Fixed Athermalized IR Lens 40mm f/0.9
The GLA4009KA features passive athermalization, ensuring sharp, stable thermal images across a wide temperature range (−40 °C to +80 °C) without the need for refocusing. Designed for the 8–12 µm spectral band, it offers reliable performance in compact, rugged housings. Ideal for UAVs, thermal imaging cameras, security systems, and industrial or defense applications.
- Focus: fixed athermalized
- Interface: thread
- Compact and lightweight: strong universality and multiple application scenarios (esp. UAVs）
- External coating: great transmission performance and low reflection
Specifications
| HFOV | 160x120 | 320x240 | 336x256 | 384x288 | 640x480 | 640x512 | 1024x768 | 1280x1024 |
| 25µm | 5.7 ° | 11.4 ° | 12.0 ° | 13.7 ° | 22.6 ° | 22.6 ° | ||
| 17µm | 3.9 ° | 7.8 ° | 8.2 ° | 9.3 ° | 15.5 ° | 15.5 ° | 24.6 ° | |
| 12µm | 2.7 ° | 5.5 ° | 5.8 ° | 6.6 ° | 11.0 ° | 11.0 ° | 17.5 ° | 21.7 ° |
Optical
|
Focal Length
|
F/#
|
Wavelength
|
Format
|
|
40mm
|
0.9
|
8-12μm
|
Ø21.8
|
Mechanical
|
Interface
|
Focus Mechanism
|
Dimensions (mm)
|
Weight
|
|
Thread
|
Fixed Athermalized
|
Ø54×51.13
|
226.3g
|
Environmental
|
Operating Temperature
|
Storage Temperature
|
Front Element Sealing
|
External Coating
|
|
-40°C to +80°C
|
-45°C to +85°C
|
IP67
|
AR
|
Optical Accessories
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Knowledge
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June 13,2025Infrared Optical System Structure
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June 16,2025A Review of Athermalized Infrared Imaging Technology Based on Wavefront Coding
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June 17,2025Six Elements Of Selecting Infrared Thermal Imager
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June 17,2025Infrared Thermal Imaging Market Is In Full Swing: Cost Reduction, Standardization, Intelligence
