Athermalized LWIR Lens 3.6mm F/1.0 Description
Athermalized LWIR Lens 3.6mm F/1.0 is a high-performance lens designed for use in long-wave infrared (LWIR) imaging systems. Featuring an advanced athermalized design, this lens maintains consistent focus and image quality across a wide temperature range, making it ideal for demanding environments. With a focal length of 3.6mm and a fast F/1.0 aperture, it delivers exceptional thermal sensitivity and a wide field of view, ensuring precise detection and imaging in low-light or challenging conditions. This lens is optimized for applications such as thermal imaging cameras, surveillance systems, industrial inspection, and firefighting equipment. Its durable construction and precision engineering make it a reliable choice for professionals requiring accurate and high-quality infrared imaging performance.
Athermalized LWIR Lens 3.6mm F/1.0 Specifications

HFOV
|
160x120
|
256x192
|
320x256
|
384x288
|
17μm
|
41.4
|
-
|
-
|
-
|
12μm
|
29.9
|
46.2
|
-
|
-
|
Optical Properties
Focal Length (mm)
|
3.6mm
|
F/#
|
1.0
|
Average Transmission
|
>92%
|
Back Focal Length
|
4.7mm
|
Environmental Durability
Operating Temperature
|
-40℃ to +60℃
|
Storage Temperature
|
-50℃ to +70℃
|
Protection Rating
|
IR67
|
First Surface Coating
|
AR
|
Mechanical Properties
Focusing Range
|
0.3m~∞
|
Back Working Distance
|
4.3mm
|
Detector Interface Size
|
M17 x 0.5-6g
|
Overall Dimensions (mm)
|
Φ23.3 x 13.5
|
Weight
|
20g
|
*For drawing, please contact us.
Athermalized LWIR Lens 3.6mm F/1.0 Application
Used in infrared thermal cameras to capture high-quality thermal images for industrial, security, and scientific applications.
Ideal for security and surveillance cameras, providing clear and precise thermal imaging in low-light or no-light conditions.
Used in thermal imaging devices for firefighters to detect heat sources, identify hotspots, and navigate through smoke-filled environments.
Helps in inspecting machines, electrical equipment, and buildings by identifying temperature variations that indicate faults or inefficiencies.
Athermalized LWIR Lens 3.6mm F/1.0 Packing
Our Athermalized LWIR Lens 3.6mm F/1.0 is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
FAQs
Q1: What is an athermalized LWIR lens?
An athermalized LWIR lens is designed to maintain its focus and optical performance over a wide range of temperatures, minimizing the effects of thermal expansion or contraction on the lens elements. This ensures consistent image quality and clarity in varying environmental conditions.
Q2: What is the significance of the 3.6mm focal length?
The 3.6mm focal length offers a wide field of view, which is ideal for applications such as thermal imaging, security surveillance, and industrial inspections where a broader coverage area is required.
Q3: How does the athermalized design improve performance?
The athermalized design compensates for temperature-induced focus shifts, maintaining sharpness and clarity in a wide range of environmental conditions. This is especially important for devices used outdoors or in environments with fluctuating temperatures.
Specification

HFOV
|
160x120
|
256x192
|
320x256
|
384x288
|
17μm
|
41.4
|
-
|
-
|
-
|
12μm
|
29.9
|
46.2
|
-
|
-
|
Optical Properties
Focal Length (mm)
|
3.6mm
|
F/#
|
1.0
|
Average Transmission
|
>92%
|
Back Focal Length
|
4.7mm
|
Environmental Durability
Operating Temperature
|
-40℃ to +60℃
|
Storage Temperature
|
-50℃ to +70℃
|
Protection Rating
|
IR67
|
First Surface Coating
|
AR
|
Mechanical Properties
Focusing Range
|
0.3m~∞
|
Back Working Distance
|
4.3mm
|
Detector Interface Size
|
M17 x 0.5-6g
|
Overall Dimensions (mm)
|
Φ23.3 x 13.5
|
Weight
|
20g
|
*For drawing, please contact us.