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27mm F2.0 Optical Athermalized Lens for MWIR Thermal Cameras

Code: 311-002

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Optical Parameters:

Focal Length(EFL) 27mm f Number (f#) 2.0
Wavelength Range 3.7~4.8 micro Detector 640x512-15micro
FOV 20.16°x16.19°(25.65°) Coating DLC+AR
Average Transmittance >81% Working Temperature Range -40℃ ~ +50℃ (Need not to refocus)
Maximum Diameter 32mm Overall Optical Length 74.57mm
BFL 32.72mm (8.09mm in air, 24.63mm in detector) Distortion <4%

27mm F2.0 athermaiized lens module is designed for cooled detector ( InSb FPA Focal Plane Arrays) of 640x512-15μm at MWIR wavelength range 3.7~4.8μm, it is optical passively athermalized, and is optimized optically for good MTF and low distortion at temperature range of -40℃ to +50℃. Please see the following data sheet and curves to get more information about this lens module. The improvements and changes of the design is available for customer’s special request.

Curves:

1.MTF@33lp/mm

 

 

 

 

2.Spot Diagram

 

 

3.Relative Illumination

 

 

4.Vignetting

 


 

27mm
M27F2.0-ath
2.0
Athermalized
Enquire
2 month