Factory Supply FL19mm F/1.2 Lwir Athermal Infrared Germanium (Ge) Lens for 640×512-12um Thermal Camera Modules

• Customization: Available
• Usage: Medical, Optical, Photography
• Type: Convex Lens
• Model NO.: RSA19F1.2-640-12
• Transmittance: 90%-95%
• Shape: Single-lens
• Material: Optical Glass
• Lenses Color: Clear
• Certification: RoHS, ISO9001
• Customized: Customized
• Coating: Dlc HD Ar
• Focal Length: 19mm
• F#: 1.2
• Detector: 640X512-12um
• Image Diagonal: 9.84mm
• Focus Type: Fixed Focal
• Dimensions: 23mm / 18.43mm
• External Coating: Ar Coating Available
• OEM: Yes
• ODM: Yes
• Transport Package: 150mm*150mm*150mm
• Origin: China
• HS Code: 9001909001
• Production Capacity: 1000/Year
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

Product Parameters

The FL19mm F/1.2 LWIR Athermal Infrared Lens is engineered for 640×512 / 12μm uncooled long-wave infrared detectors, providing stable and precise imaging performance across temperature variations. With an advanced athermal optical design, this compact lens maintains focus accuracy without the need for temperature recalibration, making it ideal for thermal camera modules, UAV payloads, handheld devices, and temperature monitoring systems.

Manufactured by our in-house infrared optics factory, the lens features high-efficiency coating, precision polishing, and strict MTF quality control, ensuring reliable transmission and excellent image contrast in the 8-12μm wavelength range. Our production line supports OEM/ODM customization, from single lenses to complete LWIR optical assemblies.

Key Features:

• Focal Length: 19mm  Aperture: F/1.2

• Athermal design - stable focus across temperature changes

• Optimized for 640×512 / 12μm uncooled LWIR detectors

• High transmission (8-12μm) with low optical aberration

• Compact and lightweight structure for embedded systems

• Ideal for UAV, security, temperature measurement, and portable thermal cameras

• Direct factory manufacturing with strict optical quality control

Focal Length	19mm
F#	1.2
Detector	640x512-12um
Average Transmission	>92%
Circular FOV	(H)22.8°x(V)18.4°x(D)29.4°
Back Focus Distance	15mm
Back Working Distance	8.3mm
Back Focus Length	8.6mm
Dimensions	23mm / 18.43mm
Focus Range	0.5m to infinity
Mount Type	M20x0.5-6g
Weight	18g
Operating Temperature	-40ºC to +80ºC
Storage Temperature	-40ºC to +80ºC
External Coating	AR

Factory Equipment

About Our Factory:
We are a professional infrared lens manufacturer with advanced CNC grinding, diamond turning, and coating facilities. Our factory produces LWIR / MWIR / SWIR optics for global thermal imaging solution providers, offering customized designs, fast lead times, and consistent quality.


 

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Certifications

 

Exhibition

FAQ

Q1: Can OEM or ODM be provided?
A: Yes, we provide customized services for customers. You need to provide us with some technical data, such as dimensions and markings.

Q2: Can items be printed with our own logo?
A: Yes, you only need to send us the source file of the logo.

Q3: Do you provide samples? Is it free or extra?
A: We will charge as little sample fee as possible, and sometimes we may even provide samples for free. However, you must pay us the courier fee by the following courier methods: DHL, TNT, UPS and FEDEX.

Q4: What if the item is broken?
A: Except for human error, we will replace the defect in a completely new way Within 7 days after you get our products.

Q5:What's your leadtime?
A:1 day for inventory and 25~35 days for the new project.
 

Q6:What's your shipping type?

A:Usually by Fedex,DHL,TNT,EMS etc or Customer appointed.