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Athermal Lenses

Athermal Diagram Characteristics:

F#
1.0
Wavelength
7 - 14µm
Image Diagonal (mm)
21
Stop Size
N/A
Stop Position
N/A

Designed for 25µm pitch detectors, this long wave athermal lens is able to maintain focus as ambient temperatures change between -20°C to 50°C, without the need of a motorized focus. This lens offers a more compact and cost effective solution for security applications where system access may be limited or impractical. The absence of a stop location makes this lens ideal for uncooled LWIR systems. This lens meets an IP54 standard, and is best suited for enclosed or sheltered camera systems.

This line is available in focal length 50mm, see below table.

 

Available Focal Lengths:

Focal Length
50mm
Part Number
41440-AA2
BWD (mm)
6.91
Flange to F.P. (mm)
10.9
Mount Type
Threaded
Circular FOV (degrees) ***
24
Weight (g)
894
Min. Obj. Distance ** (mm)
500
Focus Type
Manual
Transmission (typical) *
93%
Hard Carbon Coating Available
No

We offer mounts & other accessories for this line.

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, 7 - 14µm.

 
 
 
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