WO2015099135A1 - 累進屈折力レンズを製造するための方法、プログラム及び装置並びに累進屈折力レンズの製造方法及びレンズ供給システム - Google Patents
累進屈折力レンズを製造するための方法、プログラム及び装置並びに累進屈折力レンズの製造方法及びレンズ供給システム Download PDFInfo
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- WO2015099135A1 WO2015099135A1 PCT/JP2014/084550 JP2014084550W WO2015099135A1 WO 2015099135 A1 WO2015099135 A1 WO 2015099135A1 JP 2014084550 W JP2014084550 W JP 2014084550W WO 2015099135 A1 WO2015099135 A1 WO 2015099135A1
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- lens
- progressive
- width
- refracting
- 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
- 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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0016—Operational features thereof
- A61B3/0025—Operational features thereof characterised by electronic signal processing, e.g. eye models
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C13/00—Assembling; Repairing; Cleaning
- G02C13/003—Measuring during assembly or fitting of spectacles
- G02C13/005—Measuring geometric parameters required to locate ophtalmic lenses in spectacles frames
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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
- G02C7/063—Shape of the progressive surface
- G02C7/066—Shape, location or size of the viewing zones
Definitions
- the present invention relates to a method, a program and an apparatus for manufacturing a progressive power lens (hereinafter referred to as “progressive lens”), a method for manufacturing a progressive lens, and a lens supply system.
- progressive lens a progressive power lens
- the prescription power of the spectacle lens is measured in order to improve the appearance of the spectacle lens when the wearer wears the spectacle (for example, JP-A-2002-200041).
- an inspector who performs prescription measurement measures provisional prescription power using an apparatus that objectively measures the refractive power of the eye such as an autorefractometer.
- the inspector selects and arranges the optometry lens with reference to the measurement result (provisional prescription frequency) in front of the intended wearer using a phoropter or a test frame, and through the placed optometry lens. Make the test indicator visible to the intended wearer.
- the inspector asks the person who is scheduled to wear how the visually observed test index looks, and repeats the work of replacing the optometry lens according to the result. This optometry operation is continued until the power value (complete correction value) that provides the highest visual acuity is known.
- the most positive frequency out of the frequencies at which the highest visual acuity is obtained is regarded as the complete correction value.
- the inspector When the inspector knows the complete correction value of the person scheduled to wear, the inspector will have a fixed test frame fitted with an optometry lens with a provisional prescription power that is a value obtained by adjusting the complete correction value or the complete correction value. Take time. This allows the scheduled wearer to determine whether the provisional prescription power glasses can be comfortably worn. As a result of wearing glasses with a provisional prescription power over a certain period of time, for example, the wearer may order the wearer to slightly reduce the frequency because the wearer will be burdened with the eyes because it looks too clear, There are times when I want to make the frequency a little stronger because I want it to look more beautiful. The inspector continues the optometry work in consideration of the order of the intended wearer and his own empirical judgment. The optometry work is continued until there is no order from the intended wearer and the final prescription frequency is determined.
- the prescription frequency since the prescription frequency is determined in consideration of the subjectivity of the intended wearer and the like, it does not necessarily match the complete correction value.
- the fact that the prescription power and the complete correction value do not match may cause a problem in the appearance of the eyeglass lens.
- the progressive lens Aberrations are distributed throughout the lens. Therefore, unintentional aberrations occur as the prescription power becomes far from the complete correction value, and when the person wearing the eyeglasses wears spectacles, the appearance of the prescription is close to the complete correction value. Come different. Therefore, for example, when wearing a spectacle lens created with a prescription power far from the complete correction value, some people may be dissatisfied with the appearance.
- bokeh sensitivity indicating the ease of feeling for the blur
- the blur sensitivity varies depending on the size of the pupil diameter, the transparency of the translucent body in the eyeball, the ability to form a perceptual image in the brain, and the like.
- the inventor obtained the blur sensitivity due to the prescription frequency determined in the optometry work, and selected or designed a spectacle lens that can alleviate the above dissatisfaction based on the determined blur sensitivity. I got the knowledge that it is possible.
- An apparatus for manufacturing a progressive lens according to this embodiment invented in view of the above matters is a first refractive part having a first refractive power, for near vision with respect to the first refractive power.
- This is a device for manufacturing a progressive lens with a blur sensitivity estimation that estimates the blur sensitivity that indicates how easily a spectacle wearer feels when looking through a lens having a prescription power of the first refractive part.
- a design reference lens selection means for selecting at least one basic design lens that matches or approximates a lens having an adjustable range as a design reference lens for a progressive lens worn by a spectacle wearer; and a design reference lens selection means
- Data creating means for creating data for manufacturing a progressive lens based on the lens design of the design reference lens selected by
- the basic design lens in which the width of the clear visible range of the first refracting part is appropriately adjusted according to the blur sensitivity different depending on the person is used as the design reference lens of the progressive lens worn by the spectacle wearer. Therefore, it is possible to design a progressive lens that can alleviate the above dissatisfaction.
- the blur sensitivity is estimated based on, for example, the relationship between the complete correction value of the spectacle wearer and the prescription power value of the first refractive part.
- the first width adjustment step adjusts the width of the clear range of the first refracting portion based on the blur sensitivity estimated by the blur sensitivity estimating means and the visual acuity at the prescription power of the first refracting portion. May be.
- the apparatus for manufacturing the progressive lens according to the present embodiment is a second width adjusting unit that adjusts the width of the clear range of the second refracting portion based on the visual acuity at the prescription power of the second refracting portion.
- the design reference lens selecting unit matches or approximates a lens in which the width of the range where the first refracting portion is clearly visible is adjusted by the first width adjusting unit from the predetermined basic design lens group.
- the design criteria for the progressive lens in which the spectacle wearer wears at least one basic design lens that matches or approximates the lens whose width of the second refracting portion that is clearly visible by the second width adjusting means is adjusted. Select as a lens.
- the apparatus for manufacturing the progressive lens according to the present embodiment may include an input unit that requests input of a complete correction value and a prescription power value of the first refractive part.
- the blur sensitivity estimation means estimates the blur sensitivity based on the relationship between the complete correction value input via the input unit and the prescription power value of the first refractive unit input via the input unit. .
- the input unit may be configured to require input of visual acuity at the prescription power of the first refractive unit.
- the first width adjusting unit is configured to determine the range of the first refracting unit that is clearly visible, the blur sensitivity estimated by the blur sensitivity estimating unit, and the first refracting unit input via the input unit. Adjust based on visual acuity at prescription power.
- a lens supply system for supplying a progressive lens according to the present embodiment includes an apparatus for manufacturing the above-described progressive lens and a biological signal measurement apparatus that measures a biological signal of a spectacle wearer according to the sharpness of a presented image. With. In the system, the blur sensitivity is estimated based on a biological signal measured by the biological signal measuring device.
- a lens supply system for supplying a progressive lens includes the above-mentioned device for manufacturing a progressive lens, and an input device connected to the device via a predetermined network.
- the input device includes an input unit that requests input of information for designing a progressive lens, and a transmission unit that transmits information input via the input unit to the device.
- the blur sensitivity estimation means estimates the blur sensitivity based on the information transmitted by the transmission means, and the first area adjustment means determines the widening of the first refraction part based on the blur sensitivity estimated by the blur sensitivity estimation means.
- the design reference lens selection means adjusts the height of the first refracting part by the first width adjustment means from the predetermined basic design lens group.
- One basic design lens is selected as the design reference lens for the progressive lens worn by the spectacle wearer.
- the input unit may be configured to request input of a complete correction value and a prescription power value of the first refractive part.
- the blur sensitivity estimation means estimates the blur sensitivity based on the relationship between the complete correction value transmitted by the transmission means and the prescription power value of the first refraction part transmitted by the transmission means.
- the input unit may be configured to require input of visual acuity at the prescription power of the first refractive unit.
- the first width adjusting means determines the clear range of the first refracting part at the blur sensitivity estimated by the blur sensitivity estimating means and the prescription frequency of the first refracting part transmitted by the transmitting means. Adjust based on visual acuity.
- the method for manufacturing the progressive lens according to the present embodiment includes a first refractive part having a first refractive power, and a refractive power (additional refractive power) added to the first refractive power for near vision.
- a progressive lens having a second refractive part having a second refractive power and a progressive zone part in which the refractive power gradually changes along the meridian from the first refractive part to the second refractive part In the blur sensitivity estimation step for estimating the blur sensitivity indicating the ease of feeling for the spectacle wearer when looking through the lens having the prescription power of the first refractive part, and the blur sensitivity estimation step Based on the estimated blur sensitivity, a first width adjustment step for adjusting a clear visible range of the first refracting portion and a first basic adjustment lens group, a first basic adjustment lens group, In the width adjustment step, the first refraction part is cleared.
- the method of manufacturing a progressive lens according to this embodiment includes a step of manufacturing a progressive lens using data created by performing the method for manufacturing the progressive lens.
- the program according to the present embodiment is for causing a computer to execute the method for manufacturing the progressive lens described above.
- a method, a program and an apparatus for manufacturing a progressive lens, and a method and a lens for manufacturing a progressive lens which are suitable for making it difficult for a person who intends to wear to feel dissatisfaction with how the object is viewed through the progressive lens.
- a supply system is provided.
- FIG. 1 It is a block diagram which shows the structure of the spectacle lens manufacturing system of embodiment of this invention. It is a figure which shows the example of a screen of the spectacles selector application displayed on the storefront computer with which the spectacles store of embodiment of this invention was equipped. It is a figure which shows the flowchart of the manufacturing process of the spectacle lens in the spectacle lens manufacturing factory of embodiment of this invention. It is a figure which shows the selection flow of the progressive lens for both distances by the spectacles selector application of embodiment of this invention. It is a figure which shows the basic design lens group (frequency distribution (average power error / astigmatism)) which arranged the balance of a distance part and a near part according to type.
- the basic design lens group frequency distribution (average power error / astigmatism)
- FIG. 1 is a block diagram illustrating a configuration of a spectacle lens manufacturing system 1 according to the present embodiment.
- a spectacle lens manufacturing system 1 manufactures spectacle lenses in response to an order from a spectacle store 10 that orders spectacle lenses according to prescriptions to customers (planned wearers). It has an eyeglass lens manufacturing factory 20.
- the order to the spectacle lens manufacturing factory 20 is made through a predetermined network such as the Internet or data transmission by FAX.
- the orderer may include ophthalmologists and general consumers.
- the spectacle store 10 is provided with a store computer 100.
- the store computer 100 is, for example, a tablet terminal, a smart phone, a desktop PC (Personal Computer), a notebook PC, or the like, and an application (hereinafter referred to as “glasses selector application”) 102 for selecting glasses suitable for the intended wearer is installed.
- glasses selector application an application for selecting glasses suitable for the intended wearer is installed.
- FIG. 2 (a) to 2 (d) show examples of screens of the eyeglass selector application 102 displayed on the store computer 100.
- FIG. 2A and 2B show examples of input screens for lens data and frame data.
- the lens data includes, for example, prescription values (spherical refractive power, astigmatic refractive power, astigmatic axis direction, prism refractive power, prism base direction, addition power, interpupillary distance (PD), lens material, refractive index).
- the frame data includes the shape data of the frame selected by the intended wearer. Further, as shown in FIG.
- FIG. 2 (c) shows an example of a screen for acquiring information on the lifestyle of the planned wearer.
- This information acquisition item includes, for example, a question about the basic lifestyle of the intended wearer (work is desk work, driving a car for a long time, etc.) or a life scene (doing indoors, doing outdoors, etc.) ).
- Optometry work using an optometry lens or the like is performed by an inspector.
- an input by an inspector or planned wearer is performed on each screen such as an input screen for various data displayed on the store computer 100 of the spectacle store 10 and a screen for asking a lifestyle.
- the store computer 100 receives all the inputs for all the screens necessary for the design of the spectacle lens, it selects at least one basic design lens from a predetermined basic design lens group (see FIG. 5 and will be described in detail later). Then, the selected basic design lens is displayed on the screen (see FIG. 2D).
- the store computer 100 transmits order data (lens data and frame data) to the spectacle lens manufacturing factory 20 via the Internet, for example. To do.
- the glasses selector application 102 may be installed in a server (not shown) arranged on the network.
- the eyeglass selector application 102 is executed on the server, for example, using a general-purpose browser of the storefront computer 100 as a GUI (Graphical User Interface) or via a dedicated GUI application installed in the storefront computer 100.
- the communication between the store computer 100 and the server is, for example, each screen such as an input screen for various data displayed on the browser and a screen for asking a lifestyle (downloaded from the server (glasses selector application 102) via the network).
- the order data is transmitted from the server to the eyeglass lens manufacturing factory 20 when the basic design lens displayed on the browser or the like is selected as the eyeglass lens to be worn by the intended wearer.
- FIG. 20 Glasses lens manufacturing factory 20
- a LAN Local Area Network
- the spectacle lens design computer 202 and the spectacle lens processing computer 204 are general PCs, and a spectacle lens design program and a spectacle lens processing program are installed, respectively.
- Order data transmitted from the store computer 100 via the Internet is input to the host computer 200.
- the host computer 200 transmits the input order data to the spectacle lens design computer 202.
- FIG. 3 is a flowchart showing the manufacturing process of the spectacle lens in the spectacle lens manufacturing factory 20.
- the eyeglass lens design computer 202 is installed with a program for designing eyeglass lenses according to orders, creates lens design data based on order data (lens data), and based on order data (frame data). Create the target lens processing data.
- the spectacle lens design computer 202 transfers the created lens design data and target lens processing data to the spectacle lens processing computer 204.
- the eyeglass lens processing computer 204 reads the lens design data and the target lens shape processing data transferred from the eyeglass lens design computer 202 and drives and controls the processing machine 206.
- the processing machine 206 produces molds corresponding to the outer surface (convex surface) and inner surface (concave surface) of the lens by grinding and polishing materials such as metal, glass, and ceramics according to the lens design data. To do.
- the produced pair of molds are arranged to face each other with an interval corresponding to the thickness of the spectacle lens, and the outer peripheral surfaces of both molds are wound with an adhesive tape to seal between the molds.
- a hole is made in a part of the adhesive tape, and the lens raw material liquid is injected into the cavity (sealing space between the molds) through the hole.
- the lens raw material liquid injected and filled in the cavity is cured by heat, ultraviolet irradiation, or the like.
- the spectacle lens base material by which each transfer surface shape of a pair of shaping
- the spectacle lens substrate obtained by curing is removed from the mold. Residual stress is removed by annealing treatment on the released spectacle lens substrate. Thereafter, various coatings such as dyeing, hard coating, antireflection film, and UV protection are applied. Thereby, the spectacle lens is completed and delivered to the spectacle store 10.
- the spectacle lens manufacturing factory 20 divides the frequency of the entire production range into a plurality of groups, and has a convex curve shape (for example, spherical shape, aspherical shape, etc.) suitable for the frequency range of each group.
- a semi-finished lens blank group having a lens diameter may be prepared in advance for ordering spectacle lenses.
- the semi-finished lens blank is, for example, a resin blank or a glass blank, and a convex surface and a concave surface are an optical surface (completed surface) and a non-optical surface (unfinished surface), respectively.
- an optimal semi-finished lens blank is selected based on the lens data, and the selected semi-finished lens blank is set in the processing machine 206.
- the processing machine 206 manufactures an uncut lens by grinding and polishing the concave surface of the set semi-finished lens blank according to the lens design data.
- the uncut lens after the concave surface is manufactured is subjected to various coatings such as dyeing, hard coating, antireflection film, and UV protection.
- the peripheral surface of the uncut lens after various coatings is processed based on the lens shape processing data created by the eyeglass lens design computer 202.
- the spectacle lens processed into the target lens shape is delivered to the spectacle store 10.
- the eyeglass lens may be manufactured and processed using lens blanks having both convex and concave surfaces formed into spherical surfaces.
- a spectacle lens having a region in which refractive power changes progressively between two reference points and a spectacle lens having a region similar thereto (hereinafter referred to as “progressive lens” as a term encompassing these spectacle lenses). Used) is designed and manufactured.
- the progressive lens designed and manufactured in the present embodiment there are a plurality of types according to applications such as a progressive lens for both near and near, a lens for both near and near, and a near lens. There are also multiple design types of progressive refractive elements.
- Design types of progressive refractive elements include, for example, a single-sided progressive type that gives progressive refractive elements to convex surfaces (object side surfaces) or concave surfaces (side surfaces of eyes), double-sided progressive types that distribute progressive refractive elements to convex surfaces and concave surfaces, and longitudinal direction
- a double-sided composite type in which progressive refractive elements are distributed on a convex surface and lateral progressive refractive elements are distributed on a concave surface.
- the progressive lens for both near and far covers a wide distance range from a long distance to a short distance, and is basically designed with a focus on far vision.
- the far-distance progressive lens has a far vision area (distance part) widely laid out in an area above the center of the lens, and the near vision area (near part) is located at the lower part of the lens. It is laid out in a limited area.
- the intermediate vision region (progressive zone) that connects the reference point on the distance portion side and the reference point on the near portion side is a region where the refractive power changes progressively between the two reference points, and is bright along the meridian.
- the width of the viewing area (the area that appears clear) is narrower than the distance portion and the near portion.
- the middle / near bifocal lens is designed with more emphasis on intermediate vision than the perspective bifocal progressive lens, and covers the distance of the whole room, such as personal computer work, other desk work, and housework. Soon the lens is designed for near vision and covers the distance from the hand to the depth in the desk, such as personal computer work and other desk work.
- the near and near lenses and the near lenses have the same characteristics as the progressive lenses, and many variations are prepared according to the usage and the lifestyle of the intended wearer.
- the progressive lens for both perspectives is assumed, but the content in which the progressive lens for both perspectives is replaced with other progressive lenses such as a medium and near lenses and a near lens is also included in the present invention. This is a category of the embodiment.
- the ability to form perceptual images in the brain varies from individual to individual. For example, consider a case where a slightly blurred image is shown to a person. In this case, the shown image is improved by a process in the brain and perceived as a blur-free image by a person, or is perceived as an image with a blur without being improved by the process in the brain.
- the distance vision is good with the determined prescription power
- the person wearing the wearer is wearing a bifocal progressive lens that has some aberration around the distance portion. But I feel almost no inconvenience.
- the intended wearer should use the same progressive lens for the near and near as above (a type in which a certain amount of aberration occurs around the distance portion). When worn, it becomes easy to perceive blur due to the aberration, and it makes me feel dissatisfied.
- the prescription frequency determined in the optometry work may be adjusted according to the request of the intended wearer or the empirical judgment of the inspector.
- the spectacle lens manufacturer is only informed of the prescription power value finally determined at the spectacle store etc. for the power, and what is the prescription power value ( For example, it is not notified of information such as whether the value is a complete correction value or how many values are adjusted from the complete correction value. In this way, the spectacle lens manufacturer does not have information on how the prescription power is adjusted from the complete correction value, so that the person who intends to wear it has a refractive power on the entire lens like an aspherical lens or a progressive lens. I can't figure out what it looks like when I put on a lens of a type that changes.
- the present inventor recalled the idea that a spectacle wearer may feel dissatisfied with the spectacle lens manufactured in a state where the above information cannot be obtained.
- a single-focus aspheric design lens is ordered as a minus power spectacle lens for correcting myopia.
- the ordered prescription power is a perfect correction value and the vision level of the intended wearer is improved to a good level, the aberration is improved by the aspherical design. The blur is reduced.
- the ordered prescription power is adjusted to the positive power side from the complete correction value (adjusted to weaken the negative power)
- the spherical design lens whose average refractive power around the lens is stronger on the negative side without aberration correction is clearer when viewed far away through the lens periphery. May be visible.
- the above idea can also be applied to a bifocal progressive lens.
- a bifocal progressive lens it is less necessary to secure a wide distance portion for a person who is expected to wear distant vision (a person who does not need to drive a car or a person who has a lifestyle that mainly acts indoors).
- the progressive zone appears to be clear instead of narrowing the distance zone.
- a design in which the width is widened or the peripheral astigmatism or power error is suppressed is suitable.
- the refractive power close to the prescription power is distributed in the upper central region of the lens (the central region of the distance portion). Therefore, the object looks clear when viewed from a distance through the central region of the distance portion.
- aberration astigmatism and power error near plus power
- the refractive power is calculated from the prescription power by the amount of aberration occurring with respect to the prescription power. Things are blurred because they are out of place.
- a lifestyle person who mainly acts indoors has a viewing distance basically limited to the indoor range. Therefore, even when looking far away in the room through the peripheral area of the distance portion, the thing looks clear and does not substantially cause a problem.
- the ordered prescription power is adjusted closer to the plus correction value than the complete correction value, it will appear blurred by the adjustment power when viewed from a distance through the central area of the distance portion.
- the aberration distributed in the peripheral area particularly, the power error near the positive power
- the aberration corresponding to the adjustment power are superimposed, so that the image is further blurred.
- the image may be blurred even when viewed far away in the room.
- the relationship between the complete correction value determined in the optometry work and the prescription power value determined by adjustment etc. in the optometry work is as follows. This is thought to be closely related to the degree of blur perceived when viewed (blur sensitivity). Therefore, as a result of extensive studies, the present inventor plans to wear from the relationship (difference) between the complete correction value determined in the optometry work and the value of the prescription frequency determined in the optometry work. It has been found that the blur sensitivity of a person can be estimated, that is, the level of the blur sensitivity can be estimated, and the design tendency of an appropriate bifocal progressive lens can be determined based on the estimated blur sensitivity. Moreover, the knowledge that the design tendency of a more suitable perspective lens can be judged by taking into consideration the eyesight level of the person who intends to wear it was also obtained.
- FIG. 4 shows a flow of selecting a bifocal progressive lens having a reference design suitable for the intended wearer from basic design lens groups prepared in advance as design variations for the bifocal progressive lens by the spectacle selector application 102.
- the eyeglass selector application 102 calculates the left and right average values MPW based on the left and right far spherical refractive power SPH, the cylindrical refractive power CYL, and the axial direction AX of astigmatism input through the input screen of various data displayed on the store computer 100.
- the first basic design point DES1 is calculated based on the calculated average value MPW.
- the spectacle selector application 102 calculates the second basic design point DES2 based on the left and right addition powers ADD input through various data input screens displayed on the store computer 100.
- the spectacle selector application 102 calculates the third basic design selection point DES3 based on the frame information (lens forward tilt angle PA) input through various data input screens displayed on the store computer 100.
- the eyeglass selector application 102 calculates the average apex distance MVD based on the frame information (distances VDL and VDR between the left and right lens back surfaces and the left and right eyeball cornea vertices) input through various data input screens displayed on the store computer 100. And a fourth basic design selection point DES4 is calculated based on the calculated average apex distance MVD.
- the glasses selector application 102 has importance A1 to A6 for each life scene (watching TV, PC, musical instrument performance, cooking, gardening, dance / fitness) input through a screen asking about a lifestyle displayed on the store computer 100.
- Importance B1 to B6 for life scenes for life scenes (shopping, dinner / party, travel / resort, landscape photography, running, walking) and life scenes (drive, watching bikes, touring, stadium, golf, climbing / hiking, theater / movies)
- a fifth basic design selection point DES5 is calculated based on the importance C1 to C6 for (appreciating).
- the spectacles selector application 102 calculates the sixth basic design selection point DES6 based on the importance FWT (importance with respect to far vision of the intended wearer) inputted through the input screen of various data displayed on the store computer 100. .
- the spectacle selector application 102 is a type information KBtp (progressive lens, multifocal lens, other short focus lens, etc. used by the planned wearer last time, which is input through an input screen for various data displayed on the store computer 100.
- the seventh basic design selection point DES7 is calculated based on the lens type information), the satisfaction degree SAT of the glasses used last time, the average value MPWp, and MPW.
- FIGS. 5 and 6 are diagrams for explaining the effect of introducing the eighth basic design point DES8 as a design point of the bifocal progressive lens.
- FIG. 5 shows a basic design lens group (frequency distribution (average power error / astigmatism)) in which the balance between the distance portion and the near portion is arranged according to type.
- the right basic design lens (frequency distribution) is a far-distance clear type lens with a wider distance portion (smaller aberration in the peripheral portion of the far vision region), and the left basic design lens (frequency distribution) is farther away. This is a soft lens for far use with a narrow use part (a lot of aberrations in the peripheral part of the far vision region).
- the lower basic design lens (frequency distribution) is a near-use clear type lens (having a wide distribution of refractive power for near vision), and the upper basic design lens.
- the distribution of the basic design lenses arranged in FIG. 5 (and FIG. 6 described later) is a basic distribution before performing the inset approaching the nose side of the near portion. When it is determined whether each basic design distribution is used for the right lens or the left lens, inset of the near portion is performed to bring the near portion closer to the nose.
- the distance clear type design is suitable mainly for those who plan to wear under conditions where the slight blurring of the distance portion (or near portion) is likely to be a concern (such as the frequency of driving a car is high).
- the clear area in the progressive zone is narrowed, but the distance (or near) is clear. Wide viewing area is secured.
- the distance clear type design increases unnecessary astigmatism, distortion, and shaking that occur in the areas on both sides of the progressive zone, but the area that appears clear in the distance (or near) area becomes wider It is suitable for a planned wearer who places importance on far vision (or near vision).
- the long-distance soft type design is suitable mainly for those who plan to wear under conditions (such as not driving a car) where it is difficult to notice the slight blurring of the distance portion (or near portion). Instead of narrowing the region that appears clear at the part (or near part), a progressive zone is secured widely. According to the design of the distance-use soft type, the area that is clearly visible in the distance-use part (or near-use part) is narrowed, but unnecessary astigmatism, distortion, and shaking that occur in the areas on both sides of the progressive zone part are suppressed. Therefore, it is suitable for a planned wearer who places importance on intermediate vision.
- FIGS. 6A to 6D there is a case where the design tendency of the distance portion (clear distance type, distance software type, etc.) is changed based on the eighth basic design point DES8.
- the basic design when DESTT is the added value of the basic design points DES1 to DES7 (the value not adding the eighth basic design point DES8).
- a reference SDL is attached to the range of the basic design lens selected based on the point DES.
- the reference SDL ' is added to the range of the basic design lens selected based on the basic design point DES when DESTT is the added value of the basic design points DES1 to DES8.
- a basic design lens (frequency distribution (average power error / astigmatism)) partially included in the range SDL ′ is used by a person who intends to wear it. It is selected as a design reference lens for a progressive lens for both perspective.
- DES8 ( ⁇ PW ⁇ 0.25) ⁇ (VAb ⁇ 0.6) ⁇ 30 ⁇ PW is an average value of the difference in average power between the distance prescription power (right) and the complete correction value (right) and the difference in average power between the distance prescription power (left) and the complete correction value (left).
- ⁇ PW ((SPH R + CYL R / 2) - (SPH R0 + CYL R0 / 2) + (SPH L + CYL L / 2) - (SPH L0 + CYL L0 / 2)) / 2 It becomes.
- the distance portion acts to select a soft design
- the eighth basic design point DES8 is a positive value
- the distance portion selects a clear design. Acts like In Case 1, the eighth basic design point DES8 is a negative value. Therefore, as shown in FIG. 6A, the range of the selected basic design lens is shifted from the range SDL to the range SDL 'on the far side software side. The amount of shift increases as the absolute value of the eighth basic design point DES8 increases, and decreases as it decreases.
- the eighth basic design point DES8 is calculated using the same formula as in case 1.
- the eighth basic design point DES8 is a positive value. Therefore, as shown in FIG. 6B, the range of the selected basic design lens is shifted from the range SDL to the range SDL ′ on the clear distance side (the side close to the complete correction value). The amount of shift increases as the absolute value of the eighth basic design point DES8 increases, and decreases as it decreases.
- the range of the selected basic design lens is shifted from the range SDL to the range SDL ′ on the clear side for clear use (side closer to the complete correction value).
- the amount of shift increases as the absolute value of the eighth basic design point DES8 increases, and decreases as it decreases.
- the spectacle selector application 102 selects the selected basic lens. Based on the design lens, ordering data (lens data and frame data) for a progressive lens for both near and near that is suitable for the physical characteristics, usage status, and prescription power of the intended wearer is created and transmitted to the eyeglass lens manufacturing factory 20.
- the design tendency of the distance portion is changed, but the design tendency of the near portion may be changed together.
- the design tendency of the near portion may be changed based on the near vision value with both eyes measured using the near vision table, as will be described below, for example.
- Examples of the near vision table used for the near vision measurement include a vision table for measuring near vision by a printed matter, and a vision table displayed on a small display device installed at a near distance. Near vision is usually measured at a distance of 40 cm. However, when the distance for near vision of the intended wearer is clear, the near vision measurement may be performed at that distance.
- the near vision near binocular vision value VAbn
- the design tendency of the near portion is mainly determined by information other than the near vision such as the life scene of the planned wearer (for example, whether to read a book or read a newspaper).
- the near vision part is slightly narrow according to the value of the near vision vision against the design tendency of the near vision part based on information other than the near vision.
- the near-field software type is selected (for example, the range SDL is shifted upward in FIG. 6A).
- the near-use soft type instead of narrowing the near-use portion, the clear region in the progressive zone is widened, and unnecessary astigmatism, distortion, and shaking generated in the regions on both sides of the progressive zone are suppressed.
- the width of the near portion of the progressive lens is 20% of the standard design regardless of the binocular visual acuity value VAbn. It is considered that the limit is to make it narrow.
- the near vision area has a slightly wider near vision area depending on the value of near vision versus the design trend of the near vision area based on information other than near vision.
- the clear type is selected (for example, the range SDL is shifted downward in FIG. 6A).
- the clear region in the progressive zone is narrowed instead of the near portion spreading, and unnecessary astigmatism, distortion, and shaking generated in the regions on both sides of the progressive zone are increased.
- the width of the near portion of the progressive lens is 30% of the standard design regardless of the binocular visual acuity value VAbn. It is considered that the limit is to make it as wide as possible.
- a lens can be provided.
- the blur sensitivity of the intended wearer is estimated from the relationship (difference) between the complete correction value determined in the optometry work and the value of the prescription frequency determined after adjustment in the optometry work.
- the blur sensitivity may be measured using a near-infrared (spectroscopy) brain measurement device.
- International Publication No. 1 Details of the blur sensitivity measurement method using the NIRS brain measurement apparatus are disclosed in, for example, International Publication No. 2014/22926 pamphlet (hereinafter referred to as “International Publication No. 1”).
- a wearer wears an optometric lens having a prescription power (distance power) determined in the optometry work when measuring blur sensitivity using a NIRS brain measurement device.
- the probe of the NIRS brain measurement device is set on the frontal region of the person who is scheduled to wear (see, for example, FIG. 3 of International Publication 1).
- a plurality of images with different sharpness levels are randomly presented to a wearer who has a probe set.
- the power of the optometry lens is appropriately adjusted according to the distance between the planned wearer and the presented image.
- the plurality of presented images include an original image whose sharpness is not adjusted, and a sharpened image and a blurred image with respect to the original image. Specific examples of a plurality of presented images are referred to in FIG.
- FIGS. 7 to 9 are shown by citing FIGS. 23A to 23C of International Publication No. 1.
- 7 to 9 are graphs illustrating the entropy for each subject (planned wearer) according to the definition of the presented image.
- the vertical axis represents relative entropy (Relative Entropy), and the entropy value of the intended wearer when viewing the original image is used as a reference (entropy is zero).
- the horizontal axis indicates the sharpness (Image Clarity Level (slope index)) of the presented image.
- the sharpness of the original image is zero, the sharpness of the image sharpened with respect to the original image is greater than zero (a positive value), and is blurry with respect to the original image.
- the sharpness of the image is less than zero (negative value).
- the relative entropy is determined from a biological signal (blood flow in the brain (amount of oxyhemoglobin)) measured by the NIRS brain measurement apparatus.
- the larger the inclination of the graphs in FIGS. 7 to 9 the image is slightly sharpened or slightly blurred.
- the higher the response of the planned wearer's brain the higher the blur sensitivity. That is, by adopting this measurement method, the blur sensitivity of the intended wearer is objectively evaluated based on the blood flow in the brain.
- an average change degree of relative entropy is referred to as “reference change degree”.
- the relative entropy is measured for the intended wearer and the degree of change is determined, a comparison with the reference change is made. It is judged that the blur sensitivity is high when the change in the relative entropy of the planned wearer is larger than the reference change (for example, the decrease in the relative entropy of the planned wearer is larger than the decrease in the average relative entropy). If it is smaller than the condition (for example, the decrease in relative entropy of the intended wearer is smaller than the decrease in average relative entropy), it is determined that the blur sensitivity is low.
- Measures for obtaining a judgment standard are preferable as the number of subjects increases. However, if about 20 subjects are measured, an appropriate and appropriate standard change condition can be obtained. However, each subject needs to have sufficient visual acuity for the presented image. For this purpose, it is necessary to perform measurement after appropriate visual acuity correction using a spectacle lens or the like. In addition, since the degree and range of change in relative entropy change depending on the size of the image presented to the subject and the presentation image itself when obtaining the reference change degree, the presentation image when the reference change degree is obtained and the planned wearing It is desirable to use the same presentation image when measuring the person.
- the greater the entropy increase for a sharpened image relative to the original image the greater the change in the relative entropy of the intended wearer
- the greater the decrease in entropy for a blurred image relative to the original image the greater the change in the relative entropy of the intended wearer
- the more likely the wearer will wear the prescribed number of lenses It is also considered that a more blurred image is perceived as a largely blurred image. In this case, it is evaluated that the prescription power is adjusted to the plus power side with respect to the complete correction value (above (2)).
- the range of the selected basic design lens is shifted from the range SDL to the range SDL 'on the far side software side, as shown in FIG. 6A, as in the case 1 of the above embodiment.
- Whether or not the eyesight level of the intended wearer is satisfactory in the prescription frequency may be determined based on, for example, IPSD (Integral of the Entropy's Power in Spectrum Density) (see FIGS. 27 to 32 of International Publication No. 1). .
- IPSD Integral of the Entropy's Power in Spectrum Density
- the range of the selected basic design lens is shifted from the range SDL to the clear range SDL ′ as shown in FIG. 6B, as in the case 2 of the above embodiment.
- the range of the selected basic design lens is not shifted from the range SDL, as shown in FIG. 6C, as in the case 3 of the above embodiment.
- a case is considered where the vision level of the planned wearer through the distance section is poor and the planned wearer's blur sensitivity with respect to the distant display image is evaluated to be high.
- the range of the selected basic design lens is shifted from the range SDL to the clear range SDL ′ as shown in FIG. 6D, as in the case 4 of the above embodiment.
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Abstract
Description
図1は、本実施形態の眼鏡レンズ製造システム1の構成を示すブロック図である。図1に示されるように、眼鏡レンズ製造システム1は、顧客(装用予定者)に対する処方に応じた眼鏡レンズを発注する眼鏡店10と、眼鏡店10からの発注を受けて眼鏡レンズを製造する眼鏡レンズ製造工場20を有している。眼鏡レンズ製造工場20への発注は、インターネット等の所定のネットワークやFAX等によるデータ送信を通じて行われる。発注者には眼科医や一般消費者を含めてもよい。
眼鏡店10には、店頭コンピュータ100が備えられている。店頭コンピュータ100は、例えばタブレット端末やスマートフォン、デスクトップPC(Personal Computer)、ノートPC等であり、装用予定者に適した眼鏡を選択するアプリケーション(以下、「眼鏡セレクタアプリ」と記す。)102がインストールされている。
眼鏡レンズ製造工場20には、ホストコンピュータ200を中心としたLAN(Local Area Network)が構築されており、眼鏡レンズ設計用コンピュータ202や眼鏡レンズ加工用コンピュータ204をはじめ多数の端末装置が接続されている。眼鏡レンズ設計用コンピュータ202、眼鏡レンズ加工用コンピュータ204は一般的なPCであり、それぞれ、眼鏡レンズ設計用のプログラム、眼鏡レンズ加工用のプログラムがインストールされている。ホストコンピュータ200には、店頭コンピュータ100からインターネット経由で送信された発注データが入力される。ホストコンピュータ200は、入力された発注データを眼鏡レンズ設計用コンピュータ202に送信する。
[図3のS11(眼鏡レンズの設計)]
図3は、眼鏡レンズ製造工場20内での眼鏡レンズの製造工程を示すフローチャートである。眼鏡レンズ設計用コンピュータ202は、受注に応じた眼鏡レンズを設計するためのプログラムがインストールされており、発注データ(レンズデータ)に基づいてレンズ設計データを作成し、発注データ(フレームデータ)に基づいて玉型加工データを作成する。眼鏡レンズ設計用コンピュータ202は、作成されたレンズ設計データ及び玉型加工データを眼鏡レンズ加工用コンピュータ204に転送する。
眼鏡レンズ加工用コンピュータ204は、眼鏡レンズ設計用コンピュータ202から転送されたレンズ設計データ及び玉型加工データを読み込み、加工機206を駆動制御する。
本実施形態では、2つの基準点間で屈折力が累進的に変化する領域を持つ眼鏡レンズ及びこれに類する領域を持つ眼鏡レンズ(以降、これらの眼鏡レンズを包括する文言として「累進レンズ」を用いる。)が設計・製造される。本実施形態で設計・製造される累進レンズには、例えば、遠近両用累進レンズ、中近両用レンズ、近々レンズなど、用途に応じた複数タイプが存在する。また、累進屈折要素の設計タイプも複数存在する。累進屈折要素の設計タイプには、例えば、累進屈折要素を凸面(物体側面)又は凹面(眼球側面)に与える片面累進タイプ、累進屈折要素を凸面と凹面とに配分する両面累進タイプ、縦方向の累進屈折要素を凸面に配分すると共に横方向の累進屈折要素を凹面に配分する両面複合タイプが挙げられる。
人がボヤケた画像やシャープな画像を見たときにどのように知覚するか(ボヤケ感度)は、個々人で異なっており、知覚される画像の質によって決まる。知覚される画像の質は、眼鏡レンズの処方度数の値、瞳孔径の大きさ、眼球内の透光体の透明度、脳内で処理されて形成される知覚画像等によって決まるものと考えられる。
検眼によって測定され決定された眼鏡レンズの処方度数で装用予定者がどの程度の視力レベルで見えるかの情報については、眼鏡レンズメーカに提供されることはなく、眼科医、検眼士又は眼鏡店内でのみ把握されているだけである。しかし、遠近両用累進レンズは、各領域(遠用部、累進帯部、近用部)の広さに制約があり、各領域の広さの与え方によって周囲に発生する収差量が変化するという特性を持つ。このような遠近両用累進レンズを新しく作成する場合、装用予定者の視力レベルが良好であったか否かによって選択されるべき遠近両用累進レンズの基本的な設計が異なる。例えば、決定された処方度数によって遠方の視力が良好に得られている場合、装用予定者は、遠用部周辺にある程度の収差が発生しているタイプの遠近両用累進レンズを装用する場合であっても不便さを殆ど感じない。一方、決定された処方度数で遠方の視力が充分に得られていない場合、装用予定者は、上記と同じ(遠用部周辺にある程度の収差が発生しているタイプの)遠近両用累進レンズを装用すると、その収差によるボヤケを知覚しやすくなり邪魔に感じて不満を覚える。
上述したように、検査員によって行われる検眼作業(処方度数の測定及び決定)では、検査員が装用予定者に対して検眼レンズを介したものの見え方を訊き、装用予定者がそれに返答するという形式で行われる。しかし、検眼レンズの度数が最適に近い度数になると、装用予定者は、その度数付近において何れの検眼レンズを介したものの見え方が良好であるかを判断することが難しくなり、返答に困ることがある。すなわち、装用予定者の返答には、ある程度の不正確性が残る。
本発明者は、上記の情報を知得することができない状態で製造された眼鏡レンズでは、そのものの見え方について装用予定者が不満を感じることがあるという考えを想起した。
図4は、眼鏡セレクタアプリ102による遠近両用累進レンズについて、あらかじめ設計バリエーションとして用意されている基本設計レンズ群の中から装用予定者に適した基準設計の遠近両用累進レンズを選択するフローを示す。
本処理ステップS21では、基本設計ポイントDES1~DES7が計算される。ここでは、基本設計ポイントDES1~DES7について概説的に説明する。基本設計ポイントDES1~DES7の詳細な説明については、特許第5094968号公報にて参照することができる。
本処理ステップS22では、第8の基本設計ポイントDES8が計算される。
本処理ステップS23では、DESTT(=DES1+DES2+DES3+DES4+DES5+DES6+DES7+DES8)、CURD(前回使用眼鏡のタイプの指標)及び満足度SATに基づいて基本設計ポイントDESが計算される。なお、基本設計ポイントDESの計算の詳細(但し、第8の基本設計ポイントDES8を除く内容)は、特許第5094968号公報にて参照することができる。
本処理ステップS24では、処理ステップS23(基本設計ポイントDESの計算)にて計算された基本設計ポイントDESに基づいて、所定の基本設計レンズ群の中から、少なくとも一つの基本設計レンズが装用予定者に装用される遠近両用累進レンズの設計基準レンズとして選定されて、店頭コンピュータ100の画面に表示される。
両眼視力値VAb=((右眼視力+左目視力))/2)×1.1
遠用処方度数が完全矯正値又はそれに近似する値であるため、遠方視時におけるもののボヤケが少ない。なお、遠用処方度数と完全矯正値との関係(差異)は、図2(a)の画面を介して入力された処方度数と完全矯正値に基づいて把握される。そのため、遠用部の設計傾向を多少変えたとしても、少なくとも遠方視時に限ってはボヤケが知覚されにくい。従って、本ケース1では、装用予定者は、遠用処方度数ではボヤケに対して鈍く、ボヤケ感度が低いものと推定される。附言するに、ボヤケ感度は、遠用処方度数と完全矯正値とが近いほど低いものと推定される。なお、通常は意図して行われることは無いと考えられるが、もし、遠用処方度数が完全矯正よりも僅かにマイナス寄りに処方されただけの場合もボヤケ感度は低いものと推定される。
DES8=(ΔPW-0.25)×(VAb-0.6)×30
ΔPWは、遠用処方度数(右)と完全矯正値(右)との平均度数の差と、遠用処方度数(左)と完全矯正値(左)との平均度数の差の平均値である。数式で表すと、
ΔPW=((SPHR+CYLR/2)-(SPHR0+CYLR0/2)+(SPHL+CYLL/2)-(SPHL0+CYLL0/2))/2
となる。
遠用処方度数が完全矯正値からプラス度数側に離れた値に調整されているため、遠方視時におけるもののボヤケが若干大きい。特に、遠用部の周辺領域を介してものを見たときのボヤケは大きい。そのため、例えば遠用部の設計傾向を更にプラス度数側に変えると、遠方視時のボヤケがかなり大きくなる虞がある。従って、本ケース2では、装用予定者は、遠用処方度数ではボヤケに対して敏感で、ボヤケ感度が高いものと推定される。附言するに、ボヤケ感度は、遠用処方度数と完全矯正値とが離れているほど高いものと推定される。
本ケース3においてもケース1と同じく遠用処方度数が完全矯正値又はそれに近似する値であるため、装用予定者のボヤケ感度が低いものと推定される。本ケース3では、視力レベルが不良と判定された場合を考慮するための次式により、第8の基本設計ポイントDES8が計算される。
DES8=ΔPW×10
本ケース4においてもケース2と同じく遠用処方度数が完全矯正値からプラス度数側に離れた値に調整されているため、装用予定者のボヤケ感度が高いものと推定される。第8の基本設計ポイントDES8の計算式は、視力レベルが不良であることから、ケース3と同じである。
図4の処理ステップS24(装用される遠近両用累進レンズの基本設計レンズの選定)にて選定された基本設計レンズの中から一つが選択操作されると、眼鏡セレクタアプリ102は、選択された基本設計レンズに基づいて、装用予定者の身体的特徴、使用状況及び処方度数に適した遠近両用累進レンズの発注データ(レンズデータ及びフレームデータ)を作成して眼鏡レンズ製造工場20に送信する。
上記においては、遠用部の設計傾向が変更されているが、併せて近用部の設計傾向を変更してもよい。近用部の設計傾向は、例えば、以下に説明されるように、近方視力表を用いて測定された両眼での近方視力値に基づいて変更するとよい。
本ケースでは、普通のレベルの近方視力が得られているため、近方視力を考慮することによる近用部の設計傾向の変更は必要が無い。近用部の設計傾向は、主に、装用予定者の生活シーン(例えば読書や新聞をよく読むかどうか)等の近方視力以外の情報によって決定される。
本ケースでは、特に良好な近方視力が得られている。近用部を介した近方視が快適であると考えられるため、近方視力以外の情報に基づく近用部の設計傾向に対し、近方視力の値に応じてやや狭い近用部を持つ近用ソフトタイプが選定される(例えば図6(a)では範囲SDLが上側にシフト)。近用ソフトタイプでは、近用部が狭められる代わりに累進帯部におけるクリアな領域が広くなり、累進帯部の両側の領域に発生する不要な乱視や歪み、揺れが抑えられる。なお、累進レンズの近用部の広さを狭くすることには限度があり、本ケースでは、近用部の広さは、両眼視力値VAbnに拘わらず、標準的設計に対して20%程度狭くするのが限度であるものと考えられる。
本ケースでは、良好な近方視力が得られていない。近用部を介した近方視を快適にするためには、近方視力以外の情報に基づく近用部の設計傾向に対し、近方視力の値に応じてやや広い近用部を持つ近用クリアタイプが選定される(例えば図6(a)では範囲SDLが下側にシフト)。但し、近用部が広がる代わりに累進帯部におけるクリアな領域が狭くなり、累進帯部の両側の領域に発生する不要な乱視や歪み、揺れが増加する。なお、累進レンズの近用部の広さを広くすることには限度があり、本ケースでは、近用部の広さは、両眼視力値VAbnに拘わらず、標準的設計に対して30%程度広くするのが限度であるものと考えられる。
Claims (23)
- 第一の屈折力を持つ第一屈折部、該第一の屈折力に対して近方視のために屈折力(加入屈折力)が付加された第二の屈折力を持つ第二屈折部、及び該第一屈折部から該第二屈折部に至る子午線沿いに屈折力が累進的に変化する累進帯部を持つ累進レンズを製造するための装置であって、
前記第一屈折部の処方度数を持つレンズを介してものを見たときの眼鏡装用者のボヤケに対する感じやすさを示すボヤケ感度を推定するボヤケ感度推定手段と、
前記ボヤケ感度推定手段により推定されたボヤケ感度に基づいて前記第一屈折部のクリアに見える範囲の広さを調整する第一の広さ調整手段と、
所定の基本設計レンズ群の中から、前記第一の広さ調整手段にて前記第一屈折部のクリアに見える範囲の広さが調整されたレンズと一致又は近似する少なくとも一つの基本設計レンズを、前記眼鏡装用者が装用する累進レンズの設計基準レンズとして選定する設計基準レンズ選定手段と、
前記設計基準レンズ選定手段により選定された設計基準レンズのレンズ設計に基づいて累進レンズを製造するためのデータを作成するデータ作成手段と、
を備える、
累進レンズを製造するための装置。 - 前記第一の広さ調整手段は、
前記第一屈折部のクリアに見える範囲の広さを、前記ボヤケ感度推定手段により推定されたボヤケ感度、及び前記第一屈折部の処方度数での視力に基づいて調整する、
請求項1に記載の累進レンズを製造するための装置。 - 前記第二屈折部の処方度数での視力に基づいて該第二屈折部のクリアに見える範囲の広さを調整する第二の広さ調整手段
を備え、
前記設計基準レンズ選定手段は、
前記基本設計レンズ群の中から、前記第一の広さ調整手段により前記第一屈折部のクリアに見える範囲の広さが調整されたレンズと一致又は近似し且つ前記第二の広さ調整手段により前記第二屈折部のクリアに見える範囲の広さが調整されたレンズと一致又は近似する少なくとも一つの基本設計レンズを、前記眼鏡装用者が装用する累進レンズの設計基準レンズとして選定する、
請求項1又は請求項2に記載の累進レンズを製造するための装置。 - 前記ボヤケ感度は、
前記眼鏡装用者の完全矯正値と前記第一屈折部の処方度数の値との関係に基づいて推定される、
請求項1から請求項3の何れか一項に記載の累進レンズを製造するための装置。 - 前記完全矯正値、及び前記第一屈折部の処方度数の値の入力を要求する入力部
を備え、
前記ボヤケ感度推定手段は、
前記入力部を介して入力された完全矯正値、及び該入力部を介して入力された前記第一屈折部の処方度数の値との関係に基づいて前記ボヤケ感度を推定する、
請求項4に記載の累進レンズを製造するための装置。 - 前記入力部は、
前記第一屈折部の処方度数での視力の入力も要求し、
前記第一の広さ調整手段は、
前記第一屈折部のクリアに見える範囲の広さを、前記ボヤケ感度推定手段により推定されたボヤケ感度、並びに前記入力部を介して入力された前記第一屈折部の処方度数での視力に基づいて調整する、
請求項2を引用する請求項5に記載の累進レンズを製造するための装置。 - 請求項1から請求項4の何れか一項に記載の累進レンズを製造するための装置と、
前記装置と所定のネットワークを介して接続された入力装置と、
を備え、
前記入力装置は、
前記累進レンズを設計するための情報の入力を要求する入力部と、
前記入力部を介して入力された情報を前記装置に送信する送信手段と、
を有し、
前記ボヤケ感度推定手段は、
前記送信手段により送信された情報に基づいて前記ボヤケ感度を推定し、
前記第一の広さ調整手段は、
前記ボヤケ感度推定手段により推定されたボヤケ感度に基づいて前記第一屈折部の広さを調整し、
前記設計基準レンズ選定手段は、
所定の基本設計レンズ群の中から、前記第一の広さ調整手段にて前記第一屈折部の広さが調整されたレンズと一致又は近似する少なくとも一つの基本設計レンズを、前記眼鏡装用者が装用する累進レンズの設計基準レンズとして選定する、
累進レンズを供給するためのレンズ供給システム。 - 前記入力部は、
前記完全矯正値、及び前記第一屈折部の処方度数の値の入力を要求し、
前記ボヤケ感度推定手段は、
前記送信手段により送信された完全矯正値、及び該送信手段により送信された前記第一屈折部の処方度数の値との関係に基づいて前記ボヤケ感度を推定する、
請求項7に記載の累進レンズを供給するためのレンズ供給システム。 - 前記入力部は、
前記第一屈折部の処方度数での視力の入力も要求し、
前記第一の広さ調整手段は、
前記第一屈折部のクリアに見える範囲の広さを、前記ボヤケ感度推定手段により推定されたボヤケ感度、並びに前記送信手段により送信された前記第一屈折部の処方度数での視力に基づいて調整する、
請求項8に記載の累進レンズを供給するためのレンズ供給システム。 - 第一の屈折力を持つ第一屈折部、該第一の屈折力に対して近方視のために屈折力(加入屈折力)が付加された第二の屈折力を持つ第二屈折部、及び該第一屈折部から該第二屈折部に至る子午線沿いに屈折力が累進的に変化する累進帯部を持つ累進レンズを製造するための方法であって、
前記第一屈折部の処方度数を持つレンズを介してものを見たときの眼鏡装用者のボヤケに対する感じやすさを示すボヤケ感度を推定するボヤケ感度推定ステップと、
前記ボヤケ感度推定ステップにて推定されたボヤケ感度に基づいて前記第一屈折部の広さを調整する第一の広さ調整ステップと、
所定の基本設計レンズ群の中から、前記第一の広さ調整ステップにて前記第一屈折部の広さが調整されたレンズと一致又は近似する少なくとも一つの基本設計レンズを、前記眼鏡装用者が装用する累進レンズの設計基準レンズとして選定する設計基準レンズ選定ステップと、
前記設計基準レンズ選定ステップにて選定された設計基準レンズのレンズ設計に基づいて累進レンズを製造するためのデータを作成するデータ作成ステップと、
を含む、
累進レンズを製造するための方法。 - 前記第一の広さ調整ステップにて、
前記第一屈折部のクリアに見える範囲の広さは、
前記ボヤケ感度推定ステップにて推定されたボヤケ感度、及び前記第一屈折部の処方度数での視力に基づいて調整される、
請求項10に記載の累進レンズを製造するための方法。 - 前記第二屈折部の処方度数での視力に基づいて該第二屈折部の広さを調整する第二の広さ調整ステップ
を含み、
前記設計基準レンズ選定ステップにて、
前記基本設計レンズ群の中から、前記第一の広さ調整ステップにて前記第一屈折部の広さが調整されたレンズと一致又は近似し且つ前記第二の広さ調整ステップにて前記第二屈折部の広さが調整されたレンズと一致又は近似する少なくとも一つの基本設計レンズが、前記眼鏡装用者が装用する累進レンズの設計基準レンズとして選定される、
請求項10又は請求項11に記載の累進レンズを製造するための方法。 - 前記ボヤケ感度は、
前記眼鏡装用者の完全矯正値と、前記第一屈折部の処方度数の値との関係に基づいて推定される、
請求項10から請求項12の何れか一項に記載の累進レンズを製造するための方法。 - 請求項10から請求項13の何れか一項に記載の方法を実施することにより作成されたデータを用いて累進レンズを製造するステップ
を含む、
累進レンズの製造方法。 - 請求項10から請求項13の何れか一項に記載の方法をコンピュータに実行させるためのプログラム。
- 第一の屈折力を持つ第一屈折部、該第一の屈折力に対して近方視のために屈折力(加入屈折力)が付加された第二の屈折力を持つ第二屈折部、及び該第一屈折部から該第二屈折部に至る子午線沿いに屈折力が累進的に変化する累進帯部を持つ累進レンズを製造するための装置であって、
前記第一屈折部の処方度数を持つレンズを介してものを見たときの眼鏡装用者のボヤケに対する感じやすさを示すボヤケ感度を推定するボヤケ感度推定手段と、
前記ボヤケ感度推定手段により推定されたボヤケ感度に基づいて前記第一屈折部のクリアに見える範囲の広さを調整する第一の広さ調整手段と、
所定の基本設計レンズ群の中から、前記第一の広さ調整手段にて前記第一屈折部のクリアに見える範囲の広さが調整されたレンズと一致又は近似する少なくとも一つの基本設計レンズを、前記眼鏡装用者が装用する累進レンズの設計基準レンズとして選定する設計基準レンズ選定手段と、
前記設計基準レンズ選定手段により選定された設計基準レンズのレンズ設計に基づいて累進レンズを製造するためのデータを作成するデータ作成手段と、
を有する、前記累進レンズを製造するための装置と、
提示画像の鮮明度に応じた眼鏡装用者の生体信号を計測する生体信号計測装置と、
を備え、
前記ボヤケ感度は、
前記生体信号計測装置にて計測される生体信号に基づいて推定される、
累進レンズを供給するためのレンズ供給システム。 - 前記第一の広さ調整手段は、
前記第一屈折部のクリアに見える範囲の広さを、前記ボヤケ感度推定手段により推定されたボヤケ感度、及び前記第一屈折部の処方度数での視力に基づいて調整する、
請求項16に記載の累進レンズを供給するためのレンズ供給システム。 - 前記第二屈折部の処方度数での視力に基づいて該第二屈折部のクリアに見える範囲の広さを調整する第二の広さ調整手段
を備え、
前記設計基準レンズ選定手段は、
前記基本設計レンズ群の中から、前記第一の広さ調整手段により前記第一屈折部のクリアに見える範囲の広さが調整されたレンズと一致又は近似し且つ前記第二の広さ調整手段により前記第二屈折部のクリアに見える範囲の広さが調整されたレンズと一致又は近似する少なくとも一つの基本設計レンズを、前記眼鏡装用者が装用する累進レンズの設計基準レンズとして選定する、
請求項16又は請求項17の何れか一項に記載の累進レンズを供給するためのレンズ供給システム。 - 第一の屈折力を持つ第一屈折部、該第一の屈折力に対して近方視のために屈折力(加入屈折力)が付加された第二の屈折力を持つ第二屈折部、及び該第一屈折部から該第二屈折部に至る子午線沿いに屈折力が累進的に変化する累進帯部を持つ累進レンズを製造するための方法であって、
提示画像の鮮明度に応じた眼鏡装用者の生体信号を計測する生体信号計測ステップと、
前記生体信号計測ステップにて計測される生体信号に基づいて、前記第一屈折部の処方度数を持つレンズを介してものを見たときの眼鏡装用者のボヤケに対する感じやすさを示すボヤケ感度を推定するボヤケ感度推定ステップと、
前記ボヤケ感度推定ステップにて推定されたボヤケ感度に基づいて前記第一屈折部の広さを調整する第一の広さ調整ステップと、
所定の基本設計レンズ群の中から、前記第一の広さ調整ステップにて前記第一屈折部の広さが調整されたレンズと一致又は近似する少なくとも一つの基本設計レンズを、前記眼鏡装用者が装用する累進レンズの設計基準レンズとして選定する設計基準レンズ選定ステップと、
前記設計基準レンズ選定ステップにて選定された設計基準レンズのレンズ設計に基づいて累進レンズを製造するためのデータを作成するデータ作成ステップと、
を含む、
累進レンズを製造するための方法。 - 前記第一の広さ調整ステップにて、
前記第一屈折部のクリアに見える範囲の広さは、
前記ボヤケ感度推定ステップにて推定されたボヤケ感度、及び前記第一屈折部の処方度数での視力に基づいて調整される、
請求項19に記載の累進レンズを製造するための方法。 - 前記第二屈折部の処方度数での視力に基づいて該第二屈折部の広さを調整する第二の広さ調整ステップ
を含み、
前記設計基準レンズ選定ステップにて、
前記基本設計レンズ群の中から、前記第一の広さ調整ステップにて前記第一屈折部の広さが調整されたレンズと一致又は近似し且つ前記第二の広さ調整ステップにて前記第二屈折部の広さが調整されたレンズと一致又は近似する少なくとも一つの基本設計レンズが、前記眼鏡装用者が装用する累進レンズの設計基準レンズとして選定される、
請求項19又は請求項20に記載の累進レンズを製造するための方法。 - 請求項19から請求項21の何れか一項に記載の方法を実施することにより作成されたデータを用いて累進レンズを製造するステップ
を含む、
累進レンズの製造方法。 - 請求項19から請求項21の何れか一項に記載の方法をコンピュータに実行させるためのプログラム。
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- 2014-12-26 US US15/108,056 patent/US20160327808A1/en not_active Abandoned
- 2014-12-26 WO PCT/JP2014/084550 patent/WO2015099135A1/ja active Application Filing
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JP2015194511A (ja) * | 2014-03-31 | 2015-11-05 | ホヤ レンズ タイランド リミテッドHOYA Lens Thailand Ltd | 眼鏡レンズを製造するための装置、方法及びプログラム並びに眼鏡レンズの製造方法及びレンズ供給システム |
JP2020518858A (ja) * | 2017-05-02 | 2020-06-25 | エシロール・アンテルナシオナル | 人の眼の乱視を決定するための方法 |
JP2021531506A (ja) * | 2018-07-20 | 2021-11-18 | エシロール・アンテルナシオナル | 対象のグローバル感度パラメータの値を決定する方法、この値を使用する方法及び前記値を決定するためのシステム |
WO2021157001A1 (ja) * | 2020-02-06 | 2021-08-12 | 株式会社ニコン・エシロール | 感受性の評価方法、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、眼鏡レンズ発注装置、眼鏡レンズ受注装置および眼鏡レンズ受発注システム |
WO2023248717A1 (ja) * | 2022-06-22 | 2023-12-28 | 株式会社ニコン・エシロール | 感受性の評価方法および一対の眼鏡レンズの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP3088938A1 (en) | 2016-11-02 |
US20160327808A1 (en) | 2016-11-10 |
EP3088938A4 (en) | 2017-08-02 |
JPWO2015099135A1 (ja) | 2017-03-23 |
JP6284553B2 (ja) | 2018-02-28 |
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