CN213069386U

CN213069386U - Invisible bifocal lens

Info

Publication number: CN213069386U
Application number: CN202021897298.8U
Authority: CN
Inventors: 路垚
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-04-27
Anticipated expiration: 2030-09-03

Abstract

A contact double-light lens relates to the technical field of contact lenses. The convex spherical surface, the excircle, the glazing area and the lower light area form an integrated lens, the excircle is arranged on the periphery of the convex spherical surface, the glazing area is arranged at the upper end of the lower light area, the radius of the curved arcs of the glazing area and the lower light area is the same, the circle center connecting line of the two arc lines of the arc surface of the upper light area and the arc surface of the lower light area is formed by rotating a rotation center, and the outer surface of the convex spherical surface is an outwards convex spherical surface or a spherical ring surface. The utility model discloses beneficial effect does: the lens is formed by combining arc surfaces with the same radius, the appearance cannot see the combination line of an upper light area and a lower light area, the phenomenon that the middle of the lens is suddenly protruded is avoided, the lens is almost not different from the common lens in appearance, no strange other feeling is generated, the attractiveness is not influenced, and the problems of image jump and image mutation do not exist at the channel connection part of the upper light area and the lower light area.

Description

Invisible bifocal lens

Technical Field

The utility model relates to a contact lens technical field, concretely relates to two optical lenses of contact.

Background

There are many bifocal glasses products suitable for seeing far and near in the market at present, some are to increase a round convex lens on the external surface of the myopic lens, this bifocal lens has obvious boundary line and a prominent bump in the upper and lower light area; some lenses are added with a convex lens with a flat top on the upper surface, and the appearance of the lenses looks like obvious convex ridge lines, so that the convex lenses are obviously embedded on the surfaces of the lenses; some lenses are made into an upper half and a lower half combined integrated lenses with different myopia degrees in order to pursue a large visual field, and a horizontal line is arranged in the middle of the combined integrated lenses; some glasses have two split lenses with different myopia degrees on the upper part and the lower part spliced in a glasses frame, and a horizontal splicing straight seam is arranged in the middle; some lenses with myopia degree on the upper surface and combined myopia lenses with myopia and prism on the lower surface are spliced in a spectacle frame, and a horizontal splicing straight seam is arranged in the middle. The bifocal lenses are seen far above and near below, have obvious boundary lines, are not beautiful enough in appearance, have a strange feeling compared with common glasses, are not willing to be worn in formal occasions, and therefore influence the self-confidence of a wearer. The glasses special for going out need to be worn additionally for replacement and use, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a two optical lens of stealthy, solve the problem that proposes in the above-mentioned background art, the utility model discloses the boundary line in two light areas can not obviously be seen on the surface, and the outward appearance is pleasing to the eye, is fit for seeing the automatic switch-over far away and near, is applicable to student, teenagers prevention and treatment myopia, also is fit for young and middle-aged and old person and wears, conveniently sees near far away, has great market spreading value.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the lens comprises a convex spherical surface, an excircle, an upper light area, a lower light area, a first transition area, a second transition area and a channel connecting line, wherein the convex spherical surface, the excircle, the upper light area and the lower light area form an integral lens, the excircle is arranged on the periphery of the convex spherical surface, the upper light area is arranged at the upper end of the lower light area, the arc radii of the upper light area and the lower light area are the same, the arc surface of the upper light area and the arc surface of the lower light area are connected to form the channel connecting line, the outer surface of the convex spherical surface is an outwards convex spherical surface or a spherical annular surface, the inner surface of the convex spherical surface is formed by an upper arc surface and a lower arc surface which are not obviously inwards concave, the inner surface of the convex spherical surface is formed by rotating around the connecting line of the circle centers of the two semi-circular arcs by the radius R1 and the semi-arc by the circle center of the radius R2, and the upper light area and the lower light area on, the right upper light area and the lower light area of the channel connecting line form a second transition area, and the first transition area and the second transition area are connected transition areas of the left upper light area and the right upper light area and the lower light area.

The circle centers formed by the upper light area, the lower light area, the first transition area, the second transition area and the channel connecting line are equal to or between 2-5 mm from the spherical surface S to the central point O.

The radius of the curved arc of the upper light area is R1, the radius of the curved arc of the lower light area is R2, the radius of the curved arc from the inner surface of the lens to the convex spherical surface is R3, and the double-optical lens is one of the following lenses or the combination thereof: when R1< R2< R3, the contact bifocal lens is a full myopia bifocal lens; when R1 is less than R3 and R2 is approximately equal to R3, the contact double-light lens is a contact double-light lens formed by combining a concave lens in an upper light area and a plano-optic lens in a lower light area; when R2< R3< R1, the contact double-light lens is a double-light lens of a concave lens in an upper light area and a convex lens in a lower light area; and when R1< R2< R3, the contact double-lens is a full-far-vision lens.

The invisible double-light lens can be molded by adopting methods such as precision machining center processing molding, injection molding of an injection molding machine, resin casting molding and the like.

The contact double-light lens is made by combining a spherical surface technology or an aspherical surface technology with an aspherical surface large-visual-field lens.

The shapes of the upper light area and the lower light area of the invisible double-light lens can be reversed from top to bottom, and the arc-bending radiuses of the upper light area and the lower light area are always the same.

The utility model discloses a theory of operation: the object image is displayed on the retina through the refraction of the double-optical lens structure to light, the zooming function of eyeballs is replaced to a certain extent, and objects with different distances are clearly displayed on the retina of people.

After the technical scheme is adopted, the utility model discloses beneficial effect does: the lens is formed by combining arc surfaces with the same radius, the outer surface can not see a combination line of an upper light area and a lower light area obviously, the phenomenon of sudden protrusion in the middle of the lens is avoided, the lens is almost not different from the common lens in appearance, no strange other feeling is generated, the attractiveness is not influenced, and meanwhile, the channel connection part of the upper light area and the lower light area has no image jump and image mutation problems.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals: convex spherical surface 1, excircle 2, go up light zone 3, light zone 4 down, first transition zone 5, second transition zone 6, passageway connecting wire 7.

Detailed Description

Referring to fig. 1, the technical solution adopted by the present embodiment is: the lens comprises a convex spherical surface 1, an excircle 2, an upper light area 3, a lower light area 4, a first transition area 5, a second transition area 6 and a channel connecting line 7, wherein the convex spherical surface 1, the excircle 2, the upper light area 3 and the lower light area 4 form an integral lens, the excircle 2 is arranged on the periphery of the convex spherical surface 1, the upper light area 3 is arranged at the upper end of the lower light area 4, the arc radii of the upper light area 3 and the lower light area 4 are the same, the arc surface of the upper light area 3 and the arc surface of the lower light area 4 are connected to form the channel connecting line 7, the outer surface of the convex spherical surface 1 is an outwards convex spherical surface or a spherical ring surface, the inner surface of the convex spherical surface 1 is composed of an upper arc surface and a lower arc surface which are not obviously inwards concave, the inner surface of the convex spherical surface 1 is formed by rotating the connecting line of a semicircle with a radius R1 and a semicircle with a radius R2 around the centers of two semicircle lines as a, the left upper light area 3 and the lower light area 4 of the channel connecting line 7 are formed with a first transition area 5, the right upper light area 3 and the lower light area 4 of the channel connecting line 7 are formed with a second transition area 6, and the first transition area 5 and the second transition area 6 are transition areas formed by connecting the left upper light area 3 and the lower light area 4.

Furthermore, the circle centers formed by the upper light area 3, the lower light area 4, the first transition area 5, the second transition area 6 and the channel connecting line 7 are equal to or between 2-5 mm from the outer spherical surface S to the center O point.

Further, the curvature radius of the upper light zone 3 is R1, the curvature radius of the lower light zone 4 is R2, the curvature radius from the inner surface of the lens to the convex spherical surface 1 is R3, and the dual-optical lens is one of or a combination of the following: when R1< R2< R3, the contact bifocal lens is a full myopia bifocal lens; when R1 is less than R3 and R2 is approximately equal to R3, the contact double-light lens is a contact double-light lens formed by combining a concave lens in an upper light area and a plano-optic lens in a lower light area; when R2< R3< R1, the contact double-light lens is a double-light lens of a concave lens in an upper light area and a convex lens in a lower light area; and when R1< R2< R3, the contact double-lens is a full-far-vision lens.

Furthermore, the contact double-light lens can be molded by adopting methods such as precision machining center processing molding, injection molding of an injection molding machine, resin casting molding and the like.

Furthermore, the contact bifocal lens is manufactured by combining a spherical surface technology or an aspherical surface technology with an aspherical surface large-field-of-view lens.

Furthermore, the shapes of the upper light area and the lower light area of the invisible double-light lens can be reversed from top to bottom, and the curved arc radiuses of the upper light area and the lower light area are always the same.

Further, the manufacturing method of the convex spherical surface 1 comprises the following steps: the lens is molded by three methods of precise processing center processing molding, injection molding machine injection molding, resin casting molding and the like, wherein the injection molding machine injection molding is characterized in that a lens mold mainly comprises a mold frame, a mold core and a mold cavity, the shape of the outer surface of the mold core is matched with the inner surface of the lens, the shape of the inner surface contour of the mold cavity is matched with the outer surface of the lens and jointly forms a complete space of the lens, the resin casting molding is characterized in that the lens mold mainly comprises a glass mold and a sealing ring or an adhesive tape, the shape of the outer surface of the mold is matched with the inner surface of the lens, and the shape of the inner surface contour of the mold is matched with the outer surface of the lens; polishing the surface of the lens; soaking and hardening the surface of the lens, sequentially carrying out alkali treatment, rinsing, water cutting, drying, cooling, soaking type hardening, preparation drying and the like on the lens, curing the adopted hardening liquid mainly by organic silicon to form a transparent film, increasing the hardness of the surface of the lens, enhancing the adhesive force of a coating film layer and the surface of a substrate, and carrying out hardening inspection and curing; and fourthly, the surface of the lens is subjected to vacuum coating, the chuck filled with the lens is placed into a coating machine for coating, the coating aims to reduce the reflection of light rays, but no reflected light rays can be realized, the surface of the lens always has residual color, namely the color of a film layer, and the coated lens is radiation-proof, anti-static, scratch-resistant, anti-pollution and easier to clean. The lens with composite functions is formed.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A contact bifocal lens, comprising: it includes convex sphere (1), excircle (2), goes up light district (3), light zone (4), first transition district (5), second transition district (6), passageway connecting wire (7), convex sphere (1), excircle (2), go up light district (3), down light district (4) constitute integrative lens, the periphery of convex sphere (1) be provided with excircle (2), go up light district (3) and set up the upper end in light zone (4) down, go up light district (3) and the radius of curvature of light zone (4) the same down, the arc surface of going up light district (3) and the arc surface of light zone (4) down be connected and form passageway connecting wire (7), the surface of convex sphere (1) be outside bellied sphere or spherical ring face, the internal surface of convex sphere (1) constitute by two upper and lower not obvious inwards sunken arc surfaces, the internal surface of convex sphere (1) be by radius R1's semicircle curve and radius R2's semicircle curve around two The circle center connecting line of the semicircular arc line is formed by rotating a rotation center, a first transition region (5) is formed between the left upper light region (3) and the lower light region (4) of the channel connecting line (7), a second transition region (6) is formed between the right upper light region (3) and the lower light region (4) of the channel connecting line (7), and the first transition region (5) and the second transition region (6) are connected with the transition region between the left upper light region (3) and the lower light region (4).

2. A contact bifocal lens according to claim 1, wherein: the circle center formed by the upper light area (3), the lower light area (4), the first transition area (5), the second transition area (6) and the channel connecting line (7) is equal to or between the upper and lower 2-5 mm from the spherical surface S to the central point O.

3. A contact bifocal lens according to claim 1, wherein: the radius of the curved arc of the upper light area (3) is R1, the radius of the curved arc of the lower light area (4) is R2, the radius of the curved arc from the inner surface of the lens to the convex spherical surface (1) is R3, and the double-light lens is one of or the combination of the following: when R1< R2< R3, the contact bifocal lens is a full myopia bifocal lens; when R1 is less than R3 and R2 is approximately equal to R3, the contact double-light lens is a contact double-light lens formed by combining a concave lens in an upper light area and a plano-optic lens in a lower light area; when R2< R3< R1, the contact double-light lens is a double-light lens of a concave lens in an upper light area and a convex lens in a lower light area; and when R1< R2< R3, the contact double-lens is a full-far-vision lens.

4. A contact bifocal lens according to claim 1, wherein: the invisible double-light lens can be molded by adopting methods such as precision machining center processing molding, injection molding of an injection molding machine, resin casting molding and the like.

5. A contact bifocal lens according to claim 1, wherein: the contact double-light lens is made by combining a spherical surface technology or an aspherical surface technology with an aspherical surface large-visual-field lens.

6. A contact bifocal lens according to claim 1, wherein: the shapes of the upper light area and the lower light area of the invisible double-light lens can be reversed from top to bottom, and the arc-bending radiuses of the upper light area and the lower light area are always the same.