A kind of aspheric paperweight magnifying glass and preparation method thereof

Abstract

The invention belongs to an aspherical paperweight magnifying glass and a preparation method thereof; it comprises an aspherical magnifying glass lens and a metal ferrule arranged outside the aspherical magnifying glass lens, the outer diameter of the aspherical magnifying glass lens is equal to the inner diameter of the metal ferrule; The utility model has the advantages of simple structure, reasonable design, firmness and reliability, beautiful appearance, large file magnification, no deformation of the enlarged text or image, large observation range and suitable for use as a paperweight.

Description

technical field [0001] The invention belongs to the technical field of paperweight magnifiers, and in particular relates to an aspheric paperweight magnifier and a preparation method thereof. Background technique [0002] The existing magnifying glass and paperweight are made separately. When using the magnifying glass alone, when you need to observe wrinkled or curled documents, you generally hold the magnifying glass with the other to smooth the document, and you cannot do other things during observation, such as recording, etc. ; When using the magnifying glass and paperweight at the same time, it needs to be taken and managed separately, which adds some troubles in details; in recent years, a paperweight magnifying glass has appeared on the market, but it was not recognized by consumers after entering the market. There are mainly the following defects: 1. Light weight, unable to play the role of paperweight; 2. The magnification of the document is low; 3. The enlarged te...

AI Technical Summary

Problems solved by technology

[0002] Existing magnifying glasses and paperweights are made separately. When using a magnifying glass alone, when it is necessary to observe wrinkled or curled documents, it is generally necessary to hold the magnifying glass in one hand and smooth the document with the other hand. You cannot do other things during observation, such as recording, etc. ; and when using a magnifying glass and a paperweight at the same time, they need to be taken and managed separately, which adds some troubles in details; in recent years, a paperweight magnifying glass has appeared on the market, but it has not been recognized by consumers after entering the market. There are mainly the following defects: 1. Light weight, unable to play the role of paperweight; 2. The magnification ratio of the document is low; 3. The enlarged text or image is deformed and causes the problem of inconvenient observation and small observation range; 4. The structure is complex , The appearance is rough, and the magnifying glass is easy to fall off from the installation frame

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