Focal Length

20mm

5.7mm

4.3mm

F/#

1.1

1.0

1.2

Wavelength

8-12μm

8-12μm

Interface

Thread

Thread

Thread

Focus Mechanism

Fixed Athermalized

Fixed Athermalized

Fixed Athermalized

Dimensions (mm)

Ø29×25.5

Ø31×34.5

Ø39×19.6

Weight

≤32g

<55g

43.2g

Operating Temperature

-40°C to +80°C

-40°C to +80°C

-40°C to +60°C

Storage Temperature

-45°C to +85°C

-45°C to +85°C

-45°C to +65°C

Front Element Sealing

IP67

IP67

IP67

External Coating

AR

AR

AR

Format

Ø8.2