CN1041224A - Low vision spectacles - Google Patents

Abstract

The invention discloses a kind of glasses, be used for improving those and have macula degeneration, the people's of low visual problems such as optic nerve injury eyesight.These glasses are made of two lens combination, and each lens combination has amplifying lens and reducing glass with two concave surfaces of two convex surfaces of a tool.Reducing glass comprises prism rings, and this prism rings arrives amphiblestroid unmarred part with video or light focusing.Be provided with a support and be used for, and make them be limited to fixed intervals on the optical axis between them with a predetermined direction the pre-spacing of each lens supports at the eyes that leave the user.The invention also discloses the of lens own and their using method.

Description

Low vision spectacles

The invention relates to have spot (retina) degenerate, the damage of optic nerve or the similar used modified glasses of people of low visual problems, be actually about being used for the lens subassembly of such glasses, and about the method for the eyesight of improving the people who uses such glasses and lens.

For these people with visual problems have designed various types of devices.The most general such device is exactly the glasses of the light-ray condensing of looking object on the retina at eyeball rear.Inadequate gathering often has, and this situation is normally because unfavorable gathering of the cornea of eyeball and lens is caused.The imaging light of or refraction incident crooked inadequately when cornea and lens, such light just accumulates on the nethike embrane inadequately, its as a result optic nerve just can not transmit correct information to brain to produce normal vision.A lot of such problems are owing to non-spherical eyeball causes.Mechanical lens normally can be corrected such visual problems.Such mechanical lens can adopt the form of contact lens and glasses etc., and these all usually used a lot of years.

But, when the fault eyesight is owing to the amphiblestroid all or part of degeneration of the spot of eyeball back or inner face causes, therefore and worried people recovers normal eyesight or owing to worsening, the optic nerve that usually takes image to brain from retina causes that standard lens is not enough usually so that.

For the various commodity device that overcomes low visual problems has been subjected to limited commercial acceptance.One of these devices are the so-called thin systems (Finebloom System) that spends.This thin colored system has cylinder structure, and it comprises the mirror that is connected to a pair of traditional eyewear.This device can help a patient to gather on the object of certain distance.Intensity that the pipe mirror then strengthens collected light makes a retina or an amphiblestroid part of having degenerated, or the optic nerve of having degenerated plays a role once more, thereby recovers eyesight to a certain degree.Focusing for different distance must be used different pipes.In addition, such system is limited to suitable small or tunnel eyesight to the user.

Another kind of low eyesight is auxiliary to be optics contact lens system.What this system comprised negative power disperses the contact lens group, and this lens combination is used with the convergent lens group of traditional positive.Contact lens group and user's eyes must be shifted to or move apart to positive lens groups, as using telescope.The patient uses such system to have than wide visual field when using thin colored system, but magnification then becomes problem.Vertex distance, or the distance from the contact lens of negative power to the front portion of the place ahead positive lens produce a look in the distance mirror image bigger than normal size.Its result makes the user produce the problem of a depth preception.Observed object becomes and has closely howed than its actual range.In addition, as an actual problem, the user of most of this system is older, and they can run into how to load onto or remove the problem of its contact lens down.

The disclosed various lens devices of prior art, structurally the similitude with lens devices of the present invention is limited.The initial telescope of slightly being invented by the markon, for example, used negative power lens and user's eyes are approaching, and make up with positive optics of lens on the certain distance that is installed in pipe.Present most telescope all has the distance of regulating between lens so that the function that can assemble on different distance.In addition, most of telescopes all are designed to have enlarging function, rather than will reach the purpose of effectively assembling one to one that common glasses will be reached.

This lens devices has in addition used the combination of positive characteristic or negative characteristic lens, this can grant Glan this United States Patent (USP) 2,474,837 and grant in the United States Patent (USP) 3,511,558 that Chinese tallow tree breathes out root and find.These inventions are disclosed to be directly for for example device as the magnifier use in telescope or camera, its effect and method of throwing light on increase in whole distance ranges of the present invention, seeking to keep a man-to-man image is diverse to solve low visual problems.Though have some structural similitude between these inventions of prior art and the present invention, their differences structurally make them can not be used for purpose of the present invention.

In addition, in another prior art, the lens devices that is used for glasses is disclosed, the United States Patent (USP) 968,693 that these can grant Luo Er, grant contract United States Patent (USP) 2,092,789 also, authorize the United States Patent (USP) 3 of Man Haier, 720,218 and grant in the United States Patent (USP) 3,877,987 reined in of holder and find.In all these prior aries, these lens combination are to be suitable for to change its shape and power in combination, to solve patient's collected light problem, just as camera of working improperly and the caused the sort of problem of lens by one, it is accumulated on the retina, rather than accumulate on the amphiblestroid selected especially field.The lens devices of all these prior aries does not all strengthen the ability of light, to help to have the patient of the low visual problems that causes owing to retinal degeneration or optic nerve injury.Great majority these prior aries described lens devices, all be with just and or negative combination of lenses become independent lens together.So they just improve ability of aggregation as lens independently to help the patient.In addition, as mentioned above, though between the present invention and these prior-art devices, there is some structural similitude,, their difference structurally makes those prior aries can not be used in purpose of the present invention.

Though, also have other lenses and optical devices with various mode combinations, existing in the past disclosed overcoming optical problem widely, but they all do not propose the creationary usage that has as the glasses with positive and negative power lens of the present invention.The lens of those positive and negative power with fixed distance separately, and and a prism combine, overcoming retinal degeneration, the purpose on optic nerve damage and the class low visual problems of generation with what reach them.The invention solves prior art problems, and reach its purpose and benefit with minimum service part and minimum cost.The present invention has eliminated tunnel that the patient will stand or small eyesight and has eliminated the patient and will wear heavy device or the necessity that often need readjust the device of gathering.These purposes and benefit should be interpreted as comparatively outstanding feature and application just of the present invention as an illustration.In scope of disclosure of the present invention, can reach other many useful results by adopting different application modes or modification.Therefore, describe claims that are described in detail, limit scope of the present invention of preferable enforcement and obtain in conjunction with the accompanying drawings at become reconciled place and it is buried comprehensively separate can be by with reference to summary of the invention of the present invention of other purposes of the present invention.

The present invention is limited together with each embodiment shown in the drawings by claims.For briefly the narration the present invention, the present invention combines with glasses with man-to-man multiplying power throw light, comprise first lens with positive optical characteristics, one has second lens of negative optical characteristics, and combines the relative position with the fixed first lens and second lens with a prism apparatus.At least between the central field of these lens, leave the space.First lens have a convex surface at least, best two convex surfaces.Space between the lens is to be situated between between about 1.2mm～about 1.5mm.First lens have the edge that a thickness is about 0.5mm～about 1.5mm.Wherein being one and having the convex surface that diopter is about curvature of 2.13～about 4.76 of first lens near a side of second lens.The central thickness of second lens is about 1.2mm～about 1.6mm.And there is a concave surface that side near first lens of second lens, and its curvature is to be approximately 4.29 diopters to about 6.72 diopters.In another embodiment of the present invention, a bifocal has constituted the part of first lens.

The present invention also comprises the used improvement glasses of people that cause low visual problems for those owing to macula degeneration, refreshing nervous lesion etc.A lens combination and a support that this improvement glasses are dispersed the reducing glass that receives light by an amplifying lens and with receipts use reception light are formed.This support leaves user's eyes in order to support said lens combination with a pre-distance, and supports said lens and make them be in a predetermined relative positions and limit a space along the axis of lens between them.Space between these lens is about 1.2mm to about 5.0mm.The about 0.5mm of the thickness at the edge of amplifying lens is to about 1.5mm.That side of amplifying lens contiguous space has a convex surface, and the curvature of this convex surface is situated between about 2.13 diopters between about 4.76 diopters.The central thickness of reducing glass is about 1.2mm to about 1.6mm.That side that it is adjacent to said space has a concave surface, and its curvature is about 4.29 diopters to about 6.72 diopters.In another form of the present invention, glasses further can comprise a bifocal, and these lens have constituted the part of amplifying lens.

The present invention also can be regarded as by in order to improve those have macula degeneration, optic nerve injury or similarly the glasses of the people's of low visual problems eyesight constituted.This glasses comprise two lens combination.Each lens combination has an amplifying lens, and these lens have the thickness at two its edges of convex surface to be about 0.5mm to about 1.5mm.Each lens combination has a reducing glass simultaneously, and these lens have two concave surfaces, and its central thickness is about 1.2mm to about 1.6mm.The lens of each lens combination are arranged along their optical axis.Such glasses also comprise the support of each lens of each lens combination of supporting, make each lens leave user's eyes within a predetermined distance, and this support is also supporting the lens of each lens combination, makes them be in predetermined relative positions.Each lens of each lens combination define a space that is at least about 1.2mm to about 5.0mm along their optical axis.For each lens combination, that side in the said space of adjacency of amplifying lens has a convex surface, between almost about 2.13 diopters of its curvature and about 4.76 diopters.And for each lens combination, the side that is adjacent to said space of reducing glass has a concave surface, and its curvature is situated between between about 4.29 diopters and the about .672 diopter.

The present invention comprises that simultaneously being used for improving those has for example method of the patient's of low visual problems such as macula degeneration, optic nerve injury eyesight.This method comprises the convergence step, will be by first lens from the imaging convergence of rays of looking object, and the eyes of these ray cast after assembling to above-mentioned patient.This method also comprises disperses step, by second lens, disperses the light that is throwed, and the precalculated position of these ray cast after dispersing in the patient's eye.This method further comprise with around all the other light be directed on the retina to improve its video sensitivity.At last, this method comprises the sloped position of step first lens are made to(for) second lens, so that 1 image is selectively gathered on patient's the retina, under any circumstance, the 2nd lens all remain on preset distance leave the patient eyes and with the range-independence of the object of being seen.

For make following can easy to understand for explanation of the present invention, on regard to of the present invention outstanding and important feature and all done narration widely so that the present invention will obtain more fully evaluation for the contribution in this field.Other features of the present invention will be in following narration, and these features have been formed the main body of claim of the present invention.Those skilled in the art, should be realized that design of the present invention and certain embodiments can be used as change with the basis of designing other structures to realize identical purpose of the present invention.Those skilled in the art will be appreciated that structure of equal value do not leave said in the claims the spirit and scope of the present invention.

Design for a more complete understanding of the present invention, purpose and benefit should be with reference to the following detailed descriptions that has accompanying drawing, and these accompanying drawings are:

Fig. 1 is to use the vertical view of the lens carrier assembly of lens of the present invention;

Fig. 2 is the rear view of the lens carrier assembly of Fig. 1;

Fig. 3 is the upward view of the lens carrier assembly of Fig. 1, shows the hinge through action of this assembly;

Fig. 4 is the sectional view of a kind of form of lens of the present invention; With

Fig. 5 is the planimetric map that constitutes the convex lens of some of the present invention.

Fig. 1,2 and 3 demonstrates a kind of form of the eyeglass holder assembly 10 that supports lens combination of the present invention, and this glasses are used to improve for example macula degeneration, the patient's of low visual problems such as optic nerve injury eyesight.This bracket component comprises a standard lens support or spectacle-frame 12, securely amplifying lens is remained on the suitable direction for the people's who uses this glasses eye.Spectacle-frame 12 is preferably made with plastic cement, so that when supporting heavy object, lighter weight is arranged.There is a groove with well-known method formation on the surface, inside of spectacle-frame 12, is applicable to the edge of accommodating convex lens as embedded groove, and will remains on needed position in it.Bracket component comprises elongated side lever 14 and 16 simultaneously, its end is reclinate arm, so that in user's location, ear back, simultaneously, guarantee glasses on user's head keeping support, thereby make lens subassembly be in suitable direction with respect to user's eyes.Hinge 18 and 20 preferably is positioned on the front end of pressing close to spectacle-frame of side lever, so that make each part of glasses be folded into compact structure when not using.Spectacle bridge 22 links to each other with 26 with two lens perforates 24, and across user's nose.Like this, the optical axis of the lens in bracket component 10 is normally consistent with the optical axis of user's eyeball, make by look object be arranged on one suitable look see decide on the direction.

Bracket component 10 also comprises an inner support 28, so that second pair of lens remained on respect on the precalculated position that remains on the lens in the support 12.Support 28 also is the type of being known well of this area, preferably includes one and has low-quality metal wire frame, so that make the size after support 12 and 28 combinations keep lessly.As shown in Figure 1, support 12 can turn to support 28 by hinge 30 and 32, and it makes support 12 for support 28 at most rotatable 5mm.Fig. 3 demonstrates the support after the rotation.Can understand that from following narration the feature of an innovation of this system is that a prismatic effect is combined in the creationary lens, thereby the image of being looked thing can be gathered on the amphiblestroid specific region.In some patient, the trouble of diabetes for example, its amphiblestroid part may be to change every day for the sensitivity of light.By the micro actuator of a support 12 and 28 relative positions is installed, just can change the position that is gathered into picture.As long as the optical centre of lens is unaffected, image just can not worsen.Internal stent 28 comprises nose member 34 and 36, so that support element 10 is supported on user's the nose in the mode of knowing.

The sectional view of a kind of form of lens combination is shown in Fig. 4.First or outer lens 38,, be positive or positive optical characteristics promptly away from the lens of user's eyes 40, it acts on as the amplifying lens in the optical system.The convergence of rays that such lens will receive from an object of looking 42.In preferred embodiment of the present invention, these lens have two convex surfaces, and one of them convex surface is in its place ahead or the outside 44, and another convex surface is at his rear or inboard 46.Normally, the rarest surface of positive lens is a convex surface.These lens have enough sizes to bring into play its suitable imaging effect, and its edge thickness is situated between between about 0.5mm and the about 1.5mm.Its inboard 46, promptly near user's eye there, its curvature preferably is about the convex surface between 2.13 diopters and about 4.76 diopters.Diopter is a unit of measuring a lens refracting power, the inverse the when Focus length that equals it is unit with rice.

The 2nd lens 48 of each optical system are optical characteristics negative power or negative, and its effect is looked the image of object by dispersing received light to dwindle.These lens have preferably caused two concave surfaces, and one of them concave surface is in its place ahead or the outside 52, and another concave surface is at its rear or inboard 54.The diameter of these lens preferably is slightly larger than the diameter of lens 38, and has center thickness between about 1.2mm and about 1.6mm.Curvature the 2nd lens 48 or outside concave surface 52 is preferably between 4.29 diopters and 6.72 diopters.

The various lens of optical module preferably are made of glass or plastic cement with commercial lens quality, and have operability.Such material is usedly known many in the art, is easy to buying on the market, and intactly describes to some extent on publication.

Along the space 50 between the lens of the optical axis 62 of lens, usually between about 1.2mm and 1.5mm.From the imaging light of being looked object, assembled by first lens 38, through space 50, dispersed through second lens 48 then.Lens subassembly, lens 38 and 48 for example design and are configured to produce like this 1 pair 1 multiplying power basically, and this use for glasses is suitable.Space between lens 38 and the lens 48 can be regulated by rotation rack assembly.Can be moved at most at a distance of 7.5mm at these lens of bifocus field.This additional separation can provide additional multiplying power in the bifocus zone.

The above mainly be at lens subassembly or comprise certain lenses and the lens combination in space between them to improve user's low visual problems, the present invention also should be interpreted as comprising the eyeglass holder that combines with lens subassembly, to support two such assemblies, the lens that make each assembly are supported with suitable mutually direction, simultaneously, make them be in suitable direction for user's eyes.

Fig. 4 also demonstrates and is additional to first lens 38, preferably at its outside or a bifocal 64 on the front side surface 44.This bifocal designs according to intrinsic custom, and is positioned at or is placed in front lower place near first lens of the front of spectacle-frame.It has constituted an auxiliary field of lens surface.This bifocal is had an effect as the bifocal of standard in common mode, and the main scope that makes the patient pass through these lens can be read in-plant thing.Bifocal and their manufacture method and usage all are well-known in the art.Except general bifocus function,, provide the function that strengthens image as above-mentioned people for low visual problems according to the glasses with bifocal of the present invention.

With reference to Fig. 5, shown in the figure is a front elevation of inboard lens 48 of the present invention.The beginning edge of outside line 74 expression outside concave surfaces 52.The beginning edge of the inboard concave surface 54 of interior lines 76 expressions.For the sake of clarity, these lines 74 and 76 position are amplified.The relative mistake of the diameter of the outside and inboard concave surface 52 and 54 defines prism or circular refraction interface 78, and this refraction interface is actually a reflecting surface 80(and sees Fig. 4).Prism surface 78 has strengthened the light collecting light ability of lens 48, and makes the image of investing eyes become bright.By changing surface 52 and 54 relative position and changing their relative size, can make image gather retina 70 activity or unhurt field on, promptly the optical centre of lens 40 can be moved to the focus areas on the eyes.Preferable is that the diameter of inboard concave surface 54 remains unchanged and the diameter of outside concave surface 52 can arbitrarily change.Usually, the diameter of concave surface 54 be 35mm and concave surface 52 diameter can 38 and 50mm between change.The every change 1mm of prism surface size that is limited will make image change 5 degree angles for the optical axis of lens.As mentioned above, can know that this lens combination is that two differences and function are independently arranged.First function is with an image-guided amphiblestroid photosensitive part to the user.Second function is to strengthen the amphiblestroid light quantity of directive as optical collector.Can believe that the image-guided function of light harvesting function ratio may be more important.For example in some eyesight test, the patient is in the darkroom, and when being instructed to observe image on fluorescent screen, has been found that very small eyesight improving can measure.But same patient but experiences the remarkable improvement of eyesight in well-lighted room.This light harvesting effect believes that owing to prism facets 78 causes this prism facets 78 is being effective to the light guiding on retina.Should be noted that this is not that prism facets 78 makes institute's image of looking change direction, and just increased the light quantity that enters eyes, thereby make eyes responsive more for video information.

Also should note simultaneously, prism rings or annular refraction connect face 78 can different width, and surface 80 the angle for its diameter can be used as the function of the diameter of outer concave surface 52 and radius-of-curvature and changes, and the radius-of-curvature of inner concave then changes along with projecting the light quantity (illuminance) on the retina.In addition, other variations as lens material, outer curvature radius also can influence the focus area of the light that is reflected by prism rings for the concentricity of intrinsic curvature radius.Each factor to these factors can be controlled, so that optical illumination is directed to the amphiblestroid part that works most.

When an assembling lens combination of the present invention, for user's needs have designed a standard first or amplifying lens 38 and standard second or divergent lens 48.The method that the mediating a settlement in detail of relative assembly selected lens is at U.S. Patent application 226, the 791(applying date: provide on August 1st, 1988).In assembling process, can move up and down according to patient's needs first lens, the lens of variable focal length on camera is to assemble imaging effectively.When the video of looking object is assembled according to the particular patient needs, object will by after must be clear, this information is utilized to prepare a lens combination.By calculating distance from first lens, 38 to second lens 48, multiply by the power of first lens, and the curvature by correct power and lens is so that can be fixing forming last lens combination with the relative position of two lens, or is placed in the support as Fig. 1～3.Can understand, under certain condition, the optical axis of patient's lens may slightly deviate from the patient the eye optical axis to carry out suitable assembling.When patient's amphiblestroid photosensitive part departed from the optical axis of eye, said circumstances just may take place.

Except above-mentioned device, the present invention comprises that also improving those has method such as the patient's of low visual problems such as macula degeneration, optic nerve injury eyesight.This method not only comprises the step with the light-ray condensing of looking object, also comprises the step that strengthens the light intensity on the retina that is gathered in the patient simultaneously, and this step is improved user's eyesight effectively.When imaging light during from the user's of positive lens 38 the object of being looked 42 projection, this method is at first assembled this imaging elder generation line to strengthen video.Ray cast after these lens also will be assembled is to the patient, i.e. this person's that looks the thing eyes.Arrive at light before user's the eyes 40, the light that is throwed is through a space 50 and one second lens 48.

On the 2nd lens 48, received light is put by the negative power of second lens 48 and is dispersed, and these light are gathered on user's the amphiblestroid photosensitive part then.In addition, second lens 48 combine with prism facets 78, and this prism facets 78 has the light harvesting power that strengthens lens combination and other light of guiding function to user's the retina.This method also comprises positive lens and negative lens is remained in two frame members 10, makes their mutual stationkeeping, and form the step in a space between them.This method also comprises each lens remained on step on the user's who leaves this device the preset distance of eyes 40, and no matter the distance of the object of looking 42.

The disclosed content of the application comprises information and the above-described information that is documented in claims.Though the present invention by its preferable form or embodiment with to a certain degree special property and narrated, but, the disclosed preferred versions that will be appreciated that the application is an example as an illustration, and various changes structurally, assembling and use comprise the combination and permutation of its parts and step, all are attainable in the spirit and scope of the present invention not leaving.

Claims (19)

1, a kind of method of assembled glasses, these glasses be used for from the enhancing in an object source light focusing to degenerating partially of the inside surface that is positioned at eyes the amphiblestroid photosensitive part of spot on, said glasses comprise a positive lens and the negative lens with an optical centre and a prism, it is characterized in that this method comprises the steps:

Form positive and negative lens;

When forming negative lens, with the initial point centralized positioning of negative lens, the prism on all circumference that have on this negative lens at this negative lens passes through and the directive retina light that enters this negative lens in advance;

Positive lens and negative lens are assemblied on the predetermined relative positions; With

In installation step, optical centre is positioned on the preposition, thereby the direction of control image during by positive lens, is focused into an image from the converging ray of reference bundles of objects with box lunch on amphiblestroid photosensitive part.

2, the described method of claim 1, it is characterized in that, installation step comprises a support is set, with the step of lens supports on preposition, this support has adjustable lens supports partly, said method further comprises the selectively step of the relative position of correcting lens, so as on the different selection zone of retina focal imaging.

3, a kind of method of damaging the people's who causes the severe visual deterioration eyesight because of amphiblestroid photosensitive part that strengthens is characterized in that this method comprises the steps:

From the imaging convergence of rays of being looked object, to form the magnified image of object;

Disperse magnified image to correct multiplying power;

To disperse image and focus on people's amphiblestroid photosensitive part; With

Other light on every side are directed on people's the retina, to strengthen the image reaction.

4, the described method of claim 3 is characterized in that guiding step to comprise the steps:

A divergent lens is installed; With

Formation is surrounded on a prism rings on the surface of said divergent lens, and with its location, so that light on every side is directed on people's the retina.

5, the described method of claim 4 is characterized in that, agglomeration step comprises with said divergent lens places a convergent lens so that selectively focus is positioned on people's the retina angledly.

6, a kind of glasses that strengthen people's eyesight, said people is characterized in that owing to its amphiblestroid photosensitive part damage causes eyesight to worsen these glasses comprise:

An outside positive lens is used for assembling the light that receives from an object;

An inboard negative lens, and be separated by switch and being placed between said outer lens and people's the eyes of said positive lens, said in lens have an effect ordinatedly with said outer lens, to guide on the amphiblestroid photosensitive part from the light directive people of object; With

A prism rings, this prism rings be round said inboard lens, and be oriented near light is directed to direction on people's the retina.

7, the described glasses of claim 6 is characterized in that said prism rings is to be arranged on the inside surface of said inboard lens.

8, the described glasses of claim 6 is characterized in that, said inboard lens are biconcave lens, and the concave surface of the outer surface of these lens radius partly is greater than the concave surface radius partly of its inner surface, and their difference defines prism rings.

9, the described glasses of claim 8, it is characterized in that, described inboard lens comprise an angled cut surface around outer periphery, this surface is at the inside surface concave surface of interior lens partly and between outward flange radially, said angled cut surface, the refractive surface that forms annular with light refraction to retina.

10, a pair of glasses, be used for received reinforced light-ray condensing from an object to macula degeneration partly amphiblestroid photosensitive part on, this retina is positioned at the inside surface of eyes, it is characterized in that, said glasses comprise:

An outside positive lens is used for assembling the received light from the object source;

Inboard negative power lens, it separates between said outside positive lens and eyes and with said outside positive lens, said inboard lens are selectively controlled the direction of video, so that accumulation imaging on amphiblestroid photosensitive part, said inboard lens have one towards the outer concave surface of first diameter of outside lens and one inner concave of second diameter of outside lens dorsad, and said second diameter is less than said first diameter; With

One around said inboard lens and be directed, so that will inject the annular prism of the light refraction of said lens to the optical centre of said inboard lens.

11, the described optical system of claim 10 is characterized in that, said prism comprises a plane of refraction, and this plane of refraction is to select a radius greater than the inner concave radius to be formed on the inboard lens by outer concave surface.

12, the described optical system of claim 10 is characterized in that, said outside lens have two convex surfaces.

13, the described optical system of claim 10 is characterized in that, the space interval between the said lens is about 1.2mm to about 1.5mm.

14, the described optical system of claim 11 is characterized in that, said outside lens have a thickness to be about the edge of 0.5mm to about 1.5mm.

15, the described optical system of claim 11 is characterized in that, said inboard lens have its thickness to be about the center of 1.2mm to 1.6mm.

16, the described optical system of claim 11 is characterized in that also comprising a bifocal of a part that constitutes said outside lens.

17, the described optical system of claim 11, it is characterized in that further comprising: a support, be used for supporting said inboard and outside lens, make them leave user's eyes with a predetermined distance, and make them with a predetermined mutual direction, optical axis along said lens limits space interval between them, to disperse to project the light between said inboard and the outside lens.

18, the described optical system of claim 17 is characterized in that, the space interval between the said lens is about 1.2mm to about 1.5mm.

19, claim, described optical system, it is characterized in that said support comprises first support element that supports said outside lens and second support element that supports said inboard lens, said first support element is connected to each other with second support element and pivots moving so that can make relative axle.

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