Pulsatrix Lenses
Janos’ NEW 25, 50 & 100mm Pulsatrix lenses were designed to accommodate the variation of cold shield heights in cooled MWIR cameras. They have excellent performance on 640 x 512 x 0.015 detectors with cold shield heights at 19.6 and 18.57 mm from the FPA. They perform equally as well on 640 x 512 x 0.025 detectors with a longer cold shield height of 27.64mm. The interface is the MWIR industry standard Janos Bayonet (Part Number 40566-001). They have a standard back working distance of 33.10mm. All Pulsatrix lenses have a provision for a warm filter that conveniently screws into the 1.70-32-UNS-2B thread in the back housing of the lens.
If you would like to review our ICD, STEP, MTF, and Transmission files please Contact us.
| Effective Focal Length |
25mm |
50mm |
100mm |
|
Part Number |
|||
|
Detector |
640 x 512 – 15µm & 25µm |
640 x 512 – 15µm & 25µm |
640 x 512 15µm & 25µm |
|
F# |
2.5 |
2.5 |
2.5 |
|
Wavelength |
3 – 5µm |
3 – 5µm |
3 – 5µm |
|
Image Diagonal |
12.3mm – 15µm & 20.5mm – 25µm |
12.3 – 15µm & 20.5mm – 25µm |
12.3 – 15µm & 20.5mm – 25µm |
|
Cold Stop Height (Stop Position) |
19 – 15µm & 25.4mm – 25µm |
19 – 15µm & 25.4mm – 25µm |
19 – 15µm & 25.4mm – 25µm |
|
BWD |
33.1mm |
33.1mm |
33.1mm |
|
Flange to F.P. |
39.34mm |
39.4mm |
39.4mm |
|
Interface / Mount Type |
B |
B |
B |
|
Horizontal FOV (Degrees) |
22.2 – 15µm & 37.8 – 25µm |
18.2 – 15µm & 11.0 – 25µm |
5.5 – 15µm & 9.1 – 25µm |
|
Vertical FOV (Degrees) |
17.7 – 15µm & 29.9 – 25µm |
14.6 – 15µm & 8.8 – 25µm |
4.4 – 15µm & 7.3 – 25µm |
|
Diagonal FOV (Degrees) |
28.7 – 15µm & 49.5 – 25µm |
23.4 – 15µm & 14.1 – 25µm |
7.0 – 15µm & 11.7 – 25µm |
|
Focus Range |
200mm to Infinity |
500mm to Infinity |
1.8 Meters to Infinity |
|
Weight (g) |
< 230 |
< 210 |
< 1,200 |
|
Focus Type |
Manual/Lockable |
Manual/Lockable |
Manual/Lockable |
|
Transmission (typical)* |
> 96% |
> 96% |
>96% |
|
Warm Filter Option |
Yes |
Yes |
Yes |
|
Athermal |
No |
No |
No |
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