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Knight Optical can offer Circular Sheet Polariser for use within Photographic Applications. We supply a range of Circular Sheet Polariser for a range of applications. All individually QA checked and metrology tested for quality to ensure parts meet customer specification. Supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications. Knight Optical supply precision optical components to customers within Photographic Applications. Our Circular Polarisers consist of a quarter wave plate cemented to a linear polariser. While a linear polariser may be used to reduce glare during photography (such as reflection from the surface of a body of water), autofocus systems struggle to correctly focus on linearly polarised light. With the addition of the quarter wave plate, this has little impact on the intensity of incident light to the sensor, but it makes autofocussing much easier. For more information read PDF… Shapes: :Circular Polarisers, Square Polarisers Dimensional Tolerances::+/- 0.5mm

In the medical field, the use of metal processing products demands higher standards for hygienic surfaces, corrosion resistance, mechanical strength, and ease of maintenance, primarily utilizing materials such as stainless steel. CTT typically employs common dies and fixtures to fabricate metal parts from very thin sheet metal, necessitating stringent tolerances and machining precision. CTT employs multiple processes to ensure product quality. From design development, blank processing, pre-bending processing, bending processing, welding processing, to surface treatments such as gold plating or painting, each step requires strict control. CTT offers a comprehensive suite of precision machining services, including high-precision laser cutting technology, CNC bending equipment, specialized die drawing techniques, and high-quality welding equipment. The company also enhances the aesthetic appeal and tactile quality of products through processes like wire drawing and polishing.

Knight Optical offer a range of Stock Polarisers that can be used in the study of insect vision. Insects exhibit sensitivity to linear polarised light. Insects polarise light in their vision for a number of reasons such as reducing glare and to increase contrast. This is also widespread practice in most modern cameras to help ensure the resulting image is as sharp as possible. Additionally, recently the study of insect vision has allowed researchers to modify camera systems incorporated in aerial drones to help fly independently through dense forests by assessing light intensity to avoid other objects. Knight Optical works with many leading research institutions in the field of insect vision. Knight Optical also keep stock a UV and NIR range of sheet polarisers. In particular our HNP’B replacement UV polariser which has excellent performance from 250-750nm is utilised heavily within the research of arthropod vision. Read PDF for more information Material::HNP’B Replacement Diameter Tolerance::+0.0/-0.25mm Axis direction: :±2°

We can offer both linear sheet and circular polarizers to suit your needs - Knight Optical offer a complete range of Stock Polarisers for a range of applications that could be used for Head-mounted Displays. Our stock polarisers cover wavebands <0.2 to >2µm, we can also supply custom polariser options made to your complete custom specifications. A head-mounted display (abbreviated to HMD), is a display device worn on the head or part of a helmet that has a small display optic in front of one (monocular HMD) or both eyes (binocular HMD) and can be used in applications within gaming, aviation, engineering and medicine. There are also optical head-mounted display (OHMD) which is a wearable display that can reflect projected images and allows a user to see through it (often used in conjunction with a Beamsplitters). READ PDF FOR MORE INFORMATION Material::N-BK7 or Equivalent Diameter Tolerance::+0.0/-0.25mm Length/Width Tolerance::±0.5mm (<100mm) ±1mm (100-400mm), nominal (>400mm) Axis direction: :±2°

Material selection: The selection of high-quality AL6061-T651 aluminum alloy as raw materials, which has good processing properties and mechanical properties. Round rod processing: The aluminum alloy round rod material is placed on the lathe for processing, and through the lathe processing, it forms the desired shape and size. CNC four-axis machining: After the round rod machining, the aluminum alloy round rod is further machined using the CNC four-axis machining center to precisely control the size and shape. Smooth surface: The surface of the processed aluminum alloy round rod is smoothed to obtain a smooth and flat surface and improve the appearance quality. Anodizing: the natural anodizing treatment increases the corrosion resistance and surface hardness of the product, while maintaining the natural color of the aluminum alloy. Accuracy requirements: Ensure that the flatness of the product is within 0.