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275mm f/2.0 LWIR Cassegrain Thermal Imaging Lenses for Cooled Detector

Code: 303-051

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Optical Property

Focal Length 275mm Calculated Average Transmission >85%
F/# 2.0 Operating Temperature Range -40℃ to +60℃
Operating Wavelength Range 7.7μm to 9.6μm Focus Range 20m to infinite
Coating on Front Surface Exposing to Air DLC Distortion(Diagonal FOV) <1%

 

Mechanical Property

Focusing Mechanism Manual Installation Way Flange
Weight 3700g Flange Focal Distance  /
Materials of Lens Housing Anodized aluminium Connector  /
Max. Dimensions 380x185x176 Sealing Grade IP54
   
FOV(H X V) 320x256 640x512
15μm   2°x1.6°
30μm 2°x1.6°
275mm
L275F2.0-man
2.0
Manual
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5-6 weeks