WO2010090144A1 - 眼鏡レンズの評価方法、眼鏡レンズの設計方法、眼鏡レンズの製造方法、眼鏡レンズの製造システム、及び眼鏡レンズ - Google Patents
眼鏡レンズの評価方法、眼鏡レンズの設計方法、眼鏡レンズの製造方法、眼鏡レンズの製造システム、及び眼鏡レンズ Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
- G01M11/0257—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested
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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
- G02C7/024—Methods of designing ophthalmic lenses
- G02C7/027—Methods of designing ophthalmic lenses considering wearer's parameters
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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
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
- G02C7/061—Spectacle lenses with progressively varying focal power
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
- G02C2202/06—Special ophthalmologic or optometric aspects
Definitions
- the present invention relates to a spectacle lens evaluation method used for performance evaluation in designing or manufacturing a spectacle lens, a spectacle lens design method using the spectacle lens, a spectacle lens manufacturing method, a spectacle lens manufacturing system, and a spectacle lens. .
- Patent Document 1 discloses a technique for designing a spectacle lens using a visual acuity function.
- Patent Document 2 describes a spectacle lens designed in consideration of the chromatic aberration of the visual acuity function.
- the visual acuity function is a visual acuity normalized by the optical aberration of the lens and the characteristic value of the eyeball (relative adjustment value, relative convergence value, physiological astigmatism amount) when the object is viewed through the spectacle lens (when completely corrected, This is a function expressing the visual acuity normalized so as to be 0 in logMAR.
- Patent Documents 1 and 2 do not discuss any binocular vision function when wearing spectacles.
- Patent Document 1 since it is intended to be applied to a general-purpose lens, individual elements such as relative adjustment and relative convergence are not considered. Therefore, it is not suitable for designing an optimal spectacle lens incorporating individual information regarding binocular vision.
- the binocular lens design is of course not considered due to its general use.
- Patent Literature 2 although the chromatic aberration portion of the visual acuity function is considered, the other portions can be said to be inadequate technical content as an individual design considering binocular vision, as in Patent Literature 1 described above.
- Patent Document 3 Japanese Patent Publication No. 2-39767 (Japanese Patent Laid-Open Publication No. 57-10113)
- Patent Document 4 Japanese Patent Publication No. 2008-511033
- Patent Document 5 Japanese Patent Publication No. 2000-506628
- FIG. 4 is a diagram in which the horizontal position difference is drawn from the point P when the point of the lattice in the plane is the point P, and it can be seen that it is distorted particularly in the lower peripheral part.
- lines 25 to 27 of Patent Document 3 this is described as saddle-shaped distortion, barrel-shaped distortion, and the like. That is, in Patent Document 1, the relationship between the distortion and the horizontal position difference [Delta] P H has been suggested.
- Patent Document 5 discloses a technique regarding a so-called wrap-around type spectacle lens in which a lens is curved from the front side to the ear side. Further, on page 13 or 15 of Patent Document 5, there is a description about off-axis prism disparity. Here, the place regarding the binocular defect which is the assertion in Patent Document 5 will be mainly described.
- the definition of the off-axis prism disparity described on page 13 of Patent Document 5 is merely described as “binocular vision defects occur if the temporal and nasal aberrations are not equal”. However, this does not fully describe what aberration is, and cannot be understood. Further, as a method for correcting the off-axis prism disparity, there is only a description that an aspheric surface described on page 15 of Patent Document 5 is adopted, and the description is insufficient. In addition, although it is clear that the evaluation is performed with a single-eye lens, it is concluded on page 13 of Patent Document 5 that it is “defective in binocular vision”, and the basis is not clear.
- Patent Document 5 which does not disclose a method for determining the binocular vision tolerance, it is difficult to easily guess whether the design can be made below this tolerance, as in the case of normal spectacle lens standards. That is, even if such a tolerance is described in a state where binocular vision is not defined, it is not easy to apply the lens design to other general prescriptions.
- the spectacle lens design method is a real relative vergence, an imaginary relative vergence, an actual relative adjustment, an imaginary relative, which are individual measurement values for binocular vision of a spectacle wearer.
- this relative specific value includes at least one of actual relative convergence and / or false relative convergence as individual relative measurement values.
- the binocular visual acuity function including the relative measurement value as a factor is added to each target evaluation point, and the binocular vision function is optimized by using the function as an evaluation function at the time of the optimization calculation. Determine the value.
- the method for manufacturing a spectacle lens according to the present invention includes a step of manufacturing a spectacle lens based on the optical design value determined by the spectacle lens design method described above. Furthermore, the spectacle lens evaluation method according to the present invention evaluates the binocular vision function of the spectacle lens using the above-described binocular visual acuity function added at each target evaluation point as an evaluation function at the time of optimization calculation.
- the spectacle lens manufacturing system includes an ordering computer installed on the spectacle lens ordering side and having a function of performing processing necessary for ordering spectacle lenses, and receives information from the ordering computer.
- a spectacle lens manufacturing system in which a manufacturing computer having a function of performing processing necessary for ordering spectacle lenses and a communication line is connected, and includes the following elements.
- the ordering computer has a function of transmitting information necessary for the design of the spectacle lens including at least one of the real relative convergence and the false relative convergence or both as relative measurement values for binocular vision to the manufacturing computer.
- the manufacturing computer has the following functions.
- a data input unit for inputting data including relative congestion transmitted from the ordering computer, and binocular visual acuity function calculation for calculating optical performance values for a plurality of target evaluation points based on the input data
- an evaluation function optimization unit that optimizes the binocular visual function using a function obtained by adding the binocular visual acuity function having a relative measurement value as a factor at each evaluation point of the target, and convergence by this evaluation function
- An evaluation function evaluation unit that evaluates whether the condition is satisfied or not, and a design data correction unit that corrects the design data of the spectacle lens when the value of the binocular visual acuity function does not reach a predetermined visual acuity as a result of evaluation in the evaluation function evaluation unit
- an evaluation result evaluation unit of the present invention for the evaluation result of each evaluation point of the spectacle lens, the final optical design value determination unit to determine the design data, and the final optical design value determination unit
- Design data output section for supplying the meter data to a device for lens processing, a configuration having.
- the spectacle lens according to the present invention is manufactured by the above-described spectacle lens manufacturing method and system according to the present invention.
- the relative measurement value is used as a threshold value, and it is classified into a non-fusion region and a fusion region.
- the value of the binocular visual acuity function is a value obtained by subtracting the binocular visual acuity improvement value from the smaller value of the visual acuity function value of the left and right one eye.
- a convergence aberration defined as a difference from a convergence angle reference value that is a convergence angle of the line of sight.
- 1/3 of the relative measured value or the imaginary relative adjusted value of the relative measurement values is set as a threshold value, and the relative error is adjusted between the frequency error obtained at the evaluation point and the threshold value. It is also possible to classify the image into a non-fusion region and a fusion region as the determination condition.
- the convergence angle at the evaluation point and the convergence angle at the design reference point is obtained, and for this convergence aberration, the vertical component that is the projection component to the plane parallel to the median plane is included, including the midline of the gaze line from which the convergence angle of the evaluation point is obtained. It is desirable to classify the value of the surface vertical component value of the convergence aberration and the threshold value into the non-fusion region and the fusion region as determination conditions for vertical fusion. When the above conditions for relative convergence, relative adjustment, and vertical fusion are satisfied at the same time, the conditions for the kinetic fusion are met and within the kinetic fusion area. It is desirable.
- Relative measurement values are described in, for example, Masaaki Emoto, “Relationship between Vergence Convergence and Convergence of Binocular Eyes in Stereoscopic Viewing and Visual Fatigue” (Visual Science Vol. 24, No. 1, 2003 (p13)).
- Masaaki Emoto “Relationship between Vergence Convergence and Convergence of Binocular Eyes in Stereoscopic Viewing and Visual Fatigue” (Visual Science Vol. 24, No. 1, 2003 (p13)).
- a small relative measurement value causes fatigue.
- the inventor noticed this, and conversely realized that a spectacle lens designed not to exceed the threshold of the relative measurement value is comfortable for the wearer. For this reason, in the present invention, a relative measurement value is obtained from the orderer in accordance with the lens to be designed.
- the relative measurement value is only one or both of actual relative congestion and imaginary relative congestion
- the other value is calculated from either or both of actual relative congestion and imaginary relative congestion.
- the relative measurement value may be approximated by calculation from the age as described later, and using this as the relative measurement value also belongs to the category of the present invention.
- the binocular vision function of the spectacle lens can be improved by incorporating the relative measurement value obtained in this way into the evaluation function as described above and performing the evaluation and design.
- a spectacle lens with an improved binocular vision function by using a binocular visual acuity function incorporating a relative measurement value that is a measurement value related to the binocular vision function.
- FIG. 11 used in the embodiment of the spectacle lens evaluation method of the present invention is a description of the convergence aberration defined by the image side in the surface vertical direction when the object-eyeglass lens-eyeball system is viewed from the direction perpendicular to the median plane.
- FIG. It is a figure which shows the convergence angle by the side of the image in the evaluation point in the object-spectacle lens-eyeball system used for embodiment of the evaluation method of the spectacle lens of this invention.
- FIG. 1 It is a figure which shows the convergence angle by the side of the object in the evaluation point in the object-spectacle lens-eyeball system used for embodiment of the evaluation method of the spectacle lens of this invention. It is a figure which shows the structure of the object-spectacle lens-eyeball system in a comparative example. It is a figure which shows the surface parallel component of the convergence aberration of Example 1 in the evaluation method of the spectacle lens of this invention. It is a figure which shows the surface perpendicular component of the convergence aberration of Example 1 in the evaluation method of the spectacle lens of this invention. It is a figure which shows the fixation field through the spectacle lens of both eyes of Example 1 in the evaluation method of the spectacle lens of this invention.
- the design reference point of the lens is set in the frame in accordance with the distance between the pupils in the horizontal direction and slightly below the pupil in the vertical direction (about 10 degrees and about 4 mm about the rotation center).
- the design is not individually made, and a general purpose lens is substituted. Therefore, in the prescription for near-field lenses, a design reference point is provided at the intersection of the gaze line from the target distance (25 to 50 cm) and the lens, and the distance in the horizontal direction is slightly shorter (about 2 to 5 mm). (This is also referred to as the near-to-pupil distance, and may be abbreviated as NPD).
- Non-Patent Document 1 Tomohashi Takahashi, “Lens Design”, Tokai University Press (1994)
- Non-Patent Document 2 Takeshi2Noguchi et al, "ACTIVE OPTICS EXPERRIMENTS I, SHACK-HARTMAN WAVE-FRONT ANALYZER TO MESURE F / 5 MIRRORS", Publ. Natl. Astrron. Obs. Japan Vol. 1989), pp. 49-55.
- lens measuring instruments that calculate aberrations (power errors, astigmatism, etc.) from wavefront measurements after passing through spectacle lenses are used for lens design.
- the refractive power of the lens is subtracted by the refractive power of the eyeball so that the object of the far distance can be clearly seen at the design reference point (usually, the lens position when the eyeball is seen through the lens).
- the lens compensates for the insufficient refractive power.
- the aberration at that time is zero.
- the astigmatism when the astigmatism is in the eyeball at the design reference point, it coincides with the astigmatism axis of the lens.
- the astigmatism axis is orthogonal to the principal ray and is the principal meridian of its refractive power. Similar to the eyeball, this principal ray is the path of the ray from the object through the spectacle lens to the center of eyeball rotation.
- the eyeball rotates according to the listing rule, unlike the normal coaxial optical system, the eyeglasses are fixed, and the direction of the eyeball changes relative to the eyeglasses.
- the refractive power of the lens is slightly different from the design reference point due to the nature of the lens. Even at that time, the refractive power of the lens is subtracted by the refractive power of the eyeball. The subtracted value is the aberration in the lens-eyeball system.
- the power error is the average of aberration A and aberration B
- the residual astigmatism is aberration A and aberration A. This is the difference in aberration B.
- chromatic aberration is expressed as 100 ⁇ tan ⁇ / ⁇ , where ⁇ is the difference in angle between the principal ray from the center of eyeball rotation to the rear surface of the lens and the principal ray from the lens front surface to the object, and Abbe number ⁇ .
- FIG. 1 is a schematic configuration diagram of a spectacle lens manufacturing system according to the present embodiment.
- the spectacle store 100 side inputs a measurement device 101 that measures the eyesight and relative measurement value of the spectacle lens orderer, and various types of information including values measured by the measurement device.
- an ordering computer 102 having a function of performing processing necessary for ordering eyeglass lenses.
- the lens manufacturer 200 on the order receiving side is provided with a manufacturing computer 201 connected to a communication line 300 such as the Internet in order to receive information output from the ordering computer 102.
- the manufacturing-side computer 201 has a function of performing processing necessary for ordering spectacle lenses and also has a function of performing a spectacle lens design method described later. That is, the information required for the design of the spectacle lens ordered from the ordering computer 102 includes at least one of the actual relative vergence and / or the imaginary relative vergence among the relative measurement values in addition to the measurement value relating to visual acuity. Includes measurements. When the relative measurement value is not included, information on the orderer capable of roughly deriving the relative measurement value such as age is included.
- the surface is expressed by a general free-form surface such as NURBS (Non-Uniform Rational B-Spline) or a known mathematical expression.
- NURBS Non-Uniform Rational B-Spline
- the thickness and arrangement are expressed by appropriate coefficients.
- the lens shape and the object are defined by coefficients that are constituent elements.
- known parameters are entered into the computer. Known parameters include target, target-lens-eyeball arrangement relationship, constraint conditions (for example, a predetermined prescription value at the design reference point, the thickness does not become a negative value, etc.), and lens aberration as factors. There are functions.
- binocular visual acuity function used as an evaluation function for optimization calculation, a description regarding binocular vision will be given.
- Non-Patent Document 3 Mosato Wakakura, Osamu Mimura, “All about Vision and Eye Movement”, Medical View (2007), p147-p148, p140-143
- Patent Document 4 Howard, I. P. and Rogers, B. J., "Binocular vision and stereopsis", Chapter2, New York Oxford Press, (1995), p1-736).
- Non-Patent Document 3 p142 discloses that fusion is classified into motility and sensory.
- Non-Patent Document 4 has a detailed explanation in general.
- Non-Patent Document 3 classifies the structure so that fusion is possible when simultaneous viewing is possible and stereoscopic viewing is possible when fusion is possible. Since the present invention focuses on fusion, description of other functions is omitted. However, it is clearly stated that stereoscopic vision, which is the highest function of binocular vision without fusion, cannot be performed. Fusion is a visual function that integrates visual information input separately to both eyes into one. Integrating objects into one without moving the eyeball is a sensory fusion.
- Donders line A straight line at 45 degrees from the origin of the Donders diagram is called a Donders line.
- This straight line represents the accommodation-convergence linkage when a naked eye subject without perspective or oblique view is looking at the subject.
- the congestion limit value is called a Donders curve.
- the relative measurement value is significantly less than the standard value, it causes visual fatigue, the convergence is easier to measure than the adjustment, and the Donders line (the slope is expressed in the AC / C ratio).
- Non-patent document 7 (Kazuhiko Ukai, "Effects of stereo images on living organisms: What happens when stimulation of adjustment / congestion is inconsistent?" Ka ”vision, vol.17, No.2, p113-122).
- Realistic vergence and imaginary relative vergence are usually expressed by prism diopters.
- it when learning the definition of Donders, it is expressed as a diopter value. Therefore, it may be called real relative convergence force or imaginary relative convergence force.
- the real relative convergence and the imaginary relative convergence are unified and expressed.
- the relative adjustment described later is also expressed as a diopter value when learning the definition of Donders. Therefore, it may be called real relative accommodation force and imaginary relative accommodation force. Since there is no essential difference with respect to this, in the present invention, the real relative adjustment and the imaginary relative adjustment are unified and expressed.
- the relative adjustment described above is described in the specification of PCT / JP2008 / 069791 and the like by the present applicant.
- the specification describes the relative adjustment that is an individual element and a method of obtaining an approximate value of the relative adjustment from the age as a visual acuity function.
- Relative adjustment is a type of adjustment and exhibits properties similar to adjustment. Regarding the adjustment, the following contents are known.
- the adjustment does not work exactly to the limit and does not work at all when the limit is exceeded. For example, the accuracy is inferior in the area near the adjustment far point and the adjustment near point. Also, it is ambiguous where the limit is. For this reason, when viewing from a distance, the subject is often in focus slightly closer to the target.
- FIG. 37 compares the results of a rectangular pattern and a random dot pattern as objects.
- FIG. 38 the relationship between the horizontal retinal image difference and the perceptual depth is shown in FIG. 38 (p86 of Non-Patent Document 10).
- the horizontal axis represents the binocular retinal image difference that is the difference between the binocular parallaxes in the horizontal direction
- the vertical axis represents the perceptual depth with respect to the binocular retinal image difference.
- the maximum depth and the fusion limit are different values, it can be said that fusion and stereoscopic vision are different physiological phenomena.
- the maximum depth and the fusion limit have individual differences in values, and change depending on conditions such as spatial frequency and presentation time. Therefore, approximately, the binocular retinal image difference corresponding to the range from the fusion limit to the maximum depth can be treated as the “Panum fusion region”.
- Non-Patent Documents 1 to 15 cited as references in this specification has studied the binocular vision function when wearing spectacles.
- FIG. 2 is a functional block diagram for explaining an outline of functions of the manufacturing computer 201 that is the core of the eyeglass lens manufacturing system of the present embodiment.
- the manufacturing computer 201 has a data input unit 203 for inputting various data transmitted from the ordering computer 102, and a binocular visual acuity function including a relative measurement value as a factor based on the input data.
- the binocular visual acuity function calculation unit 204 calculates the visual functions of the left and right one eyes at each target evaluation point.
- the binocular visual acuity function calculation unit 204 obtains optical performance values such as power error and residual astigmatism and convergence aberration described later for each evaluation point.
- the binocular visual acuity function calculation unit 204 calculates the binocular visual acuity function by substituting the calculated values and the input data received by the data input unit 203 into a formula for a binocular visual acuity function described later.
- the evaluation function optimizing unit 205 adds the calculated binocular visual acuity function and obtains an optimal optical performance value at each evaluation point from the evaluation function as an evaluation function.
- the visual acuity deterioration value is calculated using the Peters diagram
- the astigmatism power and the spherical power are both 0.
- FIG. 39 which shows a measurement at 5-15 years of age
- a normalized visual acuity 20/20 is obtained.
- the aberration A is 1.00 and the aberration B is 2.00 around the lens
- the astigmatism power is 2.00 to 1.00
- the spherical power is 1.00.
- FIG. 43 which shows a visual acuity function obtained by converting the Peters diagram to the origin symmetry, 20/80 visual acuity deterioration can be read.
- Non-Patent Document 5 describes quantitative data regarding visual acuity (binocular visual acuity) with both eyes, which is one of the binocular visual functions.
- the visual acuity seen with both eyes is generally equal to or slightly better than that of the better eye. If both eyes are the same, binocular vision is more than single vision. It increases by approximately 10%.
- This 10% is a numerical value in decimal point visual acuity that has been used since that time (1925, Japan). Although it is an approximate value, it has followed 10% as the value of the increase ratio of binocular vision to monocular vision in Japanese ophthalmological books. Therefore, it is effective even when the present application is filed.
- the optical design value determination unit 208 determines whether or not the sensory fusion range near the lens design reference point satisfies a predetermined condition based on the determined optical design value of the entire lens surface. Determine whether. If the predetermined condition is not satisfied (when the determination in the sixth step S6 is “NO”), the flow chart is terminated after predetermined error processing because it is not suitable for the spectacle lens and cannot be designed. When the predetermined condition is satisfied (when the determination in the sixth step S6 is “YES”), the process proceeds to the seventh step S7.
- the optical design value determination unit 208 determines the evaluation based on the binocular visual acuity function of the spectacle lens and the spectacle lens shape. It will be described that binocular vision can be improved through the above steps.
- the three types of binocular vision function, simultaneous vision, fusion, and stereoscopic vision, and binocular vision, the first three are capable of fusion when simultaneous vision is possible, and three-dimensional when fusion is possible It has a structure that can be seen.
- the fusion has a structure that enables sensory fusion when motor fusion is possible.
- binocular vision is related to simultaneous vision, fusion, and stereoscopic vision. This relationship will be described with reference to FIG.
- a single focus lens has a single prescription convergence angle
- a progressive lens or the like desirably has two distances (for example, a convergence angle of 0, 40 cm, a convergence angle of 1 / 0.4) is a highly accurate measurement value.
- the reason for "preferably" is that, in the case of a relative measurement value at one distance in a progressive lens, a certain degree of age is estimated from the added force, and the relative measurement value at a distance from there is This is because it is calculated by estimation calculation of a relative measurement value from age described later.
- other relative measurements from either real or imaginary relative congestion or both under the following assumptions: calculate.
- the data for calculating the ratio is not limited to the Donders diagram by Hatada shown in FIG. 34.
- the accuracy is more accurate. If there is a material with high, you may adopt it.
- the actual relative adjustment at the convergence angle 0 in FIG. 34 is about ⁇ 2D (diopter).
- ratio (actual relative adjustment calculated above) / ( ⁇ 2).
- the upper limit of the Donders line and the Donders curve is determined by the above-mentioned known age-adjustment relationship.
- Panam's fusion region and depth of eyeball focus are considered.
- the quantitative measurement requires precise and careful measurement depending on the fusion stimulation condition as described above.
- the setting method can be arbitrarily selected from known measurement values in consideration of the use conditions of the spectacle lens at the designer's discretion.
- the horizontal direction of the Panam fusion region is appropriately between the fusion limit of binocular retinal image differences and the maximum depth.
- the horizontal direction judging from FIG. 38, half of the binocular retinal image difference is appropriate.
- 0.06 to 0.3 diopter width is suitable as a value derived from the horizontal retinal image differences 15 'to 60' from the representative values of the measurement results shown in Table 2.
- the vertical retinal image difference is suitably 4 'to 30'. That is, the threshold value for sensory fusion may be 0.06 to 0.3 diopter in the horizontal direction and 0.016 to 0.15 diopter in the vertical direction. Even in the case of strabismus, since the relative measurement value is measured in a corrected state in principle, the present invention described above can be applied as it is.
- FIG. 44 which is “FIG. 2” of Patent Document 1, and “FIG. 1” of Patent Document 2
- the eyeglass design in which the object is a flat surface is one of the object proposals to be adopted as an eyeglass lens for reading a stretched newspaper, letters on a wall, or the like.
- the target is arbitrarily selected by the designer.
- the distance from the binocular ball is greatly different from the fixed viewpoint other than the fixed viewpoint in the target, so that the power error from the fixed viewpoint, the residual astigmatism, and the prism are difficult to correct simultaneously. There is. As a result, the prism becomes larger. This does not give good results for binocular vision function.
- an arbitrary position of the object 4 is a function of an angle with respect to the midline 6 from the origin 1 of the system.
- This angle ⁇ is defined as the binocular viewing direction.
- the binocular viewing direction ⁇ may be divided into horizontal and vertical directions.
- a straight line connecting the rotation centers of both eyes is defined as an interocular line segment 2.
- the spectacle lens is usually placed between a fixed viewpoint far from the prescription value and the eyeball rotation centers 1L and 1R at that time.
- the spectacle lens has a prescription value at the lens design reference point, and has an arbitrary inclination (forward inclination angle, tilt angle) and eccentricity (vertical eccentricity, horizontal eccentricity) with respect to the horizontal plane and the frontal plane.
- the distance from the rear vertex of the lens to the center of eyeball rotation is usually 27 mm, or from 24 mm to 36 mm, as described in, for example, line 4-5 from the lower right column of page 2 of JP-B-42-9416. is there. It is better to design 27 ⁇ 1 mm or more as an individual element.
- the eyeball rotation centers 1L and 1R move when rotating up and down or left and right, and the distance from the rotation center to the corneal apex changes.
- the left and right eyeballs converge due to adjustment-congestion when viewed from the near side, and the rotation centers 1L and 1R move at that time.
- a phenomenon similar to that of Hering's law is similar in that it has the property of responding to an equal amount of binocular equivalence as in the case of light reflection even when the refractive power of the left and right eyes is different.
- the prescription values are spherical power, astigmatism power, astigmatism axis, prism, prism axis, and additional force.
- the prescription value is used as a reference for the aberration by definition of the difference from the reference.
- FIG. 11 shows a state seen from above the binocular eyes 10L and 10R. In FIG. 11, parts corresponding to those in FIG.
- a value corresponding to the lens power, that is, minus is displayed.
- the prism is inserted in the base-out direction, the convergence limit value is measured, and the prism power and direction are displayed, that is, the unit is displayed in the base-out with the prism diopter.
- the code is convenient for the measurer.
- the vertical fusion is the ability to move the eyeball in the vertical direction, and the direction of spreading is not observed. The measurement of vertical fusion has only a few examples in the past, and there is no standard value of measurement values.
- the optical values to a reference along the sight line 13L 0 and 13R 0 described in Figure 11, the difference between the gaze line 13L, the optical values along the 13R shown in FIG. 15 is an aberration. That is, on the basis of the spherical power, the astigmatic power, the astigmatic axis, and the convergence angle calculated in the second step S2, in the third step S3, the power error from the difference between the spherical power, the astigmatic power, and the astigmatic axis is determined. Point aberrations are calculated. Regarding the convergence angle, as described above, the convergence angle (surface) formed by the gaze lines 13L and 13R emitted from the both eyes 10L and 10R with reference to the convergence angle reference value obtained in the second step S2.
- the eyeball cannot be rotated according to the gaze calculation method of the present invention.
- the vertical movement of the motor fusion is possible by movement, and it is possible by sensation in the plane perpendicular direction of the fusion area of Panam. Fusion in the direction perpendicular to the plane is possible involuntarily with a threshold. Therefore, there is no contradiction between the convergence aberration in the vertical direction and the actual gaze line due to the gaze line by the ray tracing method.
- the vertical fusion above the threshold is the surface vertical component of the convergence aberration, it cannot be realized.
- the calculation method based on the gaze by the ray tracing method in the present invention is a means for determining whether it is feasible or not.
- non-fusion and fusion areas are classified using relative measured values.
- the horizontal axis is relative convergence
- the vertical axis is a vertical fusion of a motility fusion
- the depth axis is a relative adjustment.
- the actual relative convergence and the imaginary relative convergence are set as threshold values and compared with the surface parallel component of the convergence aberration. If the plane parallel component of the convergence aberration is within the threshold values of the real relative convergence and the imaginary relative convergence, the horizontal axis is within the dynamic fusion area.
- the spectacle lens according to the embodiment of the present invention can be provided by performing normal lens processing based on the optical design value.
- FIG. 20 shows binocular visual acuity function values.
- the unit is logMAR unit. From FIG. 18 and FIG. 19, both the plane parallel component and the plane vertical component of the convergence aberration are extremely small at about 0.005 ⁇ or less in most regions. Therefore, the visual field shown in FIG. 20 occupies almost the entire region in the binocular viewing direction with the sensory fusion region.
- the binocular visual acuity function shown in FIG. 21 the central portion close to the design reference point is not shown here, but the visual acuity function is 0 for both the left and right eyes, and is negative because the binocular visual acuity condition is satisfied. It is a value.
- This example is characterized in that the surface parallel direction of the convergence aberration shown in FIG. 26 is very large compared to the surface vertical direction shown in FIG. Therefore, there is almost no moving fusion range (black region) of the gazing field shown in FIG. Therefore, it is not so much that you are looking forward, but you can expect to feel awkward if you walk or look at the eyes without moving your head to see the surroundings. This is because the range in which there is no sense of depth in the binocular viewing direction is large.
- the evaluation method of the present invention makes it possible to quantify the sense of incongruity as a decrease in the range of mobility fusion.
- the binocular visual acuity function shown in FIG. 29 the visual acuity reduction can be seen in the central portion as compared with the first embodiment. The reason is that there is a large astigmatism in the central part and the visual acuity is deteriorated.
Abstract
Description
〔1〕眼鏡レンズの製造システム、製造方法の実施の形態
〔2〕眼鏡レンズの設計方法の実施の形態
〔3〕実施例
先ず、本発明の眼鏡レンズの製造システム及び製造方法の実施の形態について説明する。図1は、本実施形態に係る眼鏡レンズの製造システムの概略構成図である。図1に示すように、このシステム500では、眼鏡店100側は、眼鏡レンズ注文者の視力や相対測定値を測定する測定装置101と、測定装置によって測定された値を含む各種の情報を入力し、眼鏡レンズの発注に必要な処理を行う機能を有する発注側コンピュータ102とを有する。
次に、上述した製造側コンピュータ201におけるデータ入力部、両眼視力関数計算部、評価関数最適化部について詳細に説明する。上述の機能のうち、通信、計算における光線追跡等、最適化に関しては既述したため新たな説明は省く。
(1)設計方法の各ステップの概要
本実施形態にかかる眼鏡レンズの設計方法を実施するフローチャートの一例を図3に示す。先ず、第0のステップS0において、データ入力部203による各種データの入力が行われる。すなわちレンズの素材に関するデータと、処方に関する仕様に基づく形状データと、中心厚と、眼や顔及びフレームの形状に関するデータと、相対測定値が入力される。
(2)第0のステップS0の詳細な説明(相対測定値の算出工程)
発注者から得た相対測定値についてさらに説明する。今後眼鏡を装用時、眼鏡と眼球回転中心の間を像側、眼鏡と対象の間を対象側と呼ぶ。像側と対象側の相対測定値は、それぞれ近似的に比例係数がレンズ度数に依存する比例関係にあるため、対象側の値はレンズの形状により変化する。そのため、本発明では、像側の注視線による相対測定値がより望ましい。
次に、第1のステップS1として、対象-眼鏡レンズ-両眼球システムを設定する。対象は、基本的には設計者の任意である。そのため設計者による任意の対象で眼鏡レンズ性能が高くなるように設計されている。いかなる対象であっても本発明を限定するものではない。本発明の特徴を明確にするため対象について詳述する。
第2のステップS2では、両眼の対象-レンズ-両眼球システムの眼鏡の設計基準点を以下に記述する収差算出の基準にするために、設計基準点における所定の処方値が出るようにレンズ形状を設定する。なお、設計基準点とは通常、処方値が出るところを示し、眼鏡レンズ前面にあるが、後面に設定する場合もある。累進レンズでは、設計基準点が、遠方度数測定点、近方度数測定点、プリズム測定点等別々のレンズ位置に分離していることが通常である。また単焦点レンズで近方レンズの場合も、原則、対象上の固視点から近方度数測定点を通って眼球回転中心にいたる主光線で光学計算の諸量を計算する。その一方で、簡易的に瞳孔間距離(PDという)から2mm減らして近見PDとして視点とし処方するときもある。
θCH0=θHR0+θHL0
θCV0=θVR0+θVL0
となる。通常θCV0は0であり、0となるようにレンズ形状、設計基準点を設定する。
なお、像側での定義同様、対象側でも、
θCH0’=θHR0’+θHL0’
θCV0’=θVR0’+θVL0’
が得られる。
第2のステップS2で説明した両眼システムの光学計算等の定義をさらに詳述し任意のレンズ評価点の光学評価を行う。本発明では対象距離が無限大の両眼システムは、近方両眼システムの対象距離を無限大にしたものと定義した。従って、図示が可能となる。任意の両眼視方向の両眼システムの概略構成を図15に示す。図15を参照して光学計算の詳細を説明する。両眼システムの原点1から任意の両眼視方向の対象の任意の位置を対象の評価点22とする。光線追跡法の使用により左右両眼回転中心1L、1Rから発し左右眼鏡レンズ11L、11Rの評価点11NL、11NRを通過して屈折し、対象の評価点22を通る注視線のうち、像側の注視線の延長線を注視線13L、13Rとする。なお、図示の例では、注視線13L、13Rの交点22’が対象球面5の外側に位置する場合を示す。注視線13L’と13R’との交点が1回の試行で評価点22を通過できなくても、眼球回転中心1L、1Rから発する光線の角度を少しずつ変更し、評価点22で収束する光線を必要な精度で計算することが可能である。
θCH=θHR+θHL
同様に、評価点22の面垂直成分の輻輳角θCVは、下記のように定義できる。
θCV=θVR+θVL
ここで、注視線13L及び13Rの中線26と注視線13L及び13Rが挟む角の注視線13L及び13Rの中線を含み正中面に垂直な面に対し平行な方向の成分である面平行成分をθHL、θHRとし、垂直方向は同様に中線を含み正中面に平行な面に対して平行な方向の成分である面垂直成分をθVL、θVRとする。
(輻輳収差の面平行成分):θCH-θCH0
(輻輳収差の面垂直成分):θCV-θCV0
と表わされる。
θCH’=θHR’+θHL’
θCV’=θVR’+θVL’
より、
(輻輳収差の面平行成分):θCH’-θCH0’
(輻輳収差の面垂直成分):θCV’-θCV0’
と表わされる。
a.両眼視の運動法則であるヘリングの等神経支配法則のバーゼンス(異側性両眼運動)、すなわち輻輳運動より導かれる生理学的知見に基づいた定義であること。
b.両眼視方向により定義された任意の対象が可能なこと。
c.評価基準が1つであるために、視野全域で同一基準の評価ができること。
d.成分に分割した場合、面平行成分、面垂直成分の考案により水平面から変位した場合に生理学的に適切な定義となっていること。
e.対象の位置を平面上の定義ではなく立体的な定義とすること。
ΔPH=L×tan(αR+ΔαR)-L×tan(αL+ΔαL)-PD
と表わされる。また両眼球回転中心間距離PDは、(αR)、(αL)、Lを使うと以下の関係を持つ。
PD=L×tan(αR)-L×tan(αL)
水平方向差は、水平方向位置差を対象距離Lで割ると記載されているため、次式が成立する。
水平方向差=tan(αR+ΔαR)-tan(αL+ΔαL)-PD/L
PDを代入すると、
水平方向差=tan(αR+ΔαR)-tan(αL+ΔαL)-(tan(αR)-tan(αL))
となる。
水平方向差≒ΔαR-ΔαL
したがって、特許文献3の「水平方向差」は、視野中心部のごく限られた狭小領域では、注視線LrとLlとがなす輻輳角を基準にして、同一面59の点Pを見たときの輻輳角の変化を表現している。しかし、これは、(ΔαR),(ΔαL)が大きい中心部以外の領域では輻輳角とは無関係の量となり、いわば生理学的な根拠を持たない値となる。
1.P点とq点がツァイスの説明図の様に同一の対象面59になくてはならない。そのため、対象面が前額面と平行な平面以外、水平方向差は、基準点が対象までの距離ごとに変化してレンズ全体の評価法となりえない。すなわち収差の性質はない。
2.対象がツァイスのように同一対象面59であった場合は単一の基準となり、収差の性質を持つ。ところが、(αR)、(αL),(ΔαR),(ΔαL)が大きくなった場合、タンジェントには角度に対する非線形の性質があるため、角度の差ΔαR-ΔαLで表現される輻輳角と合わなくなる。そのため、水平方向差は、視野周辺部で生理学的な根拠を持たない。
3.同様のことであるが、注視線54,55が水平面から偏位したとき本来の輻輳角とも異なってくる。
以上説明した特許文献3の定義によれば、対象全面一律の定義となりえず、視野周辺部で生理学的な根拠を持たない評価関数となる。根拠のない不明瞭な定義を用いて両眼視機能の評価をするのは不適切である。
θ+μ/2=MR
θ-μ/2=ML
すると眼球の開散、輻輳限界内で任意のMR、MLがθ、μで実現可能となる。すなわち、同側性両眼運動と異側性両眼運動により左右眼球を任意に動かすことにより、面平行方向では評価点22を通ることが可能である。
第3のステップS3で得られた度数誤差と輻輳収差がそれぞれ相対調節、相対輻輳、垂直融像よせ以内か否かを判断する。なお、度数誤差の単位はディオプターを用いる。また本発明で定義する輻輳収差は輻輳角単位とし、メーター角(M.A.)や分単位(arcmin)、又はプリズムディオプター(記号ではΔ)等を使用する。度数誤差と輻輳収差が相対調節、相対輻輳、垂直融像よせ以内に収まる場合は、運動性融像か感覚性融像であり、融像が可能となる。
第4のステップS4では、評価点において、融像不可、運動性融像、感覚性融像の分類を行った。第5のステップS5では、相対測定値を使用して左右眼それぞれの視力関数を計算する。
0.25≦ak≦0.65
0.7≦bk≦1.1
であることが読み取れる。
また、ckは実験により算出された値であり、
0.2≦ck≦1.2
である。PEi、ASi、Piは、i番目の注視線の度数誤差、残留非点収差、プリズムである。νはレンズ素材のアッベ数である。
ここでは、第5のステップS5で得られたレンズ形状を吟味する。特にレンズ設計基準点の付近での感覚性融像の範囲が小さいと、常時眼球が運動しなくてはならず、休むことがない。そのため視覚疲労が起こりやすく、眼鏡として適切ではない。具体的には両眼視方向で例えば約3度以上である。レンズに投影すると設計標準点を中心に直径で例えば約5mm以上となる。眼鏡レンズの設計標準点の安定した処方測定でもその程度の広さは必要である。したがって、例えば3度、または5mmの条件を満たさない場合(第6のステップS6における判断が「NO」の場合)は、眼鏡レンズとして適さないと判断し設計不可とし、本フローチャートが終了する。当該条件を満たしている場合(第6のステップS6における判断が「YES」の場合)は、処理を第7のステップS7に進める。第7のステップS7では、左右の眼鏡レンズの形状が決定する。
次に、上記実施の形態に係る眼鏡レンズ評価方法で評価した実施例について説明する。
(1)実施例1
この例では、左右眼鏡レンズとも球面度数-4D、乱視度数0Dとする場合の両眼視力に関連する計算例を挙げる。計算結果を図18~図21に示す。この例は、単焦点眼鏡レンズの評価の例であり、最適化の繰り返し計算が行われていない。対象は、上述の本実施形態において説明した座標系における視方向の原点1を中心とする半径無限大の眼前半球面とした。すなわち遠方視で評価したものである。眼鏡レンズは汎用の両面非球面レンズであり、特許文献2による視力関数により良く補正されている。本発明による評価方法の効果を明確にするため、レンズの前傾角、あおり角、レンズの偏心は0にしている。角膜頂点から眼球回転中心までの距離は27.7mmであり、アッベ数32、レンズ径は75mm、瞳孔間距離は62mmとした。相対測定値は30才平均値を使用した。
実施例2として、一般に不同視の定義(左右―2D以上)とされる眼鏡レンズの評価を行なった。この例では、右用眼鏡レンズの球面度数-4D、乱視度数0Dとし、すなわち右用眼鏡レンズは上記実施例1で使用したレンズと同じとした。一方、左用眼鏡レンズは球面度数-6D、乱視度数0Dとし、その他の条件は、上記実施例1と同じとした。この例でも眼鏡レンズの評価の例であり、最適化の繰り返し計算は行っていない。図22は面平行方向の輻輳収差、図23は面垂直方向の輻輳収差、図24は両眼の眼鏡レンズを通した注視野、図25は両眼視力関数値であり、単位はそれぞれ図18~図21と同様である。
実施例3として、フレームにあおり角がある場合の輻輳収差を計算した。球面度数、乱視度数やその他の条件は、上記実施例1で使用したレンズと同じとし、あおり角の効果がどの程度あるか評価するために、あおり角を20度付けている例である。この例でも眼鏡レンズの評価の例であり、最適化の繰り返し計算は行っていない。図26は面平行方向の輻輳収差、図27は面垂直方向の輻輳収差、図28は両眼の眼鏡レンズを通した注視野、図29は両眼視力関数値であり、単位はそれぞれ図18~図21と同様である。
実施例4として、前記実施例3と球面度数、乱視度数、あおり角の条件は同じとした。ただし、両眼視力関数を全レンズ評価点で加算した関数を評価関数として、レンズ形状の最適化を計っている。すなわち、第2のステップS2~第5のステップS5の繰り返し計算を行い、眼鏡レンズの凸、凹形状を変えて評価関数の最小化を行った。この結果を図30~図33に示す。図30は面平行方向の輻輳収差、図31は面垂直方向の輻輳収差、図32は両眼の眼鏡レンズを通した注視野、図33は両眼視力関数値であり、単位はそれぞれ図17~図20と同様である。
Claims (12)
- 両眼視機能に係る個別の測定値である実性相対輻輳、虚性相対輻輳、実性相対調節、虚性相対調節、垂直融像よせを相対測定値とするとき、少なくとも前記実性相対輻輳か虚性相対輻輳のいずれか又は両方を個別の相対測定値として含み、
前記相対測定値を因子として含む両眼視力関数を対象の各評価点で加算した関数を最適化計算時の評価関数とすることにより両眼視機能を最適化して、眼鏡レンズの光学設計値を決定する
眼鏡レンズの設計方法。 - 前記相対測定値として、少なくとも前記実性相対調節か前記虚性相対調節のいずれか又は両方を含む請求項1に記載の眼鏡レンズの設計方法。
- 前記相対測定値として、垂直融像よせを含む請求項1又は請求項2に記載の眼鏡レンズの設計方法。
- 前記相対測定値を因子として含む両眼視力関数の閾値として、融像不可域と融像域とに分類し、前記融像不可域は前記左右片眼の視力関数値の小さい方の値を前記両眼視力関数とし、前記融像域では前記左右片眼の視力関数値の小さい方の値から両眼視力向上値を減算した値を前記両眼視力関数とする請求項1から請求項3のいずれか1項に記載の眼鏡レンズの設計方法。
- 前記融像不可域と前記融像域とに分類するにあたって、
横軸を輻輳角、縦軸を運動性融像の垂直融像よせ、奥行き軸を調節とした3次元空間を想定したとき、前記相対測定値を閾値とする閉曲面の外と内を判定基準として前記融像不可域と前記融像域に分類する請求項4に記載の眼鏡レンズの設計方法。 - 前記輻輳角の軸において、前記相対測定値のうちの実性相対輻輳値又は虚性相対輻輳値の1/3を輻輳角の運動性融像閾値とし、
評価点の輻輳角と、前記眼鏡レンズの設計基準点を通過する注視線の輻輳角である輻輳角基準値との差として定義する輻輳収差を求め、
前記輻輳収差について、前記評価点の輻輳角を求めた注視線の中線を含み、正中面と垂直な面への射影成分である面平行成分を求め、
前記輻輳収差の面平行成分の値と前記輻輳角の運動性融像閾値との大小を相対輻輳の運動性融像の判定条件とし、
前記調節の軸において、前記相対測定値のうちの実性相対調節値又は虚性相対調節値の1/3を調節の運動性融像閾値とし、
前記評価点で求めた平均度数誤差と前記調節の運動性融像閾値との大小を相対調節の運動性融像の判定条件とし、
前記運動性融像の垂直融像よせの軸において、前記相対測定値のうちの垂直融像よせの1/3を垂直融像よせの運動性融像閾値とし、
前記輻輳収差について、前記評価点の輻輳角を求めた注視線の中線を含み、正中面と平行な面への射影成分である面垂直成分を求め、
前記輻輳収差の面垂直成分の値と前記垂直融像よせの運動性融像閾値との大小を垂直融像よせの運動性融像の判定条件として、
前記相対輻輳、前記相対調節、前記垂直融像よせにおける全ての運動性融像の判定条件を同時に満たしたとき運動性融像の条件を満たす運動性融像域以内と分類し、一つでも前記運動性融像の判定条件を満たさない場合は運動性融像不可域と分類する請求項5に記載の眼鏡レンズの設計方法。 - 前記輻輳角の軸において、パナムの融合領域の正中面と垂直な面平行成分を輻輳角の感覚性融像閾値とし、
評価点の輻輳角と、前記眼鏡レンズの設計基準点を通過する注視線の輻輳角である輻輳角基準値との差として定義する輻輳収差を求め、
前記輻輳収差について、前記評価点の輻輳角を求めた前記注視線の中線を含み、正中面と垂直な面への射影成分である面平行成分を求め、
前記輻輳収差の面平行成分の値と前記輻輳角の感覚性融像閾値との大小を相対輻輳の感覚性融像の判定条件とし、
前記調節の軸において、焦点深度を調節の感覚性融像閾値とし、
前記評価点における平均度数誤差と前記調節の感覚性融像閾値との大小を相対調節の感覚性融像の判定条件とし、
前記運動性融像の垂直融像よせの軸において、パナムの融合領域の正中面と平行な面垂直成分を垂直融像よせの感覚性融像閾値とし、
前記輻輳収差について、前記評価点の輻輳角を求めた前記注視線の中線を含み、正中面と平行な面への射影成分である面垂直成分を求め、
前記輻輳収差の面垂直成分の値と前記垂直融像よせの感覚性融像閾値との大小を垂直融像よせの感覚性融像の判定条件として、
前記相対輻輳、前記相対調節、前記垂直融像よせにおける全ての感覚性融像の判定条件を同時に満たしたとき感覚性融像の条件を満たす感覚性融像域以内と分類し、一つでも前記感覚性融像の判定条件を満たさない場合は感覚性融像不可域と分類する請求項5又は請求項6に記載の眼鏡レンズの設計方法。 - 前記評価関数、前記両眼視力関数がそれぞれ下記の数1、数2に示す(1)、(2)式の関係を持つ請求項1から請求項7のいずれか1項に記載の眼鏡レンズの設計方法。
- 眼鏡装用者の両眼視に係る個別の測定値である実性相対輻輳、虚性相対輻輳、実性相対調節、虚性相対調節、垂直融像よせを相対測定値とするとき、前記相対測定値として少なくとも前記実性相対輻輳か前記虚性相対輻輳のいずれかまたは両方を測定するステップと、
前記相対測定値を因子として含む両眼視力関数を対象の各評価点で加算した関数を最適化計算時の評価関数とすることにより両眼視機能を最適化するステップと、を有する
眼鏡レンズの評価方法。 - 眼鏡装用者の両眼視に係る個別の測定値である実性相対輻輳、虚性相対輻輳、実性相対調節、虚性相対調節、垂直融像よせを相対測定値とするとき、前記相対測定値として少なくとも前記実性相対輻輳か前記虚性相対輻輳のいずれかまたは両方を用い、前記相対測定値を因子として含む両眼視力関数を対象の各評価点で加算した評価関数を用いて最適化計算を行い、前記最適化計算により求めた光学設計値に基づいて眼鏡レンズを製造する工程を含む
眼鏡レンズの製造方法。 - 眼鏡レンズの発注側に設置されて前記眼鏡レンズの発注に必要な処理を行う機能を有する発注側コンピュータと、前記発注側コンピュータからの情報を受け取って、前記眼鏡レンズの受注に必要な処理を行う機能を有する製造側コンピュータと、が通信回線で接続された眼鏡レンズ製造システムであって、
前記発注側コンピュータは、少なくとも実性相対輻輳か虚性相対輻輳のいずれか又は両方を含む前記眼鏡レンズの設計に必要な情報を前記製造側コンピュータに送信し、
前記製造側コンピュータは、
前記発注側コンピュータから送信された前記相対測定値を含むデータを入力するデータ入力部と、
前記入力されたデータに基づいて、眼鏡レンズの複数の評価点についての光学性能値を計算する両眼視力関数計算部と、
前記少なくとも実性相対輻輳か虚性相対輻輳のいずれか又は両方を含む相対測定値を因子として有する両眼視力関数を対象の各評価点で加算した関数を評価関数として、前記光学性能値の最適化を図る評価関数最適化部と、
前記評価関数を所定の閾値と比較して、前記光学性能値を評価する評価関数評価部と、
前記評価関数評価部において評価した結果、前記両眼視力関数の値が所定の収束条件に達しない場合に、眼鏡レンズの設計データを修正する設計データ修正部と、
前記本発明の評価関数評価部の評価を前記対象の各評価点について終了した結果から、設計データを決定する光学設計値決定部と、
前記光学設計値決定部における最終的な設計データをレンズ加工するための装置へ供給する設計データ出力部と、を有する
眼鏡レンズの製造システム。 - 眼鏡装用者の両眼視に係る個別の測定値である実性相対輻輳、虚性相対輻輳、実性相対調節、虚性相対調節、垂直融像よせを相対測定値とするとき、前記相対測定値として少なくとも前記実性相対輻輳か前記虚性相対輻輳のいずれか又は両方を含む相対測定値を因子として含む両眼視力関数を対象の各評価点で加算した評価関数を用いて最適化計算を行い、前記最適化計算により求めた光学設計値に基づいて製造された
眼鏡レンズ。
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JP2014103585A (ja) | 2012-11-21 | 2014-06-05 | Toshiba Corp | 立体画像表示装置 |
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- 2010-01-29 JP JP2010549452A patent/JP5369121B2/ja active Active
- 2010-01-29 CN CN201080015505.5A patent/CN102369476B/zh active Active
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JP2012095694A (ja) * | 2010-10-29 | 2012-05-24 | Hoya Corp | 両眼視機能測定方法、両眼視機能測定プログラム、眼鏡レンズの設計方法、及び眼鏡レンズの製造方法 |
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Also Published As
Publication number | Publication date |
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US20120081661A1 (en) | 2012-04-05 |
EP2395386A1 (en) | 2011-12-14 |
US9664591B2 (en) | 2017-05-30 |
RU2011136700A (ru) | 2013-03-10 |
RU2511706C2 (ru) | 2014-04-10 |
CN102369476B (zh) | 2014-04-30 |
EP2395386A4 (en) | 2015-09-02 |
CN102369476A (zh) | 2012-03-07 |
BRPI1007918A2 (pt) | 2016-02-23 |
JPWO2010090144A1 (ja) | 2012-08-09 |
JP5369121B2 (ja) | 2013-12-18 |
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