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Edmund Optics® has been a leading supplier of optics, imaging products and optical components to industry since 1942, designing and manufacturing a wide array ...

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While DLC can be used as a Anti-reflective coating, BBAR coatings still have better performances on IR optics than sole DLC layer. It is therefore recommended for better performance to have a DLC layer on one side and AR coating on the other side.

Download scientific diagram | 1951-USAF resolution test target imaged with 75 mm focal length lens at 1000 lx illumination. The target is set to simulate a ...

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DLC stands for Diamond Like Carbon, it is a black/ dark grey thin layer of amorphous carbon that can be coated on different surfaces. DLC coatings can be used in different industries, but we will focus on DLC coatings for optical components.

As the term suggests, this is the closest that the lens can be and still achieve focus on that subject. Any closer and the lens cannot achieve focus, either ...

Convex lenses bulge out in the middle like lentils, while concave lenses "cave in" in the middle and bulge out at the edges. How do lenses work? A lens works ...

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Definition. Horus is an ancient Egyptian deity, often depicted as a falcon or as a man with the head of a falcon. He represents the sky, kingship, ...

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Diamond Like Carbon coating can be applied directly on Germanium and Silicon substrats and can also be use with additional intermediary layer with chalcogenide glass, ZnSe and ZnS substrates.

Windblown dust, sea salts, volcanic ash, smoke from wildfires, and pollution from factories are all examples of aerosols. Depending upon their size, type, and ...

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When dealing with infrared optics, especially in defense industry one cannot avoid hearing about DLC coatings. But what are they ? Why are they used ?

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It is interesting to note that germanium has an average transmission in the 8-12µm range of less than 50%, the addition of AR or DLC coatings increase this value to more that 90%.

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Image sensors are a solid-state device and serve as one of the most important components inside a machine vision camera. Every year new varieties of sensors are ...

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The use of vacuum chamber creates a clean environment and then reduce the risk of impurities in the coating layer.  The plasma is created by ionizing a gas pumped in the chamber. For DLC coating the gas is either methane (CH4) or acetylene (C2H2) both very rich in carbon atoms. Du to the process, complex shapes can be coated with very good homogeneity, DLC coating is not limited to flat surfaces.

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Most of the DLC application are made with either PEPVD  (Plasma Enhanced Physical Vacuum Deposition) or PECVD (Plasma Enhanced Chemical Vacuum Deposition). These process consist of a plasma being created in a vacuum chamber where the substrat has been positioned on a substrate holder that serve as an electrode, the contact between the plasma and the substrate leads to the creation of a coating layer.

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DLC coating is relatively expensive it’s application is therefore limited to the front face of the optic, the one that will be in contact with the external environment.

202235 — For convex lenses, different focal lengths can have drastically different images. If an object (u) is at a distance greater than two times its ...

Allied Vision

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Allied Vision is one of the world’s leading camera manufacturers in the machine vision market. It understands customers’ needs, and focusing on what counts is the practice that has helped them find success. Supplying camera technology and image capture solutions for industrial inspection, medical and scientific imaging, and traffic monitoring are some of the many application areas within Allied’s focus. It has nine locations and a network of sales partners in over 30 countries to help customers reach their imaging goals.

Plasma Enhanced technology is used instead of normal CVD/PVD method as it’s working temperature is much lower (around 250° vs 600-900°C) which protects temperature sensitive substrates like Germanium. The growth rate of the coating layer is constant, it is then easy to monitor layer thickness by controlling the time of reaction. Typical thickness of DLC coating is 1.2µm, but may vary according to the substrate material.

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