JPH0774850B2 - Lens body - Google Patents
Lens bodyInfo
- Publication number
- JPH0774850B2 JPH0774850B2 JP7320790A JP7320790A JPH0774850B2 JP H0774850 B2 JPH0774850 B2 JP H0774850B2 JP 7320790 A JP7320790 A JP 7320790A JP 7320790 A JP7320790 A JP 7320790A JP H0774850 B2 JPH0774850 B2 JP H0774850B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- support frame
- supporting
- barrel
- anamorphic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
- Lens Barrels (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、レンズ鏡体、例えばレーザ光用レンズ鏡体に
関するものである。The present invention relates to a lens mirror body, for example, a laser beam lens mirror body.
従来より一般的に使用されているレーザ光用レンズ鏡体
としては、第９図と第10図に示したように、大口径の球
面レンズ1,3とアナモルフィックレンズとしてのシリン
ドリカルレンズ２とをそれぞれ四角形となし、これらの
レンズの向い合った一組の辺縁部を支持用凹溝を有する
押え板4,5にて支持固定せしめ、押え板4,5を連結板6,7
にて連結してなるものが知られている。As a lens body for laser light that has been generally used in the past, as shown in FIGS. 9 and 10, a large-diameter spherical lens 1 and 3 and a cylindrical lens 2 as an anamorphic lens are used. Each of which is a quadrangle, and a pair of facing edges of these lenses are supported and fixed by holding plates 4 and 5 having supporting grooves, and the holding plates 4 and 5 are connected to each other by connecting plates 6 and 7.
It is known that they are linked together.
しかしながら、この種のレーザ光用レンズ鏡体にあって
は、レンズ系を構成する四角形のレンズは大口径である
ので、公差を厳しくできないうえに、研磨したレンズを
そのまま鏡筒に組立てたのでは設計性能が出ない可能性
がある。さらに、各レンズの向い合った一組の辺縁部を
鏡筒を構成する支持用凹溝を有する押え板にて支持固定
せしめたものであるので、鏡筒の軸心に対して球面レン
ズの光軸の偏心やシリンドリカルレンズの母線倒れがな
いように組立てることは困難であり、組立て後において
球面レンズの光軸の偏心やシリンドリカルレンズの母線
倒れを調整することは不可能であるとうい欠点があっ
た。However, in this type of lens body for laser light, since the quadrangular lens forming the lens system has a large aperture, the tolerance cannot be made tight, and the polished lens may not be assembled as it is to the lens barrel. The design performance may not be achieved. Further, since a pair of facing edge portions of each lens are supported and fixed by a holding plate having a supporting groove forming a lens barrel, the spherical lens of the spherical lens with respect to the axis of the lens barrel is fixed. It is difficult to assemble the lens so that there is no decentering of the optical axis and no tilt of the cylindrical lens, and it is impossible to adjust the eccentricity of the optical axis of the spherical lens and the tilt of the cylindrical lens after assembly. there were.
本発明は、上述の事情に鑑みてなされたものであって、
その目的とするところは、組立てが容易で、鏡筒の軸心
に対してレンズ系を構成する球面レンズには光軸の偏心
がなく、アナモルフィックレンズには母線倒れがないレ
ンズ鏡体を提供するにある。The present invention has been made in view of the above circumstances,
The objective is to make the lens barrel easy to assemble, the spherical lens that constitutes the lens system with respect to the axis of the lens barrel does not have the eccentricity of the optical axis, and the anamorphic lens has a lens barrel that does not collapse on the generatrix. To provide.
前記目的を達成するために、本発明にかかるレンズ鏡体
は、アナモルフィックレンズを含むレンズ系における各
レンズをそれぞれのレンズ支持枠が備えたレンズ支持固
定位置調整部材にて支持固定した各レンズ支持枠を、各
レンズ支持枠固定用の固定部材とアナモルフィックレン
ズを支持固定したレンズ支持枠を回動せしめてアナモル
フィックレンズの母線倒れを調整する母線調整部材挿入
用孔とを備えた鏡筒内に所要の間隔を保って嵌挿し、ア
ナモルフィックレンズの母線倒れを調整してより各レン
ズ支持枠を固定部材にて固定してなることを特徴とする
ものである。In order to achieve the above-mentioned object, a lens body according to the present invention is a lens in which each lens in a lens system including an anamorphic lens is supported and fixed by a lens support fixing position adjusting member provided in each lens supporting frame. The supporting frame was provided with a fixing member for fixing each lens supporting frame and a busbar adjusting member insertion hole for rotating the lens supporting frame supporting and fixing the anamorphic lens to adjust the collapse of the anamorphic lens. It is characterized in that the lens supporting frames are fitted and inserted in the lens barrel with a required space therebetween, and the tilt of the anamorphic lens is adjusted to further fix each lens supporting frame with a fixing member.
レンズ系を構成する各レンズをそれぞれのレンズ支持枠
に支持固定せしめる際に、それぞれのレンズ支持枠に備
えられたレンズ支持固定位置調整部材により、球面レン
ズの光軸がレンズ支持枠の軸心に合致するように球面レ
ンズが調整され、アナモルフィックレンズの母線がレン
ズ支持枠の軸心と直交するようにアナモルフィックレン
ズが調整される。When supporting and fixing each lens that constitutes the lens system to each lens support frame, the optical axis of the spherical lens is aligned with the axis of the lens support frame by the lens support fixing position adjusting member provided in each lens support frame. The spherical lens is adjusted so as to match, and the anamorphic lens is adjusted so that the generatrix of the anamorphic lens is orthogonal to the axial center of the lens support frame.
以上のように、レンズを正確な状態にならしめて支持固
定した各レンズ支持枠を鏡筒内に嵌挿する際に、球面レ
ンズにあっては光軸は鏡筒の軸心に対して偏心すること
がないけれども、アナモルフィックレンズにあっては、
光軸に直交し、アナモルフィックレンズの長手方向に在
る母線が倒れ易いので、全レンズ支持枠を固定部材にて
固定するのに先立って、アナモルフィックレンズを支持
固定したレンズ支持枠を鏡筒の外側から操作する母線調
整部材にて軸心を中心として回動せしめることによっ
て、アナモルフィックレンズの母線倒れが調整される。As described above, the optical axis of the spherical lens is eccentric with respect to the axis of the lens barrel when the lens support frames in which the lenses are accurately aligned and supported and fixed are inserted into the lens barrel. Although there is no such thing, in the anamorphic lens,
Since the generatrix orthogonal to the optical axis and present in the longitudinal direction of the anamorphic lens is prone to fall, a lens support frame that supports and fixes the anamorphic lens is fixed before fixing all lens support frames with a fixing member. The tilt of the busbar of the anamorphic lens is adjusted by rotating the busbar adjusting member operated from the outside of the lens barrel about the axis.
以下、本発明にかかるレンズ鏡体の実施例を図面によっ
て詳細に説明する。Hereinafter, embodiments of the lens body according to the present invention will be described in detail with reference to the drawings.
本発明にかかるレンズ鏡体の縦断面図である第１図と、
左半分を縦断して示した同上レンズ鏡体の正面図である
第２図とにおいて、Ｘは本発明にかかるレンズ鏡体であ
って、該レンズ鏡体Ｘは、鏡筒10と、シリンドリカルレ
ンズを含むレンズ系を構成するレンズ21ないし26をそれ
ぞれ支持固定し、前記鏡筒10内に嵌挿せしめられるレン
ズ支持枠31ないし34とから主として構成されている。1 is a vertical cross-sectional view of a lens barrel according to the present invention,
2, which is a front view of the lens mirror body shown by vertically cutting the left half, X is a lens mirror body according to the present invention, and the lens mirror body X is a lens barrel 10 and a cylindrical lens. The lens support frames 31 to 34, which support and fix the lenses 21 to 26 constituting the lens system including the lens system, are mainly configured by the lens support frames 31 to 34 which are fitted and inserted into the lens barrel 10.
ところで、上記鏡筒10は、レンズ支持枠31,32,33を嵌挿
する大径筒部11とレンズ支持枠34を嵌挿する小径筒部12
とを縮径用段壁13を介して一体的に形成し、前記縮径用
段壁13はさらに内部に向けて延出せしめて、前記レンズ
支持枠33,34の位置決めに供せられる位置決め用面部14,
15を形成してなるものである。By the way, the lens barrel 10 has a large-diameter cylindrical portion 11 into which the lens supporting frames 31, 32, and 33 are fitted and a small-diameter cylindrical portion 12 into which the lens supporting frame 34 is fitted.
Are integrally formed via a step wall 13 for reducing the diameter, and the step wall 13 for reducing the diameter is further extended toward the inside so as to be used for positioning the lens support frames 33, 34. 14,
15 is formed.
また、前記鏡筒10の筒壁には、前記各レンズ支持枠31,3
2,33,34を固定する位置ごとに８個の固定部材としての
ボールねじ16（第３図参照）を螺入せしめるねじ孔17,1
7,……を貫通刻設し、さらにシリンドリカルレンズ22,2
4,25を支持固定した各レンズ支持枠32,33,34を鏡筒10内
において該鏡筒10の軸心を中心として回動調整する母線
調整部材としての母線調整ボルト18,18の挿入用に供せ
られる長孔19,19を開口せしめてある。Further, the lens support frame 31, 3 is provided on the tube wall of the lens barrel 10.
Screw holes 17,1 into which eight ball screws 16 (see FIG. 3) as fixing members are screwed in at respective positions for fixing 2,33,34
Engraving 7, ..., Cylindrical lens 22,2
For inserting the busbar adjusting bolts 18, 18 as busbar adjusting members for rotating and adjusting the lens supporting frames 32, 33, 34 supporting and fixing 4,25 in the lens barrel 10 about the axis of the lens barrel 10. The long holes 19 and 19 used for the are opened.
なお、前記ボールねじ16は、一部に平坦な面を有するボ
ール16′をねじの先端部に回動自在に取付けてなるもの
である。The ball screw 16 is formed by rotatably attaching a ball 16 'having a partly flat surface to the tip of the screw.
21,23,26は四角形の球面レンズであり、22,24,25は四角
形のシリンドリカルレンズであり、レンズ21ないし24は
同じ大きさであって、レンズ25,26はレンズ21ないし24
よりも小さく、前記レンズ21ないし26にてレンズ系が構
成されている。なお、レンズの形状は四角形に限定され
るものではなく、平行な２辺と向い合った円弧とからな
るものであってもよい。Reference numerals 21,23,26 are square spherical lenses, 22,24,25 are square cylindrical lenses, lenses 21 to 24 are the same size, and lenses 25 and 26 are lenses 21 to 24.
The lens system is composed of the lenses 21 to 26. The shape of the lens is not limited to a quadrangle, but may be one having two parallel sides and arcs facing each other.
上記レンズ支持枠31,32,33は、第４図ないし第６図にも
示したように、レンズ21,22と23,24を挿入支持する開口
部31′,32′,33′を設けたほぼ四角形の枠体の外側縁
に、前記鏡筒10の大径筒部11に内接する円弧状部を形成
してなるものであり、上記レンズ支持枠34は、第７図に
も示したように、レンズ25と26を挿入支持する開口部3
4′を設けたほぼ四角形の枠体の外側縁に、前記鏡筒10
の小径筒部12に内接する円弧状部を形成してなるもので
あって、各レンズ支持枠31,32,33,34を鏡筒10内に嵌挿
すると、各レンズ支持枠の軸心と鏡筒の軸心とが合致す
るようになっている。また、前記レンズを挿入支持する
開口部31′,32′,33′,34′の内側縁と挿入されるレン
ズ21,22と23,24、25と26の外側縁との間には、レンズ支
持枠の軸心に対する球面レンズの光軸の偏心調整とシリ
ンドリカルレンズの母線倒れ調整とに供せられる調整用
間隙ａ（第２図参照）を形成し、各開口部31′,32′,3
3′,34′の隅部には工作用の逃げｂが形成してある。The lens supporting frames 31, 32, 33 are provided with openings 31 ', 32', 33 'for inserting and supporting the lenses 21, 22 and 23, 24 as shown in FIGS. The outer peripheral edge of the substantially quadrangular frame body is formed with an arcuate portion that is inscribed in the large-diameter cylindrical portion 11 of the lens barrel 10. The lens support frame 34 is as shown in FIG. The opening 3 for inserting and supporting the lenses 25 and 26.
The lens barrel 10 is attached to the outer edge of the substantially rectangular frame body provided with 4 '.
Which is formed by forming an arcuate portion inscribed in the small-diameter tubular portion 12, and when each lens support frame 31, 32, 33, 34 is fitted into the lens barrel 10, and the axial center of each lens support frame It is designed to match the axis of the lens barrel. Further, between the inner edges of the openings 31 ', 32', 33 ', 34' for inserting and supporting the lenses and the outer edges of the inserted lenses 21, 22, 23, 24, 25 and 26, the lenses are An adjustment gap a (see FIG. 2) is formed for adjusting the eccentricity of the optical axis of the spherical lens with respect to the axis of the support frame and adjusting the generatrix of the cylindrical lens, and each opening 31 ', 32', 3 is formed.
Recesses b for machining are formed at the corners of 3'and 34 '.
また、前記レンズ支持枠31,32,33,34を構成する各辺部
材には、レンズの外側縁に当接して、レンズ支持枠の軸
心に球面レンズの光軸を合致せしめるとともにシリンド
リカルレンズの母線を直交せしめるレンズ支持固定位置
調整部材としてのプラスチック製調整ねじ35（第３図参
照）を螺入せしめるねじ孔36を２個ずつ貫通刻設し、さ
らにレンズ支持枠32,33,34の向い合った一組の辺部材に
は、前記母線調整ボルト18を取外し可能に装着せしめる
ねじ孔37が刻設してある。Further, each side member constituting the lens support frame 31, 32, 33, 34 is in contact with the outer edge of the lens to align the optical axis of the spherical lens with the axial center of the lens support frame and the cylindrical lens Two screw holes 36, into which a plastic adjusting screw 35 (see FIG. 3) as a lens support fixing position adjusting member for making the busbars orthogonal to each other, can be screwed, are formed by penetrating, and further facing the lens supporting frames 32, 33, 34. A screw hole 37 is engraved on the pair of side members so that the busbar adjusting bolt 18 can be detachably mounted.
さらに、前記各レンズ21,22と23,24,25と26をそれぞれ
のレンズ支持枠31,32,33,34のレンズ支持用開口部31′,
32′,33′,34′に挿入支持せしめるために、レンズ支持
枠31にはレンズ支持用開口部31′の各隅部の光線入口側
に凹設した凹陥部381にレンズ押え片21′を取付け、レ
ンズ支持枠32にはレンズ支持用開口部32′の向い合った
一組の開口縁部の光線入口側に沿ってレンズ押え片22′
を取付け、レンズ支持枠33にはレンズ支持用開口部33′
の向い合った一組の開口縁部の光線入口側に沿ってレン
ズ押え片24′を取付けるとともに、該開口縁部33′の光
線出口側に沿ってレンズ支持用段部391を形成し、レン
ズ支持枠34にはレンズ支持用開口部34′の向い合った一
組の開口縁部の光線入口側に沿ってレンズ支持用段部39
2を形成するとともに、レンズ支持用開口部34′の各隅
部の光線出口側に凹設した凹陥部382にレンズ押え片2
6′を取付けてある。Furthermore, the lenses 21, 22 and 23, 24, 25 and 26 are respectively provided with lens support openings 31, 32, 33, 34 for supporting the lenses 31 ',
32 ', 33', 34 'to allowed to insert supported on the lens support opening 31 in the lens supporting frame 31' a lens pressing piece 21 in the recess 38 1 that is recessed in light entrance side of each corner of the ' The lens pressing frame 22 'is attached to the lens supporting frame 32 along the light beam entrance side of the pair of opening edges facing the lens supporting opening 32'.
Mount the lens support frame 33 to the lens support opening 33 '.
'Is attached to, opening edge 33' lens hold pieces 24 along ray entrance side of the opening edge facing each other with a pair of lens supporting recessed portion 39 1 is formed along the light exit side of, The lens supporting frame 34 has a lens supporting step 39 along the ray entrance side of a pair of opening edges facing the lens supporting opening 34 '.
2 is formed, and at the same time, the lens pressing piece 2 is formed in the recessed portion 38 2 provided at the light exit side of each corner of the lens supporting opening 34 ′.
6'is attached.
次に、レンズ鏡体Ｘの組立てを説明する。Next, the assembly of the lens barrel X will be described.
先ず、レンズ支持枠31,32,33,34のレンズ支持用開口部3
1′,32′,33′,34′にレンズ21,22と23,24,25と26を挿
入し、第３図に示したように、ねじ孔36,……に螺入し
たプラスチック製調整ねじ35,……にてレンズを支持固
定せしめる際に、調整ねじ35,……の調整によって、球
面レンズ21,23,26はそれらの光軸がレンズ支持枠の軸心
に合致するように調整し、シリンドリカルレンズ22,24,
25はそれらの母線がレンズ支持枠の軸心に直交するよう
に調整して、レンズ21ないし26をそれぞれのレンズ支持
枠に正確な状態に支持固定せしめる。First, the lens support openings 31, 32, 33, 34 of the lens support frame 3
Lenses 21, 22 and 23, 24, 25 and 26 are inserted into 1 ', 32', 33 'and 34', and as shown in Fig. 3, plastic adjustment screwed into screw holes 36 ,. When the lens is supported and fixed with the screws 35, ..., the spherical lenses 21, 23, 26 are adjusted so that their optical axes match the axis of the lens support frame by adjusting the adjusting screws 35, .... Cylindrical lens 22,24,
25 is adjusted so that their generatrixes are orthogonal to the axis of the lens support frame, so that the lenses 21 to 26 can be supported and fixed to the respective lens support frames in an accurate state.
次いで、鏡筒10の大径筒部11内に、光線の入口側、すな
ちわ第１図において左側から、レンズ24を支持固定した
レンズ支持枠33と間隔環42とレンズ22と23を支持固定し
たレンズ支持枠32と間隔環41とレンズ21を支持固定した
レンズ支持枠31とを嵌挿し、大径筒部11の端面にレンズ
支持枠31のレンズ支持用開口部31′とほぼ同じ開口部5
1′を有する押え板51をビスねじ53,……にて固定する一
方、小径筒部12内に光線の出口側からレンズ25と26を支
持固定したレンズ支持枠34を嵌挿し、小径筒部12の端面
にレンズ支持枠34のレンズ支持用開口部34′とほぼ同じ
開口部52′を有する押え板52をビスねじ54,……にて固
定してレンズ鏡体Ｘの仮組立てを終了する。そして、仮
組立てに際して、各レンズ支持枠の軸心と鏡筒の軸心と
が合致するので、球面レンズを支持固定したレンズ支持
枠が鏡筒10内で回動するも球面レンズの光軸は鏡筒の軸
心に対して偏心しない。Next, in the large-diameter cylindrical portion 11 of the lens barrel 10, from the entrance side of the light beam, that is, from the left side in FIG. The lens support frame 32 that is supported and fixed, the spacing ring 41, and the lens support frame 31 that supports and fixes the lens 21 are fitted and inserted, and the lens support opening 31 ′ of the lens support frame 31 is almost the same as the end surface of the large-diameter cylindrical portion 11. Opening 5
The pressing plate 51 having 1'is fixed with the screw screws 53, ..., On the other hand, the lens support frame 34, which supports and fixes the lenses 25 and 26 from the exit side of the light beam, is fitted into the small-diameter cylindrical portion 12, and the small-diameter cylindrical portion is inserted. A holding plate 52 having an opening 52 'which is substantially the same as the lens supporting opening 34' of the lens supporting frame 34 is fixed to the end face 12 by means of screw screws 54, ... And the temporary assembly of the lens barrel X is completed. . Then, at the time of temporary assembly, since the axis of each lens support frame and the axis of the lens barrel match, the lens support frame supporting and fixing the spherical lens rotates within the lens barrel 10, but the optical axis of the spherical lens is Do not decenter with respect to the axis of the lens barrel.
なお、前記の仮組立てに当って、シリンドリカルレンズ
を支持固定したレンズ支持枠32,33,34を鏡筒10内に嵌挿
するときに、仮組立て後に行われるシリンドリカルレン
ズの母線倒れの調整に備えて、各レンズ支持枠32,33,34
に刻設したねじ孔を37,……を鏡筒10の筒壁に設けた長
孔19,……に合致せしめることが必要である。Incidentally, in the above-mentioned temporary assembly, when the lens support frames 32, 33, 34 supporting and fixing the cylindrical lens are fitted into the lens barrel 10, in preparation for the adjustment of the generatrix of the cylindrical lens performed after the temporary assembly. Each lens support frame 32, 33, 34
It is necessary to match the screw holes 37, ... Carved in the same with the long holes 19, ..
次に、レンズ鏡体の仮組立て後に行われるシリンドリカ
ルレンズの母線の調整方法の原理の一例を、第８図につ
いて説明するに、レーザ光線ＲをスクリーンＳに設けた
ピンホールＰを通してシリンドリカルレンズL1、L2に入
射させると、シリンドリカルレンズL1のシリンドリカル
面r1の反射光によってスクリーンＳに光の線l1が形成さ
れ、シリンドリカルレンズL2のシリンドリカル面r3の反
射光によってスクリーンＳに光の線l2が形成され、各シ
リンドリカルレンズの母線の倒れがないときには、前記
の光の線l1,l2がピンホールＰを通る垂直線l0と重なる
ので、シリンドリカルレンズの母線の倒れ調整は、スク
リーンＳに形成される各レンズL1,L2の光の線l1,l2を重
ね合わせることによって行われるのである。Next, an example of the principle of the method of adjusting the generatrix of the cylindrical lens performed after the temporary assembly of the lens mirror body will be described with reference to FIG. 8, in which the laser beam R passes through the pinhole P provided in the screen S and the cylindrical lens L 1 , L 2 , the light ray l 1 is formed on the screen S by the reflected light from the cylindrical surface r 1 of the cylindrical lens L 1 , and the light is reflected on the screen S by the reflected light from the cylindrical surface r 3 of the cylindrical lens L 2. When the line l 2 of the cylindrical lens is not formed and the generatrix of each cylindrical lens is not collapsed, the lines l 1 and l 2 of the light are overlapped with the vertical line l 0 passing through the pinhole P. Is performed by superimposing the light lines l 1 and l 2 of the lenses L 1 and L 2 formed on the screen S.
そこで、レンズ鏡体Ｘの仮組立て後、前述の母線調整方
法に従って、各シリンドリカルレンズの母線の倒れ具合
を、それぞれの反射光または透過光によってスクリーン
に形成される光の線によって確認し、次いで、第２図に
示したように、母線調整ボルト18,18,……を長孔19,19,
……から鏡筒10内に挿入し、その先端部を各レンズ支持
枠32,33,34に刻設したねじ孔37,37,……に螺着し、各母
線調整ボルト18,18,……にて各レンズ支持枠を鏡筒10の
軸心を中心として回動調整し、各レンズの反射光による
光の線を重ね合わしたのちに、全レンズ支持枠31,32,3
3,34をボールねじ16,16,……にて固定して、レンズ鏡体
Ｘの組立てを完了する。前述のシリンドリカルレンズに
代えてトロイダルレンズを用いても同様の作用効果を奏
する。Therefore, after the temporary assembly of the lens mirror body X, according to the above-mentioned generatrix adjusting method, the degree of inclination of the generatrix of each cylindrical lens is confirmed by the line of light formed on the screen by each reflected light or transmitted light, and then, As shown in FIG. 2, the busbar adjusting bolts 18, 18, ...
...... is inserted into the lens barrel 10 and its tip is screwed into the screw holes 37, 37, ... formed in the lens supporting frames 32, 33, 34, and the respective busbar adjusting bolts 18, 18, ... Adjust the rotation of each lens support frame with the axis of the lens barrel 10 as the center, superimpose the lines of light of the reflected light of each lens on each lens support frame 31, 32, 3
Fixing 3, 34 with ball screws 16, 16, ... completes the assembly of the lens body X. Even if a toroidal lens is used instead of the above-mentioned cylindrical lens, the same operational effect is obtained.
以上の説明によって明らかなように、本発明はアナモル
フィックレンズを含むレンズ系を鏡筒内に組立てるのに
先立って、レンズ系を構成する各レンズをそれぞれのレ
ンズ支持枠が備えたレンズ支持固定位置調整部材にて支
持固定せしめるものであるがゆえに、レンズを容易に正
確な状態にならしめてレンズ支持枠に支持固定すること
が可能となる。As is apparent from the above description, according to the present invention, prior to assembling a lens system including an anamorphic lens in a lens barrel, each lens constituting the lens system is provided with a lens supporting and fixing lens provided in each lens supporting frame. Since it is supported and fixed by the position adjusting member, it is possible to easily bring the lens into an accurate state and support and fix it on the lens support frame.
そして、本発明は各レンズをそれぞれ正確な状態になら
しめて支持固定した各レンズ支持枠を鏡筒内に嵌挿し、
アナモルフィックレンズを支持固定したレンズ支持枠を
鏡筒の外側から操作する母線調整部材にて鏡筒の軸心を
中心として回動せしめて母線倒れを調整したのち、全レ
ンズ支持枠を固定部材にて固定するものであるがゆえ
に、鏡筒の軸心に対して球面レンズには光軸の偏心がな
く、アナモルフィックレンズには母線倒れのないレンズ
鏡体の提供が可能となった。Then, the present invention fits and inserts each lens support frame in which each lens is leveled in an accurate state and supported and fixed in the lens barrel,
The lens support frame that supports and fixes the anamorphic lens is operated from the outside of the lens barrel by rotating the lens barrel around the shaft center of the lens barrel to adjust the tilt of the bus bar, and then fixing the entire lens support frame. Therefore, the spherical lens has no optical axis decentering with respect to the axial center of the lens barrel, and the anamorphic lens can provide a lens body in which the generatrix does not fall.
図面第１図ないし第８図は本発明にかかるレンズ鏡体の
実施例を示すものであって、第１図はレンズ鏡体の縦断
面図、第２図は左半分を第１図におけるII-II線に沿っ
て縦断して示したレンズ鏡体の正面図、第３図はボール
ねじと調整ねじとを主として示す要部の断面図、第４図
（イ）、第５図（イ）、第６図（イ）、第７図（イ）は
レンズ支持枠の一部分の正面図、第４図（ロ）、第５図
（ロ）、第６図（ロ）、第７図（ロ）はレンズ支持枠の
縦断面図、第８図はシリンドリカルレンズの母線の調整
方法の原理を示す図、第９図は従来のレンズ鏡体の縦断
面図、第10図は第９図に示す従来のレンズ鏡体の正面図
である。 X:レンズ鏡体 10:鏡筒 16:ボールねじ 19:長孔 21,23,26:球面レンズ 22,24,25:シリンドリカルレンズ 31,32,33,34:レンズ支持枠 35:プラスチック製調整ねじ1 to 8 show an embodiment of a lens body according to the present invention. FIG. 1 is a longitudinal sectional view of the lens body, and FIG. 2 is a left half of FIG. -A front view of the lens barrel sectioned along the line II, FIG. 3 is a cross-sectional view of essential parts mainly showing a ball screw and an adjusting screw, FIG. 4 (a), and FIG. 5 (a). , FIG. 6 (a) and FIG. 7 (a) are front views of a part of the lens support frame, FIG. 4 (b), FIG. 5 (b), FIG. 6 (b) and FIG. 7 (b). ) Is a vertical cross-sectional view of the lens support frame, FIG. 8 is a view showing the principle of the method of adjusting the generatrix of the cylindrical lens, FIG. 9 is a vertical cross-sectional view of a conventional lens barrel, and FIG. 10 is shown in FIG. It is a front view of the conventional lens mirror body. X: Lens body 10: Lens barrel 16: Ball screw 19: Long hole 21,23,26: Spherical lens 22,24,25: Cylindrical lens 31,32,33,34: Lens support frame 35: Plastic adjustment screw
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−200111（ＪＰ，Ａ) 実開 昭59−138027（ＪＰ，Ｕ) 実開 昭59−71305（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-3-200111 (JP, A) Actually open 59-138027 (JP, U) Actually open 59-71305 (JP, U)
Claims (1)
おける各レンズをそれぞれのレンズ支持枠が備えたレン
ズ支持固定位置調整部材にて支持固定した各レンズ支持
枠を、各レンズ支持枠固定用の固定部材とアナモルフィ
ックレンズを支持固定したレンズ支持枠を回動せしめて
アナモルフィックレンズの母線倒れを調整する母線調整
部材挿入用孔とを備えた鏡筒内に所要の間隔を保って嵌
挿し、アナモルフィックレンズの母線倒れを調整してよ
り各レンズ支持枠を固定部材にて固定してなることを特
徴とするレンズ鏡体。Claim: What is claimed is: 1. A lens support frame is fixed for fixing each lens in a lens system including an anamorphic lens by a lens support fixing position adjusting member provided in each lens support frame. The lens and the lens support frame that supports and fixes the member and the anamorphic lens are rotated and fitted into the lens barrel having a busbar adjusting member insertion hole for adjusting the tilting of the busbar of the anamorphic lens at a required interval. A lens mirror body, characterized in that each lens support frame is fixed by a fixing member by adjusting the tilt of the anamorphic lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7320790A JPH0774850B2 (en) | 1990-03-26 | 1990-03-26 | Lens body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7320790A JPH0774850B2 (en) | 1990-03-26 | 1990-03-26 | Lens body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03274514A JPH03274514A (en) | 1991-12-05 |
| JPH0774850B2 true JPH0774850B2 (en) | 1995-08-09 |
Family
ID=13511475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7320790A Expired - Fee Related JPH0774850B2 (en) | 1990-03-26 | 1990-03-26 | Lens body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0774850B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006072041A (en) * | 2004-09-02 | 2006-03-16 | Pentax Corp | Lens barrel having eccentricity adjusting mechanism |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010097178A (en) * | 2008-09-22 | 2010-04-30 | Mitsubishi Electric Corp | Light source unit and image display apparatus |
| JP6539456B2 (en) * | 2015-02-18 | 2019-07-03 | 株式会社ｎｉｔｔｏｈ | Lens barrel having a cylindrical lens circumferential angle adjustment device, and a cylindrical lens circumferential angle adjustment device |
| US11280978B2 (en) * | 2018-10-01 | 2022-03-22 | Corning Incorporated | Methods of aligning a cylindrical lens in a lens fixture and in an optical system |
| JPWO2020170619A1 (en) * | 2019-02-22 | 2021-12-23 | ソニーグループ株式会社 | Lens barrel and image pickup device |
-
1990
- 1990-03-26 JP JP7320790A patent/JPH0774850B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006072041A (en) * | 2004-09-02 | 2006-03-16 | Pentax Corp | Lens barrel having eccentricity adjusting mechanism |
| JP4571839B2 (en) * | 2004-09-02 | 2010-10-27 | Ｈｏｙａ株式会社 | Lens barrel having an eccentricity adjusting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03274514A (en) | 1991-12-05 |
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