CN104849875A - Corneal contact lens - Google Patents
Corneal contact lens Download PDFInfo
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- CN104849875A CN104849875A CN201510228750.9A CN201510228750A CN104849875A CN 104849875 A CN104849875 A CN 104849875A CN 201510228750 A CN201510228750 A CN 201510228750A CN 104849875 A CN104849875 A CN 104849875A
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- photic zone
- diameter
- contact lens
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
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- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
Abstract
The invention discloses a corneal contact lens for correcting presbyopia. The corneal contact lens comprises a plurality of lenses, wherein at least the center of each lens is a light transmitting area, each lens is provided with a shading area, after the corneal contact lens is worn, parts of pupils are covered by the shading areas, each light transmitting area is round, the diameter of each light transmitting area is smaller than that of the pupils, each shading area is annular, and the outer diameter of each shading area is greater than the diameter of the pupils. The diameters of the lenses are different from each other. Based on common corneal contact lenses (comprising a convex lens for correcting hyperopia, a concave lens for correcting shortsightedness, a plate lens for beautifying, and even a semitransparent lens or a non-transparent lens) in the existing technology, the corneal contact lens for correcting presbyopia further increases depth of focus, the near vision of a wearer can be improved under the premise of not influencing the distant vision of the wearer, space depth range which can be seen by the wearer is increased, and the wear can more clearly see a watch object in larger space distance range, especially the watch object at short range.
Description
Technical field
The present invention relates to a kind of glasses, particularly relate to a kind of contact lens.
Background technology
With age, eye regulating power declines gradually, thus there is difficulty when causing patient to see closer object, so that near work, must its ametropia corrected outside separately add convex lens with compensate its lose regulating power, could obtain near vision clearly, this phenomenon is called presbyopia (presbyopia), is commonly called as " presbyopia ".
The essence of presbyopia is that the regulating power of eye goes down.Traditional correcting method wears positivity framework eyeglass (i.e. " presbyopia glasses " or " presbyopic glasses ").Its principle makes the focus of patient's eye to moving nearby.Although near vision is obviously improved after wearing this framework eyeglass, owing to only having a focus, so wear rear distant vision to have obvious decline.Along with increasingly sharpening of Aging Problem and improving constantly of quality of life, this traditional single focus presbyopia glasses can not meet many presbyopia patients and both wish to see far clear, wishes again to see nearly requirement clearly.Therefore, various bifocus and multifocal presbyopia framework mirror and contact lens (contact lenses) arise at the historic moment.Although these eyeglasses tentatively solve and can see and far can see near demand again, also bring various visual problem, as ghost image, dizzy, blurred vision, metamorphopsia etc.
At this, first introduce the concept of the depth of field, can simultaneously by soon clearly spatial depth be called the imaging space degree of depth of eye, be namely the depth of field of eye.
Single focus presbyopia glasses (convex lens) only has a focus, has a depth of field relative to this focus.After people wear single focus presbyopia glasses of prior art, in-plant object of regard can be seen clearly, but because the depth of field of single focus presbyopia glasses of prior art is less, so, remote object of regard can drop on outside the depth of field, therefore, people do not see the remote object of regard of Chu after wearing single focus presbyopia glasses of prior art.Want to see remote object of regard clearly and must remove single focus presbyopia glasses.So very inconvenient.Particularly, when the anterior-posterior length of object of regard is longer exceed the less depth of field time, people can only see the front portion of object of regard clearly, and do not see the rear portion of object of regard, or people can only see the rear portion of object of regard clearly, and do not see the front portion of object of regard.
Bifocus presbyopia glasses (first half is burnt mirror far away, and Lower Half is nearly burnt mirror) has two focuses, has a close shot dark, have a distant view dark relative to over focus relative to perifocus.People both can see in-plant object of regard clearly after wearing the bifocus presbyopia glasses of prior art, also can see remote object of regard clearly.But because close shot is dark and distant view is dark all less, so, the dark and distant view of close shot deeply between just there is confusion region.The object of regard people being positioned at confusion region are just difficult to see clearly.
Multifocal presbyopia glasses (from middle part to edge focus by near gradually to far away) has multiple focus, has a depth of field relative to each focus.After people wear the multifocal presbyopia glasses of prior art, although different far and near object of regard can be seen clearly, because the not confocal depth of field creates coincidence, so, likely produce the phenomenon of ghost image, dizzy, metamorphopsia when people see same object of regard.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of contact lens, and this contact lens can improve its near vision under the prerequisite not affecting wearer's distant vision, increases the spatial depth scope that people can see clearly.
In order to solve the problems of the technologies described above, contact lens of the present invention, comprises eyeglass, and described eyeglass comprises photic zone and shading region, and after putting on contact lens, described shading region covers a part for pupil, and described photic zone covers another part of pupil.
Described photic zone is positioned at the central authorities of described eyeglass, described shading region is looped around around photic zone, the maximum radial dimension of described photic zone is less than the diameter of pupil, or, the maximum radial dimension of described photic zone is greater than the diameter of pupil and the smallest radial size of described photic zone is less than the diameter of pupil, and the outer peripheral smallest radial size in described shading region is greater than the diameter of pupil.
Described photic zone is circular, oval or polygon, and the geometric center of described photic zone corresponds in pupil region; The diameter of described circular photic zone is less than the diameter of pupil; The major axis of described oval photic zone is less than the diameter of pupil, or the major axis of described oval photic zone is greater than the diameter of pupil and the minor axis of described oval photic zone is less than the diameter of pupil; The polygon photic zone that described polygon photic zone is triangle photic zone, square photic zone, rectangle photic zone or limit number are greater than four; The inscribed circle diameter of described triangle photic zone is less than the diameter of pupil; The inscribed circle diameter of described square photic zone is less than the diameter of pupil; The inscribed circle diameter of described rectangle photic zone is less than the diameter of pupil; The inscribed circle diameter that described limit number is greater than the polygon photic zone of four is less than the diameter of pupil; Described shading region is annular, and the external diameter of described shading region is greater than the diameter of pupil.
Described eyeglass has multiple, and the photic zone radial dimension of multiple described eyeglass is all not identical.
Wherein, the maximum radial dimension of photic zone is 4.5mm, and the smallest radial of photic zone is of a size of 0.01mm.
The photic zone radial dimension of multiple described eyeglass reduces from big to small successively equably, or the photic zone area of multiple described eyeglass reduces from big to small successively equably.
Described contact lens has one, and this contact lens to be arranged in pairs or groups a common contact lens conbined usage at Second eye; Or described contact lens has one, this contact lens is arranged in pairs or groups a framework mirror conbined usage, and an eyeglass of described framework mirror is plano lens, or, an eyeglass of described framework mirror is removed; Or described contact lens has two, be respectively two described contact lenss of different size, be respectively used to bilateral eye.
The lens that described photic zone is open-work or is made up of transparent material, described lens are simple lens or lens combination, described simple lens is zero degree goggles, positivity concave-sphere, negativity concave-sphere, positivity post mirror, negativity post mirror, prism, multi-focus lens, and described lens combination is by the lens combination superposed successively before and after at least two described simple lenses and/or coplanar is in parallel arranged to form.
Shi Fei photic zone, described shading region or semi-opaque region, described alternatively non-transparent district is made up of non-transparent material, and described semi-opaque region is made up of trnaslucent materials; Or described eyeglass is made up of transparent material, described alternatively non-transparent district contains or is attached with non-transparent material, and described semi-opaque region is contained or is attached with trnaslucent materials; Or described eyeglass is made up of non-transparent material or trnaslucent materials, described photic zone is open-work.
The edge that the outward flange of described shading region is close, meet or exceed cornea.
The making of described contact lens adopt existing soft/hard corneal contact lens sheet manufacture craft and contact lense color printing technology, described shading region is made into the shading region of the shading region of shades of colour, the shading region of various decorative pattern, the shading region of various shape or various radial dimension, or, the shading region of mutually being combined by shades of colour, various decorative pattern, various shape, various radial dimension.
The outer convex surface of described eyeglass is shiny surface, and the inner concave periphery of described eyeglass is Non-smooth surface face or frosting; Or, the inner concave of described eyeglass local or be all coated with bonding agent or be attached with jointing material; Or the inner concave periphery of described eyeglass is frosting and is coated with bonding agent or is attached with jointing material; Or the outer convex surface of described eyeglass and inner concave are shiny surface, there is tissue fixation device in the periphery of eyeglass, and described tissue fixation device is the fixing hook of tissue, organizes geometrical clamp, organizes fixing sucking disk or organize set collar.
Contact lens of the present invention compared with prior art has following beneficial effect.
1, the technical program comprises photic zone and shading region owing to have employed described eyeglass, after putting on contact lens, described shading region covers a part for pupil, described photic zone covers the technological means of another part of pupil, so, this contact lens (can comprise the convex lens correcting long sight at the common contact lens of prior art, the concavees lens of myopia correction, plano lens is cosmetically semitransparent mirror or nontransparent mirror even) basis on increase the depth of field further, its near vision can be improved under the prerequisite not affecting wearer's distant vision, increase the spatial depth scope that people can see clearly, being conducive to object of regard is in the spatial dimension that people can see clearly, be conducive to people and see object of regard clearly, especially in-plant object of regard, more being conducive to the longer object of regard of anterior-posterior length all falls within the scope of the spatial depth that people can see clearly, be conducive to people and see the whole of object of regard simultaneously clearly.Again owing to have employed the technological means of contact lens, so, obviously can not affect the visual field of wearer, can not produce at the moment block sense (muscae genetic vision); The scene seen can be made more clear; The malaise symptoms such as ghost image and spinning sensation can not be produced; The eyes of wearer can be made to keep attractive in appearance.
2, the technical program is positioned at the central authorities of described eyeglass owing to have employed described photic zone, described shading region is looped around around photic zone, the maximum radial dimension of described photic zone is less than the diameter of pupil, or, the maximum radial dimension of described photic zone is greater than the diameter of pupil and the smallest radial size of described photic zone is less than the diameter of pupil, the outer peripheral smallest radial size in described shading region is greater than the technological means of the diameter of pupil, so, effectively can block the light away from the optical axis, the sharpness of image can be improved further.
3, the technical program is owing to have employed described photic zone for circular, oval or polygon, and the geometric center of described photic zone corresponds in pupil region; The diameter of described circular photic zone is less than the diameter of pupil; The major axis of described oval photic zone is less than the diameter of pupil, or the major axis of described oval photic zone is greater than the diameter of pupil and the minor axis of described oval photic zone is less than the diameter of pupil; The polygon photic zone that described polygon photic zone is triangle photic zone, square photic zone, rectangle photic zone or limit number are greater than four; The inscribed circle diameter of described triangle photic zone is less than the diameter of pupil; The inscribed circle diameter of described square photic zone is less than the diameter of pupil; The inscribed circle diameter of described rectangle photic zone is less than the diameter of pupil; The inscribed circle diameter that described limit number is greater than the polygon photic zone of four is less than the diameter of pupil; Described shading region is annular, and the external diameter of described shading region is greater than the technological means of the diameter of pupil, so, multiple contact lens can be produced according to the demand of different client.
4, the technical program has multiple owing to have employed described eyeglass, the technological means that the photic zone radial dimension of multiple described eyeglass is all not identical, so, optometrist can select the eyeglass of corresponding aperture specification according to the pupil diameter of glasses wearer, or, tried on the eyeglass of different aperture specification by presbyopia patient to select the lens prescriptions of applicable oneself requirement.
5, the technical program due to the maximum radial dimension that have employed photic zone be 4.5mm, the smallest radial of photic zone is of a size of the technological means of 0.01mm, so client can wear most suitable contact lens according to different condition choosing, is conducive to applying of contact lens.
6, the technical program reduces from big to small successively equably due to the photic zone radial dimension that have employed multiple described eyeglass, or, the technological means that the photic zone area of multiple described eyeglass reduces from big to small successively equably, so, different contact lenss can be selected according to the State Science of different users's eyes.
7, the technical program has one owing to have employed described contact lens, and this contact lens to be arranged in pairs or groups a common contact lens conbined usage at Second eye; Or described contact lens has one, this contact lens is arranged in pairs or groups a framework mirror conbined usage, and an eyeglass of described framework mirror is plano lens, or, an eyeglass of described framework mirror is removed; Or, described contact lens has two, is respectively two described contact lenss of different size, is respectively used to the technological means of bilateral eye, so, the common contact lens of contact lens of the present invention and prior art or framework mirror can be combined use, or the described contact lens of two different sizes combines use, gives full play to the advantage of respective glasses, learn from other's strong points to offset one's weaknesses, cooperatively interact, interact, improve visual effect and quality further.
8, the lens that the technical program is open-work owing to have employed described photic zone or is made up of transparent material, described lens are simple lens or lens combination, described simple lens is zero degree goggles, positivity concave-sphere, negativity concave-sphere, positivity post mirror, negativity post mirror, prism, multi-focus lens, described lens combination is by the technological means of lens combination that is in parallel arranged to form of superposition and/or coplanar successively before and after at least two described simple lenses, so, different types of contact lens can be produced according to the different demands of user, not only be applicable to farsighted person, also A nearsighted person is applicable to, the user being also applicable to twenty-twenty vision improves eyesight further, thus improve the adaptability of contact lens.
9, the technical program is owing to have employed Shi Fei photic zone, described shading region or semi-opaque region, and described alternatively non-transparent district is made up of non-transparent material, and described semi-opaque region is made up of trnaslucent materials; Or described eyeglass is made up of transparent material, described alternatively non-transparent district contains or is attached with non-transparent material, and described semi-opaque region is contained or is attached with trnaslucent materials; Or described eyeglass is made up of non-transparent material or trnaslucent materials, described photic zone is the technological means of open-work, so, substantially increase raw-material alternative, be conducive to reducing production cost, be conducive to the adaptability improving contact lens.
10, the technical program is because the outward flange that have employed described shading region is close, meet or exceed the technological means at the edge of cornea, so, the contact lens with different size shading region can be made into, be conducive to the demand meeting different crowd, improve the adaptability of contact lens.
11, the technical program because the making that have employed described contact lens adopts existing soft/technological means of hard corneal contact lens sheet manufacture craft and contact lense color printing technology, so, greatly can reduce the scientific research expenditure use of Corneal Contact mirror production method of the present invention, greatly reduce production cost.The shading region of the shading region of shades of colour, the shading region of various decorative pattern, the shading region of various shape or various radial dimension is made into again owing to have employed described shading region, or, the technological means of the shading region of mutually being combined by shades of colour, various decorative pattern, various shape, various radial dimension, so, not only substantially increase visual effect, and, also substantially increase cosmetic result, be conducive to the demand meeting different crowd, improve the adaptability of contact lens.
12, the technical program due to the outer convex surface that have employed described eyeglass be shiny surface, the inner concave periphery of described eyeglass is Non-smooth surface face or frosting; Or, the inner concave of described eyeglass local or be all coated with bonding agent or be attached with jointing material; Or the inner concave periphery of described eyeglass is frosting and is coated with bonding agent or is attached with jointing material; Or the outer convex surface of described eyeglass and inner concave are shiny surface, there is tissue fixation device in the periphery of eyeglass, described tissue fixation device is the fixing hook of tissue, organize geometrical clamp, organize fixing sucking disk or organize the technological means of set collar, so, greatly can reduce the relative movement between human eye and contact lens, avoid the shading region of contact lens to cover the pupil of human eye completely.
Accompanying drawing explanation
Below in conjunction with
accompanying drawingwith embodiment, contact lens of the present invention is described in further detail.
fig. 1for the structural representation of the first contact lens of the present invention
figure.
fig. 2for the structural representation of the second contact lens of the present invention
figure.
fig. 3for the structural representation of the third contact lens of the present invention
figure.
fig. 4for the structural representation of the present invention's the 4th kind of contact lens
figure.
fig. 5for the structural representation of the present invention's the 5th kind of contact lens
figure.
fig. 6for the structural representation of the present invention's the 6th kind of contact lens
figure.
fig. 7for human eyes structure and contact lens signal
figure.
fig. 8for camera imaging principle
figure.
fig. 9for depth of field size with aperture lead to light diameter change signal
figure.
fig. 10 is the structural representation of various lens combination
figure.
Embodiment
as Fig. 1extremely
fig. 7shown in, a kind of contact lens, comprises eyeglass 1, and described eyeglass 1 comprises photic zone 2 and shading region 3, and after putting on contact lens, described shading region 3 covers a part for pupil 4, and described photic zone 2 covers another part of pupil 4.
Image-forming principle is described as follows.
as Fig. 7shown in, as everyone knows, the structure of human eye is just as a camera.Cornea 7, room, front and back 8, pupil 4, crystalline lens 10 and vitreum 11 form the optical system of this " camera ", and medical science is referred to as " dioptric system ".Wherein, cornea 7 and crystalline lens 10 are this system " camera lens " parts, and pupil 4 is then this system " aperture " part.The perfect combination of dioptric system each several part makes the light entering intraocular form an image clearly.Retina 12 is the photosensitive systems of this " camera "; Choroid and sclera 9 form the camera bellows of this " camera ".
as Fig. 8shown in, according to the ultimate principle of optics and the application practice of camera, in the front and back of focus, light is from gathering diffusion, and the image (focus) from circular light spot to luminous point of point, is diffused into circular light spot then again.The circular light spot of this focus front and back is called blur circle.Because human eye retina's resolving power is limited, when blur circle diameter is less than the resolution characteristic of human eye, what still look under naked eyes is luminous point, and now human eye still feels that image is clearly.At this moment, can be called as by the maximum blur circle that naked eyes are considered as a point and allow blur circle (Permissible circle of confusion, δ).Usually, allow that the human eye limiting angle of resolution ε that blur circle is corresponding represents, normal eye's limiting angle of resolution ε is 1 ＇ ~ 2 ＇.Visible, have a segment limit in the front and back of object of regard (focusing), the point within the scope of this on scenery on the retina imaging, all in the limited range of allowing blur circle, therefore, is all considered as picture point clearly by naked eyes.Scope before and after this section of object of regard (focusing) is referred to as the depth of field (Depth of field, Δ).Now, before and after focus, respectively there is one allow blur circle, allow that the distance between blur circle is referred to as depth of focus for these two.
Depth of field formula is as follows.
Distant view is to the distance P of eyes
1for
Distant view is to the distance P of eyes
2for
Correspondingly, distant view depth delta
1for
Close shot depth delta
2for
Total imaging space degree of depth, namely depth of field Δ is
In formula
ε, the limiting angle of human eye, normal eye's limiting angle of resolution ε is 1 ＇ ~ 2 ＇ (being about 0.00029 ~ 0.00058rad);
D, pupil diameter;
P, focal plane (scenery position);
Δ
1, the front depth of field;
Δ
2, the rear depth of field;
Δ, the depth of field.
From depth of field formula and
fig. 9in can find out, the depth of field with pupil diameter, focusing from difference change.In theory, focal plane is far away, and the depth of field is larger; Focal plane is nearer, and the depth of field is less; Pupil is less, and the depth of field is larger; Pupil is less, and the depth of field is larger.
Present embodiment comprises photic zone and shading region owing to have employed described eyeglass, after putting on contact lens, described shading region covers a part for pupil, described photic zone covers the technological means of another part of pupil, so, this contact lens (can comprise the convex lens correcting long sight at the common contact lens of prior art, the concavees lens of myopia correction, plano lens is cosmetically semitransparent mirror or nontransparent mirror even) basis on increase the depth of field further, its near vision can be improved under the prerequisite not affecting wearer's distant vision, increase the spatial depth scope that people can see clearly, being conducive to object of regard is in the spatial dimension that people can see clearly, be conducive to people and see object of regard clearly, especially in-plant object of regard, more being conducive to the longer object of regard of anterior-posterior length all falls within the scope of the spatial depth that people can see clearly, be conducive to people and see the whole of object of regard simultaneously clearly.Again owing to have employed the technological means of contact lens, so, obviously can not affect the visual field of wearer, can not produce at the moment block sense (muscae genetic vision); The scene seen can be made more clear; The malaise symptoms such as ghost image and spinning sensation can not be produced; The eyes of wearer can be made to keep attractive in appearance.
One as present embodiment is improved,
as Fig. 1with
fig. 4shown in, described photic zone 2 is positioned at the central authorities of described eyeglass 1, and described shading region 3 is looped around photic zone 2 around, and the maximum radial dimension of described photic zone 2 is less than the diameter of pupil 4.Can certainly be
as Fig. 2with
fig. 3, the maximum radial dimension of described photic zone 2 is greater than the diameter of pupil 4 and the smallest radial size of described photic zone 2 is less than the diameter of pupil 4, and the outer peripheral smallest radial size in described shading region 3 is greater than the diameter of pupil 4.
Present embodiment is positioned at the central authorities of described eyeglass owing to have employed described photic zone, described shading region is looped around around photic zone, the maximum radial dimension of described photic zone is less than the diameter of pupil, or, the maximum radial dimension of described photic zone is greater than the diameter of pupil and the smallest radial size of described photic zone is less than the diameter of pupil, the outer peripheral smallest radial size in described shading region is greater than the technological means of the diameter of pupil, so, effectively can block the light away from the optical axis, the sharpness of image can be improved further.
Further improve as present embodiment,
as Fig. 1with
fig. 4shown in, described photic zone 2 is circular, oval, also can be polygon, and the geometric center of described photic zone 2 corresponds in pupil region.The diameter of described circular photic zone 2 is less than the diameter of pupil 4.The major axis of described oval photic zone 2 is less than the diameter of pupil 4.Also can be that the major axis of described oval photic zone 2 is greater than the diameter of pupil 4 and the minor axis of described oval photic zone 2 is less than the diameter of pupil 4.The polygon photic zone 2 that described polygon photic zone 2 is triangle photic zone 2, square photic zone 2, rectangle photic zone 2 or limit number are greater than four.The inscribed circle diameter of described triangle photic zone 2 is less than the diameter of pupil 4.The inscribed circle diameter of described square photic zone is less than the diameter of pupil 4.Incircle (namely maximum in the rectangle circle) diameter of described rectangle photic zone 2 is less than the diameter of pupil 4.Incircle (namely limit number is greater than circle maximum in the polygon of the four) diameter that described limit number is greater than the polygon photic zone 2 of four is less than the diameter of pupil 4.Described shading region 3 is annular, and the external diameter of described shading region 3 is greater than the diameter of pupil 4.
Present embodiment is owing to have employed described photic zone for circular, oval or polygon, and the geometric center of described photic zone corresponds in pupil region; The diameter of described circular photic zone is less than the diameter of pupil; The major axis of described oval photic zone is less than the diameter of pupil, or the major axis of described oval photic zone is greater than the diameter of pupil and the minor axis of described oval photic zone is less than the diameter of pupil; The polygon photic zone that described polygon photic zone is triangle photic zone, square photic zone, rectangle photic zone or limit number are greater than four; The inscribed circle diameter of described triangle photic zone is less than the diameter of pupil; The inscribed circle diameter of described square photic zone is less than the diameter of pupil; The inscribed circle diameter of described rectangle photic zone is less than the diameter of pupil; The inscribed circle diameter that described limit number is greater than the polygon photic zone of four is less than the diameter of pupil; Described shading region is annular, and the external diameter of described shading region is greater than the technological means of the diameter of pupil, so, multiple contact lens can be produced according to the demand of different client.
Further improve as present embodiment,
as Fig. 1with
fig. 4shown in, described eyeglass 1 has multiple, and photic zone 2 radial dimension of multiple described eyeglass 1 is all not identical.
Present embodiment has multiple owing to have employed described eyeglass, the technological means that the photic zone radial dimension of multiple described eyeglass is all not identical, so, optometrist can select the eyeglass of corresponding aperture specification according to the pupil diameter of glasses wearer, or, tried on the eyeglass of different aperture specification by presbyopia patient to select the lens prescriptions of applicable oneself requirement.
Also further improve as present embodiment,
as Fig. 1with
fig. 4shown in, the maximum radial dimension of photic zone 2 is 4.5mm, and the smallest radial of photic zone 2 is of a size of 0.01mm.
Present embodiment due to the maximum radial dimension that have employed photic zone be 4.5mm, the smallest radial of photic zone is of a size of the technological means of 0.01mm, so client can wear most suitable contact lens according to different condition choosing, is conducive to applying of contact lens.
Further improve again as present embodiment,
as Fig. 1with
fig. 4shown in, photic zone 2 radial dimension of multiple described eyeglass 1 reduces from big to small successively equably.Certainly, also can be that photic zone 2 area of multiple described eyeglass 1 reduces from big to small successively equably.
Present embodiment reduces from big to small successively equably due to the photic zone radial dimension that have employed multiple described eyeglass, or, the technological means that the photic zone area of multiple described eyeglass reduces from big to small successively equably, so, different contact lenss can be selected according to the State Science of different users's eyes.
Further improve as present embodiment,
as Fig. 1with
fig. 4shown in, described contact lens 1 has one, and this contact lens 1 to be arranged in pairs or groups a common contact lens conbined usage at Second eye.Certainly, also can be that described contact lens has one, this contact lens be arranged in pairs or groups a framework mirror conbined usage, and an eyeglass of described framework mirror is plano lens or is removed by an eyeglass of described framework mirror.Can also be that described contact lens has two, be respectively two contact lenss of the present invention of different size, be respectively used to bilateral eye.
Present embodiment has one owing to have employed described contact lens, and this contact lens to be arranged in pairs or groups a common contact lens conbined usage at Second eye; Or described contact lens has one, this contact lens is arranged in pairs or groups a framework mirror conbined usage, and an eyeglass of described framework mirror is plano lens, or, an eyeglass of described framework mirror is removed; Or, described contact lens has two, is respectively two described contact lenss of different size, is respectively used to the technological means of bilateral eye, so, the common contact lens of contact lens of the present invention and prior art or framework mirror can be combined use, or the described contact lens of two different sizes combines use, gives full play to the advantage of respective glasses, learn from other's strong points to offset one's weaknesses, cooperatively interact, interact, improve visual effect and quality further.
Further improve again as present embodiment,
as Fig. 1with
fig. 1shown in 0, described photic zone 2 is open-works, also can be the lens be made up of transparent material.Described lens are simple lens or lens combination, described simple lens is zero degree goggles, positivity concave-sphere, negativity concave-sphere, positivity post mirror, negativity post mirror, prism, multi-focus lens, and described lens combination is by the lens combination superposed successively before and after at least two described simple lenses and/or coplanar is in parallel arranged to form.
The lens that present embodiment is open-work owing to have employed described photic zone or is made up of transparent material, described lens are simple lens or lens combination, described simple lens is zero degree goggles, positivity concave-sphere, negativity concave-sphere, positivity post mirror, negativity post mirror, prism, multi-focus lens, described lens combination is by the technological means of lens combination that is in parallel arranged to form of superposition and/or coplanar successively before and after at least two described simple lenses, so, different types of contact lens can be produced according to the different demands of user, not only be applicable to farsighted person, also A nearsighted person is applicable to, the user being also applicable to twenty-twenty vision improves eyesight further, thus improve the adaptability of contact lens.
Also further improve as present embodiment,
as Fig. 1shown in, described shading region 3 is non-photic zone or semi-opaque region, and described alternatively non-transparent district is made up of non-transparent material, and described semi-opaque region is made up of trnaslucent materials.Also can be
as Fig. 5with
fig. 6shown in, described eyeglass 1 is made up of transparent material, and described alternatively non-transparent district contains or is attached with non-transparent material, and described semi-opaque region is contained or is attached with trnaslucent materials; Can also be that described eyeglass 1 is made up of non-transparent material or trnaslucent materials, described photic zone 2 be open-works.
Present embodiment is owing to have employed Shi Fei photic zone, described shading region or semi-opaque region, and described alternatively non-transparent district is made up of non-transparent material, and described semi-opaque region is made up of trnaslucent materials; Or described eyeglass is made up of transparent material, described alternatively non-transparent district contains or is attached with non-transparent material, and described semi-opaque region is contained or is attached with trnaslucent materials; Or described eyeglass is made up of non-transparent material or trnaslucent materials, described photic zone is the technological means of open-work, so, substantially increase raw-material alternative, be conducive to reducing production cost, be conducive to the adaptability improving contact lens.
Further improve again as present embodiment,
as Fig. 1with
fig. 7shown in, the outward flange of described shading region 3 is close, the edge that meets or exceeds cornea 7.
Present embodiment is because the outward flange that have employed described shading region is close, meet or exceed the technological means at the edge of cornea, so, the contact lens with different size shading region can be made into, be conducive to the demand meeting different crowd, improve the adaptability of contact lens.
Further improve again as present embodiment,
as Fig. 1with
fig. 7shown in, the making of described contact lens 1 adopt existing soft/hard corneal contact lens sheet manufacture craft and contact lense color printing technology, described shading region 3 is made into the shading region of the shading region of shades of colour, the shading region of various decorative pattern, the shading region of various shape or various radial dimension, or, the shading region of mutually being combined by shades of colour, various decorative pattern, various shape, various radial dimension.
Present embodiment because the making that have employed described contact lens adopts existing soft/technological means of hard corneal contact lens sheet manufacture craft and contact lense color printing technology, so, greatly can reduce the scientific research expenditure use of Corneal Contact mirror production method of the present invention, greatly reduce production cost.The shading region of the shading region of shades of colour, the shading region of various decorative pattern, the shading region of various shape or various radial dimension is made into again owing to have employed described shading region, or, the technological means of the shading region of mutually being combined by shades of colour, various decorative pattern, various shape, various radial dimension, so, not only substantially increase visual effect, and, also substantially increase cosmetic result, be conducive to the demand meeting different crowd, improve the adaptability of contact lens.
Further improve again as present embodiment,
as Fig. 1with
fig. 7shown in, the outer convex surface of described eyeglass 1 is shiny surface, and the inner concave periphery of described eyeglass 1 is Non-smooth surface face or frosting; Or, the inner concave of described eyeglass 1 local or be all coated with bonding agent or be attached with jointing material; Or the inner concave periphery of described eyeglass 1 is frosting and is coated with bonding agent or is attached with jointing material; Or outer convex surface and the inner concave of described eyeglass 1 are shiny surface, and the periphery of eyeglass exists tissue fixation device, described tissue fixation device is the fixing hook of tissue, organizes geometrical clamp, organizes fixing sucking disk or organize set collar.
Present embodiment due to the outer convex surface that have employed described eyeglass be shiny surface, the inner concave periphery of described eyeglass is Non-smooth surface face or frosting; Or, the inner concave of described eyeglass local or be all coated with bonding agent or be attached with jointing material; Or the inner concave periphery of described eyeglass is frosting and is coated with bonding agent or is attached with jointing material; Or the outer convex surface of described eyeglass and inner concave are shiny surface, there is tissue fixation device in the periphery of eyeglass, described tissue fixation device is the fixing hook of tissue, organize geometrical clamp, organize fixing sucking disk or organize the technological means of set collar, so, greatly can reduce the relative movement between human eye and contact lens, avoid the shading region of contact lens to cover the pupil of human eye completely.
Claims (10)
1. a contact lens, comprise eyeglass (1), it is characterized in that: described eyeglass (1) comprises photic zone (2) and shading region (3), after putting on contact lens, described shading region (3) covers a part for pupil (4), and described photic zone (2) cover another part of pupil (4).
2. contact lens according to claim 1, it is characterized in that: described photic zone (2) are positioned at the central authorities of described eyeglass (1), described shading region (3) is looped around photic zone (2) around, and the maximum radial dimension of described photic zone (2) is less than the diameter of pupil (4); Or, the maximum radial dimension of described photic zone (2) is greater than the diameter of pupil (4) and the smallest radial size of described photic zone (2) is less than the diameter of pupil (4), and described shading region (3) outer peripheral smallest radial size is greater than the diameter of pupil (4).
3. contact lens according to claim 2, is characterized in that: described photic zone (2) are circular, oval or polygon, and the geometric center of described photic zone (2) corresponds in pupil region; The diameter of described circular photic zone (2) is less than the diameter of pupil (4); The major axis of described oval photic zone (2) is less than the diameter of pupil (4), or the major axis of described oval photic zone (2) is greater than the diameter of pupil (4) and the minor axis of described oval photic zone (2) is less than the diameter of pupil (4); The polygon photic zone (2) that described polygon photic zone (2) is triangle photic zone (2), square photic zone (2), rectangle photic zone (2) or limit number are greater than four; The inscribed circle diameter of described triangle photic zone (2) is less than the diameter of pupil (4); The inscribed circle diameter of described square photic zone is less than the diameter of pupil (4); The inscribed circle diameter of described rectangle photic zone (2) is less than the diameter of pupil (4); The inscribed circle diameter that described limit number is greater than the polygon photic zone (2) of four is less than the diameter of pupil (4); Described shading region (3) is annular, and the external diameter of described shading region (3) is greater than the diameter of pupil (4).
4. contact lens according to claim 2, is characterized in that: described eyeglass (1) has multiple, and photic zone (2) radial dimension of multiple described eyeglass (1) is all not identical.
5. contact lens according to claim 4, is characterized in that: wherein, and the maximum radial dimension of photic zone (2) is 4.5mm, and the smallest radial of photic zone (2) is of a size of 0.01mm.
6. contact lens according to claim 4, it is characterized in that: photic zone (2) radial dimension of multiple described eyeglass (1) reduces from big to small successively equably, or photic zone (2) area of multiple described eyeglass (1) reduces from big to small successively equably.
7. contact lens according to claim 1, is characterized in that: described contact lens has one, and this contact lens to be arranged in pairs or groups a common contact lens conbined usage at Second eye; Or described contact lens has one, this contact lens is arranged in pairs or groups a framework mirror conbined usage, and an eyeglass of described framework mirror is plano lens, or, an eyeglass of described framework mirror is removed; Or described contact lens has two, be respectively two described contact lenss of different size, be respectively used to bilateral eye.
8. contact lens according to claim 1, it is characterized in that: the lens that described photic zone (2) are open-work or are made up of transparent material, described lens are simple lens or lens combination, described simple lens is zero degree goggles, positivity concave-sphere, negativity concave-sphere, positivity post mirror, negativity post mirror, prism, multi-focus lens, and described lens combination is by the lens combination superposed successively before and after at least two described simple lenses and/or coplanar is in parallel arranged to form.
9. contact lens according to claim 1, is characterized in that: described shading region (3) are non-photic zone or semi-opaque region, and described alternatively non-transparent district is made up of non-transparent material, and described semi-opaque region is made up of trnaslucent materials; Or described eyeglass (1) is made up of transparent material, described alternatively non-transparent district contains or is attached with non-transparent material, and described semi-opaque region is contained or is attached with trnaslucent materials; Or described eyeglass (1) is made up of non-transparent material or trnaslucent materials, described photic zone (2) are open-works.
10. contact lens according to claim 1, is characterized in that: the outer convex surface of described eyeglass (1) is shiny surface, and the inner concave periphery of described eyeglass (1) is Non-smooth surface face or frosting; Or, the inner concave of described eyeglass (1) local or be all coated with bonding agent or be attached with jointing material; Or the inner concave periphery of described eyeglass (1) is frosting and is coated with bonding agent or is attached with jointing material; Or outer convex surface and the inner concave of described eyeglass (1) are shiny surface, and the periphery of eyeglass exists tissue fixation device, described tissue fixation device is the fixing hook of tissue, organizes geometrical clamp, organizes fixing sucking disk or organize set collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228750.9A CN104849875A (en) | 2015-05-06 | 2015-05-06 | Corneal contact lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228750.9A CN104849875A (en) | 2015-05-06 | 2015-05-06 | Corneal contact lens |
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| Publication Number | Publication Date |
|---|---|
| CN104849875A true CN104849875A (en) | 2015-08-19 |
Family
ID=53849639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510228750.9A Pending CN104849875A (en) | 2015-05-06 | 2015-05-06 | Corneal contact lens |
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| Country | Link |
|---|---|
| CN (1) | CN104849875A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652467A (en) * | 2016-03-03 | 2016-06-08 | 中山大学中山眼科中心 | Therapeutic presbyopia correction cornea contact lens |
| CN107065182A (en) * | 2017-03-08 | 2017-08-18 | 上海乐蜗信息科技有限公司 | A kind of virtual reality optical lens and virtual reality device |
| CN107728338A (en) * | 2017-12-06 | 2018-02-23 | 爱博诺德（北京）医疗科技有限公司 | Ortho-K |
| US11662606B2 (en) | 2017-12-06 | 2023-05-30 | Eyebright Medical Technology (Beijing) Co., Ltd. | Orthokeratology lens and method for making orthokeratology lenses |
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| CN2331982Y (en) * | 1996-07-31 | 1999-08-04 | 崔浩 | Adjustable ring-shading contact lenses |
| CN201417349Y (en) * | 2009-07-06 | 2010-03-03 | 崔浩 | Ring covering type corneal contact lens capable of changing diameter of transparent area under different intensity rays |
| CN102448404A (en) * | 2009-08-13 | 2012-05-09 | 阿库福库斯公司 | Masked intraocular implants and lenses |
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| JPH031857A (en) * | 1989-05-31 | 1991-01-08 | New Eeji:Kk | Visual power correcting instrument |
| CN2331982Y (en) * | 1996-07-31 | 1999-08-04 | 崔浩 | Adjustable ring-shading contact lenses |
| CN201417349Y (en) * | 2009-07-06 | 2010-03-03 | 崔浩 | Ring covering type corneal contact lens capable of changing diameter of transparent area under different intensity rays |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652467A (en) * | 2016-03-03 | 2016-06-08 | 中山大学中山眼科中心 | Therapeutic presbyopia correction cornea contact lens |
| CN107065182A (en) * | 2017-03-08 | 2017-08-18 | 上海乐蜗信息科技有限公司 | A kind of virtual reality optical lens and virtual reality device |
| CN107728338A (en) * | 2017-12-06 | 2018-02-23 | 爱博诺德（北京）医疗科技有限公司 | Ortho-K |
| US11662606B2 (en) | 2017-12-06 | 2023-05-30 | Eyebright Medical Technology (Beijing) Co., Ltd. | Orthokeratology lens and method for making orthokeratology lenses |
| CN107728338B (en) * | 2017-12-06 | 2024-01-26 | 爱博诺德(北京)医疗科技股份有限公司 | Cornea shaping mirror |
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Application publication date: 20150819 |