FL 50 F/1.0 LWIR Manual Focus Lens For 640x480-17um

Infrared Manual Focus Lens Description:

Focal Length 50mm F1.0 Infrared Manual Focus Lens For 640x480-17um Detector.

8-12um Long Wave Infrared Germanium Lens Apply to Infrared Sights, Thermal Sight Scope, Thermal Imager, Monitor Camera, Drone Monitor

The germanium lens is well-known for its distinct characteristics:

In the world of lenses designed for infrared cameras, germanium glass stands out as the preferred choice due to its exceptional refractive index.

Unlike regular optical glass, it exclusively allows infrared light to pass through, making it perfect for capturing images in low-light situations.

This extraordinary quality enables the detection of hidden animals and plants that would otherwise go unnoticed by the human eye.

However, germanium is a rare element found in limited quantities, resulting in expensive extraction and lens manufacturing.

As a result, the cost of infrared camera lenses tends to be higher compared to standard lenses made from synthetic materials.

Infrared Manual Focus Lens Parameters:

Product Name: Infrared Manual Focus Lens

Focal Length: 50mm

F#: 1.0

Wavelength: 8-12um

Image Diagonal: 13.6mm

Material: Germanium(Ge), Chalcogenide, Zinc Selenide(ZnSe), Zinc Sulfide(ZnS), Silicon(Si)

Detector: 640x480-17um

Average Transmission: ＞88%

Circular FOV: (H)8.9°x(V)6.6°x(D)11°

Back Focus Distance: 17.32mm

Back Working Distance: 9.22mm

Back Focus Length: 20.81mm

Dimensions: φ90mm / 92.8mm

Focus Type: Manual Focus

Focus Range: 3m to infinity

Mount Type: M34x0.75-6g

Weight: 612g

Operating Temperature: -40℃ to +80℃

Storage Temperature: -40℃ to +80℃

External Coating: DLC / AR Coating Available

Infrared Manual Focus Lens Drawing:

Company Profile:

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;

FAQ:

What Are DLC And AR Coating?

Diamond-like carbon (DLC) membrane is an amorphous carbon membrane. The membrane contains a certain number of sp3 bonds, giving it a series of excellent properties close to diamond. It has the advantages of low deposition temperature and large area deposition.

Among various hard membranes, DLC membrane can be positioned as a membrane material with high hardness and excellent wear resistance and low coefficient of friction.

AR (Anti-Reflection) membrane cannot change the absorption rate of the lens itself. It can only increase the transmittance by reducing the reflectance on both sides of the lens, which is the so-called "reflection and antireflection".

Light is an electromagnetic wave. By matching the refractive index and thickness of the AR membrane, the light produces multi-beam interference in the AR membrane-destructive interference on the upper surface and constructive interference on the lower surface.