15mm F/1.0 LWIR Manual Focus Lens For 640x480-17um/ 384x288-17um

Infrared Manual Focus Lens Description:

Focal Length 15mm F1.0 Infrared Manual Focus Lens Germanium Optical Lens For 640x480-17um and 384x288-17um Detector.

8-12um Wavelength IR Ge Lens, Manual Foucs Infrared Optical Lens.

Optical Correction for Infrared Lens:

Generally speaking, a single spherical lens cannot correct chromatic aberration, which means that a positive lens produces negative chromatic aberration, while a negative lens produces positive chromatic aberration. However, by combining glass with different refractive index and chromatic aberration, it is possible to eliminate chromatic aberration.

One effective way to achieve this is by using a double lens group or doublet lens group composed of positive and negative lenses of appropriate shape. This simple structure can be used to achromatize and reduce dispersion, making it a commonly used method for optical infrared correction.

Optical correction helps to reduce the distance between focal planes by decreasing the separation of infrared and visible light caused by dispersion and refraction. For lenses with a short focal length, the deviation between the focal planes of infrared and visible light is minimal after optical correction, resulting in little impact on image clarity. However, as the focal length increases, dispersion increases, leading to a greater deviation between the focal planes of infrared and visible light. Optical correction cannot achieve clear images for both at the same time in this case.

Infrared Manual Focus Lens Parameters:

Company Profile:

Our company specializes in manufacturing a range of products for various industries including medical, life science, national defense and security, semiconductor, and industrial OEM markets. These products include infrared lenses, germanium lenses, night vision objective lenses, thermal camera modules, and other specialized instruments and equipment.

From the initial optical design to material procurement and finally mass production, our company is dedicated to optimizing product performance, cost, quality, and delivery time.

To ensure the highest product quality, all items undergo rigorous machine testing and are confirmed with customers before being loaded and exported.

With the support of our professional engineers, efficient sales team, and competitive pricing, we have successfully attracted customers from around the globe. Our products are primarily sold in developed regions like Southeast Asia, North America, Europe, Russia, Japan, and South Korea. We have received widespread acclaim and attention, establishing Rising as a trusted supplier for numerous OEM customers and research institutions worldwide.

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 Coatings?

Diamond-like carbon (DLC) film is an amorphous carbon film. The film 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.

In various hard films, DLC film can be positioned as a film material with high hardness, excellent wear resistance and low friction coefficient.

AR (anti-reflection) film does not change the absorption rate of the lens itself. It can only increase the transmittance by reducing the reflectivity on both sides of the lens, which is called "reflection and anti-reflection".

Light is an electromagnetic wave. By matching the refractive index and thickness of the AR film, the light generates multiple beam interferences in the AR film - cancelling interference on the upper surface and phasing interference on the lower surface.