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WO2013137179A1 - Lentille de lunettes et lunettes bifocales - Google Patents

Lentille de lunettes et lunettes bifocales Download PDF

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Publication number
WO2013137179A1
WO2013137179A1 PCT/JP2013/056603 JP2013056603W WO2013137179A1 WO 2013137179 A1 WO2013137179 A1 WO 2013137179A1 JP 2013056603 W JP2013056603 W JP 2013056603W WO 2013137179 A1 WO2013137179 A1 WO 2013137179A1
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Prior art keywords
lens
lens element
astigmatism
prism
lens elements
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PCT/JP2013/056603
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English (en)
Japanese (ja)
Inventor
恵介 太田
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Tokai Optical Co Ltd
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Tokai Optical Co Ltd
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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
    • G02C7/08—Auxiliary lenses; Arrangements for varying focal length
    • G02C7/081—Ophthalmic lenses with variable focal length

Definitions

  • the present invention relates to a spectacle lens in which two lens elements are overlapped in the front-rear direction and the S power can be changed by relatively shifting the lens elements, and a bifocal spectacle equipped with such a lens. .
  • Non-Patent Document 1 discloses spectacles using an Alvarez lens developed as spectacles at the time of disaster or emergency.
  • the spectacles are spectacles composed of two lens elements on the left and right sides, and the knobs are rotated to slide the lenses, and the degree of overlapping of the lenses is adjusted to change the spherical power.
  • the spectacle lens of Non-Patent Document 1 is supposed to be used when the original spectacles are lost in a disaster or emergency, and is not necessarily easy to use.
  • the S power variable region covers from ⁇ 6D (diopter, hereinafter abbreviated) to + 3D, and since the aberration is not corrected, the clear vision region is narrow and the performance is not satisfactory as a spectacle lens.
  • the spectacles can be used for presbyopia by changing the spherical power during near vision and near vision while using as a single focus lens.
  • a lens can be expected to be in sufficient demand by applying it to bifocal glasses.
  • this type of spectacle lens has been required to be applicable to bifocal glasses that can be used in daily life other than disasters and emergencies that have a wider clear visual field and are easier to use.
  • the present invention has been made paying attention to such problems existing in the prior art. It is an object of the present invention to provide a spectacle lens that can change the spherical power by overlapping two lens elements in the front-rear direction and relatively shifting the spectacle lens, and a spectacle lens that has a wider clear visual field and is easy to use.
  • the object is to provide bifocal glasses equipped with a lens.
  • the first and second lens elements are arranged in parallel in the front-rear direction so that the optical axes are parallel, and relatively in a direction approximately orthogonal to the optical axis.
  • the object-side surface of the first lens element arranged outside and the eyeball-side surface of the second lens element arranged inside Are combined as an additional sag amount with a function g (x, y) of the same or different curved surface such that the partial derivative g xy obtained by partial differentiation with x and y is a function or constant only of y.
  • the gist of the invention is that both lens elements can be moved in the opposite direction only in the x-axis direction, and at least one surface of the both lens elements is aspherical to reduce aberrations. To do.
  • a function g (x, y) of a cubic surface synthesized as an additional sag amount in the first and second lens elements is defined by the following expression. To do.
  • the reference surface for synthesizing the additional sag amount with the first and second lens elements has a spherical shape, a flat surface, or an astigmatic surface. Is the gist. Further, the gist of the means 4 is that the variable range of the S frequency is within 4D in addition to the structure described in any of the means 1 to 3.
  • the gist of the means 5 is that, in addition to the structure described in any one of the means 1 to 4, one of the first and second lens elements is fixed and only the other is movable.
  • the gist of the means 6 is that, in addition to the configuration described in the means 5, the aspherical design is performed only on the lens element on the fixing side among the first and second lens elements.
  • the gist of the means 7 is that, in addition to the configuration described in the means 5 or 6, the astigmatism correction design is performed only on the fixed lens element among the first and second lens elements. .
  • the first or second lens that shifts the refractive power related to the light beam transmitted through the first and second lens elements to the plus side.
  • the gist is that the prism change due to the movement of the element is an increase in the in-prism or a decrease in the out-prism.
  • the gist of the means 9 is that, in addition to the configuration described in any one of the means 5 to 8, the second lens element side is fixed and only the first lens element side is movable.
  • the gist of the means 10 is that, in addition to the configuration described in any one of the means 1 to 9, a spectacle lens is mounted on the bifocal glasses described in any of the means 1 to 11.
  • the first and second lens elements are arranged in parallel in the front-rear direction so that the optical axes are parallel, and are relatively opposite to the direction approximately orthogonal to the optical axis. It is possible to provide a spectacle lens having a small clear astigmatism and a wide clear viewing area, in which the spherical power can be changed by moving the lens to.
  • the object-side surface of the first lens element arranged outside and the eyeball of the second lens element arranged inside It is necessary to synthesize a cubic surface function g (x, y) such that the partial derivative g xy (x, y) is represented by a function of y only or a constant on the side surface as an additional sag amount. is there.
  • the partial derivative g xy (x, y) is a derivative obtained by partial differentiation of the function g (x, y) with x and y.
  • Each of the three-dimensional curved surface is required to have the property that the value of J 00 component and J 45 component surface astigmatism in everywhere is determined only by the y coordinate regardless of the x coordinate. This is because the two lens elements are used while being relatively moved in the x-axis direction. And it is necessary not to generate astigmatism when the two lens elements are relatively moved in the x-axis direction. Assuming that the value of J 00 component or J 45 component was different values by the x-coordinate, the value of J 00 component or J 45 components of power related to light transmitted through the two lens elements are lens elements x axis direction It will change by moving to.
  • the astigmatism power generated in the transmitted light beam by the corresponding two-point surface astigmatism does not change even if the lens element is moved in the x-axis direction. It is constant.
  • the J 00 component surface astigmatism which is the difference in the refractive power in the horizontal direction of the refractive power and the vertical direction. It is proportional to the difference between the value of the derivative that is second-order partial differentiated by x and the value of the derivative that is second-order partially differentiated by y, so that the value of the difference is determined only by the y coordinate regardless of the x coordinate.
  • the J 45 component of surface astigmatism is the difference between the refractive power in the oblique 45 degree direction and the refractive power in the oblique 135 degree direction. It is proportional to the value of the derivative obtained by partial differentiation with respect to x and y, and the value is determined only by the y coordinate, not by the x coordinate.
  • Such a surface has an average value of surface refractive power of 0, and has an astigmatism in which the axis is oblique.
  • the strength of the surface astigmatism is proportional to A.
  • the partial derivatives of each of the three-dimensional curved surface ⁇ 2 g (x, y) / ⁇ x 2 - ⁇ 2 g (x, y) / ⁇ y 2 And ⁇ 2 g (x, y) / ⁇ x ⁇ y Is a function or constant that is only y.
  • “unrelated to the x coordinate and determined only by the y coordinate” and “constant everywhere” are approximate meanings, and an allowable error may occur in the lens peripheral region.
  • the cubic surface function g (x, y) specifically, for example, the one represented by the above equation (1) can be considered.
  • the cubic surface of the first lens is a curved surface with the ear side convex forward with respect to the pupil position.
  • the third curved surface of the second lens is convex rearward on the nose side. Further, it is necessary to slide both the first and second lens elements facing each other while completely contacting each other. For this reason, the facing surfaces must be formed of a flat surface or a spherical surface having the same curve.
  • the reference surface for synthesizing the additional sag amount with the first and second lens elements is preferably a spherical surface, a flat surface, or an astigmatic surface in terms of ease of lens design. If the base shape of either of the two lens elements produces a refracting power with respect to light rays that pass through it, this is referred to as the base refracting power.
  • the base refractive power is not constant depending on the location on the lens surface, the distribution of the base refractive power changes as the lens element moves. If the refractive power for each cross-sectional direction changes at each point on the lens surface, the astigmatism power at that point changes, but in the present invention, it is not preferable that the astigmatism power change as the lens element moves.
  • the distribution of the base refractive power changes greatly with the movement of the lens element. From the above, it is preferable that the base refractive power is as constant as possible in each cross-sectional direction. However, it does not matter that the refractive powers are different for different cross-sectional directions.
  • an astigmatic lens having both sides as a trick surface, or a single-sided spherical surface and a one-sided trick surface can have such a base shape.
  • a shape obtained by adding an element of inclination represented by the x1st order and y1th order equations to these surfaces can also be a base shape.
  • the shapes (base shapes) before the addition sag amounts of the first and second lens elements are combined may be the same or different.
  • the base shape is naturally different.
  • variable range of the S power is within 4D.
  • the lens element on the fixing side it is necessary to suppress the prism small.
  • the function g (x, y) of the cubic surface so that the prism becomes small.
  • the refractive power of the lens element on the fixing side it is conceivable to set the refractive power of the lens element on the fixing side to be larger than the refractive power of the lens element on the moving side as the prism suppressing means. This is for the following reason.
  • the fact that the lens has refractive power corresponds to having a prism distribution. For example, if the central prism is 0 in a lens having a minus power, there is a prism having a lens peripheral direction as a base direction (a thicker lens peripheral direction) at a position away from the center.
  • the amount of prism increases as the distance from the center of the lens increases.
  • the amount of prism generated is proportional to the lens power.
  • the lens element on the fixing side is the second lens element side on the eyeball side (rear side). This is because if the lens to be moved is on the object side, it does not hit the temple of the spectacle frame.
  • the aspherical design and the astigmatism correction design are performed only on the lens element on the fixed side. This is because these designs are designed on the assumption that the pupil position is fixed. For example, in the astigmatism correction design, the astigmatism axis direction is determined. The distribution of the optical effect due to the aspherical surface is shifted with respect to the eye. Furthermore, the fact that the power of astigmatism moves with respect to the eye means that the “prism at a position away from the center” that exists accompanying the cross-sectional refractive power in a certain direction moves. Further, it is preferable that the first and second lens elements are arranged so that a prism generated by the movement of the moving lens element becomes an in-prism.
  • the cubic curved surface formed on the object side surface of the first lens element that is outside the left eye is a curved surface that is thick on the ear side and thin on the nose side.
  • the cubic curved surface formed on the eyeball side surface of the second lens element is a curved surface that is thick on the nose side and thin on the ear side.
  • the in-prism has an effect of easily performing convergence in near vision, and thus is not necessarily disadvantageous as a spectacle lens. Therefore, if the generation of a prism is unavoidable when one lens element is fixed, it is preferable to move the first and second lens elements so as to be an in-prism. In that case, the second lens element side is preferably fixed. In FIGS. 20A and 20B, the first lens element is moved into the in-prism when moved to the ear side. However, if the curve characteristic of the cubic surface is reversed, it is moved to the nose side. It becomes a prism.
  • the clear vision range is wide and easy to use in the bifocal glasses equipped with the spectacle lens in which the spherical power can be changed by overlapping and shifting the two lens elements in the front-rear direction.
  • (a) And (b) is a distribution map of the average power and astigmatism in Example 1, respectively.
  • (a) And (b) is a distribution map of the average power and astigmatism in Example 2, respectively.
  • (a) And (b) is a distribution map of the average power and astigmatism in Example 3, respectively.
  • (a) And (b) is a distribution map of the average power and astigmatism in Example 4, respectively.
  • (a) And (b) is a distribution map of the average power and astigmatism in the comparative example 1, respectively.
  • (a) And (b) is a distribution map of the average power and astigmatism in the comparative example 2, respectively.
  • 6 is a distribution diagram of average power and astigmatism at a reference position in Example 5.
  • FIG. 10 is a distribution diagram of average power and astigmatism when both lens elements in Example 5 are moved equidistantly.
  • FIG. 10 is a distribution diagram of average power and astigmatism when the second lens element in Example 5 is fixed.
  • 10 is a distribution diagram of average power and astigmatism at a reference position in Example 6.
  • FIG. 10 is a distribution diagram of average power and astigmatism in a state where both lens elements in Example 6 are moved equidistantly.
  • FIG. 10 is a distribution diagram of average power and astigmatism in a state where the second lens element in Example 6 is fixed.
  • 10 is a distribution diagram of average power and astigmatism at a reference position in Comparative Example 3.
  • FIG. 10 is a distribution diagram of average power and astigmatism when both lens elements in Comparative Example 3 are moved by an equal distance.
  • FIG. 10 is a distribution diagram of average power and astigmatism in a state where the second lens element is fixed in an actual comparative example 3.
  • 10 is a distribution diagram of average power and astigmatism at a reference position in Comparative Example 4.
  • FIG. 10 is a distribution diagram of average power and astigmatism when both lens elements in Comparative Example 4 are moved equidistantly.
  • FIG. 10 is a distribution diagram of average power and astigmatism in a state where the second lens element in an actual comparative example 4 is fixed.
  • (A) is explanatory drawing explaining the case where the lens element of the same refractive power which has a curved surface of the same characteristic is moved by an equal amount in the reverse direction before the movement, (b).
  • (A) is explanatory drawing explaining the case where only one of the lens elements of the same refractive power which have the curved surface of the same characteristic after movement and (b) after movement is moved. Explanatory drawing explaining that transmitted light is refracted inside by generation
  • the eyeglass lens of the embodiment is actually mounted on a frame and used as bifocal glasses.
  • the spectacle lens had a meniscus lens shape, and in all the following examples, a lens having a diameter of 50 mm and a material refractive index of 1.600 was used.
  • the first lens element arranged on the outside and the second lens element arranged on the inside are in surface contact with a base curve surface having a predetermined spherical shape (which must not be an aspheric surface). Both lens elements are mounted on the frame so that the x-axis direction is horizontal.
  • Equation 3 is a functional equation that gives an aspherical sag of a rotationally asymmetric aspheric surface
  • Equation 4 is a functional equation that gives an aspherical sag of a rotationally symmetric aspheric surface.
  • the result of both equations is added to give an aspherical sag.
  • the aspherical sag function in Examples 5 and 6 is expressed by the following equations 5 to 7. In Examples 5 and 6, the results of the three expressions are added to give an aspherical sag.
  • the coefficient A is referred to as an Alvarez coefficient.
  • a lens was designed by adding a synthetic curved surface given by these functions to the base shape, and the average power and astigmatism were calculated.
  • Example 1 In Example 1, it is assumed that the second lens element is fixed and only the first lens element is moved. The moving direction of the first lens element during the transition from the far vision state to the near vision state is the ear side direction.
  • the setting conditions of the eyeglass lens of Example 1 are as follows. The cubic curved surface is arranged so that the ear side is convex forward with respect to the pupil position in the first lens element. The following examples and comparative examples are the same. In Example 1, the aspherical sag is provided only on the back surface side of the second lens element.
  • FIG. 1A is a distribution diagram based on the average power and astigmatism values in the distance vision state in which the first lens element is moved 13.5 mm in the horizontal direction in the eyeglass lens of the first embodiment. Thick contour lines are in 1D increments, and thin contour lines are in 0.25D increments (the same applies to the following examples and comparative examples).
  • the S frequency was ⁇ 4.00 D
  • the prism was 2.73 on the in side. It is a slightly higher prism.
  • FIG. 1B is a distribution diagram based on the average power and astigmatism values in a state where the first lens element is moved 6.70 mm in the horizontal direction. In this state, the S frequency was ⁇ 2.00 D, and the prism was 0.67 on the in side.
  • Example 2 In the second embodiment, both lens elements are moved equidistantly in opposite directions. Further, the aspherical sag is given only to the back side of the second lens element.
  • the setting conditions of the spectacle lens of Example 2 are as follows.
  • Second lens element Front curve 0 (1.523 conversion) Alvarez coefficient (A) 0.0005 Second lens element Front curve 0, back curve 2 (1.523 equivalent) Alvarez coefficient (A) 0.0005 Aspheric coefficient of each term of hA (r) 4th order term: 4 ⁇ 10 ⁇ 7 , 5th order term: ⁇ 4 ⁇ 10 ⁇ 9 , 6th order term: 1 ⁇ 10 ⁇ 12 , 8th order term: 1 ⁇ 10 ⁇ 15 Aspherical coefficient of each term of hB (r) 4th order term: 1 ⁇ 10 ⁇ 7 , 5th order term: 1 ⁇ 10 ⁇ 9 , 6th order term: 0, 8th order term 0
  • FIG. 2A is a distribution diagram based on the average power and astigmatism values in the distance vision state in which both lens elements are moved in the horizontal direction by 3.36 mm (totally less than 6.70 mm), respectively.
  • the S frequency was ⁇ 4.00 D
  • the prism was 0.67 on the out side.
  • FIG. 2B is a distribution diagram based on the average power in the near vision state and the numerical value of astigmatism at the reference position in which the both lens elements are matched without shifting in the spectacle lens of the second embodiment.
  • Example 2 the refractive power of the first lens element is 0D, and the refractive power of the second lens element is 2D.
  • the S frequency is set to -2.00 D when both lens elements are not shifted.
  • the prism was zero. The prism is generated even though both lens elements are moved by the same distance because the refractive powers of both lens elements are unbalanced.
  • Example 2 since both lens elements are moved by the same distance, the astigmatism generated when the second lens element as in Example 1 is fixed is improved, but the refractive power of both lens elements is improved. Astigmatism resulting from imbalance occurs. However, astigmatism is improved as a total due to the aspherical shape.
  • Example 3 In Example 3, the second lens element is fixed and only the first lens element is moved. The moving direction of the first lens element during the transition from the far vision state to the near vision state is the ear side direction. Further, the aspherical sag is given only to the surface side of the second lens element.
  • the setting conditions of the spectacle lens of Example 3 are as follows.
  • Second lens element Front curve 0 (1.523 conversion) Alvarez coefficient (A) 0.0005 Second lens element Front curve 0, back curve 2 (1.523 equivalent) Alvarez coefficient (A) 0.0005 Aspherical coefficient of each term of hA (r) 4th order term: ⁇ 2 ⁇ 10 ⁇ 7 , 5th order term: 4 ⁇ 10 ⁇ 9 , 6th order term: ⁇ 1 ⁇ 10 ⁇ 12 , 8th order term : -1 ⁇ 10 ⁇ 15 Aspherical coefficient of each term of hB (r): Fourth-order term: ⁇ 1 ⁇ 10 ⁇ 7 , fifth-order term: ⁇ 1 ⁇ 10 ⁇ 9 , sixth-order term: 0, eighth-order term 0
  • FIG. 3A is a distribution diagram based on the average power and astigmatism values in the distance vision state in which the first lens element is moved by 6.54 mm in the horizontal direction. In this state, the S frequency was ⁇ 4.00 D and the prism was 0.
  • FIG. 3B is a distribution diagram based on the average power of the near vision state and the numerical value of astigmatism at the reference position in which the both lens elements are matched without shifting in the spectacle lens of the third embodiment.
  • the refractive power of the first lens element is 0D
  • the refractive power of the second lens element is 2D.
  • the S frequency is set to -2.00 D when both lens elements are not shifted. It was 0.66 on the in side.
  • Example 3 Astigmatism easily occurs because the second lens element is fixed, but the astigmatism is improved because the refractive power is given only to the second lens element side. . Further, by providing refractive power only to the second lens element side, for example, the prism is also smaller than in the first embodiment. In addition, astigmatism is improved as a total because it is aspherical.
  • Example 4 In Example 4, the second lens element is fixed, and only the first lens element is moved. The moving direction of the first lens element during the transition from the far vision state to the near vision state is the ear side direction. An aspherical sag is provided on the back surface of the second lens element.
  • the setting conditions of the spectacle lens of Example 3 are as follows.
  • Second lens element Front curve 0 (1.523 conversion) Alvarez coefficient (A) 0.0005 Second lens element Front curve 0, back curve 2 (1.523 equivalent) Alvarez coefficient (A) 0.0005 Aspherical coefficient of each term of hA (r) 4th order term: 3 ⁇ 10 ⁇ 7 , 5th order term: ⁇ 4 ⁇ 10 ⁇ 9 , 6th order term: 1 ⁇ 10 ⁇ 12 , 8th order term: 1 ⁇ 10 ⁇ 15 Aspherical coefficient of each term of hB (r) 4th order term: 1 ⁇ 10 ⁇ 7 , 5th order term: 1 ⁇ 10 ⁇ 9 , 6th order term: 0, 8th order term 0
  • FIG. 4A is a distribution diagram based on the average power and astigmatism values in the distance vision state in which the first lens element is moved 6.54 mm in the horizontal direction. In this state, the S frequency was ⁇ 4.00 D, and the prism was 0.
  • FIG. 4B is a distribution diagram based on the average power in the near vision state and the numerical value of astigmatism at the reference position where the lens elements of the spectacle lens of Example 4 are matched without shifting.
  • the refractive power of the first lens element is 0D
  • the refractive power of the second lens element is 2D.
  • the S frequency is set to -2.00 D when both lens elements are not shifted. It was 0.68 on the in side.
  • Example 4 since the second lens element is fixed, astigmatism is likely to occur. However, since the refractive power is applied only to the second lens element side, the astigmatism is improved. ing. Moreover, the prism is also made small by giving refractive power only to the second lens element side. In addition, astigmatism is improved as a total because it is aspherical. Although the improvement tendency was the same as that of Example 3, since the aspherical sag was given to the back side of the second lens element, the whole given to the front side was better than Example 3.
  • FIG. 5A is a distribution diagram based on the average power and astigmatism values in the distance vision state in which the first lens element is moved 6.68 mm (totally less than 13.5 mm) in the horizontal direction. . In this state, the S frequency is ⁇ 4.00 D and the prism is 0.
  • FIG. 5A is a distribution diagram based on the average power and astigmatism values in the distance vision state in which the first lens element is moved 6.68 mm (totally less than 13.5 mm) in the horizontal direction. . In this state, the S frequency is ⁇ 4.00 D and the prism is 0.
  • FIG. 6A is a distribution diagram based on the average power and astigmatism values in the distance vision state in which the first lens element is moved 6.70 mm in the horizontal direction. In this state, the S frequency was ⁇ 4.00 D, and the prism was 2.73 on the in side.
  • FIG. 6B is a distribution diagram based on the average power and astigmatism values in the near vision state in which the first lens element is moved 6.70 mm in the horizontal direction in the eyeglass lens of Comparative Example 1.
  • Example 1 In this state, the S frequency was ⁇ 2.00 D, and the prism was 0.67 on the in side.
  • This comparative example 1 is different only in that it is not aspherical. Also in Example 1, astigmatism is not suppressed so much because the refractive powers of both lens elements are equal, but astigmatism does not occur largely because it is aspherical, and astigmatism in Comparative Example 2 does not occur. Is larger, and Example 1 is better in terms of astigmatism.
  • FIG. 7 is a distribution diagram based on the average power in the distance vision state at the reference position and the numerical value of astigmatism. In this state, the S frequency was ⁇ 4.00 D and the prism amount was 0.
  • FIG. 8 is a distribution diagram based on the average power and astigmatism values in the distance vision state in which each lens element is moved 6.70 mm in the horizontal direction. In this state, the S frequency was -2.00 D, and the prism was 0.02 on the in side.
  • FIG. 7 is a distribution diagram based on the average power in the distance vision state at the reference position and the numerical value of astigmatism. In this state, the S frequency was ⁇ 4.00 D and the prism amount was 0.
  • FIG. 8 is a distribution diagram based on the average power and astigmatism values in the distance vision state in which each lens element is moved 6.70 mm in the horizontal direction. In this state, the S frequency was -2.00 D, and the prism was 0.02 on the in side.
  • FIG. 7 is a distribution diagram
  • FIG. 9 is a distribution diagram based on the average power and astigmatism values in the distance vision state in which only the first lens element is moved 13.30 mm in the horizontal direction.
  • the S frequency was ⁇ 2.00 D
  • the prism was 1.34 on the in side.
  • the Alvarez coefficient (A) of the first and second lens elements is set to 0.00025 (that is, twice that of the fifth embodiment) in the setting conditions of the fifth embodiment.
  • the distance vision state at each of 1) the reference position, 2) both movements, and 3) the back fixed position was examined.
  • FIG. 10 is a distribution diagram based on the average power in the distance vision state at the reference position and the numerical value of astigmatism. In this state, the S frequency was ⁇ 4.00 D and the prism amount was 0.
  • FIG. 11 is a distribution diagram based on the average power and astigmatism values in the distance vision state in which each lens element is moved by 3.27 mm in the horizontal direction.
  • FIG. 12 is a distribution diagram based on the average power and astigmatism values in the distance vision state in which only the first lens element is moved 6.60 mm in the horizontal direction.
  • the S frequency was -2.00 D
  • the prism was 0.66 on the in side.
  • the movement amount in the sixth embodiment is half that of the fifth embodiment because the Alvarez coefficient is twice that of the fifth embodiment so that the lens power is the same as that in the fifth embodiment (here, -2D). This is because the amount of movement may be half. That is, here, if the movement amount is to be reduced, it can be realized by relatively increasing the Alvarez coefficient. In this case, since the movement amount is small, the prism amount is also reduced. However, increasing the Alvarez coefficient is disadvantageous in terms of astigmatism.
  • FIG. 13 is a distribution diagram based on the average power in the distance vision state at the reference position and the numerical value of astigmatism. In this state, the S frequency was ⁇ 4.00 D and the prism amount was 0.
  • FIG. 14 is a distribution diagram based on the average power and astigmatism values in the distance vision state in which each lens element is moved 6.60 mm in the horizontal direction.
  • FIG. 15 is a distribution diagram based on the average power and astigmatism values in the distance vision state in which only the first lens element is moved 13.30 mm in the horizontal direction. In this state, the S frequency was ⁇ 2.00 D, and the prism was 1.34 on the in side.
  • Comparative Example 4 In Comparative Example 4, the first lens element and the second lens element are not subjected to aspherical processing with the same curve size, Alvarez coefficient, and aspherical coefficient as in Example 6 as setting conditions.
  • the distance vision state at each of 1) the reference position, 2) both movements, and 3) the back fixed position was examined.
  • FIG. 16 is a distribution diagram based on the average power in the distance vision state at the reference position and the numerical value of astigmatism. In this state, the S frequency was ⁇ 4.00 D and the prism amount was 0.
  • FIG. 17 is a distribution diagram based on the average power and astigmatism values in the distance vision state in which each lens element is moved 3.30 mm in the horizontal direction.
  • FIG. 18 is a distribution diagram based on the average power and astigmatism values in the distance vision state in which only the first lens element is moved 6.50 mm in the horizontal direction. In this state, the S frequency was -2.00 D, and the prism was 0.66 on the in side.
  • the present invention can be modified and embodied as follows.
  • the simulation is performed in the case where there is no astigmatism power.
  • the astigmatism power is set, it is preferable to set the second lens element side in order to reduce astigmatism.
  • the above is an example of the sag function of the cubic surface and the aspherical sag function of the above embodiment, and other function expressions can be freely used.
  • An aspherical sag may be given only to the first lens element, or an aspherical sag may be given to both the first lens element and the second lens element.
  • the down prism may be increased when the lens element is moved from the distance power state to the near power state.
  • the direction in which the lens element is moved is the vertical direction. Further, both the in-prism and the down-prism may be increased. At this time, the direction in which the lens element is moved is an oblique direction. In addition, you may make it implement this Embodiment in another aspect.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)
PCT/JP2013/056603 2012-03-14 2013-03-11 Lentille de lunettes et lunettes bifocales Ceased WO2013137179A1 (fr)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106662760A (zh) * 2014-05-21 2017-05-10 泰克年研究发展基金会公司 用于屈光力可调节眼镜的光学元件
WO2017144841A1 (fr) * 2016-02-22 2017-08-31 Adlens Ltd Perfectionnements apportés ou se rapportant à des lunettes dotées de verres à puissance optique réglable de manière sélective
CN108121084A (zh) * 2018-02-11 2018-06-05 深圳不虚科技有限公司 近视治疗镜片、近视治疗镜片组及近视治疗眼镜
CN110573937A (zh) * 2017-04-19 2019-12-13 卡尔蔡司光学国际有限公司 可调渐变镜片及设计方法
CN111399219A (zh) * 2019-02-28 2020-07-10 南昌虚拟现实研究院股份有限公司 虚拟现实镜组、设备以及系统
JPWO2021157447A1 (fr) * 2020-02-03 2021-08-12

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305294A (en) * 1964-12-03 1967-02-21 Optical Res & Dev Corp Two-element variable-power spherical lens
US3507565A (en) * 1967-02-21 1970-04-21 Optical Res & Dev Corp Variable-power lens and system
US3617116A (en) * 1969-01-29 1971-11-02 American Optical Corp Method for producing a unitary composite ophthalmic lens
JPS63254415A (ja) * 1987-04-13 1988-10-21 Seiko Epson Corp ２つの累進多焦点レンズを使用した視力矯正装置
WO1993015432A1 (fr) * 1992-02-03 1993-08-05 Seiko Epson Corporation Appareil de correction de puissance visuelle a foyer variable
WO1997019383A1 (fr) * 1995-11-24 1997-05-29 Seiko Epson Corporation Lentilles multifocales pour lunettes et verre de lunettes
US20070091257A1 (en) * 2005-03-21 2007-04-26 Gofxta, Inc. Adjustable focus eyeglasses

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305294A (en) * 1964-12-03 1967-02-21 Optical Res & Dev Corp Two-element variable-power spherical lens
US3507565A (en) * 1967-02-21 1970-04-21 Optical Res & Dev Corp Variable-power lens and system
US3617116A (en) * 1969-01-29 1971-11-02 American Optical Corp Method for producing a unitary composite ophthalmic lens
JPS63254415A (ja) * 1987-04-13 1988-10-21 Seiko Epson Corp ２つの累進多焦点レンズを使用した視力矯正装置
WO1993015432A1 (fr) * 1992-02-03 1993-08-05 Seiko Epson Corporation Appareil de correction de puissance visuelle a foyer variable
WO1997019383A1 (fr) * 1995-11-24 1997-05-29 Seiko Epson Corporation Lentilles multifocales pour lunettes et verre de lunettes
US20070091257A1 (en) * 2005-03-21 2007-04-26 Gofxta, Inc. Adjustable focus eyeglasses

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3146384A4 (fr) * 2014-05-21 2018-01-24 Technion Research & Development Foundation Ltd. Éléments optiques pour lunettes à puissance réglable
CN106662760A (zh) * 2014-05-21 2017-05-10 泰克年研究发展基金会公司 用于屈光力可调节眼镜的光学元件
CN113552731B (zh) * 2016-02-22 2023-08-25 艾亮有限公司 眼镜
WO2017144841A1 (fr) * 2016-02-22 2017-08-31 Adlens Ltd Perfectionnements apportés ou se rapportant à des lunettes dotées de verres à puissance optique réglable de manière sélective
CN108700757A (zh) * 2016-02-22 2018-10-23 艾亮有限公司 具有可选择地调节的屈光力透镜的眼镜的改进或者与该眼镜有关的改进
JP7519747B2 (ja) 2016-02-22 2024-07-22 アドレンズ リミテッド 選択的に調整可能な光学屈折力レンズを備えた眼鏡の改善
US11994754B2 (en) 2016-02-22 2024-05-28 Adlens Ltd Glasses with selectively adjustable optical power lenses
JP2023120342A (ja) * 2016-02-22 2023-08-29 アドレンズ リミテッド 選択的に調整可能な光学屈折力レンズを備えた眼鏡の改善
US11194174B2 (en) 2016-02-22 2021-12-07 Adlens Ltd Glasses with selectively adjustable optical power lenses
JP2021119418A (ja) * 2016-02-22 2021-08-12 アドレンズ リミテッドAdlens Limited 選択的に調整可能な光学屈折力レンズを備えた眼鏡の改善
CN113552731A (zh) * 2016-02-22 2021-10-26 艾亮有限公司 眼镜
US11086144B2 (en) 2017-04-19 2021-08-10 Carl Zeiss Vision International Gmbh Adjustable progressive lens and design method
CN110573937A (zh) * 2017-04-19 2019-12-13 卡尔蔡司光学国际有限公司 可调渐变镜片及设计方法
CN108121084A (zh) * 2018-02-11 2018-06-05 深圳不虚科技有限公司 近视治疗镜片、近视治疗镜片组及近视治疗眼镜
CN111399219A (zh) * 2019-02-28 2020-07-10 南昌虚拟现实研究院股份有限公司 虚拟现实镜组、设备以及系统
JPWO2021157447A1 (fr) * 2020-02-03 2021-08-12
JP7356743B2 (ja) 2020-02-03 2023-10-05 東海光学株式会社 眼鏡レンズの性能評価方法及びプログラム

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