CN103941420A - Far-sighted composite out-of-focus lens - Google Patents
Far-sighted composite out-of-focus lens Download PDFInfo
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- CN103941420A CN103941420A CN201410136679.7A CN201410136679A CN103941420A CN 103941420 A CN103941420 A CN 103941420A CN 201410136679 A CN201410136679 A CN 201410136679A CN 103941420 A CN103941420 A CN 103941420A
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Abstract
The invention discloses a far-sighted composite out-of-focus lens. The far-sighted composite out-of-focus lens is formed by combining a triple prism with an out-of-focus lens body which is formed by combining a plurality of lenses with unequal radiuses or dioptre in the shape of concentric circles, the dioptre of the combined lenses is gradually increased from inside to outside and the lenses with the same dioptre are annularly distributed, and the far-sighted composite out-of-focus lens can also be combined with a cylinder lens. The far-sighted composite out-of-focus lens meets the glancing habit of human eyes, covers the central visual view, has enough peripheral definition, realizes the relative uniformity between form-deprivation reduction and paracentral out-of-focus degree reduction, relaxes the proximal regulation and convergence of human eyes, weakens image jumping interference, can prevent teenagers with normal vision from myopia during short sight, is suitable for restorative treatment on teenagers with ametropia already and control on the degree deepening, is theoretically applicable to the dioptric condition of any human eyes, and has a wide application range and obvious effects.
Description
Technical field
The present invention far sees that compound out of focus eyeglass relates to the myopia of prevention and control eyes, the field of the generation of long sight development.
Background technology
" catchy title top news report in 02Yue04,2010 08:06 People's Net, " China's myopia number is nearly 400,000,000, and ' little glasses ' are more and more! A few days ago, control child myopia investigation according to China, the U.S., Australian cooperation development shows, China's myopia number is nearly 400,000,000, ranks first in the world, myopia incidence has reached 1.5 times of world average level, and adolescent myopia incidence is especially up to 50% to 60%.Myopia number is year after year soaring, has become the major issue that affects China's people ' s health."---brainstrust is referred to as myopia " state is sick " on ophthalmology Symposium Held repeatedly!
We each student starts to go to school anti-nearly knowledge such as " writing posture are very important, and hand is from the whole one-inch of nib, and chest is from table along there being a fist, and book one chi of having hallucinations is far away, and the good-looking health of posture is strong " from kindergarten.Why is that after also having so many " little glasses " generation and age more and more less so for many years? we are how prevention and control myopia on earth?
In the former students of nation myopic eye preventing and treating group leader Xu Guang of working group chief editor's < < ophthalmology dioptrics > >, explicitly point out: the environmental factors such as myopia exercise are for causing bathomorphic main cause.Therefore, preventing and treating myopia should see nearly thing or prevent from excessively regulating and setting about from improving student's academic environment and minimizing.
The eighties in 20th century, " lower degree convex lens additional substrate mutually in prism control myopia " the experiment proved that it is pre-myopic-preventing Perfected process at that time, obtained good near-sighted control effect.
In the ophthalmology conference of the Shi Sijie world, health ministry myopia key lab expert report shows, it is very large to bathomorphic generation influence on development that eyeball macula retinae periphery is that paracentric out of focus degree is considered to, myopia is because the feature of eyeball shape, see the nearly other central distance vision out of focus that easily produces, this other central distance vision out of focus form easily causes again myopic degree further to be deepened, and control near-sighted generation development and will be intervened and be reduced artificially other central distance vision out of focus by optics.
Certainly also will strengthen physical exercise particularly the aspect such as outdoor exercise and control use electronic product is multi-pronged simultaneously, and each participant such as head of a family student all will be made joint efforts.
Present myopia mainly still wears glasses to correct.And at present ophthalmic lens design in society is all that whole eyeglass is the same number of degrees, reduce the effect of other central distance vision out of focus, can not control near-sighted development in theory.
Summary of the invention
The present invention far sees compound out of focus eyeglass is that a kind of being mainly used to of making under above-mentioned technical background has to become to see to be closely the virtual compound out of focus eyeglass of seeing far and reducing other central distance vision out of focus function in prevention and control development of myopia, three through transports that meet eyeball are moving, it is characterized in that this eyeglass is composited by out of focus eyeglass and prism, out of focus eyeglass is composited by concentric circles by a plurality of radiuses or diopter lens not etc., the diopter of the out of focus eyeglass after synthetic is sort ascending from inside to outside, and identical dioptric lens are circular distribution.
The centre of out of focus eyeglass can be circular cavity or circular eyeglass according to actual conditions, eyeglass is according to the actual refraction ability of user's eyes and the sighting distance (distance of sighting target thing and eyes, lower with) long-rangely determine diopter, generally when sighting distance be less than far point apart from time be positive lens during just for the intensification of pre-myopia prevention or prevention and control myopia, if sighting distance is greater than far point distance, eyeglass is that foot is rectified ametropic negative lens, when sighting distance equal far point apart from time out of focus center of lens position can be cavity, the center of circle or goggles.
According to the actual conditions of user's eyes, the difference of the diopter of the adjacent concave-sphere of out of focus eyeglass can be equal difference and also can be not equal difference, and prevention and control myopia and control long sight are the positive negative difference of the difference of diopter.
The difference of the diopter of out of focus center of lens position and outermost layer annular lens is that total diopter recruitment also will be determined according to user's actual refraction situation, is generally 1.50D.
Prism need to be determined refracting power and direction according to the actual collective ability of user's eyes and sighting distance long-range, generally when sighting distance be less than far point apart from time, prism is that substrate is inside.
For avoiding, because jumping, disturbs by the picture that same eyeglass different parts diopter difference causes, the difference of the diopter of adjacent concave-sphere is as much as possible little, namely requiring the diopter of out of focus eyeglass to increase progressively number of times is that number of rings is many as much as possible, but this restricted manufacturing technology on eyeglass.
If user has astigmatism to exist, all right combined column mirror of out of focus eyeglass, in the hope of better visual experience.
The present invention far sees that compound out of focus eyeglass meets people's saccade custom, cover central field of vision, there are enough periphery sharpness, not only accomplish that form deprivation minimizing and other center out of focus degree reduce relatively uniform, also loosen human eye and look adjusting and set when near, three through transports that meet eyeball are moving, pre-myopic-preventing generation in the time of can not only being applicable to twenty-twenty vision teenager and looking early work industry, and the intensification that can be suitable for there has been ametropic restorative treatment and control its degree, the refractive state of applicable anyone eyes in theory, applied widely, successful.
Accompanying drawing explanation
Fig. 1 is the eyeglass cross section simplified schematic diagram of a certain embodiment of the present invention, represent that this eyeglass has increased progressively 6 times by equal difference in central refractive power, Fig. 2 is the application sketch of the present invention under the situation that is less than far point distance when sighting distance, and Fig. 3 is that the present invention is at the application sketch in the situation that sighting distance is greater than far point distance.
The centre of 1 compound out of focus eyeglass
2,3,4,5,6,7 compound out of focus eyeglasses circular lens from inside to outside
Δ CDE prism
PR ' far point distance
Distance between PR sighting distance sighting target thing and eyes
A, B eyeball
Embodiment
Below in conjunction with accompanying drawing, briefly set forth the structure that the present invention far sees compound out of focus eyeglass, but do not do enforcement of the present invention restriction, all possess to control other center out of focus and loosen simultaneously regulate with the ophthalmic lens design of consolidation function all at the row of the present invention's protection.
Generally believe at present, the diopter of the circular concave-sphere of out of focus eyeglass outermost layer increases 1.5D on dioptric basis, centre can reach the object that reduces other central distance vision out of focus.
Embodiment mono-, user is emmetropia, interpupillary distance is 60mm, the sighting target of 50cm before fixating eye, the centre diopter of wearing in theory eyeglass is+2.00DS, circular lens around increase progressively 6 times with the equal difference of+0.25D, lens 2, 3, 4, 5, 6, be respectively+2.25D of 7 diopter, + 2.50D, + 2.75D, + 3.00D, + 3.25D, + 3.50D, the difference of the diopter in the circular lens of outermost layer and centre is 1.50D, the inside prism of compound 6 prism degree substrates just can reach to loosen completely simultaneously and regulates with set and reduce other central distance vision out of focus, the object that pre-myopia prevention occurs,
Embodiment bis-, eyes of user is the myopia of 1.50D, before fixating eye during the target of 100cm, speed of development for prevention and control myopia, the centre diopter of theoretic out of focus eyeglass is-0.50DS, peripheral circles shape lens increase progressively 6 times with the equal difference of+0.25D, circular lens 2, 3, 4, 5, 6, be respectively-0.25D of 7 diopter, 0D, 0.25D, + 0.50D, 0.75D, 1.00D, the difference of the diopter in the circular lens of outermost layer and centre is 1.50D, separately will according to the parameters such as actual collective ability of user's eyes determine be added with the refractive power of prism and substrate towards.
Concrete joins the front detection method of mirror and process and joins mirror parameter and omit at this.
Claims (5)
1. far see compound out of focus eyeglass for one kind, it is characterized in that this eyeglass is composited by out of focus eyeglass and prism, out of focus eyeglass is composited by concentric circles by a plurality of radiuses or diopter lens not etc., the diopter of the out of focus eyeglass after synthetic is sort ascending from inside to outside, and identical dioptric lens are circular distribution.
2. according to claimed in claim 1, far see compound out of focus eyeglass, it is characterized in that the centre of out of focus eyeglass can be circular cavity or circular eyeglass.
3. according to claimed in claim 1, far see compound out of focus eyeglass, the difference of diopter that it is characterized in that the adjacent lens of out of focus eyeglass can be equal difference and also can be not equal difference.
4. according to claimed in claim 1, far see compound out of focus eyeglass, it is that number of rings is many as much as possible that the diopter that it is characterized in that out of focus eyeglass increases progressively number of times, and the difference of the diopter of adjacent lens is as much as possible little.
5. according to claimed in claim 1, far see compound out of focus eyeglass, its feature can also combined column mirror at out of focus eyeglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410136679.7A CN103941420A (en) | 2014-04-08 | 2014-04-08 | Far-sighted composite out-of-focus lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410136679.7A CN103941420A (en) | 2014-04-08 | 2014-04-08 | Far-sighted composite out-of-focus lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103941420A true CN103941420A (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410136679.7A Pending CN103941420A (en) | 2014-04-08 | 2014-04-08 | Far-sighted composite out-of-focus lens |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467617A (en) * | 2016-02-16 | 2016-04-06 | 侯绪华 | Defocused progressive multi-focus contact lens |
| CN109143612A (en) * | 2018-11-23 | 2019-01-04 | 北京中青辰光眼健康管理有限公司 | A kind of bias defocus eyeglass |
| CN109946849A (en) * | 2019-04-25 | 2019-06-28 | 齐备 | Optical frame glasses |
| CN114779457A (en) * | 2022-03-22 | 2022-07-22 | 北京优瞳睿视科技有限公司 | Far image display device |
-
2014
- 2014-04-08 CN CN201410136679.7A patent/CN103941420A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467617A (en) * | 2016-02-16 | 2016-04-06 | 侯绪华 | Defocused progressive multi-focus contact lens |
| CN109143612A (en) * | 2018-11-23 | 2019-01-04 | 北京中青辰光眼健康管理有限公司 | A kind of bias defocus eyeglass |
| CN109946849A (en) * | 2019-04-25 | 2019-06-28 | 齐备 | Optical frame glasses |
| CN114779457A (en) * | 2022-03-22 | 2022-07-22 | 北京优瞳睿视科技有限公司 | Far image display device |
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