Process Characteristics Of Precision Molding Manufacturing Technology
In many cases, optical design using aspheric surface, can obtain the optical properties of the spherical optics, such as improving the relative aperture of the system, increasing the field of view, improving the quality of the image, improving the illumination uniformity, shortening the working distance, reducing the number of lenses and so on. This simplifies the structure of the optical system and reduces weight.
Therefore, aspheric surfaces are often used in optical systems with large fields of view, large apertures, high aberration requirements, and simple structural requirements. Aspheric optical components are increasingly becoming a very important class of optical components due to their excellent optical properties.
The aspherical parts can be divided into a rotationally symmetric aspherical surface, a non-rotationally symmetric aspherical surface, a non-symmetric central aspherical surface, and an array surface. One of the most commonly used rotationally symmetric aspheric surfaces. It is a quadratic or higher-order curve that rotates around the curve’s own axis of symmetry.
The aspheric surface of the aspheric surface expresses a quadratic de-surface, and the aspheric surface is made of some minor surface deformation on the basis of the secondary de-faced surface, which can achieve the purpose of correcting the phase difference. Since an aspheric surface can have multiple quantities to choose from, the aspheric surface has a good effect compared to only one choice of the spherical surface, and an aspheric surface can have several spherical structures.
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