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Need 100% Cold Stop Efficiency?

Need 100% Cold Stop Efficiency?

Clear Sight, When It Matters Most

Clear Sight, When It Matters Most

Search, Targeting, Zoom for Detail

Search, Targeting, Zoom for Detail

Clarity in Machine Vision

Clarity in Machine Vision

We Offer Diamond Turning

We Offer Diamond Turning

We Manufacture for the Best

We Manufacture for the Best

Custom Optics for Specific Tasks

Custom Optics for Specific Tasks

IR for the Most Critical Applications

IR for the Most Critical Applications

Aerial Targeting

Aerial Targeting

Humvee and man at 50 mm

Humvee and man at 50 mm

Belenus Athermalized LWIR 7.33mm EFL

Athermalized LWIR f/1.46The Belenus LWIR lens offers a fixed focal length of 7.34mm.  Athermalized to withstand widely ranging temperature variations without losing focus.  At .83 lb (349g) and only 2.17 x 2.5′, the Belenus is a tiny workhorse. 

 

f/1.46

In stock matched to the FLIR 640

Custom mounts available to spec

 

Manufactured in the US by Computer Optics, Inc.  Available now, only at IRZoom.com


Lens specifications
Lens Type:&nbsp Stepped-zoom
Spectrum:&nbsp LWIR
Zoom Control:&nbsp Fixed Focal Length
Focal Length (min):&nbsp 7.6mm
Aperture Control:&nbsp Fixed
Aperture (open):&nbsp f/1.46
Image Diagonal:&nbsp 20mm


Mechanical properties
Mass:&nbsp .83 lb (349g)
Mount:&nbsp M34 x 0.5 4g6g Thread (Matched to FLIR 640 Camera) or to Spec
Temperature:&nbsp +10F to +80F (-12.2C to +26.7C)
Length:&nbsp 2.17in (5.5cm)
Width:&nbsp 2.5in (6.35cm)
Height:&nbsp 2.5in (6.35cm)


IRZoom Part Number
Part Number:&nbsp BEL-4909-LWIR-F-1-7


Attachment
File:&nbsp IRZoomcom-LWIR-Atherm-7.33EFL-Belenus.pdf    Size:&nbsp 319471 bytes

Guided Lens Search

Marine Environments

Need 100% Cold Stop Efficiency?

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Need 100% Cold Stop Efficiency?

No Surprises

Clear Sight, When It Matters Most

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Clear Sight, When It Matters Most

IR in Aerospace

Search, Targeting, Zoom for Detail

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Search, Targeting, Zoom for Detail

Commercial Applications

Clarity in Machine Vision

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Clarity in Machine Vision

Precision Manufacturing

We Offer Diamond Turning

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We Offer Diamond Turning

Diamond Turning

We Manufacture for the Best

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We Manufacture for the Best

Scientific Applications for IR

Custom Optics for Specific Tasks

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Custom Optics for Specific Tasks

Medical Applications for IR

IR for the Most Critical Applications

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IR for the Most Critical Applications

IR Applications in Aerospace

Aerial Targeting

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Aerial Targeting

Military Advantage

Humvee and man at 50 mm

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Humvee and man at 50 mm

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