Method and system for morphology deviation correction of optical glass products

A technology of optical glass and correction method, which is applied in the direction of glass pressing, glass manufacturing equipment, glass molding, etc., can solve the problems of long correction period of shape deviation of pressed products, large correction error, etc., to reduce unstable factors, Reduce the workload and ensure the effect of accuracy

Active Publication Date: 2018-05-29
CDGM OPTICAL GLASS
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  • Abstract
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  • Application Information

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Problems solved by technology

[0008] The invention provides a method for correcting the appearance deviation of optical glass products, aiming to solve the problems of long correction period and large correction error for the appearance deviation of pressed products in the existing method

Method used

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  • Method and system for morphology deviation correction of optical glass products
  • Method and system for morphology deviation correction of optical glass products
  • Method and system for morphology deviation correction of optical glass products

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Embodiment 1

[0082] Taking an aspheric lens product with a maximum cross-sectional diameter of 48mm as an example, its surface equation is shown in formula (1), and the values ​​of the parameters in the formula are shown in Table 1. The customer's surface accuracy requirement for the product is ±25μm, as shown in Table 1. According to the parameters in 1, the mold cavity is preliminarily designed, processed and trial-manufactured, and 6 samples are randomly selected from the obtained trial products for three-coordinate testing, and 4 sets of surface data are tested for each sample, and the optical glass product morphology provided by the present invention is adopted The deviation correction system conducts a consistency analysis on the deviation data of the surface shape of the sample and the standard value, and obtains image 3 result.

[0083] Table 1 The standard formula parameter table of the aspheric lens product with a diameter of 48mm

[0084] formula parameters

C

K...

Embodiment 2

[0094] For an aspheric lens product with a maximum cross-sectional diameter of 60mm, its surface equation is shown in formula (1). The cavity of the molding die is preliminarily designed based on the parameters in the drawing, and then processed and trial-manufactured. Four of the obtained trial products are randomly selected. Three-coordinate testing is carried out on the sample, and 4 sets of surface data are tested for each sample, and the optical glass product shape deviation correction system provided by the present invention is used to analyze the consistency of the shape deviation data between the sample surface and the standard value, and the obtained Figure 6 result. from Figure 6 It can be seen from the figure that the consistency of the 16 shape deviation curves is poor, indicating that the production process parameters in the pressing process are unstable, and the conditions for correction of the shape deviation are not available. It is necessary to continue to a...

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Abstract

The invention, which belongs to the technical field of calibration of compression type products, specifically discloses a method and system for morphology deviation correction of optical glass products so that problems of long morphology deviation correction period and large correction error of the existing compression type products in the prior art can be solved. The method comprises: making a compression type die and carrying out trial-manufacturing of an optical glass product; measuring morphology deviation data of a trial-manufacturing product; analyzing consistency of all groups of morphology deviation data; determining whether all groups of morphology deviation data meet a profile precision requirement; and correcting a compression die design parameter and the like. With the method disclosed by the invention, the influences on the morphology deviation correction process by an unstable factor of the compression type production process of the optical glass products, non-uniform expansion and contraction of the compression type product profile, and wearing of the compression type die cavity are reduced effectively.

Description

technical field [0001] The invention belongs to the technical field of profiled product correction, and in particular relates to a method and system for correcting the shape deviation of optical glass products. Background technique [0002] The secondary molding process of optical glass is to prepare optical glass blanks at normal temperature into optical glass blocks of a certain size and weight. Pressurization is a method of forcibly pressing softened glass into optical glass products, which can be used to press optical glass products such as aspheric lenses. Because this method has the characteristics of high molding efficiency and good appearance consistency of the pressed product, it can be used in various optical systems with only a small amount of grinding and polishing of the pressed product. Therefore, the secondary pressing of optical glass The type has gradually become the main production and processing method of optical components such as aspheric lenses. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/20C03B11/08
CPCC03B11/082G01B21/20
Inventor 王乃帅卢世峯王建强陈伦权粟勇李文龙
Owner CDGM OPTICAL GLASS
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