
Many years ago, the infrared camera companies standardized the back working distance (BWD), stop location and F# for MWIR systems. The Asio line supports these imagers and is designed to create an image size large enough to support the focal planes of the past and present. With the wide range of applications, this line has the largest selection available including single FOV, multi-FOV and microscopes. It attaches to the camera with a bayonet mount, and there are a number of optional accessories available.
Microscopic Objectives
For close inspection of small components using infrared imagery, Janos has designed a line of microscope objectives for mid-wave thermal imagers. The line includes magnifications of 1x, 2.5x, and 4x. The front objective section is interchangeable with the same “eyepiece” that mounts to the camera. Every effort was made to maximize the distance from the lens to the object being inspected. These lenses interface with the bayonet mount.
Please contact us for more information on these lenses.
Focal Length |
7mm |
13mm |
25mm |
50mm |
100mm |
Part Number |
|||||
F# |
2.3 |
2.3 |
2.3 |
2.3 |
2.3 |
Wavelength |
3 – 5µm |
3 – 5µm |
3 – 5µm |
3 – 5µm |
3 – 5µm |
Image Diagonal |
21mm |
21mm |
21mm |
21mm |
21mm |
Stop Size |
11mm |
11mm |
11mm |
11mm |
11mmm |
Stop Position |
25.4mm |
25.4mm |
25.4mm |
25.4mm |
25.4mm |
BWD |
33.1mm |
33.1mm |
33.1mm |
33.1mm |
33.1mm |
Flange to F.P. |
39.4mm |
39.4mm |
39.4mm |
39.4mm |
39.4mm |
Mount Type |
B |
B |
B |
B |
B |
Circular FOV (degrees) *** |
110 |
75 |
45 |
23 |
11 |
Weight (g) |
500 |
227 |
227 |
213 |
880 |
Min. Obj. Dist. ** |
30mm |
50mm |
200mm |
500mm |
1750mm |
Focus Type |
M |
M |
M |
M |
M |
Transmission (typical)* |
95% |
92% |
92% |
92% |
92% |
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