Focal Length

4mm

6mm

12.3mm

F/#

1.2

1.25

1.0

Wavelength

8-12μm

8-12μm

Focus Range

1m-Infinity

Interface

Thread

Thread

Thread

Focus Mechanism

Fixed Athermalized

Fixed Athermalized

Fixed Athermalized

Dimensions (mm)

Ø32×30.73

Ø25×17.4

Ø25×15.8

Weight

52g

<27g

<20g

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

-50°C to +80°C

Front Element Sealing

IP67

IP67

IP67

External Coating

DLC

AR

AR

Format

Ø8.2

Ø8.5