Wednesday, February 6, 2019

How is Germanium Lens Made?

What are Germanium lenses, and how do they work? Before we drive into what germanium lens is, you must know what Germanium is in general. Germanium is a chemical element that has an atomic number of 32. The element is hard, lustrous, and has a grayish-white metalloid in the carbon group.

Since Germanium is almost identical to silicon when it comes to looks and appearance, it is often viewed as the "twin" of silicon because it reacts naturally and makes complexes with oxygen in nature just like silicon does. Additionally, germanium is one of the few chemical elements that expands as it solidifies ( freezes) from its molten state of being.

Germanium lenses are a special type of lense where rays cannot penetrate though the lenses and appears to black to the human eye. Since Germanium is a very expensive mineral, people are required to have special skills for polishing it to its highest precision. Germanium rarely occurs naturally, which is some of the reasons why its so expensive. However, Germanium can be made from coal that burns off and makes Germanium as a by-product, and zinc ores by processing dust from the flues of zinc smelters.

Using Germanium in solar panels can be very useful because it has similar isotopes to silicon, so that the current can be made with "free" elections that break away from the orbits of germanium atoms. Even though germanium is cheaper than silicon, it is still used in products such as camera lenses, inside cores of fiber- optic cables, microscope lenses, fluorescent lamps, and some LED lighting. Germanium isn't known to have health benefits, but there is research being conducted to see if it could be used to fight off cancer cells. However, Germanium is mainly used in optics and electronics.

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Sunday, December 9, 2018

Germanium Lens


Germanium lens are made using germanium material which is a relatively hard, of high density, IR transmitting material. This material can block UV and VIS wavelengths. On the side it can allow IR from 2 µm.

Germanium material is very suitable for designing lens since its refractive index with the ability to support impossible specifications to be created. Common applications of germanium lens include thermal imaging where the Germanium material can be used as a front optic while its index of refraction helps the lens to support wide-angle lenses.

Germanium lens are best in mid-infrared applications. They work very well in harsh environments . Shanghai optics offers the most known sizes having Anti-Reflection Coatings. The lens is likely to be affected by thermal runaway in that, when the temperature goes high the transmission goes down.


The Germanium lens are specified to be used at temperatures not exceeding 100 degrees Celsius. 5.33 g/Cm3, which is the Germanium’s highest density is put into consideration when making designs for weight-sensitive systems. Germanium lens are very good in IR applications requiring rugged optics.

This is attributed by the Knoop Hardness which is 780. In summary, Germanium lens have high Index of Refraction, minimal Chromatic Aberration due to low dispersion, ideal for Rugged IR applications as well as having popular sizes containing AR coating from 3-12 µm.


Germanium lens can have various manufacturing limits which include; Anti-reflection coating of 3-12 µm, clear aperture having more than 85% of central dimension, surface figure of a quarter length each 633 nm, surface quality after coating of 20-10, Focal length of positive or negative one percent and lens of diameter 5 mm-350 mm. Additionally, Germanium lens can be manufactured containing different shapes like spherical plano-concave, P-Convex, Concave-Convex and Aspheric.


Germanium lens are tested with Zygo interferometer and spectrophotometer. This is the standard testing items which ensures the lens is of high quality.

Thursday, November 8, 2018

Professional Fields that Require the use of a Germanium Lens

When it comes to optical lenses, most people are aware of the lenses used to correct a person's vision and those used in cameras. There are actually a large number of devices that require the use of precision lenses. Even the lenses found in cameras need to be manufactured to exact specifications in order to work properly.

A germanium lens is made using a material that allows for the passing of infrared light rays. Since most lenses have a silica base, these light rays are not able to pass. This means any type of device used for thermal imaging needs to be made with a germanium lens.

Quality Lens Manufacturers 

Thermal imaging is widely used in the medical profession. For this reason it is extremely important for the manufacturers of devices using germanium lenses to use a superior lens manufacturing company. The cameras designed to detect the heat or radiation emanating from a specific source, need to have lenses built that conform to the range of the space they will be able to detect the infrared rays. They also need to fit whatever type of mount or aperture they will be placed in.

Custom Designed Optics 

In addition to being widely used in the field of medicine, a germanium lens could also used for scientific research and is commonly found in cameras created for security systems. The military also uses infrared technology. Many of the devices found in these fields are created on an as needed basis, which means the lenses they use might have to be custom designed.

A lens manufacturing company such as Shanghai Optics, could offer these lenses as factory standards or custom creations. Some of the standard shapes for these lenses include variations of both concave and convex surfaces. They are also available with an anti-reflection coating.

Monday, April 9, 2018

Cylindrical Lenses For Your Work Projects

You may purchase cylindrical lenses for your work projects at any time, and you must purchase the lenses from a place that offers the best imagery possible. You are hoping to refract as much light as possible, and you need lenses that suit your needs. This article explains how you may order new lenses for your company that work in all situations.

#1: What About Cylindrical Lenses?

You must purchase cylindrical lenses that you believe are the proper size for your projects. There are quite a few projects that you may complete with a simple lens that you bought online, and there are quite a few different people who may use these lenses to shine a light anywhere you need.

#2: How Large Are The Lenses?

You must find lenses in a number of sizes that you like. It is very simple for you to use the lenses because they come in multiple sizes. You must use the lenses every day to get the results that you like, and you may continue to use the lenses every day with similar results.

#3: How To Store The Lenses

The lenses are easy to store when you get them into a case, and the case may be carried anywhere you want. It is quite simple for you to pull them out when needed, and you may bring them to any clients who may need this resource.

The Cylindrical Lens used for your business projects must be chosen with a bit of wisdom and necessity. You often have new things come up that you must deal with, and that is the perfect time for you to purchase a new lens. The lens works well in all situation, and you must continue to build your collection until you have every lens available on the market.

Sunday, March 11, 2018

The Best Place Where You Can Get Custom Cylindrical Lens

There are certain differences that will set the Cylindrical lens apart from others. It focuses light on to a line, rather than a single point like a spherical lens. Shanghai Optics knows how to get work done right whenever possible. Cylindical lens technology is more important than ever before as well. These models have helped people decide whether they are fit for scientific study. Researchers have begun requesting these lenses more often for the lab.

Shanghai Optics is a leading supplier and knows how to play its role well. The team has amassed many ties to the research community over the years. That gives them a diverse array of clients with their own specific needs. Shanghai Optics is a proud leader and wants to help people find the right supplies. Trust the business model and what they can do to get equipment shipped soon. Shanghai Optics remains dedicated to helping customers find the right supplies.

Cylindrical lens models are in stock and ready to be sold. Look through the catalog to get an idea of what the products tend to offer. Cylindrical Lens designs are more popular than ever before for those that are interested. These concepts have appealed to researchers over the years and for a good reason. They are well designed and will fit the mold for any research objective that is needed.

The cost of cylindrical lens models may vary based on a few factors. Shanghai Optics will work to make the purchase price much more affordable. Trust their business acumen and dedication to the customer during the shopping process. Research teams will want to identify unique features of the cylindrical lens. They should also expect shipping and handling fees to apply along the way. The grand total will be displayed and customers can place the order.


How is Germanium Lens Made?

What are Germanium lenses, and how do they work? Before we drive into what germanium lens is, you must know what Germanium is in genera...