Pulsatrix Lenses

Pulsatrix 50mm

Janos’ NEW 25, 50 & 100mm Pulsatrix lenses were designed to accommodate the variation of cold shield heights in cooled MWIR cameras.  They have excellence 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

41523-AA1

41661-AA1

41662-AA1

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