FL25mm F1.1 Long Wave Thermal Sight Lens For 640x512-17um

What Determines the Quality of infrared Lens:

1. Number of Lenses Used: Combining different types of infrared lenses can improve focus and color accuracy, but it may also reduce the amount of light that passes through.

2. Light Transmittance: High-quality infrared lenses with excellent light transmittance tend to be more expensive, while lower quality infrared lenses may block light from passing through.

3. Coating and Grinding: The quality of the infrared lens is also affected by the technology used for coating and grinding.

4. Mechanical Precision: The internal mechanical structure of infrared lens impacts its accuracy and reliability. A poor quality mechanical structure can cause errors and inconsistencies in adjustments.

Thermal Sight Lens Parameters:

Product Name	Infrared Aiming Lens
Focal Length	25mm
F#	1.1
Wavelength	8-12um
Image Diagonal	13.93mm
Detector	640x512-17um
Average Transmission	＞94%
Circular FOV	(H)24.5°x(V)18.5°x(D)30.4°
Back Focus Distance	18mm
Back Working Distance	8.5mm
Back Focus Length	20mm
Dimensions	50mm / 31.1mm
Focus Type	Manual Focus
Focus Range	1m to infinity
Mount Type	M45x1-6g
Weight	110g
Operating Temperature	-40℃ to +80℃
Storage Temperature	-40℃ to +80℃
External Coating	AR Coating Available

Infrared Lens Processing Equipment:

1. Inner carving test platform;

2. Microscope;

3. Opto Tech aspheric processing;

4. Polishing machine;

5. Thickness Gauge;

6. Ultrasonic Cleaner;

7. Workshop;

8. Interferometer;

9. High and low tempera ture test chamber;

10. High polishing machine;

11. Optical bench;

12. Raul milling;

13. Atomic force microscope;

14. Centralinstrument;

15. Hand Grinding and Polishing Machine;