Integrated multi-surface system measurement and evaluation method

Abstract

The invention belongs to the optical measurement technology field and particularly relates to an integrated multi-surface system measurement and evaluation method. The method comprises steps that firstly, surface three-dimensional coordinate data measurement of a multi-surface system under a unified coordinate framework is carried out, in combination with a multi-surface system design model, surface geometric characteristic calculation is carried out; secondly, surface geometric characteristic selection is then carried out, and optimum surface system matching is then carried out; lastly, surface system quality evaluation is carried out, including evaluation on a relative error of each surface, integral deviation, a single surface or a certain interests of surface. The method is advantaged in that multi-surface systems comprise progressive eyeglasses and free curved surface prisms, analysis evaluation on system errors and surface type errors of various complex curved surface and combined surface systems can be realized, and a series of parameter evaluations based on a thickness parameter are included.

Description

technical field [0001] The invention belongs to the technical field of optical measurement, and in particular relates to a comprehensive measurement and evaluation method of a multi-surface system. Background technique [0002] A multi-surface system refers to a surface system composed of more than one surface. For example, a commonly used optical lens is composed of a front surface, a rear surface and a side surface; a prism used in a VR / AR system consists of three working surfaces and two positioning surfaces. face composition. Such as figure 1 shown. The final functional effect of various parts formed by multi-surface systems is closely related to the quality of these surfaces and the positional relationship between each surface. For example, the performance of an optical lens is not only related to the quality of a single surface, but also the relative position of the front and back, including thickness, eccentricity, tilt, distortion (non-rotating lens), etc., will a...

AI Technical Summary

Problems solved by technology

At present, the measurement technology focuses on the measurement and quality evaluation of a single surface, including surface shape error, surface finish, etc.; although there are also optical equipment that can realize some parameters, such as lens center thickness, eccentricity and other parameters, but these The equipment is often special equipment, expensive and lacks versatility, and mainly measures a certain parameter

At present, there is still a lack of a comprehensive measurement method and technology for multi-surface systems, which can comprehensively measure and evaluate such multi-surface systems.

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