Unlock instant, AI-driven research and patent intelligence for your innovation.

Method of manufacturing multifocal lens and multifocal lens

A multi-focal lens and manufacturing method technology, applied in the direction of lenses, manufacturing tools, glass pressing, etc., can solve problems such as difficulties, complex lens surface design shapes, etc., to achieve easy design and manufacturing, good optical properties, and reduced skew or the effect of eccentricity

Inactive Publication Date: 2009-04-22
HOYA LENS MFG PHILIPPINES INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of multifocal lenses, it is more difficult due to the more complex design shape of the lens surface

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of manufacturing multifocal lens and multifocal lens
  • Method of manufacturing multifocal lens and multifocal lens
  • Method of manufacturing multifocal lens and multifocal lens

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0077] from Figure 1 to Figure 7 The first embodiment of the present invention is shown. The first embodiment is a multifocal lens 1 having a three-layer structure in one group.

[0078] exist figure 1 In the figure, the multifocal lens 1 of the first embodiment is shown. like figure 1 As shown in the cross-sectional view of (A), the multifocal lens 1 has a structure in which the yield point temperature of the laminated glass from the convex side is At 1 The first lens 11 (hereinafter, also simply referred to as "lens 11"), the glass yield point temperature is At 2 The second lens 12 (hereinafter, also simply referred to as "lens 12"), and the glass yield point temperature are At 3 The third lens 13 (hereinafter, also simply referred to as "lens 13"). Here, the above-mentioned glass yield point temperature has At 1 >At 2 >At 3 Relationship. In addition, the glass transition temperature of each of these lenses has Tg 1 >Tg 2 >Tg 3 relationship, at the same time,...

no. 2 Embodiment approach

[0109] Below, according to Figure 8 , Figure 9 A second embodiment of the present invention will be described. The second embodiment is different from the first embodiment in the number and arrangement of lenses located in the middle, and the other structures are the same as the first embodiment.

[0110] like Figure 8 As shown in (A) and (B), the multifocal lens 2 of the one-group three-layer structure according to the second embodiment is constituted by three layers of a lens 21 , a lens 22 and a lens 23 , but the lens 22 located in the middle is arranged on the offset lens 21 . , the position of the optical axis of 23. like Figure 8 As shown in (B), in this embodiment, four lenses 22 are arranged on concentric circles centered on the optical axis. However, the lenses 22 do not necessarily need to be located on the concentric circles, and the optical characteristics of the multifocal lens 2 may vary depending on the , configure any number in any position.

[0111] ...

no. 3 Embodiment approach

[0114] Below, according to Figure 10 , Figure 11 A third embodiment of the present invention will be described. The third embodiment is different from the first embodiment in the shape of the lens located in the middle, and the other structures are the same as those of the first embodiment.

[0115] exist Figure 10 In the illustrated multifocal lens 3 of the third embodiment, the lens 32 located in the middle is formed in a ring shape without a center portion. Such a multifocal lens 3 can also be manufactured in the same manner as the above-described manufacturing method.

[0116] Specifically, as Figure 11 As shown, molding starts from the first lens 31 having the highest glass yield point temperature. A concave portion 31A is formed at a portion of the first lens 31 corresponding to the arrangement position of the second lens 32 , and the posture of the lower mold 301 is controlled so that the concave portion 31A faces upward.

[0117] like Figure 11 As shown in ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a method of manufacturing multifocal lens and multifocal lens. The method can simply obtain a multifocal lens having excellent optical performance, and is a manufacturing method for a multifocal lens having one group three layers structures by using three lens materials having glass deformation point temperatures of At<1>, At<2> and At<3> and forming the lens materials by heated-die pressing process. The glass deformation point temperature has a relation of At<1>At<2>At<3>. After a first lens is formed by a first lens material with a glass deformation point temperatures At<1>, the first lens will be made as one portion of a forming module to form a second lens material with a glass deformation point temperatures At<2> to form a second lens, and the second lens is jointed to the first lens, then the first lens and the second lens are made as one portion of a form module to form a third lens material with a glass deformation point temperatures At<3> to form a third lens, and the third lens is jointed to the first lens and the second lens.

Description

technical field [0001] The present invention relates to a method for manufacturing a multifocal lens and a multifocal lens. Background technique [0002] Conventionally, lenses as optical components have been widely used in glasses, cameras, and the like. As a lens, it can be divided into a single focus lens with only one focal point and a multifocal lens with multiple focal points. [0003] As multifocal lenses, structures as described below have been proposed: Figure 35 As shown in (A), a lens A in which areas with different curvatures are formed in a part of the optical surface; as Figure 35 As shown in (B), lens B in which other lenses are bonded to a portion of the optical surface of the lens with an adhesive; or as shown in Figure 35 As shown in (C), lenses C of different materials are bonded to the peripheral portion and the central portion of the lens (for example, refer to Patent Document 1). [0004] In addition, as a method of manufacturing a laminated single ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B3/10C03B11/08
Inventor 清水章弘西浩太后藤顺孝宫泽贵则
Owner HOYA LENS MFG PHILIPPINES INC