CN2474110Y

CN2474110Y - Composite optical eyeglasses with synchronous regulation and collecting

Info

Publication number: CN2474110Y
Application number: CN 01212827
Authority: CN
Inventors: 陈祖惠
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-20
Filing date: 2001-03-20
Publication date: 2002-01-30
Anticipated expiration: 2011-03-20

Abstract

The utility model provides a composite optical glasses structure with synchronous adjustment and aggregation, made from a convex glass which refraction is from +0.8 to +2.0D and a lens which lens degree is from 2delta to 7delta. The convex glass can reduce the adjustment degree in near sight, and the lens can reduce the aggregation angle in near sight, thereby simulating the far sight state from via adjustment and aggregation, to prevent near sight by emmetropia user.

Description

Regulate the complex optics glasses synchronous with set

This utility model relates to a kind of glasses, the complex optics glasses that especially a kind of adjusting is synchronous with set.

China is at the eighties " near fogging method " once in vogue, this method is to see when near, wear+eyeglass of 1.5D, make the light that sends by near objects, reduce by the degree of scattering behind the convex lens, cause and seeing that simulation when near sees that state far away can make the adjusting number of degrees of seeing when near reduce, and is used for preventing and treating pseudomyopia.But " near fogging method " is used for the pre-myopia prevention of emmetropia, then has distinct disadvantage.According to " the East Germany's that line " (see figure 1) that meets vision physiological, the adjusting of eyes and the variation of set are synchronous, and " near fogging method " exactly destroyed original this normal relation.For example: when people's eye fixation 33cm place (Fig. 2 left side), required being adjusted to+3.0D, required set also is 3ma, meet " East Germany's that line " this moment, when put on+when the 1.5D lens are watched the 33cm place attentively (Fig. 2 the right), regulate and reduce to+1.5D by required+3.0D, and set still is 3ma, deviated from " East Germany you line " this moment, and Here it is, and people look generally feels the major reason of " dizzy eye rises " when time wearing protruding visor.

The purpose of this utility model provides a kind of for the pre-myopia prevention of emmetropia, reduces dizzy the sensation that rises when wearing mirror, reduces eyestrain during reading and writing, improves the adjusting complex optics glasses synchronous with set of pre-myopia prevention effect.

The structure of this complex optics glasses is: by diopter+0.8～+ convex lens between the 2.0D and prism degree be 2 ^△～7 ^△Between compound the making of prism.

The complex optics glasses that adjusting of the present utility model is synchronous with set are mainly used in about 33cm and closely read, write, for the pre-myopia prevention of emmetropia.It is prevented and treated myopia with " near fogging method " and compares and have following advantage: since regulate with set synchronously, the sensation of " dizzy eye rises " has reduced when wearing convex lens; Still the angle of gathering from the angle of regulating has all caused the simulation of seeing when near to see state far away; When reducing to see adjusting power required when near, also reduced to see convergence power required when near; More than effect makes the eyes reading, reduces fatigue when writing, and has therefore improved the preventive effect to myopia.

Elaborate below in conjunction with accompanying drawing.

" the East Germany's that line " that Fig. 1 changes synchronously for adjusting and set.

Fig. 2 is convex lens and the asynchronous schematic diagram of set.

Fig. 3 regulates and set synchronization principles figure for this utility model.

Fig. 4 is this utility model Glasses structure sketch map.

This complex optics glasses have been taked convex lens and prism way of combining, when the diopter of convex lens is 1/f (f: focal length, the m of unit), the prismatical prism degree compound with it is PD/2f (PD: interpupillary distance, the cm of unit), the diopter of convex lens is selected in+0.8D～2.0D between, the scope of interpupillary distance is set between 5～7cm, adapt with interpupillary distance, prism degree needs 2 ^△～7 ^△Between.

The installation of eyeglass is that prismatical drift angle is outside, the bottom surface is inside, make the mirror-symmetrical (see figure 3), convex lens makes sees that degree of regulation required when near reduces, prism makes sees that required angle of convergence reduces when near, when the glasses wearer of different interpupillary distances wore glasses suitable in the optical glasses series and sees 33cm place, the degree that its degree of regulation reduces all caused mutually with the degree that angle of convergence reduces, and makes the adjusting of eye and the variation of set meet " East Germany's that line " all the time.

As shown in Figure 4: interpupillary distance is that the people of 60mm wears one pair of diopter and is+1.0D, and prism degree is 3 ^△Optical glasses see 33cm place (Fig. 4 left side), required adjusting is reduced to+2.0D by+3.0D, set is reduced to 2ma by 3ma; If the optical glasses numerical value of wearing is diopter+2.0D, prism degree 6 ^△(Fig. 4 the right), then required adjusting is reduced to+1.0D, and 1ma is reduced in set; Regulate with the variation of set and conform to " East Germany's that line " all the time.

Claims

1, a kind ofly regulate the complex optics glasses synchronous, comprise eyeglass and mirror holder, it is characterized in that with set: by diopter+0.8～+ convex lens between the 2.0D and prism degree be 2 ^△～7 ^△Between compound the making of prism.