Micro lenses are small lenses, generally with diameters less than a millimetre (mm) and often as small as 10 micrometres (μm). The small sizes of the lenses mean that a simple design can give good Optical quality but sometimes unwanted effects arise due to Optical diffraction at the small features.

Aspheric lenses are any lenses whose surface angles and profiles are neither part of a sphere nor part of a cylinder. Conventional or non-aspheric lenses have the same curve across their entire surface, like a ping-pong ball. Aspheric lenses accomplish the same amount of refraction but are flatter and slimmer. Aspheric lenses are commonly used in photography, as well as in eyeglasses and contact lenses. In the context of photography, the complex surface profiles of aspheric lenses can eliminate the distortion of certain types of lines, when compared to a conventional Lens. A single aspheric Lens sometimes has the ability to take the place of a more complex system of multiple lenses. This allows Lens systems to be smaller and lighter, in addition to sometimes costing less.

COT provides prisms with various type and cemented prisms. The precision achieved 2" for 90° and 10" for 45°angle. Customers could have versatility for different type prism choices with various coating from our ultimate service.

1. COT developed many Optical components in infra ray and ultra violate wavelength range including: Silica, Silicon, Germanium, Sapphire, CaF2, MgF2, ZnS, ZnSe, etc. 2. Though those materials often owned extremely high or low hardness coefficient, many material fabrication precision had been obvious improved by new machines recent years. COT changed traditional process methods and solved the problems for IR and UV material fabrication accuracy and precision. Therefore, COT raised IR and UV Lens fabrication specification highly.

Cylindrical lenses have at least one surface that is formed like a portion of a cylinder. Cylindrical lenses are used to correct astigmatism in the eye, and, in rangefinders, to produce astigmatism, stretching a point of light into a line. Some styles of cylindrical lenses have antireflective coatings to increase the transmission of light through the Lens. Cylindrical lenses are available in either plano-concave or plano-convex configurations. Plano-concave lenses have a negative focal length and are used for image reduction or to spread light. Plano-convex lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications.

Ball lenses are highly polished spheres made of optically transparent homogeneous materials. Ball Lenses are commonly used for laser collimating and focusing, laser-to-fiber coupling, fiber-to-fiber coupling, and fiber-to-detector coupling. Larger spheres are easier to handle and ease the sensitivity of translational alignment. However, smaller sphere has the benefit of fitting into smaller packages.

Specialized factory for assorted glass Optical concave/convex Lens, converging Lens, magnifier Lens, telescope Lens, cnc/nc precision Optical Lens cutting, round/irregular, extra-mini cutting, uv/ir multi-coated Lens.

A Lens having two spherically curved faces, one convex and the other concave, so that it has the form of a shell. A positive meniscus Lens is thicker in the middle than at the edges and serves as a converging Lens; a negative meniscus Lens thickens toward the edges and works as a diverging Lens. Very large telescopes may use meniscus mirrors, which are lightweight and require an active control system to retain their shape against gravity.

We specialized in the production of various convex/concave Lens of Optical glass, magnifying glass, telescope Lens, spotlight Lens, and Optical coating products, such as Optical components for projecting camera, traditional camera, digital camera, photography equipment, mobile phone, bar code machine l and monitoring device. Meantime, we have many sets pricise CNC glass cutter, we can cut glass for you(including round, special-shaped and special small size), the precision can be +/-0.05.

COT provides prisms with various type and cemented prisms. The precision achieved 2" for 90° and 10" for 45° angle. Customers could have versatility for different type prism choices with various coating from our ultimate service.