US20230400713A1 - Contact lens - Google Patents

Contact lens Download PDF

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Publication number
US20230400713A1
US20230400713A1 US18/318,738 US202318318738A US2023400713A1 US 20230400713 A1 US20230400713 A1 US 20230400713A1 US 202318318738 A US202318318738 A US 202318318738A US 2023400713 A1 US2023400713 A1 US 2023400713A1
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United States
Prior art keywords
contact lens
thru
circuit structure
positioning slots
quadrant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US18/318,738
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English (en)
Inventor
Yi-Fang Huang
Shih-Siang Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pegavision Corp
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Pegavision Corp
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Publication date
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Priority to US18/318,738 priority Critical patent/US20230400713A1/en
Assigned to PEGAVISION CORPORATION reassignment PEGAVISION CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUANG, YI-FANG, LIN, SHIH-SIANG
Publication of US20230400713A1 publication Critical patent/US20230400713A1/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C11/00—Non-optical adjuncts; Attachment thereof
    • G02C11/10—Electronic devices other than hearing aids
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • G02B1/043—Contact lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C11/00—Non-optical adjuncts; Attachment thereof
    • 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
    • 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
    • G02C7/047—Contact lens fitting; Contact lenses for orthokeratology; Contact lenses for specially shaped corneae
    • 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
    • G02C7/049—Contact lenses having special fitting or structural features achieved by special materials or material structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00038—Production of contact lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/0074—Production of other optical elements not provided for in B29D11/00009- B29D11/0073
    • B29D11/00807—Producing lenses combined with electronics, e.g. chips
    • B29D11/00817—Producing electro-active lenses or lenses with energy receptors, e.g. batteries or antennas
    • B29D11/00826—Producing electro-active lenses or lenses with energy receptors, e.g. batteries or antennas with energy receptors for wireless energy transmission
    • 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
    • G02C7/046—Contact lenses having an iris pattern

Definitions

  • the present disclosure relates to a contact lens, and more particularly to a smart contact lens.
  • a conventional smart contact lens requires a circuit structure to be embedded therein, but the circuit structure is difficult to be accurately embedded at a specific position of the conventional smart contact lens, so that the conventional smart contact lens is difficult to have high conformity in mass production.
  • the present disclosure provides a contact lens to effectively improve on the issues associated with conventional smart contact lenses.
  • a contact lens which includes a lens body, an electronic component, and a circuit structure.
  • the lens body includes an optical portion and an annular wearing portion that surrounds the optical portion.
  • the annular wearing portion has a layout region being C-shaped and a lower eyelid region that is arranged between two ends of the layout region, and the lens body includes a rear surface and a front surface.
  • the rear surface has a predetermined curvature for being worn on an eye.
  • the front surface is arranged opposite to the rear surface.
  • the electronic component is embedded in the lower eyelid region of the annular wearing portion.
  • the circuit structure is embedded in the annular wearing portion and is connected to the electronic component to establish an electrical connection therebetween.
  • the annular wearing portion has a plurality of positioning slots recessed from at least one of the front surface and the rear surface toward the circuit structure, and a bottom side of each of the positioning slots includes a part of the circuit structure so as to enable the part of the circuit structure to be exposed in an external environment. Moreover, a sum of areas of openings of the positioning slots is less than or equal to 1% of a sum of area of the front surface and area of the rear surface.
  • the annular wearing portion is designed to have the positioning slots for facilitating the high precision positioning of the circuit structure and the electronic component in the manufacturing process of the contact lens, so that the contact lens can have a high conformity in mass production.
  • the positioning slots can be controlled in a specific scope, thereby preventing the structural strength of the contact lens from being affected.
  • the part of the circuit structure is exposed from the corresponding positioning slot for increasing the heat-dissipation efficiency of the circuit structure.
  • FIG. 1 is a schematic perspective view of a contact lens according to a first embodiment of the present disclosure
  • FIG. 2 is a schematic top view of FIG. 1 ;
  • FIG. 3 is a schematic planar view showing the contact lens worn on a user's eye according to a first embodiment of the present disclosure
  • FIG. 4 is a schematic cross-sectional view taken along line IV-IV of FIG. 1 ;
  • FIG. 5 is a schematic enlarged view of part V of FIG. 4 ;
  • FIG. 6 is a schematic cross-sectional view taken along line VI-VI of FIG. 1 ;
  • FIG. 7 is a schematic enlarged view of part VII of FIG. 6 ;
  • FIG. 8 is a schematic cross-sectional view taken along line VIII-VIII of FIG. 1 ;
  • FIG. 9 is a schematic enlarged view of part IX of FIG. 8 ;
  • FIG. 10 is a schematic top view of the contact lens according to a second embodiment of the present disclosure.
  • FIG. 11 is a schematic cross-sectional view taken along line XI-XI of FIG. 10 ;
  • FIG. 12 is a schematic perspective view of the contact lens according to a third embodiment of the present disclosure.
  • FIG. 13 is a schematic top view of FIG. 12 ;
  • FIG. 14 is a schematic cross-sectional view taken along line XIV-XIV of FIG. 12 ;
  • FIG. 15 is a schematic cross-sectional view taken along line XV-XV of FIG. 12 ;
  • FIG. 16 is a schematic enlarged view of part XVI of FIG. 15 .
  • Numbering terms such as “first,” “second” or “third” can be used to describe various components, signals or the like, which are for distinguishing one component/signal from another one only, and are not intended to, nor should be construed to impose any substantive limitations on the components, signals or the like.
  • the present embodiment provides a contact lens 100 which can be a smart contact lens.
  • the contact lens 100 can be worn on an eye 200 of user (as shown in FIG. 3 ) or can be embedded in the eye 300 (not shown in the drawings) according to design requirements.
  • the contact lens 100 in the present embodiment can have a correcting function for a refractive error that includes hyperopia, myopia, astigmatism, presbyopia, or astigmatism-presbyopia; or, the contact lens 100 can be a makeup lens without the correcting function.
  • the contact lens 100 in the present embodiment includes a lens body 1 , an electronic component 2 embedded in the lens body 1 , and a circuit structure 3 that is embedded in the lens body 1 and that is electrically coupled to the electronic component 2 , but the present disclosure is not limited thereto.
  • the contact lens 100 can include only the lens body 1 and the circuit structure 3 , and be provided without the electronic component 2 .
  • the following description describes the structural and connection relationship of each component of the contact lens 100 .
  • the lens body 100 in the present embodiment is formed by solidifying a hydrogel (e.g., p-HEMA) or a silicone hydrogel, but the present disclosure is not limited thereto.
  • the lens body 1 includes an optical portion 11 and an annular wearing portion 12 that surrounds the optical portion 11 .
  • the optical portion 11 can be formed with or without the correcting function for the refractive error according to design requirements. It should be noted that the optical portion 11 of the present embodiment is provided without any component embedded therein, but the optical portion 11 can also be formed to have at least one component embedded therein according to design requirements (e.g., when the contact lens 100 is applied to a digital zoom device) and is not limited by the description of the present embodiment.
  • the optical portion 11 defines a central axis L, and a center of the optical portion 11 and a center of the annular wearing portion 12 are located on the central axis L.
  • the annular wearing portion 12 is connected to an outer edge of the optical portion 11 and is substantially in a circular ring shape, and the electronic component 2 and the circuit structure 3 are embedded in the annular wearing portion 12 .
  • a production manner relevant to the electronic component 2 and the circuit structure 3 embedded in the annular wearing portion 12 (or a manufacturing method of the contact lens 100 ) can be adjusted or changed according to design requirements, but the present disclosure is not limited thereto.
  • the annular wearing portion 12 has a layout region 121 being C-shaped and a lower eyelid region 122 that is arranged between two ends of the layout region 121 .
  • the electronic component 2 is embedded in the lower eyelid region 122 of the annular wearing portion 12 .
  • the lower eyelid region 122 and the electronic component 2 are arranged inside of a lower eyelid 201 of the eye 200 that is less sensitive, thereby effectively reducing a foreign body sensation (FBS) of the user.
  • FBS foreign body sensation
  • (surfaces of) the lens body 1 includes a rear surface 1 b and a front surface 1 a that is arranged opposite to the rear surface 1 b .
  • the rear surface 1 b has a predetermined curvature only relevant to the eye 200 for being worn on (or smoothly attached to) the eye 200 .
  • the front surface 1 a has a viewable surface 11 a corresponding in position to the optical portion 11 and a free curved surface 12 a that corresponds in position to the annular wearing portion 12 .
  • the viewable surface 11 a has a first curvature relevant to an optical design for correcting the refractive error; or, the first curvature of the viewable surface 11 a and the rear surface 1 b can jointly form a structure with no diopter.
  • the first curvature of the viewable surface 11 a is different from a second curvature of the free curved surface 12 a , and a thickness of the annular wearing portion 12 gradually increases in a direction toward the electronic component 2 (or the lower eyelid region 122 ), but the present disclosure is not limited thereto.
  • the first curvature can be substantially equal to the second curvature, and the thickness of the annular wearing portion 12 is substantially uniform.
  • any position of the annular wearing portion 12 of the contact lens 100 can be provided to have at least one of the electronic component 2 embedded therein according to design requirements.
  • two opposite sides of the annular wearing portion 12 in a horizontal direction of the eye 200 can each be provided to have at least one of the electronic component 2 embedded therein, so that the annular wearing portion 12 has a largest thickness in the horizontal direction and gradually becomes thinner in a vertical direction of the eye 200 .
  • the above arrangement of the contact lens 100 can enable the contact lens 100 to receive at least two of the electronic components 2 and to reduce the FBS of the user.
  • the contact lens 100 of the present embodiment is provided with the free curved surface 12 a arranged on the front surface 1 a of the lens body 1 , so that a thickness of the layout region 121 does not need to be based completely on (or be equal to) a thickness of the lower eyelid region 122 for thinning the layout region 121 . Accordingly, an oxygen permeability of the layout region 121 can be effectively increased, and the FBS of the contact lens 100 can be reduced (or improved).
  • the contact lens 100 preferably has at least one of the technical features disclosed in the following paragraphs by adjusting the second curvature of the free curved surface 12 a , but the present disclosure is not limited thereto.
  • the annular wearing portion 12 (e.g., a part of the annular wearing portion 12 corresponding to the electronic component 2 and the circuit structure 3 ) has a largest thickness Tmax located at a part of the annular wearing portion 12 (e.g., the lower eyelid region 122 ) corresponding in position to the electronic component 2 , and also has a smallest thickness Tmin located at a part of the layout region 121 (e.g., a top part of the layout region 121 shown in FIG. 4 ) away from the lower eyelid region 122 .
  • the part of the annular wearing portion 12 of the contact lens 100 having the largest thickness Tmax is located inside of the lower eyelid 201 of the eye 200
  • the part of the annular wearing portion 12 of the contact lens 100 having the smallest thickness Tmin is located inside of the upper eyelid 202 of the eye 200 .
  • the largest thickness Tmax and the smallest thickness Tmin in the present embodiment respectively correspond in position to the lower eyelid 201 and the upper eyelid 202 of the user, but the relationship between the thickness of the contact lens 100 and the eyelids 201 , 202 of the user in the present disclosure is not limited thereto.
  • circuit structure 3 in the lower eyelid region 122 is spaced apart from the rear surface 1 b by a first distance D 122
  • circuit structure 3 in the layout region 121 is spaced apart from the rear surface 1 b by a second distance D 121 that is less than the first distance D 122 .
  • the circuit structure 3 arranged in the lens body 1 can be independently used (not shown in the drawings) or can be cooperated with the electronic component 2 , so that the circuit structure 3 (and the electronic component) can be electrically or physically driven to implement at least one of functions, which include energy reception, wireless signal transmission, digital calculation, sensing and monitoring, pressure application, current release, image projection, optical zoom, and power storage, but the present disclosure is not limited thereto.
  • the circuit structure 3 in the present embodiment includes a carrier 31 and a circuit 32 (e.g., a metallic circuit) formed on the carrier 31 .
  • the circuit 32 is connected to the electronic component 2 to be electrically coupled to each other.
  • the carrier 31 can be shaped to form a predetermined curved structure by being pressed from a mold at a normal temperature or a high temperature, so that the carrier 31 has a fixed curvature that is different from the second curvature, and the fixed curvature is preferably close to the predetermined curvature of the rear surface 1 b (e.g., the fixed curvature is 100% to 110% of the predetermined curvature), but the present disclosure is not limited thereto.
  • the carrier 31 in the present embodiment is a flexible printed circuit board (FPCB) having a thickness within a range from 10 ⁇ m to 300 ⁇ m. Moreover, the thickness of the carrier 31 is preferably within a range from 40 ⁇ m to 80 ⁇ m, and polymer materials of the carrier 31 can include polyimide (PI), liquid-crystal polymer (LCP), polyethylene terephthalate (PET), or poly(ethylene 2,6-naphthalene dicarboxylate) (PEN), but the present disclosure is not limited thereto.
  • FPCB flexible printed circuit board
  • the carrier 31 has a C-shaped segment 311 embedded in the layout region 121 and a connection segment 312 that is embedded in the lower eyelid region 122 .
  • the connection segment 312 is connected in-between two distal ends of the C-shaped segment 311 .
  • the electronic component 2 can be assembled to the connection segment 312 , and the circuit 32 is formed on the C-shaped segment 311 and extends to the connection segment 312 for being electrically coupled to the electronic component 2 .
  • the C-shaped segment 311 has at least one thru-hole 3111 that is fully filled with the lens body 1 .
  • an area of the at least one thru-hole 3111 is 1% to 85% (e.g., preferably 10% to 40%) of an area surrounded by an outer contour of the C-shaped segment 311 , thereby effectively reducing the generation of wrinkles or the stress concentration on the carrier 31 , and further increasing the oxygen permeability of the contact lens 100 by being cooperated with the free curved surface 12 a.
  • the carrier 31 can have a plurality of radial notches 313 recessed from an outer edge thereof toward the central axis L, thereby further reducing the generation of wrinkles or the stress concentration on the carrier 31 .
  • the radial notches 313 in the present embodiment are respectively formed on boundaries between the C-shaped segment 311 and the connection segment 312 , but the present disclosure is not limited thereto.
  • the area of the at least one thru-hole 3111 is 1% to 75% of an area of the annular wearing portion 12 .
  • a quantity of the at least one thru-hole 3111 formed on the C-shaped segment 311 in the present embodiment is more than one, but the present disclosure is not limited thereto.
  • the C-shaped segment 311 of the carrier 31 can be formed without any thru-hole 3111 .
  • the circuit 32 has at least one enclosed loop, and the thru-holes 3111 of the C-shaped segment 311 are arranged in the at least one enclosed loop of the circuit 32 . It should be noted that a quantity of the at least one enclosed loop in the present embodiment is more than one, and the thru-holes 3111 are respectively arranged in the enclosed loops of the circuit 32 , but the present disclosure is not limited thereto.
  • Each of the thru-holes 3111 is curved and has a width that gradually increases from two ends thereof toward a center thereof (e.g., the thru-hole 3111 in the present embodiment is substantially in a crescent shape).
  • any one of the thru-holes 3111 has an inner edge 3112 and an outer edge 3113 , and two ends of the inner edge 3112 are respectively connected to two ends of the outer edge 3113 so as to form the two ends of the thru-hole 3111 .
  • any one of the inner edge 3112 and the outer edge 3113 is in an arced shape, a radius of the inner edge 3112 is less than a radius of the outer edge 3113 , and a center of the inner edge 3112 and a center of the outer edge 3113 are respectively located on two different flat planes perpendicular to the central axis L.
  • each of the thru-holes 3111 in the present embodiment is arranged along the fixed curvature of the carrier 31 and is not located on a flat plane.
  • the central axis L defines an origin point, an X axis, and a Y axis that is perpendicular to the X axis, and the X axis and the Y axis are intersected at the origin point.
  • the contact lens 100 is sequentially divided into a first quadrant Q 1 , a second quadrant Q 2 , a third quadrant Q 3 , and a fourth quadrant Q 4 along a counterclockwise direction with respect to the origin point.
  • the lower eyelid region 122 is arranged in the third quadrant Q 3 and the fourth quadrant Q 4 , the Y axis is substantially a center line of the lower eyelid region 122 , and a central angle 6122 of the lower eyelid region 122 with respect to the origin point is preferably within a range from 30 degrees to 180 degrees.
  • the central angle 6122 can be changed according to design requirements and is not limited by the present embodiment.
  • the thru-holes 3111 are arranged in the first quadrant Q 1 , the second quadrant Q 2 , the third quadrant Q 3 , and the fourth quadrant Q 4 (e.g., four parts of the thru-holes 3111 are respectively arranged in the first quadrant Q 1 , the second quadrant Q 2 , the third quadrant Q 3 , and the fourth quadrant Q 4 ), and an area of any one of the four parts of the thru-holes 3111 is 50% to 150% of an area of another one of the four parts of the thru-holes 3111 .
  • any one of the thru-holes 3111 is arranged across at least two quadrants (e.g., any one of the thru-holes 3111 is arranged in the first quadrant Q 1 and the fourth quadrant Q 4 , or is arranged in the second quadrant Q 2 and the third quadrant Q 3 ), and any one of the thru-holes 3111 can be mirror symmetrical across the X axis, but the present disclosure is not limited thereto.
  • the thru-holes 3111 include at least one first thru-hole 3111 a and at least one second thru-hole 3111 b . Moreover, a quantity of the at least one first thru-hole 3111 a and a quantity of the at least one second thru-hole 3111 b in the present embodiment can each be more than one, but the present disclosure is not limited thereto.
  • the first thru-holes 3111 a are located at an inner side of the second thru-holes 3111 b . In other words, a radius of each of the second thru-holes 3111 b is different from (e.g., greater than) a radius of each of the first thru-holes 3111 a.
  • each of the first thru-holes 3111 a is in an arced shape having a center of circle located on the central axis L, and the first thru-holes 3111 a are spaced apart from each other.
  • Each of the second thru-holes 3111 b is in an arced shape having a center of circle located on the central axis L, and the second thru-holes 3111 b are spaced apart from each other.
  • any one of the first thru-holes 3111 a is located in a region defined by a central angle of the corresponding second thru-hole 3111 b , and a partition between any two of the first thru-holes 3111 a adjacent to each other and a partition between any two of the second thru-holes 3111 b adjacent to each other are not arranged in a same radial direction of the contact lens 100 . As shown in FIG. 2 , FIG. 4 , and FIG.
  • the annular wearing portion 12 has a plurality of positioning slots 123 recessed from at least one of the front surface 1 a and the rear surface 1 b toward the circuit structure 3 , and a bottom side of each of the positioning slots 123 includes a part of the circuit structure 3 so as to enable the part of the circuit structure 3 to be exposed in an external environment.
  • any contact lens without forming the positioning slot is different from the contact lens 100 of the present embodiment.
  • positioning structures of the forming mold abut against the part of the circuit structure 3 to precisely position the circuit structure 3 and the electronic component 2 to a predetermined position, such that a hydrogel or a silicone hydrogel is injected into the forming mold to encapsulate the circuit structure 3 and the electronic component 2 and is solidified to form the lens body 1 .
  • parts of the lens body 1 covering the positioning structures of the forming mold respectively define the positioning slots 123 .
  • the annular wearing portion 12 is designed to have the positioning slots 123 for facilitating the high precision positioning of the circuit structure 3 and the electronic component 2 in the manufacturing process of the contact lens 100 , so that the contact lens 100 can have a high conformity in mass production.
  • the positioning slots 123 can be controlled in a specific scope (e.g., a sum of areas of openings of the positioning slots 123 is to be less than or equal to 1% of a sum of area of the front surface 1 a and area of the rear surface 1 b ), thereby preventing the structural strength of the contact lens 100 from being affected.
  • the part of the circuit structure 3 is exposed from the corresponding positioning slot 123 for increasing the heat-dissipation efficiency of the circuit structure 3 .
  • the positioning slots 123 in the present embodiment include a plurality of front positioning slots 123 a and a plurality of rear positioning slots 123 b .
  • the front positioning slots 123 a are recessed from the front surface 1 a (e.g., the free curved surface 12 a ) toward the circuit structure 3
  • the rear positioning slots 123 b are recessed from the rear surface 1 b toward the circuit structure 3 , but the present disclosure is not limited thereto.
  • a bottom side of each of the rear positioning slots 123 b and/or a bottom side of each of the front positioning slots 123 a can have a part of the circuit structure 3 so as to enable the part of the circuit structure 3 to be exposed in the external environment.
  • a depth of each of the front positioning slots 123 a is within a range from 50 ⁇ m to 100 ⁇ m
  • a depth of each of the rear positioning slots 123 b is within a range from 50 ⁇ m to 100 ⁇ m.
  • the contact lens 100 of the present embodiment is provided by designing the depths of the front positioning slots 123 a and the rear positioning slots 123 b , such that the circuit structure 3 can be precisely embedded in the lens body 1 at a predetermined depth.
  • the predetermined depth can be changed according to design requirements, and is not limited by the present embodiment.
  • the rear positioning slots 123 b and any one of the front positioning slots 123 a in the present embodiment do not correspond to a same part of the circuit structure 3 for forming a multi-point positioning effect by the above staggered arrangement, thereby facilitating the high precision positioning of the circuit structure 3 and effectively preventing a specific point of the contact lens 100 from having a weak structural strength.
  • the front positioning slot 123 a and the rear positioning slot 123 b can each extend along a radial direction of the lens body 1 and across the circuit structure 3 , but the present disclosure is not limited thereto.
  • the front positioning slot 124 a in the present embodiment is substantially a stepped structure.
  • the front positioning slot 123 a has a first tread surface 1231 , a first riser surface 1232 connected in-between the front surface 1 a (e.g., the free curved surface 12 a ) and the first tread surface 1231 , a second tread surface 1233 spaced apart from the first tread surface 1231 , and a second riser surface 1234 that is connected in-between the first tread surface 1231 and the second tread surface 1233 .
  • the first tread surface 1231 is arranged on the bottom side of the first positioning slot 123 a , and the first tread surface 1231 includes the part of the circuit structure 3 exposed in the external environment.
  • the second tread surface 1233 is spaced apart from the front surface 1 a (e.g., the free curved surface 12 a ) by a distance that is greater than a distance between the first tread surface 1231 and the front surface 1 a (e.g., the free curved surface 12 a ).
  • the second riser surface 1234 is arranged at one side of the circuit structure 3 or one side of the electronic component 2 , and the circuit 32 is entirely embedded in the lens body 1 . In other words, the circuit structure 3 can be exposed from the positioning slots 123 only through a part of the carrier 31 .
  • each of the front positioning slots 123 a can be adjusted or changed according to design requirements, and the front positioning slots 123 a in the present embodiment are formed in different structures (as shown in FIG. 4 and FIG. 8 ), thereby facilitating the high precision positioning of the circuit structure 3 .
  • a depth of any one of the front positioning slots 123 a in the lower eyelid region 122 is greater than a depth of another one of the front positioning slots 123 a in the layout region 121 .
  • the bottom side (or the first tread 1231 ) of any one of the front positioning slots 123 a in the lower eyelid region 122 includes a part of the electronic component 2 to enable the part of the electronic component 2 to be exposed in the external environment, thereby facilitating the high precision positioning of the circuit structure 3 .
  • the contact lens 100 in the present embodiment can be further cooperated with any kind of devices.
  • the contact lens 100 can be wirelessly connected to any wearable device (e.g., a glasses-mounted reader or a neck-worn reader) worn on a user, and the wearable device (or the reader) can use a common wireless transmission technology (e.g., the RFID technology in a bandwidth at 13.56 MHz or 860-960 MHz) or other wireless technologies of induction power or signal transmission so as to supply power, provide a sensing function, or provide signal feedback for the contact lens 100 , thereby allowing for applications such as intelligent monitoring (e.g., a full-time intraocular pressure value collection and warning), intelligent treatments (e.g., a dry eye drug sustained release control), AR services (e.g., an image projection), or other intelligent applications.
  • intelligent monitoring e.g., a full-time intraocular pressure value collection and warning
  • intelligent treatments e.g., a dry eye drug sustained release control
  • AR services e.g.
  • a second embodiment of the present disclosure which is similar to the first embodiment of the present disclosure, is provided.
  • descriptions of the same components in the first and second embodiments of the present disclosure will be omitted herein, and the following description only discloses different features between the first and second embodiments.
  • At least one of the front positioning slots 123 a can be a jagged shape formed across the thru-holes 3111 so as to enable a part of each of the thru-holes 3111 to be exposed in the external environment.
  • the front positioning slot 123 a having the jagged shape extends along the radial direction of the lens body 1 and across the circuit structure 3 .
  • a position of the part of each of the thru-holes 3111 corresponds to a position between the first tread surface 1231 and the second tread surface 1233 of the front positioning slot 123 a having the jagged shape.
  • each of the first tread surface 1231 and the second tread surface 1233 includes a plurality of segments being separate from each other, the first tread surface 1231 includes the part of the circuit structure 3 for exposing the part of the circuit structure 3 , a distance between the second tread surface 1233 and the front surface 1 a is greater than a distance between the first tread surface 1231 and the front surface 1 a , and the first riser surface 1232 is connected to the free curved surface 12 a and the second tread surface 1233 .
  • the annular wearing portion 12 of the contact lens 100 in the present embodiment is provided with the front positioning slot 123 a having the jagged shape and being formed across the thru-holes 3111 , thereby further facilitating the high precision positioning of the circuit structure 3 .
  • a third embodiment of the present disclosure which is similar to the first and second embodiments of the present disclosure, is provided.
  • descriptions of the same components in the first to third embodiments of the present disclosure will be omitted herein, and the following description only discloses different features among the first to third embodiments.
  • each of the thru-holes 3111 has an elongated shape substantially having a same width
  • the front positioning slots 123 a are formed in the layout region 121
  • the carrier 31 has a plurality of radial notches 313 recessed from an outer edge thereof toward the central axis L.
  • the structure of the front positioning slot 123 a and the connection relationship between the front positioning slot 123 a and the circuit structure 3 are similar to those disclosed in the first embodiment shown in FIG. 1 and FIG. 9 , and are omitted herein for the sake of brevity.
  • an area of the thru-holes 3111 arranged in the first quadrant Q 1 and the second quadrant Q 2 can be greater than an area of the thru-holes 3111 arranged in the third quadrant Q 3 and the fourth quadrant Q 4 .
  • an area of the thru-holes 3111 is 1% to 85% (e.g., preferably 10% to 40%) of an area surrounded by an outer contour of the C-shaped segment 311 .
  • any two of the thru-holes 3111 adjacent to each other can be provided with one of the front positioning slots 123 a therebetween, and the thru-holes 3111 include a plurality of first thru-holes 3111 a and a plurality of second thru-holes 3111 b .
  • the first thru-holes 3111 a are located at an inner side of the second thru-holes 3111 b .
  • a radius of each of the second thru-holes 3111 b is different from (e.g., greater than) a radius of each of the first thru-holes 3111 a.
  • each of the first thru-holes 3111 a is in an arced shape having a center of circle located on the central axis L, and the first thru-holes 3111 a are spaced apart from each other.
  • Each of the second thru-holes 3111 b is in an arced shape having a center of circle located on the central axis L, and the second thru-holes 3111 b are spaced apart from each other.
  • a partition between any two of the first thru-holes 3111 a adjacent to each other has one of the front positioning slots 123 a , and the partition between any two of the first thru-holes 3111 a adjacent to each other and a partition (not having the front positioning slot 123 a ) between any two of the second thru-holes 3111 b adjacent to each other are not arranged in a same radial direction of the contact lens 100 , thereby facilitating the high precision positioning of the circuit structure 3 .
  • the contact lens of the present disclosure is provided with the free curved surface arranged on the front surface of the lens body, so that a thickness of the layout region does not need to be based completely on (or be equal to) a thickness of the lower eyelid region for thinning the layout region (e.g., the thickness of the annular wearing portion gradually increases in a direction toward the lower eyelid region). Accordingly, an oxygen permeability of the layout region can be effectively increased, and the foreign body sensation of the contact lens can be reduced (or improved).
  • the contact lens of the present disclosure is provided with the at least one thru-hole being formed on the C-shaped segment and having a specific area (e.g., the area of the at least one thru-hole 3111 is 1% to 85% of the area surrounded by an outer contour of the C-shaped segment 311 ), thereby effectively reducing the generation of wrinkles or the stress concentration on the carrier, and further increasing the oxygen permeability of the contact lens by being cooperated with the free curved surface.
  • the annular wearing portion is designed to have the positioning slots for facilitating the high precision positioning of the circuit structure and the electronic component in the manufacturing process of the contact lens, so that the contact lens can have a high conformity in mass production.
  • the positioning slots can be controlled in a specific scope (e.g., the sum of areas of openings of the positioning slots is less than or equal to 1% of the sum of area of the front surface and area of the rear surface), thereby preventing the strength of the contact lens from being affected.
  • the part of the circuit structure is exposed from the corresponding positioning slot for increasing the heat-dissipation efficiency of the circuit structure.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Otolaryngology (AREA)
  • Eyeglasses (AREA)
  • Prostheses (AREA)
  • Structure Of Printed Boards (AREA)
  • Optical Couplings Of Light Guides (AREA)
US18/318,738 2022-06-12 2023-05-17 Contact lens Pending US20230400713A1 (en)

Priority Applications (1)

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US18/318,738 US20230400713A1 (en) 2022-06-12 2023-05-17 Contact lens

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US202263351432P 2022-06-12 2022-06-12
US18/318,738 US20230400713A1 (en) 2022-06-12 2023-05-17 Contact lens

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US18/318,738 Pending US20230400713A1 (en) 2022-06-12 2023-05-17 Contact lens
US18/318,737 Pending US20230400708A1 (en) 2022-06-12 2023-05-17 Contact lens
US18/318,733 Pending US20230400712A1 (en) 2022-06-12 2023-05-17 Contact lens
US18/318,732 Pending US20230400707A1 (en) 2022-06-12 2023-05-17 Contact lens
US18/207,223 Pending US20230400710A1 (en) 2022-06-12 2023-06-08 Contact lens
US18/207,214 Pending US20230400709A1 (en) 2022-06-12 2023-06-08 Contact lens

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US18/318,733 Pending US20230400712A1 (en) 2022-06-12 2023-05-17 Contact lens
US18/318,732 Pending US20230400707A1 (en) 2022-06-12 2023-05-17 Contact lens
US18/207,223 Pending US20230400710A1 (en) 2022-06-12 2023-06-08 Contact lens
US18/207,214 Pending US20230400709A1 (en) 2022-06-12 2023-06-08 Contact lens

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US (6) US20230400713A1 (zh)
EP (6) EP4290297A1 (zh)
JP (3) JP2023181556A (zh)
CN (6) CN117215087A (zh)
TW (4) TW202401099A (zh)
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