CN2465689Y

CN2465689Y - Vision protection glasses

Info

Publication number: CN2465689Y
Application number: CN 01215264
Authority: CN
Inventors: 王平
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-21
Filing date: 2001-02-21
Publication date: 2001-12-19
Anticipated expiration: 2011-02-21

Abstract

The utility model relates to healthy spectacles for preventing eyestrain and myopia. The bases of triple prisms of the left and right lenses are inward and faces at a straight right direction of a nose, the degrees of the left and right prisms, the range of each of the prism degree is from 6 DEG to 10DEG, and the lenses of a triple prism, a spherical lens or a cylinder lens are combined into an integral structure. When the spectacles are wore for reading, writing, or operating a computer, ocular muscles and ciliary muscles are in a relax state; thereby, the utility model has the effects that the eyestrain can be eliminated, the myopia or the deepening of myopia degree can be prevented.

Description

Vision protection glass

This utility model is a kind of glasses that prevents eyestrain and myopia, and it is particularly suitable for long-time reading, write or wear during with computer usefulness.

Eyestrain and myopia to occur in modern society comparatively general, especially myopia has become serious social concern, brings inconvenience for people's studying and living.The glasses that does not have a kind of real practicality and effectively pre-myopia prevention now on the market.Once the someone adopted and wore the pre-myopia prevention of convex lens in the past, but this glasses can not loosen extraocular muscles, thus can not really pre-myopia prevention, and the design of this glasses is wrong in theory." OME glasses " (application number: 89219609.2) of a kind of being called is arranged, be a kind of very ideal in theory glasses, but it is too thick, too heavy that the shortcoming of this glasses is eyeglasses, because its design is tiltedly to loosen ophthalmic lateral rectus and last inferior retcus simultaneously in the below with the prism substrate by nasal side, so it is than the eyeglass prism number of degrees height that only loosens interior lateral rectus, thick, make inconvenience, wear with also uncomfortable.(application number: 97243247), its weak point is to wear with looking nearly thing to guarantee to loosen a last inferior retcus fully to also have a kind of being called " Eye health glasses " in addition.Because its eyeglass prism degree scope is between 1.5 Δs～8 Δs, generally be distance about 33 centimetres and look nearly thing, eyeglass will need 10 Δ left and right sides prism degrees, and 8 Δ prism degrees can not guarantee to greatest extent that the ophthalmic lateral rectus loosens.

The purpose of this utility model is to provide a kind of Vision protection glass, it can alleviate or eliminate the tense situation of looking early work industry extraocular muscles and ciliary muscle, allow eyes wear mirror and see that nearly thing can keep state the same when seeing distant objects, thereby play prevention eyestrain and the generation of myopia or the effect of development.

This utility model is made up of mirror holder and eyeglass, eyeglass is installed on the mirror holder, eyeglass is the inside prism associating concave-sphere of substrate or the falcate structure of post mirror, left and right sides eyeglass prism substrate inwardly, towards nasal side over against, left and right sides prism degree equates, the prism degree scope between 6 Δs～10 Δs, unite prism is arranged, the eyeglass of concave-sphere or mean of cylindrical diopter is an overall structure.

The substrate of the novel employing prism of this reality inwardly over against, i.e. substrate direction towards nasal side over against, to alleviate or to eliminate the spoke axle effect of eyes when looking near thing, loosen interior lateral rectus.It limits the scope that eyeball rotates up and down by reducing center of lens vertical direction back gauge, to loosen a last inferior retcus, with the weight of having advanced to alleviate eyeglass.

Below in conjunction with drawings and Examples this utility model is described.

Fig. 1 is this utility model structural representation.

Referring to Fig. 1, wherein (1) is mirror holder, and (2) are eyeglass, and (3) are the prism structures substrate direction of eyeglass.

Vision protection glass is made up of mirror holder and eyeglass two parts, and eyeglass is optical glass or optical resin lens, has prism degree, and is thicker, heavier than general lens, so the eyeglass installation requirement is firm.The rotation amplitude up and down of eyes is to loosen inferior retcus down when wearing mirror for restriction, center of lens vertical direction back gauge is narrower, this back gauge scope should be between 2.5～3.5 centimetres, center of lens horizontal direction back gauge is not limit, decide according to the model of mirror holder and shape, when looking thing and exceed field range, reach and see object by rotating head and neck, the slewing area up and down of eyeball just has been defined like this, goes up inferior retcus when having guaranteed to look nearly thing and loosens.Eyeglass is the falcate structure, under anastigmatic situation, front-back forms for the convex-concave sphere, because the eyeglass prism degree is higher, allow eyeglass thin as far as possible again, differing by the way of moving photocentre obtains enough big prism degree surely, thus convex-concave sphere centre of sphere line without the thinnest point of eyeglass, promptly the thinnest point and two centre of sphere lines have a certain degree.It is that the ophthalmic lateral rectus loosens when guaranteeing that Dai Jing looks near thing that eyeglass has enough prism degrees, reduces intraocular pressure.Simultaneously eyeglass need be united certain concave-sphere number of degrees, and its refractive power will guarantee that ciliary muscle is in relaxation state on the one hand, will guarantee also that on the other hand eyes can see object clearly.When glasses wearer's eyes had astigmatism, eyeglass also need be united the corresponding notes mirror number of degrees, and just to look thing clear for eyes like this.

So, how are the prism degree of eyeglass, the concave-sphere number of degrees, astigmatism degree determined?

The prism degree of eyeglass, the concave-sphere number of degrees are determined by following formula:

A=50d/L formula (1-1)

F=E+l/L formula (1-2)

The meaning of letter representative in the formula: A is the Vision protection glass sheet prism number of degrees; F is the concave-sphere number of degrees of eyeglass; E reaches 1.0 o'clock the rectification number of degrees for glasses wearer's optometry vision, and E is a negative during myopia, is positive number during hypermetropia, just is being considered as zero; D is glasses wearer's a interpupillary distance; L is regular distance of looking nearly object that work is looked apart from eyes.D, L all get a meter office, and the unit of A is " a Δ prism degree ", and the unit of F and E is " D-diopter ".

Join in the mirror actual, regular value of looking nearly object that work is looked apart from the distance L of eyes, generally can be in two kinds of situation, a kind of situation is the glasses wearer who often reads for a long time and write just, L gets 0.33 meter, because books are generally far away from eyes one chi, in this case, the Vision protection glass sheet generally has 10 Δ prism degrees, be the A=10 Δ: another kind of situation is often also to need long-time glasses wearer with computer except that reading and writing, and should get 0.4～0.5 meter, because display screen is 0.4～0.5 meter far away from eyes generally, in this case, eyeglass generally has 6.6～8 Δ prism degrees.Since the distance of looking nearly thing generally 50 centimetres with interior scope, interpupillary distance is generally about 6.5 centimetres, so the prism degree scope is between 6 Δs～10 Δs.

For eyes scattered-light glasses wearer is arranged, eyeglass is united and is equaled optometry at mean of cylindrical diopter and correct defects of vision and reach 1.0 o'clock required mean of cylindrical diopter.

This utility model operation instruction:

1, reads, writes with Vision protection glass or when using computer, the object of looking should roughly remain on regular distance L (being generally 0.33 meter or the 0.40 meter) position of looking nearly object that work is looked apart from eyes of design to the distance of eyes, eyes just can loosen to greatest extent.

2, Vision protection glass is only limited to when looking the early work industry and uses.

Wear with this utility model and read, write or the electricity consumption brain-capacity makes extraocular muscles and ciliary muscle be in relaxation state, thereby play the effect that eyestrain and pre-myopia prevention or myopic degree deepen of eliminating.

Claims

1, a kind of Vision protection glass, form by mirror holder and eyeglass, eyeglass is installed on the mirror holder, eyeglass is the inside prism associating concave-sphere of substrate or the falcate structure of post mirror, it is characterized in that: left and right sides eyeglass prism substrate inwardly, towards nasal side over against, left and right sides prism degree equates, the prism degree scope between 6 Δs～10 Δs, unite prism is arranged, the eyeglass of concave-sphere or mean of cylindrical diopter is an overall structure.

2, Vision protection glass according to claim 1 is characterized in that center of lens vertical direction back gauge is narrower, and scope is between 2.5～3.5 centimetres, and center of lens horizontal direction back gauge is not limit.