JP4818834B2

JP4818834B2 - Lens meter

Info

Publication number: JP4818834B2
Application number: JP2006181299A
Authority: JP
Inventors: 昌克岩本; 功治池本
Original assignee: Rexxam Co Ltd
Current assignee: Rexxam Co Ltd
Priority date: 2006-06-30
Filing date: 2006-06-30
Publication date: 2011-11-16
Anticipated expiration: 2026-06-30
Also published as: JP2008008830A

Description

本発明は、レンズメータに関する。 The present invention relates to a lens meter.

図９に示すように、被検レンズ３１をレンズ受け３２上に載置して測定光に軸合わせし、その光学特性を測定するレンズメータでは、眼鏡フレームに入ったレンズ３１を測定する際に、当接板３３に眼鏡フレームを当接させて前後方向の位置決めを行い、当接板３３に設けた鼻パット３４に眼鏡の鼻当て３５を当接させて被検レンズ３１の左右方向の位置を測定し、左右のレンズの光学中心間距離（ＰＤ）を算出することができるようになっているものがある。しかし、そのようなレンズメータを用いて、図１０に示すように、眼鏡フレームに入っていない単体のレンズ３１を測定する場合は、鼻パット３４が邪魔になり作業性がよくない。 As shown in FIG. 9, a lens meter that mounts a lens 31 to be measured on a lens receiver 32 and aligns it with measurement light and measures its optical characteristics is used when measuring the lens 31 in the spectacle frame. Then, the eyeglass frame is brought into contact with the contact plate 33 to perform positioning in the front-rear direction, and the nose pad 35 of the glasses is brought into contact with the nose pad 34 provided on the contact plate 33 so that the lens 31 in the left-right direction is positioned. In some cases, the distance between the optical centers (PD) of the left and right lenses can be calculated. However, when such a lens meter is used to measure a single lens 31 that is not contained in the spectacle frame, as shown in FIG. 10, the nasal pad 34 is in the way and the workability is not good.

そこで、特許文献１では、鼻パットを、その後端を中心にして当接板の上方に跳ね上げて退避させられるようにしている。この構成によれば、オペレータは、測定の種類に応じて、鼻パットの上げ下ろしをする必要がある。 Therefore, in Patent Document 1, the nose pad is lifted up and retracted above the contact plate with the rear end as the center. According to this configuration, the operator needs to raise and lower the nasal pad according to the type of measurement.

また、特許文献２では、鼻パットを当接板の下方に垂下して退避させるように回動付勢して支持している。この構成によれば、鼻パットを持ち上げながら、レンズ受け上に被検レンズを配置する慎重な作業が要求される。 Further, in Patent Document 2, the nose pad is supported by being rotated and biased so as to hang down below the contact plate and retract. According to this configuration, a careful operation of placing the test lens on the lens receiver while lifting the nose pad is required.

特許第３４３４９４１号公報Japanese Patent No. 3434941 特開２００５−１５６１７４号公報JP 2005-156174 A

前記問題点を鑑みて、本発明は、鼻パットにより光学中心間距離を容易に測定でき、単体のレンズを測定する際に、鼻パットが邪魔にならないレンズメータを提供することを課題とする。 In view of the above problems, an object of the present invention is to provide a lens meter that can easily measure the distance between optical centers using a nasal pad and that does not interfere with the nasal pad when measuring a single lens.

前記課題を解決するために、本発明によれば、被検レンズの光学特性を測定するレンズメータにおいて、装置本体に前後移動可能に支持され、眼鏡のフレームまたはレンズに当接して眼鏡を前後方向に位置決めする当接板と、前記当接板から前方に突出するように支持され、眼鏡の鼻当てに当接して被検レンズの左右方向の位置を検出する鼻パットとを備え、前記鼻パッドは、前記当接板に回転軸によって枢支され、付勢部材により前記回転軸周りに回動して前方に突出するように付勢され、前記回転軸の後方に突出するレバー部を有し、前記装置本体は、前記当接板を後方に移動したときに、前記レバー部に当接して、前記鼻パットを回動させるレバー当接部を有し、前記当接板を後方に移動させたときに、前記当接板に接近するように後退するとする。 In order to solve the above-described problems, according to the present invention, in a lens meter for measuring optical characteristics of a lens to be examined, the spectacles are supported in the front-rear direction by being supported by the apparatus main body so as to be movable back and forth. A nose pad, and a nose pad that is supported so as to protrude forward from the abutment plate and that abuts on a nose pad of the spectacles and detects a position in the left-right direction of the lens to be examined. Has a lever portion that is pivotally supported on the contact plate by a rotating shaft, is biased so as to rotate around the rotating shaft by the biasing member and protrude forward, and protrudes rearward of the rotating shaft. The apparatus main body has a lever abutting portion that abuts on the lever portion and rotates the nose pad when the abutting plate is moved rearward, and moves the abutting plate rearward. When approaching the abutment plate, And to.

この構成によれば、単体のレンズを測定するために当接板を後退させる動作に連動し、鼻パットが当接板に接近するように後退して退避するので、レンズの測定の際に邪魔にならない。 According to this configuration, in conjunction with the operation of retracting the contact plate in order to measure a single lens, the nose pad is retracted and retracted so as to approach the contact plate. do not become.

また、本発明のレンズメータにおいて、前記鼻パットは、前記当接板に水平移動可能に設けた保持部材に、前記回転軸によって枢支されてもよい。 Further, in the lens meter of the present invention, the nose pad, the holding member which is provided so as to be horizontally moved to the abutment plate may be pivotally supported by the rotary shaft.

本発明のレンズメータでは、当接板の動作に連動して鼻パットが退避するので、オペレータが直接鼻パットを操作しなくても、単体のレンズを測定する際に鼻パットが邪魔にならない。 In the lens meter of the present invention, the nasal pad is retracted in conjunction with the operation of the abutment plate. Therefore, even if the operator does not directly operate the nasal pad, the nasal pad does not get in the way when measuring a single lens.

これより、本発明の実施形態について、図面を参照しながら説明する。
図１に本発明の一つの実施形態であるレンズメータ１を示す。レンズメータ１は、装置本体２の上部から前方に突出し、前面に表示装置３および操作スイッチ４が設けられ、内部に測定光を投光する光学系を備える投光部５と、投光部５の下方に位置し、内部に測定光を受光する光学系を備える受光部６とを有する。 Embodiments of the present invention will now be described with reference to the drawings.
FIG. 1 shows a lens meter 1 according to one embodiment of the present invention. The lens meter 1 protrudes forward from the upper part of the apparatus main body 2, is provided with a display device 3 and an operation switch 4 on the front surface, and includes a light projecting unit 5 including an optical system for projecting measurement light therein, and a light projecting unit 5. And a light receiving unit 6 including an optical system for receiving measurement light therein.

図２に示すように、レンズメータ１は、受光部６の上に、眼鏡７に入れられた被検レンズ８を支持するレンズ受け９が配置され、投光部５と受光部６との間に、被検レンズ８をレンズ受け９の上に押さえつける押さえ部材１０と、眼鏡７のフレームまたはレンズの縁部に当接し、眼鏡７を前後方向（紙面左右方向）に位置決めする当接板１１と、被検レンズ８の光学中心に印点する印点装置１２とを有している。 As shown in FIG. 2, in the lens meter 1, a lens receiver 9 that supports a test lens 8 placed in spectacles 7 is disposed on the light receiving unit 6, and between the light projecting unit 5 and the light receiving unit 6. Further, a pressing member 10 that presses the lens 8 to be tested onto the lens receiver 9, and a contact plate 11 that contacts the frame of the spectacles 7 or the edge of the lens and positions the spectacles 7 in the front-rear direction (left-right direction on the paper). And a marking device 12 for marking the optical center of the lens 8 to be examined.

当接板１１は、装置本体２に対して前後に移動可能に支持されており、該当接板１１から前方に突出する鼻パット１３を備える。鼻パット１３は、当接板１１の上面に左右方向に移動可能に設けられた保持部材１４に枢支されており、眼鏡７の鼻当て１５に当接し、被検レンズ８の軸合わせに従って保持部材１４を左右方向に移動させる。 The contact plate 11 is supported so as to be movable back and forth with respect to the apparatus main body 2, and includes a nose pad 13 protruding forward from the contact plate 11. The nose pad 13 is pivotally supported by a holding member 14 provided on the upper surface of the contact plate 11 so as to be movable in the left-right direction. The nose pad 13 contacts the nose pad 15 of the glasses 7 and is held according to the axial alignment of the lens 8 to be examined. The member 14 is moved in the left-right direction.

レンズメータ１は、眼鏡７の左右を入れ替えて左右の被検レンズ８のそれぞれの光学中心を測定光に軸合わせすることによって生じる保持部材１４の左右方向の移動量を測定することで、光学中心間距離（ＰＤ）を算出できるようになっている。 The lens meter 1 measures the amount of movement of the holding member 14 in the left-right direction by switching the left and right of the glasses 7 and aligning the optical center of each of the left and right test lenses 8 with the measurement light. The distance (PD) can be calculated.

また、図３に示すように、レンズメータ１において、眼鏡７に入れられていない単体の被検レンズ８の光学特性を測定する際は、当接板１１を装置本体２に向かって押し込むようにして、後方に移動できるようになっている。 Further, as shown in FIG. 3, in the lens meter 1, when measuring the optical characteristics of the single lens 8 to be tested that is not put in the glasses 7, the contact plate 11 is pushed toward the apparatus body 2. Can move backwards.

鼻パット１３は、保持部材１４の上方に延伸するレバー部１６を有し、当接板１１を後方に移動させたとき、装置本体２に設けたレバー当接部１７にレバー部１６が当接して、鼻パット１３を回動させるようになっている。 The nose pad 13 has a lever portion 16 extending above the holding member 14, and when the contact plate 11 is moved backward, the lever portion 16 contacts the lever contact portion 17 provided in the apparatus main body 2. Thus, the nose pad 13 is rotated.

図４に、保持部材１４が鼻パット１３を支持する構造を示す。保持部材１４は、左右２つの鼻パット１３を支持している。鼻パット１３は、それぞれ、保持部材１４の前端に、回転軸１８で枢支されるとともに、付勢部材（ばね）１９で前方に突出するように回動付勢されている。 FIG. 4 shows a structure in which the holding member 14 supports the nasal pad 13. The holding member 14 supports the left and right nose pads 13. Each of the nose pads 13 is pivotally urged at the front end of the holding member 14 by a rotation shaft 18 and is urged to rotate forward by a biasing member (spring) 19.

図５に示すように、鼻パット１３は、付勢部材１９によって、回転軸１８を中心に回動するが、レバー部１６の根元が保持部材１４の上面に当接し、前方に突出した状態で係止される。また、鼻パット１３は、レバー部１６を前方に回動させることで、二点鎖線で示すように、当接板１１に接近するように回動して後退させられる。 As shown in FIG. 5, the nose pad 13 is rotated about the rotation shaft 18 by the biasing member 19, but the base of the lever portion 16 is in contact with the upper surface of the holding member 14 and protrudes forward. Locked. Further, the nose pad 13 is rotated back so as to approach the contact plate 11 as indicated by a two-dot chain line by rotating the lever portion 16 forward.

図６に、当接板１１の保持構造を示す。当接板１１は、装置本体２の内部に延伸する移動部材２０に保持され、移動部材２０は、装置本体２の内部でリニアレール２１により前後移動可能に保持されている。移動部材２０の後端には、オス型係合部材２２が固定されており、装置本体２に固定したメス型係合部材２３に係合可能である。メス型係合部材２３は、オス型係合部材２２を押し込むとオス型係合部材２２を挟み込んで保持し、再度オス型係合部材２２を押し込むとオス型係合部材２２を解放するようになっている。 FIG. 6 shows a holding structure of the contact plate 11. The contact plate 11 is held by a moving member 20 extending inside the apparatus main body 2, and the moving member 20 is held inside the apparatus main body 2 by a linear rail 21 so as to be movable back and forth. A male engagement member 22 is fixed to the rear end of the moving member 20 and can be engaged with a female engagement member 23 fixed to the apparatus main body 2. The female engagement member 23 sandwiches and holds the male engagement member 22 when the male engagement member 22 is pushed in, and releases the male engagement member 22 when the male engagement member 22 is pushed again. It has become.

本発明のレンズメータにおいて、鼻パット１３は、付勢部材１９の付勢力によって、レンズ受け９の上に載置した被検レンズ８を有する眼鏡７の鼻当て１５の間に嵌り込む。この状態で被検レンズ８を測定光に軸合わせすることで、鼻パット１３は、保持部材１４と共に、当接板１１に対して水平方向に移動させられる。 In the lens meter of the present invention, the nose pad 13 is fitted between the nose pads 15 of the eyeglasses 7 having the test lens 8 placed on the lens receiver 9 by the biasing force of the biasing member 19. By aligning the lens 8 to be measured with the measurement light in this state, the nasal pad 13 is moved along with the holding member 14 in the horizontal direction with respect to the contact plate 11.

単体のレンズ８の光学特性を測定する際は、当接板１１を装置本体２に向かって後方に押し込むことで、オス型係合部材２２をメス型係合部材２３に保持させ、当接板１１を後退した状態に保持する。このとき、鼻パット１３のレバー部１６がレバー当接部１７に当接して、鼻パット１３を付勢部材１９の付勢力に抗して回動させ、当接板１１に接近するように後退させる。 When measuring the optical characteristics of the single lens 8, the contact plate 11 is pushed backward toward the apparatus main body 2 to hold the male engagement member 22 on the female engagement member 23, and the contact plate 11 is held in the retracted state. At this time, the lever portion 16 of the nose pad 13 comes into contact with the lever contact portion 17, rotates the nose pad 13 against the biasing force of the biasing member 19, and moves backward so as to approach the contact plate 11. Let

このため、当接板１１が後退する以上に、鼻パット１３がレンズ受け９から後退するので、単体の被検レンズ８をレンズ受け９の上で測定光に軸合わせする際に、オペレータの手に当たって邪魔にならない。 For this reason, since the nose pad 13 is retracted from the lens receiver 9 more than the contact plate 11 is retracted, the operator's hand is required to align the single lens 8 to be measured on the lens receiver 9 with the measuring light. It wo n’t get in the way.

また、鼻パッド１３が突出したまま、鼻パッド１３が邪魔にならない程度に当接板１１を後退させようとすると、移動部材２０のストロークが大きくなり、レンズメータ１が大型化してしまう。つまり、本発明は、鼻パット１３を回動して後退させることで、レンズメータ１の小型化に寄与しているということもできる。 Further, if the contact plate 11 is moved backward so that the nose pad 13 does not interfere with the nose pad 13 protruding, the stroke of the moving member 20 becomes large, and the lens meter 1 becomes large. That is, it can be said that the present invention contributes to the miniaturization of the lens meter 1 by rotating and retracting the nose pad 13.

さらに、本発明によれば、図８に示す代案のように、鼻パット１３を当接板１１の下側において枢支するものであってもよい。 Furthermore, according to the present invention, the nose pad 13 may be pivotally supported on the lower side of the contact plate 11 as in the alternative shown in FIG.

本発明の第１実施形態のレンズメータの斜視図。The perspective view of the lens meter of 1st Embodiment of this invention. 図１のレンズメータの光学中心間距離測定時の部分側面図。The partial side view at the time of the optical center distance measurement of the lens meter of FIG. 図１のレンズメータの単体レンズ測定時の部分側面図。The partial side view at the time of the single lens measurement of the lens meter of FIG. 図１のレンズメータ鼻パットの支持構造を示す分解斜視図。The disassembled perspective view which shows the support structure of the lens meter nose pad of FIG. 図４の鼻パットおよび保持部材の断面図。Sectional drawing of the nose pad and holding member of FIG. 図１の当接板の保持構造の光学中心間距離測定時を示す概略図。Schematic which shows the time of optical center distance measurement of the holding structure of the contact plate of FIG. 図１の当接板の保持構造の光単体レンズ測定時を示す概略図。Schematic which shows the time of the optical single lens measurement of the holding structure of the contact plate of FIG. 図１のレンズメータの鼻パットの支持構造の代案を示す概略図。Schematic which shows the alternative of the support structure of the nose pad of the lens meter of FIG. 従来のレンズメータにおける光学中心間距離測定時を示す正面図。The front view which shows the time of the distance measurement between optical centers in the conventional lens meter. 従来のレンズメータにおける単体レンズ測定時を示す平面図。The top view which shows the time of the single lens measurement in the conventional lens meter.

Explanation of symbols

１レンズメータ
７眼鏡
８被検レンズ
９レンズ受け
１１当接板
１３鼻パット
１４保持部材
１５鼻当て
１６レバー部
１７レバー当接部
１８回転軸
１９付勢部材 DESCRIPTION OF SYMBOLS 1 Lens meter 7 Glasses 8 Test lens 9 Lens receiver 11 Contact plate 13 Nasal pad 14 Holding member 15 Nose pad 16 Lever part 17 Lever contact part 18 Rotating shaft 19 Energizing member

Claims

In a lens meter that measures the optical characteristics of the lens under test,
A contact plate that is supported by the apparatus main body so as to be movable back and forth, and that contacts the frame or lens of the glasses to position the glasses in the front-rear direction;
A nose pad that is supported so as to protrude forward from the abutment plate and that abuts against the nose pad of the glasses to detect the position in the left-right direction of the lens to be examined;
The nose pad is pivotally supported on the abutment plate by a rotation shaft, is biased so as to rotate around the rotation shaft by the biasing member and protrude forward, and a lever portion protruding rearward of the rotation shaft Have
The apparatus main body has a lever contact portion that contacts the lever portion and rotates the nose pad when the contact plate is moved rearward.
A lens meter, wherein when the contact plate is moved backward, the lens meter is retracted so as to approach the contact plate.

The nose pads, the lens meter according to claim 1, wherein the holding member provided to be horizontally moved to the contact plate, characterized in that it is pivotally supported by the rotary shaft.