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Aspheric lens manufacturing method

A technology of aspheric lens and manufacturing method, which is applied in the direction of lens, manufacturing tools, glass pressing, etc., and can solve problems such as difficult high-precision molding, long working time, and strict molding conditions

Inactive Publication Date: 2011-10-12
KONICA MINOLTA OPTO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This compression molding method can mold one side of the lens in a short time, but the molding conditions are very strict, and it is not easy to mold both sides with high precision.
[0004] Machining can be processed with high precision. However, since it is necessary to use expensive and high-precision special working machines, and it takes a long time to perform grinding, etc., the required working time is longer than that of molding processing, which has disadvantages.

Method used

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Embodiment Construction

[0034] Embodiments of the method for manufacturing an aspheric lens according to the present invention will be described below with reference to the drawings. Here, the present invention will be described based on the illustrated embodiment, but the present invention is not limited to this embodiment.

[0035] The method for manufacturing an aspheric lens according to an embodiment of the present invention is to mold a glass material first, and simultaneously form an aspherical surface, a flat surface around the aspheric surface, and a side surface connected to the flat surface to form a glass molded body (molding process). Next, the glass molded body is loaded into a processed mirror frame that touches the flat surface and the side surface of the glass molded body formed in the molding process to support and position the glass molded body (loading process). Then, by machining, a predetermined surface shape is formed on the other side of the molded glass body (machining proces...

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Abstract

Provided is an aspheric lens manufacturing method by which an aspheric lens having a desired shape can be manufactured with high accuracy regardless of the shape of a glass compact without reducing productivity. The aspheric lens manufacturing method for forming the aspheric lens by pressing and machining a glass material, comprises a pressing step for pressing the glass material to thereby form the aspheric surface, the flat surface of the peripheral edge of the aspheric surface, and the side surface continuous to the flat surface at the same time and form the glass compact, a mounting step for mounting the glass compact in a work holder which holds and positions the glass compact by being in contact with the flat surface and the side surface of the glass compact formed in the pressing step, and a machining step for machining the other surface of the glass compact mounted in the work holder in the mounting step to thereby form the other surface into a predetermined surface shape.

Description

technical field [0001] The present invention relates to a method for manufacturing an aspheric lens, and more particularly to a method for manufacturing an aspheric lens using molding and machining. Background technique [0002] In recent years, aspherical lenses have been used in a wide range of applications, such as lenses for digital cameras, optical pickup lenses for DVDs, camera lenses for mobile phones, coupling lenses for optical communication, and various mirrors. As a method for producing such an aspheric lens, press processing, machining (a generic term for cutting, grinding, and grinding) and the like are known. [0003] Compression molding is a processing method in which a heated and softened glass material is molded with an upper mold and a lower mold. This compression molding method can mold one side of a lens in a short time, but the molding conditions are very strict, and it is not easy to mold both sides with high precision. [0004] On the other hand, mac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00C03B11/08
CPCB24B13/0052C03B2215/49C03B2215/72G02B3/04
Inventor 富阪俊也胁田耕一
Owner KONICA MINOLTA OPTO
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