JPH0224445A - Construction method of building stair and bearing column moving device - Google Patents
Construction method of building stair and bearing column moving deviceInfo
- Publication number
- JPH0224445A JPH0224445A JP63174461A JP17446188A JPH0224445A JP H0224445 A JPH0224445 A JP H0224445A JP 63174461 A JP63174461 A JP 63174461A JP 17446188 A JP17446188 A JP 17446188A JP H0224445 A JPH0224445 A JP H0224445A
- Authority
- JP
- Japan
- Prior art keywords
- support column
- column
- stairs
- support
- columns
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract 1
- 238000010792 warming Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Landscapes
- Steps, Ramps, And Handrails (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、建造物の階段を逐次構築することを目的と
した建造物用階段の構築方法及び装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method and apparatus for constructing stairs for a building, the purpose of which is to sequentially construct stairs for a building.
（従来の技術）
従来、建造物に先行して階段を構築する方法としては、
二本の支柱を階段構築場所へ所定間隔で直立設置し、こ
の支柱間へ枠梁を」−下所定間隔で介装設置すると共に
、夫々の支柱へ階段の上端部又は下端部を支える支承梁
の中央部を夫々水平に設置した後、前記各枠梁と二本の
支柱間及び支承梁間に引張力を付与して成形すると共に
、各支承梁の両端部と床上面又は支承梁相互間の距離を
調整し、全支持材の外形を正常に矯正することが提案さ
れていた（特公昭５８−３６１４２号）。まｆ、階段部
材その他の材料は、総てクレーンを利用して吊り上げて
いた。(Conventional technology) Conventionally, the method of constructing stairs prior to a building is as follows:
Two pillars are installed upright at the stair construction site at a predetermined interval, frame beams are installed between the pillars at a predetermined interval, and support beams are attached to each pillar to support the top or bottom of the stairs. After horizontally installing the central part of each frame beam, apply tension between each frame beam and the two pillars and between the support beams to form them, and also form the sections between both ends of each support beam and the top of the floor or between the support beams. It was proposed to correct the external shape of all supporting members by adjusting the distance (Japanese Patent Publication No. 58-36142). All of the stair components and other materials were lifted using a crane.
（発明により解決すべき課′１ｆｉ）
前記従来の構築方法においては、建造物と直結した作業
を要請されない反面、自立の為の多くの部材点数を必要
とすると共に、高層乃至超高層の建造物の１右段の場合
には、階段構築用支持材の組立が高層乃至超高層になり
、多大の資材、労力を必要とするので、事実上高層乃至
超高層では採用し得ない問題点があった。(Problem to be solved by the invention '1fi) In the conventional construction method, although work directly connected to the building is not required, it requires a large number of parts for self-supporting, and it is difficult to construct high-rise or ultra-high-rise buildings. In the case of (1) on the right, the assembling of support materials for staircase construction is required for high-rise or very high-rise buildings, and requires a large amount of materials and labor, so there is a problem that it cannot be used in fact for high-rise or very high-rise buildings. Ta.
また前記における階段構築用支持材及び階段部材は何れ
も大型クレーンを用いて吊り上げているが、クレーンの
ない場合には、前記工法を採用し得ない問題点があった
。また建造物と同時構築の従来工法では、現場作業にお
いて、上階建造の足場を仮設しなければならないとか、
階段と床との同時構築による精度の要請又は特殊技術の
必要性など幾多の問題点があった。そこで出願人は先に
前記問題点を解決すべき提案をしたかく特願昭６３−１
１１９７８号）、今だ支持柱の移動を動力化できない問
題点があった。Furthermore, although both the stair construction supporting material and the stair member mentioned above are lifted using a large crane, there is a problem in that the above construction method cannot be adopted in the absence of a crane. In addition, with the conventional method of constructing the building at the same time, scaffolding for the upper floors must be temporarily erected during on-site work.
There were many problems, such as the need for precision due to the simultaneous construction of the stairs and floor, and the need for special technology. Therefore, the applicant first made a proposal to solve the above problem.
No. 11978), there was still a problem that the movement of the support columns could not be motorized.
（課題を解決する為の手段）
然るにこの発明は、既設の階段支持柱又は案内柱を利用
して、支持柱又は案内柱を逐次移動できるようにして前
記従来の問題点を悉く解決したのである。(Means for Solving the Problems) However, the present invention solves all of the above-mentioned conventional problems by using existing stair support columns or guide columns and making it possible to move the support columns or guide columns one after another. .
即ちこの発明は、１昔段消築位置へ支持柱を所定間隔で
立設し、前記支持柱は既設床及び既設階段に固定すると
共に、少なくと６−階分の１右段部材を前記支持柱に沿
って前記既設階段に連設した後、当該新設階段に対応し
て床を構築し、ついで前記支持柱と階段との拘束を解い
て、前記支持柱を少なくとも一階段分の長さだけ上方へ
移動させた後、前記新階段と支持柱とを固定する。つい
で前記作業を繰り返すことにより逐次１智段を構築する
ようにした建造物用階段の構築方法である。また、支持
柱の移動は、案内柱に装着した搬送装置を用いたもの
ｔ、な支持柱を利用して案内柱を移動したものである。That is, in this invention, support columns are erected at predetermined intervals at the position where the first step has been removed, the support columns are fixed to the existing floor and the existing stairs, and at least one right step member corresponding to 6 stories is fixed to the support column. After connecting the pillars to the existing stairs, construct a floor corresponding to the new stairs, and then release the restraint between the support pillars and the stairs, and extend the support pillars by at least the length of one staircase. After moving upward, the new staircase and support column are fixed. This is a method of constructing stairs for a building, in which one step is successively constructed by repeating the above operations. In addition, the movement of the support column is carried out using a transport device attached to the guide column.
The guide column was moved using the support column.
更に、支持柱の移動は、支持柱に設けたラックに、駆動
機のピニオンを咬み合せる装置としたものである。Furthermore, the support column is moved by a device that engages the pinion of the drive machine with a rack provided on the support column.
次にこの発明の装置は、支持柱の一側にラックを設け、
該ラックに動力と連動するピニオンを咬み合せた支持柱
の移動装置である。また他の装置は、支持柱にラック付
の案内柱を並列設置し、前記支持柱と案内柱とに共通の
移動枠を装着し、該移動枠の一側には支持柱との固定装
置を設置すると共に、他側に案内柱に設けたラックと咬
み合うピニオンを架設し、該ピニオンに駆動装置を連結
した支持柱の移動装置である。前記支持柱は二本又は三
本としたものである。Next, the device of the present invention includes a rack provided on one side of the support column,
This is a support column moving device in which a pinion that is interlocked with the rack is engaged with the rack. In another device, a guide column with a rack is installed in parallel with a support column, a common movable frame is attached to the support column and the guide column, and a fixing device for fixing the support column to one side of the movable frame is installed. This device is a moving device for a support column in which a pinion is installed on the other side of the guide column and engages with a rack provided on a guide column, and a drive device is connected to the pinion. The supporting columns may be two or three.
前記のように支持柱は動力によって逐次移動する。その
際、駆動装置を自動的に持ち上げ、これに伴って支持柱
を移動する場合（案内柱必要）と、駆動装置を人力で運
ぶ場合とがあり、前者は案内柱も支持柱を利用して移動
するが、駆動装置は自動的に移動し、後者は駆動装置（
モータ及びピニオンなどンを人力で移動しなければなら
ないが、現場の状況に応じて適宜選択する。As mentioned above, the support columns are sequentially moved by power. At that time, there are cases in which the drive device is automatically lifted and the support column is moved accordingly (a guide column is required), and there are cases in which the drive device is carried manually.In the former case, the guide column also uses the support column. move, but the drive moves automatically, and the latter moves by the drive (
The motor, pinion, etc. must be moved manually, but these should be selected appropriately depending on the site situation.
（作 用）
即ちこの発明によれば、支持柱を逐次自動的に移動する
ので、支持柱は充分の強度を保たれて比較的大きな重量
の構成材を使用しても作業上困難を生ずるおそれなく、
構築作業を円滑に進行させることができる。(Function) That is, according to the present invention, since the support columns are automatically moved one after another, the support columns can maintain sufficient strength and there is no risk of difficulty in working even when using relatively large weight components. Without,
Construction work can proceed smoothly.
また移動装置にラックとピニオンを主要部として用いた
ために、安全性及び移動精度共に信顆性が高い。Furthermore, since the moving device uses a rack and pinion as the main parts, both safety and movement accuracy are highly reliable.
（実施例１）
次にこの発明を第１図乃至第４図に示す実施例に基づい
て説明する。(Embodiment 1) Next, the present invention will be explained based on the embodiment shown in FIGS. 1 to 4.
支持柱１．２ａ、２ｂを階段が内設できる間隔に立設す
る。前記支持柱１は、少くとも二つの床４ａ、４ｂに夫
々固着した床横材５ａ、５ｂを固定し、床横材５ａ、５
ｂには階段部材３ａ、３ｂの原調を固着する。前記支持
柱２ａ、２ｂには、前記階段部材３ａ、３ｂと連結した
踊り温部材６ａ、６ｂ、６Ｃの壁横杆７ａとの固着し、
踊り温部材６ｂは床上から立設しな支杆８により支持す
る。次に床４ａ上と、踊り場６ａ上へ駆ｒＪＪＪａ９ａ
、９ｂ、９Ｃを設置して各ＩＷ駆動機ａ、９ｂ、９Ｃの
ピニオン１０と各支持柱１．２ａ、２ｂのラック１１と
を咬み合せる（第１図及び第３図々示）。Support columns 1.2a and 2b are erected at intervals that allow stairs to be installed inside. The support column 1 fixes floor cross members 5a, 5b fixed to at least two floors 4a, 4b, respectively, and supports the floor cross members 5a, 5.
The original tone of the stair members 3a and 3b is fixed to b. The supporting pillars 2a, 2b are fixed to the wall horizontal rods 7a of the dance warming members 6a, 6b, 6C connected to the stairway members 3a, 3b,
The dancing heating member 6b is supported by a support rod 8 which is erected from the floor. Next, drive onto the floor 4a and onto the landing 6a rJJJa9a
, 9b, 9C are installed, and the pinions 10 of each IW drive machine a, 9b, 9C are engaged with the rack 11 of each support column 1.2a, 2b (as shown in FIGS. 1 and 3).
次に支持柱１．２ａ、２ｂと、前記各部の固定を解除す
る。そこで前記駆動機９ａ、９ｂ、９Ｃを始動し、同速
回転させると、支持柱１．２ａ、２ｂは第１図中矢示１
２．１３のように所定の速度で上昇する。そこで支持柱
か第１図中鎖線図示の位置まで上昇したならば、支持柱
１と床４ａ、４ｂの床横材５ａ、５ｂとを固着すると共
に、支持柱２ａ、２ｂと踊り場６ａ、６ｂとを固着する
。Next, the fixation of the support columns 1.2a, 2b and each of the above-mentioned parts is released. Then, when the driving machines 9a, 9b, and 9C are started and rotated at the same speed, the support columns 1.2a and 2b are moved at the arrow 1 in FIG.
2.13, it rises at a predetermined speed. Once the support column has risen to the position shown by the chain line in FIG. to fix.
ついで支持柱１．２ａ、２ｂの上端を連結した梁材１４
ａ、１４ｂの連結材１５に設けた滑車１６を利用してワ
イヤ１７を吊り下げ、ワイヤ１７の下端を階段部材３ｄ
、３ｅに連結し、ワイヤ１７を矢示１８のように吊り上
げて、当該階段部材を３ｂ、３ｃ上の位置より、３ｄ、
３ｅの位置まで矢示１９のように引上げる。このように
した後、床４ｃを構築し、踊り場６ｃを仮支持しななら
ば、前記支持杆１．２ａ、２ｂと、床横材５ａ、５ｂと
の固着をとくと共に、踊り場６ａと支持柱２ａ、２ｂと
の固着をとき、ついで床４ｂおよび踊り場６ｂ上へ移し
た駆動１１９ａ、９ｂ、９ｃを移し、これを始動して支
持柱を上昇させる。前記操作の繰り返しにより、必要高
さまでの階段を逐次構築することができる。前記におい
て、支持柱を逐次上昇させる為に、一定長さがあれば充
分であり、使用資材を少くすることができる。Next, a beam member 14 connecting the upper ends of the support columns 1.2a and 2b
The wire 17 is suspended using the pulley 16 provided on the connecting member 15 of a and 14b, and the lower end of the wire 17 is attached to the staircase member 3d.
, 3e, and lift the wire 17 as shown by the arrow 18 to move the staircase member from the position above 3b, 3c to 3d, 3e.
Pull up as shown by arrow 19 to position 3e. After doing this, if the floor 4c is constructed and the landing 6c is not temporarily supported, the support rods 1.2a, 2b and the floor cross members 5a, 5b are unfixed, and the landing 6a and the support rod are removed. 2a, 2b, and then move the drives 119a, 9b, 9c onto the floor 4b and landing 6b, start them, and raise the support column. By repeating the above operations, it is possible to successively construct stairs up to the required height. In the above, in order to raise the support columns one after another, a certain length is sufficient, and the amount of materials used can be reduced.
また前記における駆動機は何れも階段を利用して人力移
動することができる。Further, all of the above-mentioned driving machines can be moved manually using stairs.
（実施例２）
次にこの発明の他の実施例を第５図乃至第７図に基づい
て説明する。(Embodiment 2) Next, another embodiment of the present invention will be described based on FIGS. 5 to 7.
この実施例は、前記実施例１の支持柱に対し、支持柱と
案内柱を並設し、駆動機は案内柱に沿って支持柱と共に
自動的に移動するようにしたものである。従って移動枠
と支持柱とを掛止し、かつ支持柱を固定してピニオンを
回転すると、案内柱が上昇し、案内柱を固定してピニオ
ンを回転すると、支持柱と駆動装置とが一体的に移動す
ることになる。In this embodiment, a support column and a guide column are arranged side by side with respect to the support column of the first embodiment, and the drive machine is configured to automatically move together with the support column along the guide column. Therefore, when the moving frame and the support column are hooked together, and the support column is fixed and the pinion is rotated, the guide column rises, and when the guide column is fixed and the pinion is rotated, the support column and the drive device are integrated. will be moved to.
支持柱１．２を階段が内股できる間隔に立設する。前記
支持柱１は、三つの床４ａ、４ｂ、４Ｃに夫々固着した
床横材５ａ、５ｂ、５Ｃを固定し、床横材５ａ、５ｂ、
５Ｃには階段部材３ａ、３ｂ、３Ｃ５３ｄ、３ｅの原調
を固着する。前記支持柱２には、前記階段部材３ａ、３
ｂ、３Ｃ１３ｄ、３ｅと連結した踊り温部材６ａ、６ｂ
の壁横杆７ａ、７ｂ、７ｃと固着し、踊り温部材６Ｃを
支杆８で支持する。前記支持柱１．２には案内柱２０．
２１が並列設置され、支持柱１．２と案内柱２０．２１
には移動枠２２ａ、２２ｂが嵌装され、移動枠２２ａ、
２２ｂと支持柱１．２とは取付ボルト２３ａ、２３ｂに
より固定されている。一方、移動枠２２ａ、２２ｂと案
内柱２０．２１とは案内ローラ２４ａ、２４ｂと、ピニ
オン２５とによって移動可能に装着されている。従って
支持柱１．２と、ラック２８を介し、移動枠２２ａ、２
２ｂを固定したままピニオン２５を回転すると、支持柱
１．２はピニオン２５の回転につれ、移動枠２２ａ、２
２・ｂと共に、第５図中矢示２６のように上昇する。ま
た支持柱１．２をささら桁に固定し、案内柱２０．２１
を自由状態にして、ピニオン２５を回転させると、案内
柱２０．２１を第６図中矢示２７のように上昇させるこ
とができる。このように支持柱１．２及び案内柱２０．
２１を交互に持ち上げることにより、既設階段上の上方
へ、次位の階段を新設することができる。図中２９はブ
レーキ、３０は接続部である。Support columns 1.2 are erected at intervals that allow the stairs to cross. The support column 1 fixes floor cross members 5a, 5b, 5C fixed to three floors 4a, 4b, 4C, respectively, and supports floor cross members 5a, 5b,
The originals of the stair members 3a, 3b, 3C53d, and 3e are fixed to 5C. The support pillar 2 includes the stair members 3a, 3.
b, 3C13d, dance warming member 6a, 6b connected to 3e
It is fixed to the wall horizontal rods 7a, 7b, and 7c, and the dance warming member 6C is supported by the support rods 8. The support column 1.2 has a guide column 20.
21 are installed in parallel, supporting column 1.2 and guide column 20.21
The moving frames 22a, 22b are fitted into the moving frames 22a, 22b.
22b and the support column 1.2 are fixed with mounting bolts 23a, 23b. On the other hand, the moving frames 22a, 22b and the guide columns 20.21 are movably mounted by guide rollers 24a, 24b and a pinion 25. Therefore, via the support column 1.2 and the rack 28, the movable frames 22a, 2
When the pinion 25 is rotated while the pinion 2b is fixed, the support column 1.2 moves as the pinion 25 rotates.
2.b, it rises as shown by arrow 26 in FIG. In addition, the support column 1.2 is fixed to the stringer, and the guide column 20.21
When the pinion 25 is rotated with the guide column 20.21 in a free state, the guide column 20.21 can be raised as indicated by the arrow 27 in FIG. In this way, the support column 1.2 and the guide column 20.
21 alternately, it is possible to construct a new staircase above the existing staircase. In the figure, 29 is a brake, and 30 is a connection part.
前記実施例によれば、階段構築上使用する資材の最も重
量の大きい部材について、動力を使用して持ち上げる結
果、作業者を重労働から解放するとともに、作業を円滑
化することができる。According to the embodiment, as a result of using power to lift the heaviest member of the materials used in constructing the stairs, it is possible to relieve the worker from heavy labor and to facilitate the work.
（発明の効果）
この発明によれば、支持柱又は支持柱と案内柱を動力に
よって持ち上げるので、作業を合理化して能率を向上す
ると共に、作業の安全性を増強するなどの諸効果がある
。またこの発明の装置によれば、ラックとビニオンによ
って支持柱などを上昇させる構成としたので、上昇速度
及び上昇量等を自由に調整することができる。(Effects of the Invention) According to the present invention, since the support column or the support column and the guide column are lifted by power, there are various effects such as streamlining the work, improving efficiency, and increasing the safety of the work. Further, according to the apparatus of the present invention, since the support column and the like are raised using the rack and the pinion, the raising speed and the amount of raising can be freely adjusted.
第１図はこの発明の実施例の一部正面図、第２図は同じ
く平面図、第３図は同じく駆動装置と支持柱との関係を
示す一部拡大正面図、第４図は同じく一部拡大平面図、
第５図は同じく他の実施例の一部正面図、第６図は同じ
く案内柱と移動枠との関係を示す一部を切断した拡大図
、第７図は同じく一部拡大平面図である。
１．２ａ、２ｂ・・・支持柱
３ａ、３ｂ・・・階段部材
４ａ、４ｂ、４ｃｍ床 ５ａ、５ ｂ −・・床槽材
６ａ、６ｂ、６Ｃ・・・踊り場部材
第
図
］
２］FIG. 1 is a partial front view of an embodiment of the present invention, FIG. 2 is a plan view, FIG. 3 is a partially enlarged front view showing the relationship between the drive device and the support column, and FIG. 4 is a partial front view of the embodiment of the invention. Enlarged plan view,
FIG. 5 is a partially front view of another embodiment, FIG. 6 is a partially cutaway enlarged view showing the relationship between the guide column and the moving frame, and FIG. 7 is a partially enlarged plan view. . 1.2a, 2b...Support columns 3a, 3b...Stair members 4a, 4b, 4cm floor 5a, 5b -...Floor tank materials 6a, 6b, 6C...Landing member diagram] 2]
Claims (1)
持柱は既設床及び既設階段に固定すると共に、少なくと
も一階分の階段部材を前記支持柱に沿つて前記既設階段
に連設した後、当該新設階段に対応して床を構築し、つ
いで前記支持柱と階段との拘束を解いて、前記支持柱を
少なくとも一階段分の長さだけ上方へ移動させた後、前
記新階段と支持柱とを固定する。ついで前記作業を繰り
返すことにより逐次階段を構築することを特徴とした建
造物用階段の構築方法 ２ 支持柱の移動は、案内柱に装着した搬送装置を用い
た請求項１記載の建造物用階段の構築方法３ 支持柱の
移動は、支持柱に設けたラックに、駆動機のピニオンを
咬み合せる装置とした請求項１記載の建造物用階段の構
築方法 ４ 支持柱の一側にラックを設け、該ラックに動力と連
動するピニオンを咬み合せた支持柱の移動装置 ５ 支持柱にラック付の案内柱を並列設置し、前記支持
柱と案内柱とに共通の移動枠を装着し、該移動枠の一側
には支持柱との固定装置を設置すると共に、他側に案内
柱に設けたラックと咬み合うピニオンを架設し、該ピニ
オンに駆動装置を連結したことを特徴とする支持柱の移
動装置 ６ 支持柱は二本又は三本とした請求項４又は５記載の
支持柱移動装置[Scope of Claims] 1 Support columns are erected at predetermined intervals at a stair construction position, the support columns are fixed to the existing floor and the existing stairs, and at least one floor's worth of stair members are installed along the support columns. After being connected to the existing staircase, a floor was constructed to correspond to the new staircase, and then the restraint between the support column and the staircase was released, and the support column was moved upward by the length of at least one staircase. After that, the new staircase and support columns are fixed. 2. A method for constructing stairs for a building, characterized in that the steps are sequentially constructed by repeating the above-mentioned operations. 2. The staircase for a building according to claim 1, wherein the support columns are moved using a conveyance device attached to a guide column. 3. A method for constructing stairs for a building according to claim 1, wherein the support column is moved by a device that engages a pinion of a drive machine with a rack provided on the support column. 4. A rack is provided on one side of the support column. , a support column moving device 5 in which a pinion interlocked with the rack is engaged with the power; a guide column with a rack is installed in parallel with the support column; a common moving frame is attached to the support column and the guide column; A support column characterized in that a fixing device to the support column is installed on one side of the frame, a pinion that engages with a rack provided on a guide column is installed on the other side, and a drive device is connected to the pinion. Moving device 6 The supporting column moving device according to claim 4 or 5, wherein the number of supporting columns is two or three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63174461A JP2665943B2 (en) | 1988-07-13 | 1988-07-13 | Construction method of building stairs and supporting column moving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63174461A JP2665943B2 (en) | 1988-07-13 | 1988-07-13 | Construction method of building stairs and supporting column moving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0224445A true JPH0224445A (en) | 1990-01-26 |
| JP2665943B2 JP2665943B2 (en) | 1997-10-22 |
Family
ID=15978894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63174461A Expired - Fee Related JP2665943B2 (en) | 1988-07-13 | 1988-07-13 | Construction method of building stairs and supporting column moving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2665943B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5602819A (en) * | 1992-10-23 | 1997-02-11 | Matsushita Electric Industrial Co., Ltd. | Optical information system to detect reflection of pit depth by evanescent wave |
-
1988
- 1988-07-13 JP JP63174461A patent/JP2665943B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5602819A (en) * | 1992-10-23 | 1997-02-11 | Matsushita Electric Industrial Co., Ltd. | Optical information system to detect reflection of pit depth by evanescent wave |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2665943B2 (en) | 1997-10-22 |
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