CN207992593U - colored contact lenses - Google Patents

Abstract

Colored contact lenses mainly have a circular arc sheet eyeglass ontology in the utility model, its area Tu Wen for defining an optics area, surrounding a peripheral region in outside and being configured between the optics area and the peripheral region, and the eyeglass ontology and the nonreentrant surface with relative configuration and a concave surface；Wherein, the eyeglass ontology has relative to the outer layer at the nonreentrant surface, and relative to the internal layer at the concave surface, and the areas Tu Wen have a dyed layer, it is located between the outer layer and the internal layer, the thickness of the outer layer is between 10 μm to 50 μm, it can be ensured that dyed layer is not exposed and do not contacted with the eyeball of wearer or eyelid, is substantially improved and wears safety and comfort level.

Description

Colored contact lenses

Technical field

The utility model is in relation to a kind of colored contact lenses promoting wearing safety and comfort level.

Background technology

In recent years sci-tech product is fast-developing, and numerous 3C Product substantially changes previous lifestyle, intelligent Mobile phone, tablet computer, pen electricity, TV, human eye always returns again to another screen from this screen, and myopia is increasingly becoming one kind The ciril disease of modern, as near-sighted population is promoted, the demand of contact lenses is also promoted therewith.Contact lenses are wide at present The general correction for eyesight, and with the progress of contact lenses manufacturing technology, also begin to the stealth of design different shape or color Glasses, and then have and have both correction and beautiful cornea color-changing lens and the brand-new product birth of color make-up eyeglass, in addition contact lenses material Material development is harvested greatly, functional, comfort level and convenience caused by contact lenses, drive contact lenses market at leader Meeting, contact lenses are no longer to also allow for iridallochrosis outside the special purpose corrected defects of vision or expand iris shape, eyes is allowed to see Get up more beautiful deep, it is also therefore deep to be favored by female consumer.

It is developed from general contact lenses continuous to the cornea change color chips or color make-up eyeglass, process technique for having both correction and beauty Evolution changes, and how effectively to grasp the functionality of correction and makeups, and has both and wear comfort level and safety, and expands its application The target that ranging from major factory makes great efforts at present.And the production method of known colored contact lenses has retroussage and multiple-level stack Mode, but retroussage can allow ink layer to be exposed to the surface of eyeglass, as shown in Figure 1, the ink layer 11 on 10 surface of eyeglass ontology, Thus in wearing or blink, it is easy to allow ink layer 11 to fall off because of the friction of external force contact, and ink layer 11 is because close Surface can allow contact lens surface out-of-flatness, the surface of rough cunning to be also easy that the eyes of wearer is allowed to generate foreign body sensation, and The eyes of wearer will be contacted directly with ink layer 11, and is more prone to fade with eyelid friction during eyes closed and be asked Topic, the potential danger that eyes may be caused impaired, including furious, corneal vascularization or generation allergic reaction etc., have and wear The doubt of safety.

Utility model content

The technical issues of the utility model is solved is hidden in a kind of colour promoting wearing safety and comfort level of offer Shape eyeglass.

Technological means used by the utility model is as described below.

Colored contact lenses mainly have a circular arc sheet eyeglass ontology in the utility model, define an optics area, ring A peripheral region around outside and the areas Tu Wen that are configured between the optics area and the peripheral region, and the eyeglass ontology and have A nonreentrant surface and a concave surface for relative configuration；Wherein, which has relative to the outer layer and phase at the nonreentrant surface For the internal layer at the concave surface, and the areas Tu Wen have a dyed layer, are located between the outer layer and the internal layer, this is outer The thickness of layer is between 10 μm to 50 μm, it can be ensured that dyed layer is not exposed and do not contacted with the eyeball of wearer or eyelid, greatly Width, which is promoted, wears safety and comfort level.

According to above-mentioned technical characteristic, the eyeglass ontology prepares the outer layer first with rotation modulus method, on the inside of the outer layer Printing forms the dyed layer, finally prepares the internal layer with die casting.

According to above-mentioned technical characteristic, the eyeglass ontology is made by glue, silicon glue or super glue.

According to above-mentioned technical characteristic, the eyeglass ontology further comprise anti-blue-light absorbers or anti-UV absorbents or its Combination.

According to above-mentioned technical characteristic, the dyed layer includes cyclic annular figure comprehensively, lines, site, figure, pattern or at least A kind of combination of geometric figure.

According to above-mentioned technical characteristic, the center thickness of the eyeglass ontology is between 60 μm to 150 μm.

Technique effect caused by the utility model：It is outer to be located in this for dyed layer in the colored contact lenses of the utility model Between layer and the internal layer, and the thickness of outer layer is between 10 μm to 50 μm, it can be ensured that dyed layer it is not exposed and not with wearer Eyeball or eyelid contact, do not only reach the effect not faded, solve the decoloration of conventional color contact lens or the uneasinesses such as fade Full doubt is more substantially improved and wears safety and comfort level；Furthermore the eyeglass ontology of the utility model, which makes, utilizes rotation modulus method And die casting, it can be accurately controlled the thickness of outer layer, thickness range is can be controlled between 10 μm to 50 μm.In addition, eyeglass Ontology further comprises anti-blue-light absorbers or anti-UV absorbents or combinations thereof, and the colored contact lenses of the utility model is allowed to remove It, also can be with filtering noxious shortwave blue light or uvioresistant outside color make-up and vision correction function（UV）Effect.

Description of the drawings

Fig. 1 show the structural schematic diagram for practising chromatic colour contact lens.

Fig. 2 show the structural schematic diagram of colored contact lenses in the utility model.

Fig. 3 show the first structure schematic diagram of colored contact lenses manufacturing process in the utility model.

Fig. 4 show the second structural schematic diagram of colored contact lenses manufacturing process in the utility model.

Fig. 5 show the third structural schematic diagram of colored contact lenses manufacturing process in the utility model.

Figure number explanation：

Thickness L1, L2

Eyeglass ontology 10

Ink layer 11

Eyeglass ontology 2

Optics area 201

Peripheral region 202

The areas Tu Wen 203

Nonreentrant surface 21

Concave surface 22

Outer layer 23

Internal layer 24

Dyed layer 25

Semi-finished product 26

Rotating mould 31

First mold 32

First surface 321

Second mold 33

Second surface 331.

Specific implementation mode

Please refer to the structural schematic diagram that Fig. 2 show colored contact lenses in the utility model.First, in the utility model Mainly there is colored contact lenses a circular arc sheet eyeglass ontology 2, the eyeglass ontology 2 to define an optics area 201, around outside One peripheral region 202 and the areas Tu Wen 203 being configured between the optics area 201 and the peripheral region 202, and the eyeglass ontology 2 And with the nonreentrant surface 21 and a concave surface 22 being oppositely disposed.

This case focuses on：The eyeglass ontology 2 has relative to the outer layer 23 at the nonreentrant surface 21, and relative to this An internal layer 24 at concave surface 22, and the areas Tu Wen 203 have an at least dyed layer 25, are located in the outer layer 23 and the internal layer Between 24, the thickness L1 of the outer layer 23 is between 10 μm to 50 μm.

In a preferred embodiment, the eyeglass ontology 2 of the utility model first prepares a rotating mould when making Tool 31, as shown in figure 3, and preparing the material prescription of eyeglass ontology；Wherein, eyeglass ontology 2 is by glue, silicon glue or super glue institute It is made.In more preferable specific embodiment, eyeglass ontology 2 is made of glue, in general the material of glue has polypropylene Acid monomers more specifically may include any known glue composition for example：Ethyl methacrylate (HEMA), methylcrotonic acid Ethyl ester (HPMA), methyl methacrylate (acryl monomer) (Methyl methacrylate-MMA), Glyceryl Methacrylate (GMA) and combinations thereof etc..In most preferably specific embodiment, eyeglass ontology 2 uses 55% high-moisture first The glue of base ethyl acrylate (HEMA) is made, and makes 2 hydrophily higher of eyeglass ontology.

By in the material prescription injection rotating mould 31 of above-mentioned eyeglass ontology, an outer layer 23 is prepared to revolve modulus method.That is, The effect of centrifugal force, gravity and surface tension when being rotated using rotating mould 31 forms smooth film.Wherein, rotation modulus method is utilized It can be accurately controlled the thickness of outer layer 23, thickness range is can be controlled between 10 μm to 50 μm.

Then, the dyed layer 25 is formed then at the 23 inside printing of outer layer, as shown in figure 4, in a preferred specific implementation It in scheme, first prepares the colorant of colorant and uses bat printing (Pad Print) method, the colorant print containing colorant is invested outer 23 inner surface of layer, and an annular patterns are formed, it prepares and completes a semi-finished product 26.Although this specification illustrates and schema is painted Chromatograph 25 includes cyclic annular comprehensive figure in this specification explanation, but the dyed layer 25 can be with having in any technical field Structure known to usual skill (for example, such as combination of site, lines, figure, pattern or at least one geometric figure). In another preferred embodiment, 23 inside printing of outer layer is formed with the dyed layer of plural layer different colours, reaches color Changeable effect.

The internal layer is finally prepared with die casting, as shown in figure 5, preparing one first mold 32 and the second mold 33, first will Above-mentioned semi-finished product 26 are embedded in the first surface (being a concave surface in this embodiment) of the first mold (being master mold in this embodiment) 32 321, the material prescription of above-mentioned eyeglass ontology is reinjected, (is cooperation first surface in this embodiment by tool second surface 331 321 convex surface) the second mold 33 (being male model in this embodiment) slowly molded with the first mold 32 after, then through high temperature High pressure or light reaction (such as irradiating UV) make its solidification, then demould, finished product is made in last rehydration.

The finished products of the utility model colored contact lenses as shown in Fig. 2, eyeglass ontology 2 have relative to above-mentioned first, the The concave surface 22 and nonreentrant surface 21 of two molds, (that is, the center of eyeglass ontology 2 is to convex table by the center thickness L2 of the eyeglass ontology 2 The vertical range of face 21 and concave surface 22) between 60 μm to 150 μm；The dyed layer 25 of eyeglass ontology 2 is located in the outer layer It between 23 and the internal layer 24, makes dyed layer not exposed and is not contacted with the eyeball of wearer or eyelid, achieve the effect that not fade, Color fastness is high；And the thickness L1 of outer layer 23 (that is, dyed layer 25 to the vertical range of nonreentrant surface 21) between 10 μm to 50 μm it Between；The thickness size of its outer layer 23 can be prepared to reach and is accurately controlled by rotation modulus method, it can be ensured that dyed layer is not exposed, is substantially improved Wear safety and comfort level；In more preferable specific embodiment, which further comprises anti-blue-light absorbers Or anti-UV absorbents or combinations thereof, it allows the colored contact lenses of the utility model other than color make-up and vision correction function, also may be used With filtering noxious shortwave blue light or uvioresistant（UV）Effect.

Claims (5)

1. a kind of colored contact lenses mainly have a circular arc sheet eyeglass ontology, one optics area of eyeglass body defining, the ring A peripheral region around outside and the areas Tu Wen that are configured between the optics area and the peripheral region, and the eyeglass ontology and have A nonreentrant surface and a concave surface for relative configuration；It is characterized in that：

The eyeglass ontology has relative to the outer layer at the nonreentrant surface, and relative to the internal layer at the concave surface, and the figure Line area has an at least dyed layer, is located between the inner surface and the internal layer of the outer layer, makes the dyed layer not exposed, should The thickness of outer layer that is, the dyed layer to the nonreentrant surface vertical range between 10 μm to 50 μm, the eyeglass ontology first with Rotation modulus method prepares the outer layer, is printed on the inside of the outer layer and forms the dyed layer, finally prepares the internal layer with die casting.

2. colored contact lenses as described in claim 1, which is characterized in that the eyeglass ontology is by glue, silicon glue or super water Made by glue.

3. colored contact lenses as claimed in claim 2, which is characterized in that the eyeglass ontology further include anti-blue-light absorbers or Anti- UV absorbents or combinations thereof.

4. the colored contact lenses as described in claims 1 to 3 is any, which is characterized in that the dyed layer includes cyclic annular figure comprehensively The combination of shape, lines, site, figure, pattern or at least one geometric figure.

5. the colored contact lenses as described in claims 1 to 3 is any, which is characterized in that the center thickness of the eyeglass ontology is situated between Between 60 μm to 150 μm.