1/1.8’’ machine vision lenses are a series of C mount lens made for 1/1.8’’ sensor. They come in a variety of focal length such as 6mm, 8mm, 12mm, 16mm,25mm, 35mm, 50mm, and 75mm. Optical lens is one of the main components for machine vison system. Machine vision systems are a set of integrated components that are designed to use information extracted from digital images to automatically guide manufacturing and production operations such as quality control processes. The lens selection will establish the field of view, which is the two-dimensional area over which observations can be made. The lens also will determine the depth of focus and the focal point, both of which will relate to the ability to observe features on the parts being processed by the system. Lenses may be interchangeable or may be fixed as part of some designs that use a smart camera for the optical system. Lenses that have a longer focal length will provide higher magnification of the image but will reduce the field of view. The selection of the lens or optical system for use is dependent on the specific function being performed by the machine vision system and by the dimensions of the feature under observation. Color recognition capability is another characteristic of the optical system element. The applications for machine vision lens are widespread and cross many types of industries, such as automotive manufacturing, electronics, food and packaging, general manufacturing, and semiconductors.