CN204405969U - The upper and lower progressive lens of a kind of widescreen - Google Patents

Abstract

The utility model relates to the upper and lower progressive lens of a kind of widescreen, it is characterized in that the upper and lower entire body of eyeglass is grading structure, and gradual change luminosity absolute difference is between 100-400 degree.The utility model fully takes into account correcting lens, is no matter myopia or long sight, all exists and sees near and see and far all needs different luminosity to regulate, and farsighted person can regulate problem due to eye muscle, and progressive lens is necessary; And for A nearsighted person, adopt progressive lens also can improve eye hygiene, be unlikely and see and closely see far away from same darker luminosity district, especially seeing that near region not easily produces visual fatigue, can the retarding myopia medical science of deepening be puzzled greatly, coordinate people's ocular accommodation again, finally reach the object that prevention slows down myopia development or deterioration.

Description

The upper and lower progressive lens of a kind of widescreen

Technical field:

The utility model belongs to vision correction eyeglass field, particularly the upper and lower progressive lens of a kind of widescreen.

Background technology:

Existing progressive focus-variable lens is all for presbyopic glasses, and solution need carry the trouble of many pair of glasses.Because presbyopic is eyeball degenerative problem, often along with the age increases, and the regulative mechanism of eyeball is progressively deteriorated, and the presbyopic number of degrees are generally within 300 degree.But namely teen-age myopia be cause with eye is improper, especially see and the result that nearly thing fatigue causes make to see, need wear glasses to correct far unintelligible.And at present myopia join mirror optometry be by see far clear for the purpose of, also namely ensureing that attending class looks at the blackboard can know for wanting, and between using in a large number at the moment, namely be closely look thing, as done one's assignment, reading a book, play mobile phone and operating computer etc., if still use the glasses of attending class, after the some time, as reduced vision caused again after halves, again wear darker glasses again.Trace it to its cause, be namely that less than 18 years old eyeball is in growth, automatically can adapt to see dipped beam degree.How to utilize the principle of gradual change presbyopic glasses, design a kind of have see far away, see eyeglass that is near and that take a fancy to apart from upper and lower gradual change, namely become the object of the utility model research.

Summary of the invention:

The purpose of this utility model is the upper and lower progressive lens of widescreen of a kind of upper and lower entire body luminosity of design gradual change.

Technical solutions of the utility model are achieved in that the upper and lower progressive lens of a kind of widescreen, it is characterized in that: the upper and lower entire body of eyeglass is grading structure, and gradual change luminosity absolute difference is between 100-400 degree.For A nearsighted person, dark bottom, eyeglass top is shallow, is accustomed to eye by people, sees that far field is located at top, and when often seeing far away, eyeball is the up luminosity naturally utilizing top darker, as watched the writing on the blackboard of blackboard; Taking a fancy to and be generally look squarely apart from district, as seen TV etc., the moderate luminosity district viewing in the middle of eyeglass can be utilized; Read a book and do the homework, the naturally descending action of eyeball, just utilizes the luminosity that bottom is more shallow, observes nearly thing, avoids watching nearly thing for a long time with darker luminosity, causes the problem of myopia development; And for farsighted person, eyeglass top can from close to zero diopter, increasing degree gradually downwards, namely see far without the need to correcting, namely see closely needs to correct, and takes a fancy to have apart from district and suitably correct.

The light varience of described gradual change, is located on the male bend face of casting mirror, keeps recessed bent face complete, to process astigmatism.

The utility model fully takes into account correcting lens, is no matter myopia or long sight, all exists and sees near and see and far all needs different luminosity to regulate, and farsighted person can regulate problem due to eye muscle, and progressive lens is necessary; And for A nearsighted person, adopt progressive lens also can improve eye hygiene, be unlikely and see and closely see far away from same darker luminosity district, especially seeing that near region not easily produces visual fatigue, can the retarding myopia medical science of deepening be puzzled greatly, coordinate people's ocular accommodation again, finally reach prevention and slow down myopia development or deterioration, and reduce the object of eye fatigue.

Accompanying drawing illustrates:

Below in conjunction with concrete legend, the utility model is described further:

Fig. 1 eyeglass gradual change schematic diagram

Fig. 2 myopia entire body grading profile schematic diagram

Fig. 3 long sight entire body grading profile schematic diagram

Wherein

1-eyeglass, 2-effective range, 3-male bend face

Embodiment:

With reference to Fig. 1, the upper and lower progressive lens of widescreen, when eyeglass 1 is shaping, outline is circular, and cut into the moulding coincide with picture frame during assembling, final outline is class rectangular configuration, ensures the larger visual field.The utility model, by this plastic range, is referred to as effective range 2, and eyeglass about 1 entire body is grading structure, precisely refers to the gradual change of effective range 2 entire body, and gradual change luminosity absolute difference is between 100-400 degree; The light varience of gradual change, is located on the male bend face 3 of casting mirror, keeps recessed bent face complete, to process astigmatism.

With reference to Fig. 2, for near-sighted entire body progressive lens, in figure, dotted outline is the moulding in the male bend face 3 of normal eyeglass, solid line is entire body progressive lens, namely also eyeglass cuts into the coincide effective range 2 of moulding of picture frame is the gradual change of entire body luminosity, and luminosity gradual change is located at male bend face 3, object abdicates the need of recessed bent face for processing astigmatism; At this, do not get rid of when making without astigmatism correction eyeglass, the gradual change of entire body luminosity is located on concave change face, still protects by the utility model.Because near-sighted luminosity number is often very high, as-1200 degree, when joining mirror, keep longitudinal the top of eyeglass effective range 2 to be-1200 degree, gradual change of successively decreasing successively downwards, be-800 degree to bottom, its gradual change luminosity absolute difference is 400 degree; If myopia degree is-500 degree, can the top be-500 degree, bottom be the gradual change of-250 to-300 degree, and gradual change luminosity absolute difference is between 250 to 200; To the myopia compared with low powered posterior chamber, as-300 degree, the top-300 is spent, and bottom-200 is spent, the luminosity absolute difference of entire body gradual change 100 degree.

Eye test new opinion, teenager, student's optometry not only will be examined far, and reinforcement optometry sees near luminosity, in order to making upper and lower luminosity difference between 100 degree to 400 degree, eyesight can not make eyeball for a long time seeing luminosity far away at present, and automatic function is adjusted to sees near vision.This point, in conjunction with the opinion of the upper and lower entire body progressive lens of the utility model, reduces eyes eye because of the too dark tired phenomenon of luminosity, can reach the problem slowing down myopia development.

With reference to Fig. 3, be long sight entire body progressive lens, in figure, dotted outline is the moulding of normal eyeglass, and solid line is entire body progressive lens.Distance vision correction luminosity number is not high, and generally can not exceed+500 degree, for this reason, gradual change luminosity absolute difference is between 100 to 300; And often see that far field can be zero diopter, be also eyeglass the top zero diopter, bottom gets actual rectification luminosity number, and its entire body gradual change luminosity absolute difference is the distance vision correction number of degrees.

Claims (2)

1. the upper and lower progressive lens of widescreen, is characterized in that: the upper and lower entire body of eyeglass is grading structure, and gradual change luminosity absolute difference is between 100-400 degree.

2. the upper and lower progressive lens of a kind of widescreen according to claim 1, is characterized in that: the light varience of gradual change, is located on the male bend face of casting mirror, keeps recessed bent face complete.