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Home » All Product » LWIR Lens » Athermalized Infrared Lens » FL 19mm F/1.0 LWIR Athermal Lens For 640x512-17um

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FL 19mm F/1.0 LWIR Athermal Lens For 640x512-17um

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Focal Length 19mm F1.0 Infrared Germanium Lens For 640x512-17um Detector.
Availability:
  • RSA19F1.0-640-17-A4

  • Rising

Infrared Athermal Lens Description:

Focal Length 19mm F1.0 Infrared Germanium Lens, Infrared Athermal Lens For 640x512-17um Detector, Apply to Infrared Sights Scope, Drone Monitor, Car Monitor, etc.


The temperature coefficient of refractive index of infrared materials is 1 to 2 orders of magnitude larger than that of visible light glass. 


In the field of high-precision detection and early warning, infrared systems are required to work in the temperature range of -40°C~+60°C, so changes in ambient temperature have a great impact on The performance of the infrared system is greatly affected.


Infrared Athermal Lens Parameters:

Product Name Infrared Athermal Lens
Focal Length 19mm
F# 1.0
Image Diagonal 13.93mm
Detector 640x512-17um
Average Transmission >94%
Circular FOV (H)33°x(V)26°x(D)41.6°
Back Focus Distance 8.8mm
Back Working Distance 4.5mm
Back Focus Length 8mm
Dimensions 25mm / 23.8mm
Focus Type Fixed Focal
Focus Range
3m to infinity
Mount Type M22x0.5-6g
Weight 26g
Operating Temperature -40℃ to +80℃
Storage Temperature -40℃ to +80℃
External Coating AR Coating Available

infrared lens (3)

Why the lens autofocus is not clear?

There are several reasons why the autofocus of a lens may not be clear. These reasons can be checked one by one:


1. If there is a large moving target in the lens screen during the focusing process (occupying more than 1/3 of the picture), it can be refocused.


2. If the lens has been used for a long time, the gear, CAM and other transmission parts may have worn out, resulting in unclear focus. In this case, the module or control board parameters can be adjusted to restore clear focus.


3. If there are hardware problems, such as a malfunctioning potentiometer, the faulty hardware should be replaced.


Company Profile:

ir lens (5)

Infrared Lens Processing Equipment:

ir lens

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;

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