JPH0522213B2 - - Google Patents
Info
- Publication number
- JPH0522213B2 JPH0522213B2 JP61081163A JP8116386A JPH0522213B2 JP H0522213 B2 JPH0522213 B2 JP H0522213B2 JP 61081163 A JP61081163 A JP 61081163A JP 8116386 A JP8116386 A JP 8116386A JP H0522213 B2 JPH0522213 B2 JP H0522213B2
- Authority
- JP
- Japan
- Prior art keywords
- support
- pair
- light
- optical axis
- light source
- 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 - Lifetime
Links
Landscapes
- Measurement Of Optical Distance (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
- Laser Beam Processing (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はLED、レーザビーム等を投光する装
置の光軸調整装置の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of an optical axis adjustment device for a device that projects light such as an LED or a laser beam.
第２図は光を利用する変位計の変位測定の原理
を示す構成図で、光源１から放射された光は投光
レンズ２を経て被測定物３上に照射される。そこ
で反射散乱した光の一部を結像レンズ４を通して
ポジシヨンセンサ５上に投影して、反射点の像６
を作る。被測定物３が３ａに移動すると、それに
応じて上記反射点の像６も６ａに移動する。ポジ
シヨンセンサ５は、シリコン基板の表面に均一な
抵抗層が形成されているホトダイオードで、抵抗
層の表面に信号取出し用の１対の電極Ａ、及び電
極Ｂが設けられており、光が入射するとその入射
光のエネルギーに比例する電流が、入射点の位置
に応じて上記電極Ａ，Ｂより電流i1，i2に分かれ
て出力するように構成されている。従つて上記反
射点の移動に応じて変化するi1，i2を、電流電圧
変換器７によつて電圧V1，V2に変換し、これを
演算器８，９，１０に入力せしめて演算を行ない
被測定物３の変位１１を求めるのである。
FIG. 2 is a block diagram showing the principle of displacement measurement using a displacement meter that uses light. Light emitted from a light source 1 passes through a light projecting lens 2 and is irradiated onto an object 3 to be measured. A part of the reflected and scattered light is projected onto the position sensor 5 through the imaging lens 4, and an image 6 of the reflection point is projected.
make. When the object to be measured 3 moves to 3a, the image 6 of the reflection point also moves to 6a accordingly. The position sensor 5 is a photodiode in which a uniform resistance layer is formed on the surface of a silicon substrate, and a pair of electrodes A and B for signal extraction are provided on the surface of the resistance layer. Then, a current proportional to the energy of the incident light is divided into currents i 1 and i 2 and output from the electrodes A and B depending on the position of the incident point. Therefore, i 1 and i 2 , which change according to the movement of the reflection point, are converted into voltages V 1 and V 2 by the current-voltage converter 7, and these are input to the calculators 8, 9, and 10. The calculation is performed to obtain the displacement 11 of the object to be measured 3.
第３図はレーザビームを利用する変位計の投光
及び受光部の斜視図である。図中３は被測定物、
２０は投光ブロツク、２１はレーザビーム、２２
は受光レンズ、２３は反射ミラー、２４は光位置
検出器である。図において投光レンズを擁する投
光ブロツクを経て被測定物３に投射されたレーザ
ビーム２１は被測定物３の表面で反射散乱し、そ
の反射ビームの一部は受光レンズ２２を経て反射
ミラー２３で反射し光位置検出器２４に入射す
る。 FIG. 3 is a perspective view of a light emitting and light receiving section of a displacement meter that uses a laser beam. 3 in the figure is the object to be measured,
20 is a light projection block, 21 is a laser beam, 22
23 is a light receiving lens, 23 is a reflecting mirror, and 24 is an optical position detector. In the figure, a laser beam 21 projected onto an object to be measured 3 through a projection block having a projection lens is reflected and scattered on the surface of the object to be measured 3, and a part of the reflected beam passes through a reception lens 22 and is sent to a reflection mirror 23. , and enters the optical position detector 24 .
ところで上記レーザビームを利用する変位計に
おいて、測定変位量が50mm程度のものでは、投光
ブロツクの光軸を調整するための機構を備えてい
ないのが通常である。しかし、測定変位量が50mm
を越える場合、光軸のズレが測定精度に影響を与
え無視できなくなる。
By the way, in the displacement meters that utilize the laser beam described above, those with a measured displacement amount of about 50 mm are usually not equipped with a mechanism for adjusting the optical axis of the light projection block. However, the measured displacement is 50mm
If it exceeds , the deviation of the optical axis will affect the measurement accuracy and cannot be ignored.
本発明は、従来装置の上記問題点を解決するた
めになされたもので、軽量簡易で調整容易な光軸
調整装置を提供しようとするものである。 The present invention has been made in order to solve the above-mentioned problems of conventional devices, and it is an object of the present invention to provide an optical axis adjustment device that is lightweight, simple, and easy to adjust.
光を利用する変位計の投光ブロツクを、
光源および投光レンズを内部に擁する光源支持
体と、
該支持体の外面に、その中心軸が上記投光レン
ズの中心を通るように固着された１体の支持ピン
を介して、支持体を支持ピンの周りに回転自在に
保持する支持枠と、
該支持枠の外面に、上記支持ピンと同一平面上
に直交して固着された１対の支持軸を介して、支
持枠を支持軸の周りに回転自在に保持する外枠
と、
該外枠の壁面を貫通し、支持体を挟んで対称的
に配設された１対のねじとばね付ねじとからなる
２対の支持体押圧機構を、同一平面上に直交して
配設してなる調整機構と、
より構成した。
A light projecting block of a displacement meter that uses light is fixed to a light source support body having a light source and a light projecting lens therein, and to the outer surface of the support body so that its central axis passes through the center of the light projecting lens. A support frame that rotatably holds a support body around the support pin via one support pin, and a pair of supports fixed to the outer surface of the support frame so as to be orthogonal to each other on the same plane as the support pin. An outer frame that rotatably holds the support frame around the support shaft via the shaft, and a pair of screws and springs that penetrate the wall surface of the outer frame and are arranged symmetrically with the support body in between. The present invention is composed of two pairs of support pressing mechanisms consisting of screws and an adjustment mechanism disposed perpendicularly on the same plane.
投光ブロツクを上記のように構成したので、上
記調整機構のねじを回転させて支持体を押圧し、
支持体を前記支持ピン又は支持軸の周りに回転さ
せることにより、ビームの光軸を調整することが
できる。
Since the light emitting block is configured as above, rotate the screw of the adjustment mechanism to press the support.
By rotating the support body around the support pin or support shaft, the optical axis of the beam can be adjusted.
第１図は本発明の一実施例を示す光軸調整装置
の斜視図で、３０は投光ブロツク、３１は光源支
持体、３２は支持ピン、３３は支持枠、３４は支
持軸、３５は外枠、３６はねじ、３７はばね付ね
じである。
FIG. 1 is a perspective view of an optical axis adjustment device showing an embodiment of the present invention, in which 30 is a light projection block, 31 is a light source support, 32 is a support pin, 33 is a support frame, 34 is a support shaft, and 35 is a In the outer frame, 36 is a screw, and 37 is a spring-loaded screw.
図に示すように、投光ブロツク３０は、光源お
よび投光レンズ（何れも図示せず）を内部に収め
た支持体３１と、支持枠３３と外枠３５とから構
成されている。支持体３１の外面に、支持体中心
軸（レンズ光軸でもある）を中心に対称的に固着
された１対の支持ピン３２は、四辺形の支持枠３
３の相対する辺の中心位置に保持され、支持ピン
３２の軸を中心に支持体３１が回転しうるように
構成されている。又支持枠３３の支持ピン３２を
軸着した辺と直交する２辺の中心に固着された１
対の支持軸３４は、外枠３５により支持枠３３が
支持軸３４を軸として回転しうるように保持され
ている。この結果支持体３１は支持ピン３２及び
支持軸３４を軸に夫々直角方向に回転することが
できる。 As shown in the figure, the light projecting block 30 is composed of a support 31 housing a light source and a light projecting lens (none of which are shown), a support frame 33, and an outer frame 35. A pair of support pins 32 fixed to the outer surface of the support 31 symmetrically around the support center axis (also the lens optical axis) are attached to the quadrilateral support frame 3.
The support body 31 is held at the center position of the opposing sides of the support pin 32, and is configured to be able to rotate around the axis of the support pin 32. In addition, 1 fixed at the center of two sides perpendicular to the side on which the support pin 32 of the support frame 33 is pivoted.
The pair of support shafts 34 are held by an outer frame 35 so that the support frame 33 can rotate around the support shafts 34 . As a result, the support body 31 can rotate in a right angle direction about the support pin 32 and the support shaft 34, respectively.
次に外枠３５の壁面下方に、支持体３１を挟ん
で支持体の中心対称にねじ３６とばね付ねじ３７
よりなる２対の押圧機構を、同一平面上に直交さ
せて配設し、光軸調整機構を構成している。ばね
付ねじ３７はねじと併せて内部にコイルねじを内
蔵しているので、回転により前後に移動するとと
もに圧力をうけてばね力が作用する。 Next, under the wall surface of the outer frame 35, a screw 36 and a spring-loaded screw 37 are placed symmetrically to the center of the support body with the support body 31 in between.
Two pairs of pressing mechanisms are arranged orthogonally on the same plane to constitute an optical axis adjustment mechanism. Since the spring-loaded screw 37 has a coil screw built-in therein together with the screw, it moves back and forth as it rotates and receives pressure to exert a spring force.
本発明に係る光軸調整装置は上記のように構成
されているので、ねじ３６を回転させて支持体３
１の外面を押圧することにより、支持体３１は傾
き光軸の調整ができるのである。ねじのピツチや
ばね付ねじのばね力を適宜調整することにより、
上記光軸の微調整が可能となる。 Since the optical axis adjustment device according to the present invention is configured as described above, the support body 3 can be adjusted by rotating the screw 36.
By pressing the outer surface of the support 31, the tilt and optical axis of the support 31 can be adjusted. By appropriately adjusting the pitch of the screws and the spring force of the spring-loaded screws,
Fine adjustment of the optical axis becomes possible.
なお上記実施例においては支持枠３３や外枠３
５は四角形であるが円筒形にしてもよい。又上記
実施例は光による変位計の投光ブロツクに利用し
た例であるが、変位計に限らずビームを放射する
機器に広く利用できる。 Note that in the above embodiment, the support frame 33 and the outer frame 3
5 is square, but may be cylindrical. Further, although the above embodiment is an example in which light is used as a light projection block for a displacement meter, the present invention can be widely used not only for displacement meters but also for a wide variety of devices that emit beams.
本発明はLED、レーザビームなどの投光装置
の光軸調整装置を、光源および投光レンズを擁す
る光源支持体と、光源支持体を支持ピンで保持す
る支持枠と、該支持枠を支持軸で保持する外枠
と、外枠壁面に装着された２対のねじとばね付ね
じからなる調整機構とから構成したので、次に述
べるような優れた効果をあげることができた。(1)
光軸調整を円滑かつ高精度に行うことができ
る。
The present invention provides an optical axis adjustment device for a light projecting device such as an LED or a laser beam, which includes: a light source support that includes a light source and a light projecting lens; a support frame that holds the light source support with a support pin; and a support shaft that supports the support frame. Since it is composed of an outer frame that is held by the outer frame and an adjustment mechanism consisting of two pairs of screws and a spring-loaded screw attached to the wall of the outer frame, the following excellent effects can be achieved. (1)
Optical axis adjustment can be performed smoothly and with high precision.
(2) 光軸調整装置をコンパクトかつ簡便に製作す
ることができる。(2) The optical axis adjustment device can be manufactured compactly and easily.
第１図は本発明の一実施例を示す光軸調整装置
の斜視図、第２図は変位計の原理を示す説明図、
第３図は変位計の斜視図である。
図中３０は投光ブロツク、３１は光源支持体、
３２は支持ピン、３３は支持枠、３４は支持軸、
３５は外枠、３６はねじ、３７はばね付ねじであ
る。なお、図中同一符号は同一又は相当部分を示
すものとする。
FIG. 1 is a perspective view of an optical axis adjustment device showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the principle of a displacement meter,
FIG. 3 is a perspective view of the displacement meter. In the figure, 30 is a light projection block, 31 is a light source support,
32 is a support pin, 33 is a support frame, 34 is a support shaft,
35 is an outer frame, 36 is a screw, and 37 is a spring-loaded screw. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
持体と、 上記投光レンズを挟んで該支持体の外面に、そ
の中心軸が上記投光レンズの中心を通るようにし
て１対の支持ピンを固着し、該１対の支持ピンを
介して、上記支持体を支持ピンの周りに回転自在
に保持する支持枠と、 該支持枠の外面に、上記１対の支持ピンと同一
平面上に、支持ピンに直交して１対の支持軸を固
着し、該１対の支持軸を介して、支持枠を支持軸
の周りに回転自在に保持する外枠と、 該外枠の壁面を貫通し、上記支持体を挟んで対
称的に配設されたねじとばね付ねじとからなる２
対の支持体押圧機構を同一平面上に直交して配設
してなる調整機構と、 よりなり、上記支持体押圧機構のねじを回転して
上記支持体を支持ピン及び支持軸の周りに回転さ
せることにより、投光レンズのビームの光軸調整
をなしうるように構成したことを特徴とするビー
ム光軸調整装置。[Scope of Claims] 1. A light source support body containing a light source and a light projection lens therein, and a light source support body with the light projection lens sandwiched therebetween, the support having a center axis passing through the center of the light projection lens. a support frame to which a pair of support pins are fixed, and to rotatably hold the support body around the support pins via the pair of support pins; A pair of support shafts are fixed on the same plane so as to be orthogonal to the support pins, and a support frame is rotatably held around the support shafts via the pair of support shafts; 2 consisting of screws penetrating the wall surface and arranged symmetrically with the support body in between and a spring-loaded screw.
an adjustment mechanism in which a pair of support pressing mechanisms are arranged orthogonally on the same plane, and the screw of the support pressing mechanism is rotated to rotate the support around the support pin and the support shaft. 1. A beam optical axis adjusting device characterized in that the optical axis of a beam of a projection lens can be adjusted by adjusting the beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61081163A JPS62238089A (en) | 1986-04-10 | 1986-04-10 | Device for adjusting optical axis of beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61081163A JPS62238089A (en) | 1986-04-10 | 1986-04-10 | Device for adjusting optical axis of beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62238089A JPS62238089A (en) | 1987-10-19 |
| JPH0522213B2 true JPH0522213B2 (en) | 1993-03-26 |
Family
ID=13738786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61081163A Granted JPS62238089A (en) | 1986-04-10 | 1986-04-10 | Device for adjusting optical axis of beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62238089A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03294807A (en) * | 1990-04-12 | 1991-12-26 | Fujitsu Ltd | Light beam shaping lens unit |
| JP4404113B2 (en) | 2007-08-06 | 2010-01-27 | セイコーエプソン株式会社 | Compensation element adjustment mechanism and projector |
| JP5811127B2 (en) * | 2013-03-29 | 2015-11-11 | ブラザー工業株式会社 | Laser processing equipment |
| CN105137561B (en) * | 2015-09-28 | 2017-12-01 | 河南平原光电有限公司 | A kind of adjustment mechanism based on plate glass optical axis correction system |
-
1986
- 1986-04-10 JP JP61081163A patent/JPS62238089A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62238089A (en) | 1987-10-19 |
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