JP2003329984A - Method and apparatus for computing inset quantity of progressive refractive power lens and program recording medium - Google Patents
Method and apparatus for computing inset quantity of progressive refractive power lens and program recording mediumInfo
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- JP2003329984A JP2003329984A JP2002137605A JP2002137605A JP2003329984A JP 2003329984 A JP2003329984 A JP 2003329984A JP 2002137605 A JP2002137605 A JP 2002137605A JP 2002137605 A JP2002137605 A JP 2002137605A JP 2003329984 A JP2003329984 A JP 2003329984A
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- prism
- progressive
- distance
- power lens
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、累進屈折力レンズ
のインセット量計算方法および計算装置、さらにはプロ
グラム記録媒体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for calculating an inset amount of a progressive-power lens, and a program recording medium.
【０００２】[0002]
【従来の技術】一般的に累進屈折力レンズには、図３に
示すように、レンズの上方に有って遠くのものを見るた
めの遠用部領域１と、レンズの下方に有って近くのもの
を見るための近用部領域２と、遠用部領域１と近用部領
域２のとの中間に有って連続的に屈折力の変わる累進部
領域３と、側方部領域４、５とが存在する。さらに、レ
ンズのほぼ中央を通り、遠用部領域１、累進部領域３、
近用部領域２を貫いて、主注視線６が存在する。主注視
線６は最も良く視線が通過することが期待されるため、
レンズの収差が良く補正されている。2. Description of the Related Art Generally, as shown in FIG. 3, a progressive-power lens has a distance portion region 1 above the lens for viewing a far object and below the lens. A near portion area 2 for viewing a near object, a progressive portion area 3 between the distance portion area 1 and the near portion area 2 and having a continuously changing refractive power, and a side portion area. There are four and five. Further, it passes through almost the center of the lens, and the distance portion area 1, the progressive portion area 3,
A main gaze line 6 exists through the near portion area 2. The main line of sight 6 is expected to pass the best line of sight,
The lens aberration is well corrected.
【０００３】通常、近くの物体を見る場合には、人間の
眼は輻輳と呼ばれる眼球運動を生じ、遠くを見る場合よ
り視線が鼻側へと変位する。従って、累進屈折力レンズ
ではこの視線の変位量を考慮し、遠用部領域１より近用
部領域２を鼻側に変位させている。このとき、遠用部領
域１における主注視線６の水平位置と、近用部領域２に
おける主注視線６の水平位置との差を、以下ではインセ
ット量と呼ぶ。なお、近用部領域２が鼻側に変位した状
態をプラス符号のインセット量で表し、耳側に変位した
場合をマイナス符号のインセット量で表す。Normally, when looking at a near object, the human eye causes an eye movement called convergence, and the line of sight is displaced to the nose side when looking at a distance. Therefore, in the progressive-power lens, the near portion area 2 is displaced from the distance portion area 1 toward the nose side in consideration of the displacement amount of the line of sight. At this time, the difference between the horizontal position of the main gaze line 6 in the distance portion region 1 and the horizontal position of the main gaze line 6 in the near portion region 2 is referred to as an inset amount below. The state in which the near portion area 2 is displaced to the nose side is represented by a plus sign inset amount, and the case in which it is displaced to the ear side is represented by a minus sign inset amount.
【０００４】従来の累進屈折力レンズでは、インセット
量は２．５〜３．０ｍｍ程度に設定されているが、古く
から眼鏡レンズの枠入れの基準として知られているドイ
ツのＲＡＬ−ＲＧ９１５には、遠用屈折力や加入屈折力
の他、近用作業距離、遠用ＰＤなどによってインセット
量を調整するという概念が明示されている。In the conventional progressive-power lens, the amount of inset is set to about 2.5 to 3.0 mm, but the RAL-RG915 of Germany, which has long been known as a standard for framing spectacle lenses, is used. Stipulates the concept of adjusting the inset amount according to the near working distance, the distance PD, etc., in addition to the distance refractive power and the addition refractive power.
【０００５】また、特開平１１−３０５１７３号公報に
は、ＲＡＬ−ＲＧ９１５と同様の考えを累進屈折力レン
ズに適用している。In Japanese Patent Laid-Open No. 11-305173, the same idea as that of RAL-RG915 is applied to a progressive-power lens.
【０００６】[0006]
【発明が解決しようとする課題】インセット量を遠用屈
折力や加入屈折力の他、近用作業距離、遠用ＰＤなどに
よって計算する場合のポイントの一つは、近用部領域１
２におけるプリズム屈折力の水平成分をどのように決定
するかということである。つまり、近用部プリズムの水
平成分によって視線がどれくらい屈折させられるかによ
って、レンズ上の視線の通過位置が異なるからである。
特開平１１−３０５１７３号公報では、遠用屈折力と加
入屈折力の和から近用屈折力を求め、これにインセット
量を掛けたものが近用プリズムの水平成分で有るとして
いる。しかしながら、この計算はかなり粗い近似計算で
あり、近用度数が大きくなると誤差が無視できなくな
る。One of the points in the case of calculating the inset amount by the distance working power, the distance PD in addition to the distance power and the addition power is the near vision area 1
2 is how to determine the horizontal component of the prismatic power in 2. That is, the position where the line of sight passes on the lens differs depending on how much the line of sight is refracted by the horizontal component of the near-distance prism.
In Japanese Patent Laid-Open No. 11-305173, the near power is calculated from the sum of the distance power and the addition power, and the product of the near power and the inset amount is the horizontal component of the near prism. However, this calculation is a fairly rough approximation, and the error cannot be ignored when the near dioptric power becomes large.
【０００７】[0007]
【課題を解決するための手段】従来の荒い近似計算に替
わり、本件の累進屈折力レンズのインセット量計算方法
は累進屈折力レンズの近用インセット量を計算する方法
において、累進屈折力レンズの遠用部基準点と近用部基
準点を通る断面上の屈折力に基づき近用部プリズムを求
める手順を有することを特徴とする。In lieu of the conventional rough approximation calculation, the method of calculating the inset amount of the progressive-power lens of the present invention is the method of calculating the near-inset amount of the progressive-power lens. It is characterized by having a procedure for obtaining a near vision prism based on the refractive power on the cross section passing through the far vision reference point and the near vision reference point.
【０００８】さらに、近用部プリズムの水平成分を求め
る手順と、前記近用プリズムの水平成分に応じて視線の
屈折量を求める手順とを有することを特徴とする。Further, it is characterized in that it further comprises a procedure for obtaining a horizontal component of the near vision prism and a procedure for obtaining a refraction amount of the line of sight in accordance with the horizontal component of the near vision prism.
【０００９】上記の計算方法を実行するために、本件の
累進屈折力レンズのインセット量計算装置は、累進屈折
力レンズの装用者の個別装用状況データを入力する手段
と、累進屈折力レンズの遠用部基準点と近用部基準点を
通る断面上の屈折力変化に基づき近用部プリズムを求め
る演算手段とを有することを特徴とする。In order to execute the above-described calculation method, an inset amount calculation device for a progressive addition lens according to the present invention includes a unit for inputting individual wear situation data of a wearer of the progressive addition lens and a progressive addition lens of the progressive addition lens. The present invention is characterized by including a calculating means for obtaining a near-distance prism based on a change in refractive power on a cross section passing through the distance-use reference point and the near-use reference point.
【００１０】また、近用部プリズムの水平成分を求める
演算手段と、前記近用プリズムの水平成分に応じて視線
の屈折量を求める演算手段とを有することを特徴とす
る。Further, the present invention is characterized by comprising a calculating means for obtaining a horizontal component of the near-distance prism and an arithmetic means for obtaining a refraction amount of the line of sight according to the horizontal component of the near-distance prism.
【００１１】さらに、本件のコンピュータ読み取り可能
なプログラム記録媒体は累進屈折力レンズの遠用部基準
点と近用部基準点を通る断面上の屈折力変化に基づき近
用部プリズムを求める演算機能をコンピュータに実行さ
せるためのプログラムを記録されていることを特徴とす
る。Further, the computer-readable program recording medium of the present invention has an arithmetic function for obtaining a near portion prism based on a change in refractive power on a cross section passing through the distance portion reference point and the near portion reference point of the progressive-power lens. It is characterized in that a program for causing a computer to execute is recorded.
【００１２】また、近用部プリズムの水平成分を求める
演算機能と、前記近用プリズムの水平成分に応じて視線
の屈折量を求める演算機能とをコンピュータに実行させ
るためのプログラムを記録されていることを特徴とす
る。Further, a program for causing a computer to execute a calculation function for obtaining a horizontal component of the near-distance prism and a calculation function for obtaining a refraction amount of the line of sight according to the horizontal component of the near-vision prism is recorded. It is characterized by
【００１３】[0013]
【発明の実施の形態】図１は本発明のインセット量計算
装置の構成を示す図である。情報入力装置１１により、
遠用度数ＤＦ、加入屈折力ＡＤＤ、近用物体距離ＯＤ、
遠用瞳孔間距離ＰＤといった、累進屈折力レンズ装用者
の個別装用状況データを入力する。演算装置１２はこれ
らの情報を元に、近用部のプリズム量を予測計算し、近
用物体を両眼視するために最も良い近用インセット量Ｈ
を算出する。近用インセット量Ｈを算出する手順は、プ
ログラム記録媒体１４に記録されたプログラムにより指
示される。計算結果は記録装置１３に記録された後、電
話回線やネットワークその他の手段によって、レンズ製
造場所に伝えられる。FIG. 1 is a diagram showing the configuration of an inset amount calculation device of the present invention. By the information input device 11,
Distance power DF, addition power ADD, near object distance OD,
The individual wear situation data of the progressive power lens wearer such as the distance pupil distance PD is input. The computing device 12 predicts and calculates the prism amount of the near portion based on these pieces of information, and determines the best near inset amount H for binocular vision of the near object.
To calculate. The procedure for calculating the near inset amount H is instructed by the program recorded in the program recording medium 14. The calculation result is recorded in the recording device 13 and then transmitted to the lens manufacturing place by a telephone line, a network or other means.
【００１４】図２は、インセット量を決定する要因を説
明する図である。同図は、近用物体距離ＯＤ、遠用瞳孔
間距離ＰＤ、眼球回旋距離ＥＰ、及びインセット量Ｈの
関係を示す。また、レンズの要素として遠用度数ＤＦ、
加入屈折力ＡＤＤがある。このような図は特開平１１−
３０５１７３号公報にも記載されているが、本件の大き
な違いは、図２のレンズ断面図が眼球の正面位置で、プ
リズムを伴っているように、凸面と凹面が非並行になっ
ている点である。単焦点レンズのように、レンズの光軸
付近での議論では眼球の正面で凸面と凹面とが並行であ
るという仮定は成り立つが、累進屈折力レンズの場合は
問題が生じる。FIG. 2 is a diagram for explaining the factors that determine the inset amount. This figure shows the relationship among the near object distance OD, the distance interpupillary distance PD, the eyeball rotation distance EP, and the inset amount H. In addition, as a lens element
There is an add power ADD. Such a diagram is disclosed in
As described in Japanese Patent No. 305173, the major difference of this case is that the convex surface and the concave surface are not parallel to each other like the prism in the sectional view of the lens in FIG. is there. As in the case of a monofocal lens, the assumption that the convex surface and the concave surface are parallel to each other in front of the eyeball holds in the discussion near the optical axis of the lens, but a problem occurs in the case of a progressive-power lens.
【００１５】図３は累進屈折力レンズの遠用部、累進
部、近用部のレイアウトを示すものである。インセット
量を考えるべき近用部は、レンズの中心から離れた位置
にあり、また、近用部の側方は複雑に度数が変化してい
るため、この位置でのレンズの水平断面の形状を特定す
ることは困難である。特開平１１−３０５１７３号公報
のような近似を行った場合には、特に遠用度数や加入屈
折力が大きい場合に誤差が無視できなくなる。FIG. 3 shows the layout of the distance portion, the progressive portion, and the near portion of the progressive-power lens. The near portion where the amount of inset should be considered is at a position away from the center of the lens, and the lateral side of the near portion has complicated changes in frequency, so the shape of the horizontal cross section of the lens at this position Is difficult to identify. When approximation is performed as in Japanese Patent Laid-Open No. 11-305173, the error cannot be ignored especially when the distance dioptric power or the addition refractive power is large.
【００１６】本発明では、累進帯に沿ったレンズ度数の
変化は、累進レンズ設計のパラメータの一つであり、レ
ンズによって一義的に決まっていることに注目し、より
正確にインセット量を計算する方法を提供する。図３の
遠用部基準点Ｄｐと近用部基準点Ｎｐを結ぶ線上の屈折
力を、Ｄｐからの距離ｌの関数としてｆ（ｌ）と表す
と、レンズのプリズムを計算するプレンティスの公式の
拡張から、ＮｐにおけるＤｐ−Ｎｐ方向のプリズムＰｎ
は以下の式により求まる。In the present invention, the change in the lens power along the progressive zone is one of the parameters of the progressive lens design, and it is noted that it is uniquely determined by the lens, and the inset amount is calculated more accurately. Provide a way to do. If the refractive power on the line connecting the distance portion reference point Dp and the near portion reference point Np in FIG. 3 is expressed as f (l) as a function of the distance l from Dp, the Prentice formula for calculating the prism of the lens is given. From the extension of the prism Pn in the Dp-Np direction at Np
Is calculated by the following formula.
【００１７】[0017]
【化１】 [Chemical 1]
【００１８】ここで、ＰｗはＤｐ−Ｎｐ方向の遠用度数
成分である。また、ＬはＤｐからＮｐまでの距離であ
り、累進帯長と呼ぶ。［Δ］はプリズム屈折力の単位を
表す記号で、プリズムディオプトリと読む。関数ｆ
（ｌ）は累進レンズ設計パラメータの一つであるから、
レンズ製造者には既知であり、従って式（１）によるプ
リズムは容易に計算できる。Here, Pw is a distance dioptric power component in the Dp-Np direction. L is the distance from Dp to Np and is called the progressive zone length. [Δ] is a symbol representing the unit of prism refractive power, and is read as prism diopter. Function f
Since (l) is one of the progressive lens design parameters,
Known to the lens manufacturer, the prism according to equation (1) is therefore easy to calculate.
【００１９】式（１）によりＤｐ−Ｎｐ方向のプリズム
量は求まったが、インセットに寄与するのはこの内の水
平方向成分だけであるから、以下の式により水平方向プ
リズムＰｎｘを求める。Although the prism amount in the Dp-Np direction is obtained by the equation (1), only the horizontal component of the amount contributes to the inset, so the horizontal prism Pnx is obtained by the following equation.
【００２０】[0020]
【化２】 [Chemical 2]
【００２１】ここで、θはＤｐ−Ｎｐの方向と、レンズ
の鉛直方向の成す角度である。Here, θ is the angle between the direction of Dp-Np and the vertical direction of the lens.
【００２２】以上で、任意の近用位置におけるプリズム
の水平成分が決まるので、この近用位置に眼球の視線を
向けたとき、プリズム作用によって視線が変位する量が
計算できる。この変位した視線が、近用物体距離ＯＤを
通過しない場合は、近用部の位置を変えて再計算する。As described above, since the horizontal component of the prism at any near position is determined, when the line of sight of the eyeball is directed to this near position, the amount of displacement of the line of sight by the prism action can be calculated. When the displaced line of sight does not pass the near object distance OD, the position of the near portion is changed and recalculation is performed.
【００２３】図４はこれらの計算手順を示したフローチ
ャートである。FIG. 4 is a flow chart showing these calculation procedures.
【００２４】以下では、簡単な例を用いて具体的な計算
例を示す。遠用度数ＤＦ＝３．００（ディオプトリー：
以下ではＤと表す）、加入屈折力ＡＤＤ＝２．００
（Ｄ）、ＤｐからＮｐまでの屈折力がｆ（ｌ）＝（ＡＤ
Ｄ／Ｌ）・ｌ＋ＰＷで表されるとする。遠用部は乱視屈
折力を持たないのでどの方向にも３．００（Ｄ）の屈折
力を有するから、Ｄｐ−Ｎｐ方向の屈折力Ｐｗも３．０
０（Ｄ）である。また、ＤｐとＮｐの間の距離をＬ＝
１．４（ｃｍ）とする。式（１）にこの関数ｆ（ｌ）を
代入すると、以下のようにＮｐにおけるＤｐ−Ｎｐ方向
のプリズム屈折力Ｐｎが求まる。A specific calculation example will be shown below by using a simple example. Distance power DF = 3.00 (Diopter:
Hereinafter referred to as D), the addition power ADD = 2.00
(D), the refractive power from Dp to Np is f (l) = (AD
D / L) · l + PW. Since the distance portion does not have astigmatic power, it has a refractive power of 3.00 (D) in any direction, and thus the refractive power Pw in the Dp-Np direction is also 3.0.
It is 0 (D). Also, the distance between Dp and Np is L =
It is set to 1.4 (cm). By substituting this function f (l) into the equation (1), the prism refractive power Pn in the Dp-Np direction at Np is obtained as follows.
【００２５】[0025]
【化３】 [Chemical 3]
【００２６】プリズム屈折力の水平成分を求めるために
Ｄｐ−Ｎｐの角度θを求める必要があるが、インセット
量をＨとするとθ＝sin-1（Ｈ／Ｌ）で求まる。従っ
て、仮のインセット量をＨ＝０．２５（ｃｍ）とする
と、近用プリズム屈折力Ｐｎの水平成分Ｐｎｘは以下の
様に計算される。The angle θ of Dp-Np needs to be obtained in order to obtain the horizontal component of the prism refracting power, but if the inset amount is H, then θ = sin −1 (H / L). Therefore, if the provisional inset amount is H = 0.25 (cm), the horizontal component Pnx of the near prism refractive power Pn is calculated as follows.
【００２７】[0027]
【化４】 [Chemical 4]
【００２８】このように、仮のインセット量Ｈ＝０．２
５（ｃｍ）に対して、近用プリズムの水平成分が求まっ
たので、レンズ通過後の視線の方向がどれくらいずれる
かは、一般的なプリズムによる屈折計算から求まる。さ
らにこの視線が顔の正面からどれくらいの距離で中心線
と交差するかも容易に計算できる。この交差点の位置
が、初めに指定された近用作業距離に合致すれば、この
レンズにおけるインセット量Ｈは０．２５（ｃｍ）で良
いことになる。もし、視線が近用作業距離と合致しない
場合には仮のインセット量を増減させて、視線が近用作
業距離の点を通過するようなＨを求めてやれば良い。Thus, the provisional inset amount H = 0.2
Since the horizontal component of the near prism is obtained for 5 (cm), how much the direction of the line of sight after passing through the lens is deviated can be obtained by refraction calculation using a general prism. Furthermore, it is easy to calculate how far this line of sight intersects the center line from the front of the face. If the position of this intersection coincides with the near working distance specified at the beginning, the inset amount H in this lens will be 0.25 (cm). If the line of sight does not match the near working distance, the provisional inset amount may be increased or decreased to obtain H such that the line of sight passes through the point of the near working distance.
【００２９】[0029]
【発明の効果】本発明の累進屈折力レンズのインセット
量計算方法は、近用部のプリズム計算を、従来の計算方
法に比べて精度良く行うことができる。According to the method of calculating the inset amount of the progressive-power lens of the present invention, the prism calculation for the near portion can be performed more accurately than the conventional calculation method.
【００３０】本発明の累進屈折力レンズのインセット量
計算方法は、コンピュータのプログラムにして２０〜３
０行程度の非常に簡単な手順で実現することができる。
このため、記録媒体に記録して、眼鏡小売店などに有る
一般的なコンピュータで計算を行うことができ、小売店
から眼鏡レンズメーカーに発注する際に、個々のお客の
寸法に合わせて近用インセット量を設定することができ
る。The method for calculating the inset amount of the progressive-power lens of the present invention is a computer program of 20 to 3
It can be realized by a very simple procedure of about 0 lines.
For this reason, it is possible to record on a recording medium and perform the calculation with a general computer in an eyeglass retail store, etc. The inset amount can be set.
【００３１】さらに、この計算プログラムはファイルの
要領が非常に少ないので、インターネットなどのネット
ッワークを使って配布することもできる。このようにし
て配布されたプログラムを記録した場合、その記録媒体
も本発明に含まれる。Furthermore, since this calculation program requires very few files, it can be distributed using a network such as the Internet. When the program distributed in this way is recorded, the recording medium is also included in the present invention.
【図１】本発明のインセット量計算装置の構成を示す概
念図。FIG. 1 is a conceptual diagram showing a configuration of an inset amount calculation device of the present invention.
【図２】インセット量を決定する要因を示す図。FIG. 2 is a diagram showing factors that determine an inset amount.
【図３】累進屈折力レンズのレイアウトを示す図。FIG. 3 is a diagram showing a layout of a progressive-power lens.
【図４】計算手順を示したフローを示す図。FIG. 4 is a diagram showing a flow showing a calculation procedure.
１ 遠用部領域 ２ 近用部領域 ３ 累進部領域 ４、５ 側方部領域 ６ 主注視線 １１ 情報入力装置 １２ 演算装置 １３ 記録装置 １４ プログラム記憶媒体 ＯＤ 近用作業距離 ＥＰ レンズ後面から眼球回旋中心までの距離 Ｈ 近用部のインセット量 ＰＤ 遠方視時の瞳孔間距離 ＤＦ 遠用度数 ＡＤＤ 加入屈折力 Ｄｐ 遠用部基準点 Ｎｐ 近用部基準点 Ｌ ＤｐとＮｐの距離 θ Ｄｐ−Ｎｐ方向の角度 1 distance area 2 Near part area 3 Progressive area 4, 5 lateral areas 6 main gaze 11 Information input device 12 arithmetic unit 13 Recording device 14 Program storage medium OD near working distance Distance from the back of the EP lens to the center of eye rotation H Near inset amount PD Distance between pupils in far vision DF distance power ADD add power Dp distance reference point Np Near part reference point Distance between L Dp and Np θ Dp-Np direction angle
Claims (6)
計算する方法において、累進屈折力レンズの遠用部基準
点と近用部基準点を通る断面上の屈折力に基づき近用部
プリズムを求める手順を有することを特徴とする累進屈
折力レンズのインセット量計算方法。1. A method for calculating a near vision inset amount of a progressive power lens, wherein the near vision prism is based on a refractive power on a cross section passing through the far vision reference point and the near vision reference point of the progressive power lens. A method for calculating an inset amount of a progressive-power lens, which has a procedure for obtaining
において、近用部プリズムの水平成分を求める手順と、
前記近用プリズムの水平成分に応じて視線の屈折量を求
める手順とを有することを特徴とする累進屈折力レンズ
のインセット量計算方法。2. The method of calculating the inset amount according to claim 1, wherein the horizontal component of the near portion prism is obtained.
And a procedure for obtaining the amount of refraction of the line of sight according to the horizontal component of the near-distance prism.
況データを入力する手段と、累進屈折力レンズの遠用部
基準点と近用部基準点を通る断面上の屈折力変化に基づ
き近用部プリズムを求める演算手段とを有することを特
徴とする累進屈折力レンズのインセット量計算装置。3. A means for inputting individual wear situation data of a wearer of a progressive-power lens, and a proximity based on a change in refractive power on a cross section passing through the distance-use reference point and the near-use reference point of the progressive-power lens. An inset amount calculation device for a progressive-power lens, comprising: an arithmetic means for obtaining a use portion prism.
において、近用部プリズムの水平成分を求める演算手段
と、前記近用プリズムの水平成分に応じて視線の屈折量
を求める演算手段とを有することを特徴とする累進屈折
力レンズのインセット量計算装置。4. The inset amount calculation device according to claim 3, further comprising: calculating means for obtaining a horizontal component of the near-distance prism; and calculating means for obtaining a refraction amount of the line of sight in accordance with the horizontal component of the near-vision prism. An inset amount calculation device for a progressive-power lens, comprising:
部基準点を通る断面上の屈折力変化に基づき近用部プリ
ズムを求める演算機能をコンピュータに実行させるため
のプログラムを記録したコンピュータ読み取り可能なプ
ログラム記録媒体。5. A program for causing a computer to execute an arithmetic function for obtaining a near portion prism based on a change in refractive power on a cross section passing through a distance portion reference point and a near portion reference point of a progressive power lens is recorded. A computer-readable program recording medium.
おいて、近用部プリズムの水平成分を求める演算機能
と、前記近用プリズムの水平成分に応じて視線の屈折量
を求める演算機能とをコンピュータに実行させるための
プログラムを記録したコンピュータ読み取り可能なプロ
グラム記録媒体。6. The program recording medium according to claim 5, wherein a computer having a calculation function for obtaining a horizontal component of the near-distance prism and a calculation function for obtaining a refraction amount of the line of sight according to the horizontal component of the near-vision prism. A computer-readable program recording medium recording a program to be executed by a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002137605A JP2003329984A (en) | 2002-05-13 | 2002-05-13 | Method and apparatus for computing inset quantity of progressive refractive power lens and program recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002137605A JP2003329984A (en) | 2002-05-13 | 2002-05-13 | Method and apparatus for computing inset quantity of progressive refractive power lens and program recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003329984A true JP2003329984A (en) | 2003-11-19 |
Family
ID=29699310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002137605A Withdrawn JP2003329984A (en) | 2002-05-13 | 2002-05-13 | Method and apparatus for computing inset quantity of progressive refractive power lens and program recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003329984A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1701201A1 (en) | 2005-03-09 | 2006-09-13 | Seiko Epson Corporation | Method of designing progressive power lens group |
| JP2010517088A (en) * | 2007-01-25 | 2010-05-20 | ローデンストック．ゲゼルシャフト．ミット．ベシュレンクテル．ハフツング | Method for determining reference points for distance and near parts |
| JP2011232722A (en) * | 2010-04-28 | 2011-11-17 | Terajima Shigeru | Special prism calculation method |
| JP2013076933A (en) * | 2011-09-30 | 2013-04-25 | Seiko Epson Corp | Progressive refractive power lens and manufacturing method for progressive refractive power lens |
| US8550622B2 (en) | 2010-11-08 | 2013-10-08 | Hoya Lens Manufacturing Philippines Inc. | Progressive power lens and progressive power lens design method |
-
2002
- 2002-05-13 JP JP2002137605A patent/JP2003329984A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1701201A1 (en) | 2005-03-09 | 2006-09-13 | Seiko Epson Corporation | Method of designing progressive power lens group |
| US7364292B2 (en) | 2005-03-09 | 2008-04-29 | Seiko Epson Corporation | Method of designing progressive power lens group |
| JP2010517088A (en) * | 2007-01-25 | 2010-05-20 | ローデンストック．ゲゼルシャフト．ミット．ベシュレンクテル．ハフツング | Method for determining reference points for distance and near parts |
| JP2011232722A (en) * | 2010-04-28 | 2011-11-17 | Terajima Shigeru | Special prism calculation method |
| US8550622B2 (en) | 2010-11-08 | 2013-10-08 | Hoya Lens Manufacturing Philippines Inc. | Progressive power lens and progressive power lens design method |
| JP2013076933A (en) * | 2011-09-30 | 2013-04-25 | Seiko Epson Corp | Progressive refractive power lens and manufacturing method for progressive refractive power lens |
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