|Focal Length (EFL)||13mm||f Number (f#)||2.0|
|Wavelength Range||3.7~4.8 micro||Detector||640x512-15micro|
|Average Transmittance||>81%||Working Temperature Range||-40℃ ~ +50℃ (Need not to refocus)|
|Maximum Diameter||24mm||Overall Optical Length||75mm|
|BFL||29.63mm (5mm in air, 24.63mm in detector)||Distortion||<5%|
13mm F2.0 athermalized lens module is designed for cooled detector ( InSb FPA Focal Plane Arrays) of 640x512-15μm at MWIR wavelength range 3.7~4.8micro, 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.
3.Field Curve and Distortion