JPH049908A - Lens focus locking device - Google Patents
Lens focus locking deviceInfo
- Publication number
- JPH049908A JPH049908A JP11336790A JP11336790A JPH049908A JP H049908 A JPH049908 A JP H049908A JP 11336790 A JP11336790 A JP 11336790A JP 11336790 A JP11336790 A JP 11336790A JP H049908 A JPH049908 A JP H049908A
- Authority
- JP
- Japan
- Prior art keywords
- lens barrel
- barrel
- lens
- bolt
- shaft
- 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
- 125000006850 spacer group Chemical group 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 1
Landscapes
- Lens Barrels (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は投写型テレビ受像機などに用いられる拡大投写
用レンズのフォーカスロック装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a focus lock device for an enlarged projection lens used in a projection type television receiver or the like.
従来の技術
近年、大画面に対するニーズが高まっており、投写レン
ズを用いてスクリーンに拡大投写し、大画面を得る投写
型テレビの需要が急増してきている。そのために、高輝
度、高解像度な画質が求められ、ブラウン管面に形成さ
れた画像を拡大投写するレンズ群に対しても高精度なも
のが必要とされてきている。この投写型テレビのレンズ
を用いて所定の位置にあるスクリーンに投影像を鮮明に
結像させるには、必ずレンズのフォーカシングが必要が
あり、調整後は容易にフォーカスがずれないように確実
に固定しなければならない。2. Description of the Related Art In recent years, there has been an increasing need for large screens, and there has been a rapid increase in demand for projection-type televisions that use a projection lens to enlarge and project onto a screen to obtain a large screen. For this reason, high brightness and high resolution image quality are required, and a lens group that enlarges and projects the image formed on the cathode ray tube surface is also required to have high precision. In order to clearly form a projected image on the screen in a predetermined position using the lens of this projection TV, it is necessary to focus the lens, and after adjustment, it must be fixed securely so that it does not easily shift focus. Must.
以下図面を参照しながら、従来のフォーカスロック装置
の一例について説明する。An example of a conventional focus lock device will be described below with reference to the drawings.
第４図は従来、用いられているフォーカスロック装置の
一例である。また第５図はその斜視図である。FIG. 4 shows an example of a conventionally used focus lock device. Further, FIG. 5 is a perspective view thereof.
３は後外鏡筒であり、ブラウン管側（図示せず）に固定
され、内空部には前後動および回転自在に中鎖筒ｌが収
納されている。また２は前外鏡筒であり、レンズが１枚
収納され、内空部には同様に前後動、回転自在に中鎖筒
１が収納されている。Reference numeral 3 denotes a rear outer lens barrel, which is fixed to the cathode ray tube side (not shown), and a medium chain barrel 1 is housed in the inner space so as to be movable back and forth and rotatable. Reference numeral 2 denotes a front and outer lens barrel in which one lens is housed, and a medium chain barrel 1 is similarly housed in the inner space so as to be movable back and forth and rotatable.
中鎖筒１は複数のレンズ５〜８がある間隔で固定されて
いる。A plurality of lenses 5 to 8 are fixed to the medium chain cylinder 1 at certain intervals.
前外鏡筒２、後外鏡筒３の外壁面には、カム孔２ａ、２
ｂ、３ａ、３ｂが各々１８０” ＩＩれた回転対称位置
に形成されている。尚、カム孔２ａ、２ｂ、と３ａ、３
ｂのカム変位曲線は同一である。また、中鎖ｍｌには嵌
合溝１８が設けられ、極めてガタ少く固定ナツト１０が
嵌合し、固定ナツト１０の中央近傍にはネジ穴が設けら
れている。９はロックボルトで、ネジ部が設けられ、歯
付き座金１１を挿入した状態でカム穴２ａ ２ｂ、およ
び３ａ、３ｂに係合し、回転させることによりロックボ
ルト９のネジ部と固定ナツト１０のネジ穴が螺嵌する。Cam holes 2a, 2 are provided on the outer wall surfaces of the front outer barrel 2 and the rear outer barrel 3.
The cam holes 2a, 2b and 3a, 3b are formed at rotationally symmetrical positions with a distance of 180" II, respectively.
The cam displacement curves of b are the same. Further, the medium chain ml is provided with a fitting groove 18 into which the fixing nut 10 is fitted with very little play, and a screw hole is provided near the center of the fixing nut 10. Reference numeral 9 denotes a lock bolt, which is provided with a threaded portion, and is engaged with the cam holes 2a, 2b, and 3a, 3b when the toothed washer 11 is inserted, and is rotated to connect the threaded portion of the lock bolt 9 with the fixing nut 10. The screw hole will fit.
以上のように構成されたレンズフォーカスロック装置に
ついて、以下にその動作について説明する。The operation of the lens focus lock device configured as described above will be described below.
レンズフォーカスを合わせるため、中鎖筒１及び前外鏡
ＷＪ２を前後に動かすが、ロックボルト９がカム孔２ａ
、２ｂ、および３ａ、３ｂに係合し、これにそって回転
することで、カム曲線に合わせて光軸方向に動くもので
ある。前外鏡筒２、後外鏡筒３と中鎖１！Ｊｌは極めて
嵌合部のガタを少くしており、光軸の傾きが生じないよ
うにしている。なおフォーカシング終了時にはロックボ
ルト９を最後まで回し、固定ナツト１０が上がって来る
ことで前外鏡筒２、後外鏡？Ｊ３を挟締し、中鎖筒１が
動かないように固定される。ここで固定ナツト１０とロ
ックボルト９のとの挟締力だけでは確実なロックは無理
なので、金属製の歯付き座金１１を間に入れることでロ
ックを実用的使用可能状態にしている。In order to adjust the lens focus, the medium chain barrel 1 and the front external mirror WJ2 are moved back and forth, but the lock bolt 9 is stuck in the cam hole 2a.
, 2b, and 3a, 3b, and rotates along them, thereby moving in the optical axis direction in accordance with the cam curve. Front outer barrel 2, rear outer barrel 3 and middle chain 1! Jl has extremely little looseness at the fitting portion, and prevents the optical axis from tilting. When focusing is finished, turn the lock bolt 9 all the way and the fixing nut 10 will come up, allowing the front and rear lens barrels 2 and 2 to be locked together. J3 is clamped and the medium chain cylinder 1 is fixed so that it does not move. Here, since it is impossible to securely lock the lock simply by the clamping force between the fixing nut 10 and the lock bolt 9, a metal toothed washer 11 is inserted in between to make the lock usable for practical use.
発明が解決しようとする課題
上記フォーカスロック装置をスクリーンと投写装置が離
れている２体型投写テレビに用いたとき、さまざまな不
都合を生じる。Problems to be Solved by the Invention When the focus lock device described above is used in a dual-type projection television in which the screen and the projection device are separated, various problems arise.
２体型投写テレビは、フォーカシングの操作が市場のユ
ーザーやサービスマンによって行われる。In two-type projection televisions, focusing operations are performed by market users or service personnel.
このとき、上記フォーカシング装置では、ロックボルト
９をゆるめすぎると、ロックボルト９（通常成形品）な
らびに通常金属製の歯付き座金１１が脱落し、テレビ装
置内部に落ち、払い上げるのが困難であるとともに、電
気的ショート並びにトラブルを起こすという問題があっ
た。At this time, in the above-mentioned focusing device, if the lock bolt 9 is loosened too much, the lock bolt 9 (usually a molded product) and the toothed washer 11, which is usually made of metal, fall off and fall inside the television set, making it difficult to remove them. In addition, there was a problem of electrical short circuits and other troubles.
本発明は、上記問題点を解決するために考案されたもの
である。The present invention was devised to solve the above problems.
課題を解決するための手段
上記問題点を解決するために、本発明のレンズフォーカ
ス装置は、外周壁面に案内孔を有する第１の鏡筒と、こ
の第１鏡筒の内部を光軸方向に移動する回転自在な第２
の鏡筒と、前記第２の！Ｍの嵌合部に嵌合し、中央近傍
に雌ネジ部ををする固定板と、前記案内孔に嵌合する支
軸部および固定板の雌ネジ部に螺嵌する雄ネジ部を有し
、軸芯部に通し穴を有した、前記光軸方向に垂直な位１
で前記第１の鏡筒より外側に突出する回転軸と、前記回
転軸が挿入され、前記第１のａｍの外周に接触するスペ
ーサならびに、前記軸芯部通し穴を通ってその先端が第
２の鏡筒に固定され、第１鏡筒の外側に軸芯部通し孔径
より大きい径を有する頭部を持つストッパ軸よりなるフ
ォーカスロック装置であって、前記回転軸の締付時は前
記固定板と前記スペーサにより、前記第１の鏡筒を挟締
して前記第２の鏡筒の回動を阻止し、かつフォーカス時
に鏡筒の挟締をゆるめても、前記ストッパ軸によって、
回転軸およびスペーサの脱落を阻止するものである。Means for Solving the Problems In order to solve the above-mentioned problems, the lens focus device of the present invention includes a first lens barrel having a guide hole on the outer circumferential wall surface, and an interior of the first lens barrel that extends in the optical axis direction. Moving rotatable second
lens barrel, and the second! A fixing plate that fits into the fitting part of M and has a female threaded part near the center, a support shaft part that fits into the guide hole, and a male threaded part that screws into the female threaded part of the fixing plate. , a position 1 perpendicular to the optical axis direction, having a through hole in the axial center part.
a rotating shaft that protrudes outward from the first lens barrel; a spacer into which the rotating shaft is inserted and contacts the outer periphery of the first am; A focus locking device comprising a stopper shaft fixed to a lens barrel of the first lens barrel and having a head having a diameter larger than the shaft core through hole diameter on the outside of the first lens barrel, when the rotation shaft is tightened, the fixing plate The first lens barrel is clamped by the spacer to prevent rotation of the second lens barrel, and even if the clamping of the lens barrel is loosened during focusing, the stopper shaft
This prevents the rotating shaft and spacer from falling off.
作用
本発明は、前述したように、第２の鏡筒に固定され、回
転軸の軸芯部に施された通し孔に案内されたストッパ軸
の頭部により回転軸の戻りを阻止するため、回転軸およ
び通常金属でつくられるスペーサの脱落が阻止されるよ
うになり、電気的トラブル等が発生しない。As described above, the present invention prevents the rotational shaft from returning by the head of the stopper shaft that is fixed to the second lens barrel and guided through the through hole formed in the axial center of the rotational shaft. The rotating shaft and the spacer, which is usually made of metal, are prevented from falling off, and electrical troubles do not occur.
実施例
以下本発明の一実施例のレンズフォーカスロツり装置に
ついて図面を参照しながら説明する。Embodiment Hereinafter, a lens focus locking device according to an embodiment of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例におけるレンズフォーカスロ
ック装置の組立断面図で、第２図はその側面から見た機
能の一部を表す正面断面図である。FIG. 1 is an assembled sectional view of a lens focus lock device according to an embodiment of the present invention, and FIG. 2 is a front sectional view showing some of its functions as seen from the side.
また第３図は回転軸となるロックボルトと、固定板とし
ての固定ナツト、スペーサ脱落防止用ストッパ軸の関係
を拡大して示したものである。FIG. 3 is an enlarged view of the relationship between a lock bolt as a rotating shaft, a fixing nut as a fixing plate, and a stopper shaft for preventing the spacer from falling off.
図中３は後外鏡筒で、円柱中空形状でブラウン管面側（
図示せず）に固定され、内空部には前後動および回転自
在に申請？＃Ｖ１が収納されている。3 in the figure is the rear outer lens barrel, which has a cylindrical hollow shape and faces the cathode ray tube (
(not shown), and the inner space can be moved back and forth and rotated freely. #V1 is stored.
また、実施例の鏡筒はダブルフォーカス構造、すなわち
フォーカスする筒が中鎖簡１および前外鏡筒２と２つあ
り、中鎖筒ｌには、中空円柱状の前鏡筒２が前後動およ
び回転可能に嵌合している。In addition, the lens barrel of the embodiment has a double focus structure, that is, there are two focusing tubes, the medium chain barrel 1 and the front and outer lens barrel 2, and the hollow cylindrical front lens barrel 2 is movable back and forth in the medium chain barrel l. and are rotatably mated.
そして前外鏡筒２にはレンズ４、中鎖筒１には複数のレ
ンズ５〜８が一定間隔でそれぞれ固定されている。A lens 4 is fixed to the front and outer barrel 2, and a plurality of lenses 5 to 8 are fixed to the middle chain barrel 1 at regular intervals.
後外鏡筒３の外壁面には、案内孔としての役割を果たす
カム孔３ａ、３ｂが各々１８０°離れた回転対称位置に
形成され、前外鏡筒２にも同様にカム孔２ａ、２ｂが形
成されている。カム孔３ａ、３ｂ ｍびにカム孔２ａ、
２ｂのカム曲線は同一である。また中鎖筒１には嵌合溝
１ａ、ｌｂが設けられ、極めてガタ少く固定ナツト１０
が各々１８０°対称位置に嵌合している。この固定ナツ
ト１０の中央近傍にはネジ穴１０ａが形成されている。On the outer wall surface of the rear outer lens barrel 3, cam holes 3a and 3b that serve as guide holes are formed at rotationally symmetrical positions 180 degrees apart, and the front outer lens barrel 2 also has cam holes 2a and 2b. is formed. Cam holes 3a, 3b m and cam holes 2a,
The cam curves of 2b are the same. In addition, the medium chain cylinder 1 is provided with fitting grooves 1a and lb, so that the fixing nut 10 can be tightened with extremely little play.
are fitted in 180° symmetrical positions. A screw hole 10a is formed near the center of this fixing nut 10.
ロックボルト９は回転軸で、先端に雄ネジ部が形成され
、また外鏡筒より突出して外側から回転可能であり、カ
ム孔２ａ、２ｂ、３ａ ３ｂに挿入され、回転すること
により、固定ナン目０と螺嵌しながら締結する。The lock bolt 9 is a rotating shaft with a male thread formed at its tip, protrudes from the outer lens barrel, and can be rotated from the outside.The lock bolt 9 is inserted into the cam holes 2a, 2b, 3a, and 3b, and rotates to lock the fixing bolt. Tighten by screwing into eye 0.
第３図に示すように、このロックボルト９のうち一方（
図の上側）には、カム孔３ａに挿入される前に歯付き座
金であるところのスペーサＩＩを外鏡筒の外側において
挿入しており、前述のように固定ナツト１０と締結する
ことにより前外鏡筒２および後外鏡筒３の表面にスペー
サ１１がくいこみ、中鎖筒１と前外鏡筒２および後外鏡
筒３との回転止めをする。また、ロックボルト９には、
軸心にストッパ軸１２の軸部のみを通し頭部が通らない
ような径であけられた通し孔９ａがあり、この通し孔９
ａを通して、ストッパ軸１２がその先端にて中鎖筒１に
固定されている。As shown in FIG. 3, one of the lock bolts 9 (
Before being inserted into the cam hole 3a (upper side of the figure), a spacer II, which is a toothed washer, is inserted on the outside of the outer barrel, and is fastened to the fixing nut 10 as described above. A spacer 11 is fitted into the surfaces of the outer barrel 2 and the rear outer barrel 3 to stop the rotation of the medium chain barrel 1, the front outer barrel 2, and the rear outer barrel 3. In addition, the lock bolt 9 has
There is a through hole 9a in the shaft center with a diameter that allows only the shaft portion of the stopper shaft 12 to pass through and prevents the head from passing through.
A stopper shaft 12 is fixed to the medium chain cylinder 1 at its tip through a.
以上のように構成されたレンズフォーカスロック装置に
ついて、以下にその動作を説明する。The operation of the lens focus lock device configured as described above will be described below.
レンズ焦点を合わせるため中鎖筒ｌを前後に動かすが、
ロックボルト９が後外鏡筒３のカム孔３ａ３ｂに係合し
ているため、中鎖筒ｌはこのカム孔３ａ３ｂにそって回
動することでカム曲線に合わせて光軸方向に動く。前外
鏡筒２の場合も同様である。In order to focus the lens, move the medium chain barrel l back and forth,
Since the lock bolt 9 is engaged with the cam hole 3a3b of the rear outer lens barrel 3, the medium chain barrel 1 rotates along the cam hole 3a3b and moves in the optical axis direction in accordance with the cam curve. The same applies to the front and outer lens barrels 2.
後外饋筒３と中鎖筒１および前外鏡筒２と中鎖筒１は極
めて嵌合のガタを少くしており、光軸傾きがない。The rear outer feed tube 3 and the middle chain tube 1, and the front outer lens barrel 2 and the middle chain tube 1 have very little looseness in their fitting, and there is no optical axis tilt.
フォーカシング終了時は前述のようにロックボルト９を
最後まで回すと、固定ナツト１０が上がり、後外鏡筒３
前外鏡筒２の外壁をロックボルト９、固定ナツト１０、
スペーサ１１で挟結し中鎖筒１が動かないようになる。When focusing is finished, turn the lock bolt 9 all the way as described above, the fixing nut 10 will rise, and the rear outer lens barrel 3 will be raised.
Attach the outer wall of the front outer lens barrel 2 to the lock bolt 9, fixing nut 10,
The spacers 11 sandwich the medium chain cylinder 1 so that it does not move.
ここで、フォーカシングは、ロックボルト９をゆるめて
行うが、ある程度ゆるめると、ロックボルト９がストッ
パ軸１２の頭部に阻止され、ロックボルト９およびスペ
ーサ１１が鏡筒より脱落するのを防いでいる。Here, focusing is performed by loosening the lock bolt 9, but when loosened to a certain extent, the lock bolt 9 is blocked by the head of the stopper shaft 12, preventing the lock bolt 9 and the spacer 11 from falling off from the lens barrel. .
なお、歯付座金であるところのスペーサ１１がなくても
挟結はできるが、完全に固定することが難しく、振動等
で再び回動しやすいため使用した方が実用上杆しいもの
である。Note that although it is possible to clamp the spacer 11 without the spacer 11, which is a toothed washer, it is difficult to fix it completely and it is easy to rotate again due to vibration, etc., so it is more practical to use the spacer 11.
発明の効果
以上のように本発明のレンズフォーカスロック装置は、
外面壁面に案内孔を有する第１の鏡筒と、この第１の鏡
筒の内部を光軸方向に移動する回転自在な第２の鏡筒を
固定するために、第２の鏡筒の嵌合部に嵌合し、中央近
傍に雄７ジ部を有する固定板と、前記第１鏡簡の案内孔
に嵌合する支軸部および前記固定板に螺嵌する８２２部
を有し、かつ、軸芯に通し孔を施し、光軸方向に垂直な
位置で第１の鏡筒より外側に突出する回転軸と、この回
転軸の前記軸芯部通し孔を逼り、第１の鏡筒の外側に前
記軸芯部通し孔より大きな径を有する頭部を有し、第２
の鏡筒に固定されたストッパ軸、そして、前記回転軸が
挿入され、前記第１の鏡筒の外周に接触するスペーサと
から成るレンズフォーカスロック装置であって、前記回
転軸の締付時は前記固定板と前記スペーサが第１の鏡筒
を挟締して前記第２の鏡筒の回動を確実に阻止し、又、
フォーカシング時に前記回転軸の締結をゆるめても、あ
る程度の回転で前記ストッパ軸の頭部に阻止され、回転
軸、スペーサの脱落を防ぐものである。As described above, the lens focus lock device of the present invention has the following advantages:
In order to fix a first lens barrel having a guide hole on the outer wall surface and a rotatable second lens barrel that moves inside the first lens barrel in the optical axis direction, a second lens barrel is fitted. a fixing plate that fits into the joint part and has a male 7-jet part near the center; a support shaft part that fits into the guide hole of the first mirror strip; and a part 822 that screws into the fixing plate; , a rotating shaft having a through hole formed in the shaft core and protruding outward from the first lens barrel at a position perpendicular to the optical axis direction; has a head having a larger diameter than the shaft core through hole on the outside of the second
a stopper shaft fixed to a lens barrel; and a spacer into which the rotating shaft is inserted and comes into contact with the outer periphery of the first lens barrel; The fixing plate and the spacer clamp the first lens barrel to reliably prevent rotation of the second lens barrel, and
Even if the rotation shaft is loosened during focusing, the head of the stopper shaft rotates to a certain extent to prevent the rotation shaft and spacer from falling off.
本発明は、第１の鏡筒との挟締固定を確実にするため通
常、熱伝導性金属でつくられるスペーサが、回転軸がゆ
るんでも、ストッパ軸頭部により鏡筒外に脱落すること
なく、電気的ショート等のトラブルが起きないものであ
る。In the present invention, even if the rotating shaft becomes loose, the spacer, which is normally made of a heat conductive metal, is prevented from falling out of the lens barrel by the stopper shaft head in order to securely clamp and fix the spacer to the first lens barrel. , troubles such as electrical shorts do not occur.
第１図は本発明の一実施例におけるレンズフォーカスロ
ック装置の組立断面図、第２図はその側面から見た機能
の一部を表す正面断面図、第３図は回転軸であるロック
ボルトと固定ナツト、スペーサの関係を表した拡大断面
図、第４図は従来例であるところのレンズフォーカスロ
ック装置の組立断面図、第ｉ図はその斜視図である。
ｌ・・・・・・中鎖筒（第２の鏡筒）、２・・・・・・
前外鏡筒（第１の鏡筒）、３・・・・・・後外鏡ｍ（第
１の鏡筒）、４〜８・・・・・・レンズ、９・・・・・
・ロックボルト（回転軸）、１０・・・・・・固定ナツ
ト（固定板）、１１・・・・・・スペーサ、１２・・・
・・・ストッパ軸。
代理人の氏名 弁理士 粟野重孝 はか１名ｌ
算 ２
のａｍ
常
門Fig. 1 is an assembled sectional view of a lens focus lock device according to an embodiment of the present invention, Fig. 2 is a front sectional view showing some of its functions as seen from the side, and Fig. 3 shows a lock bolt which is a rotation axis. FIG. 4 is an enlarged sectional view showing the relationship between a fixing nut and a spacer, FIG. 4 is an assembled sectional view of a conventional lens focus lock device, and FIG. i is a perspective view thereof. l...Medium chain tube (second lens barrel), 2...
Front outer lens barrel (first lens barrel), 3... Rear outer mirror m (first lens barrel), 4 to 8... Lens, 9...
・Lock bolt (rotating shaft), 10... Fixing nut (fixing plate), 11... Spacer, 12...
...stopper shaft. Name of agent Patent attorney Shigetaka Awano
Claims (1)
第２の鏡筒と、 第２の鏡筒の嵌合部に嵌合し、中央近傍に雌ネジ部を有
した固定板と、 前記第１鏡筒の案内孔に嵌合する支軸部および前記固定
板に螺嵌する雄ネジ部と軸芯部に通し孔を有し、光軸方
向に垂直な位置で第１の鏡筒より外側に突出する回転軸
と、 前記回転軸が挿入され、前記第１の鏡筒の外周に接触す
るスペーサと、 前記回転軸の軸芯部に施された通し孔を通り、その先端
が第２の鏡筒に固定されるとともに、前記通し孔の孔径
より大きな頭部を有するストッパ軸とを有するレンズフ
ォーカスロック装置。[Scope of Claims] A first lens barrel having a guide hole on an outer peripheral wall surface, a rotatable second lens barrel that moves in the optical axis direction inside the first lens barrel, and a second lens barrel. a fixing plate that fits into the fitting portion of the first lens barrel and has a female threaded portion near the center, a support shaft that fits into the guide hole of the first lens barrel, a male threaded portion that screws into the fixing plate, and a shaft. a rotating shaft that has a through hole in its core and projects outward from the first lens barrel at a position perpendicular to the optical axis direction; and a spacer into which the rotating shaft is inserted and contacts the outer periphery of the first lens barrel. and a stopper shaft that passes through a through hole formed in the axial center of the rotating shaft, has a tip thereof fixed to the second lens barrel, and has a head larger than the hole diameter of the through hole. locking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2113367A JP2775985B2 (en) | 1990-04-27 | 1990-04-27 | Lens focus lock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2113367A JP2775985B2 (en) | 1990-04-27 | 1990-04-27 | Lens focus lock device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH049908A true JPH049908A (en) | 1992-01-14 |
| JP2775985B2 JP2775985B2 (en) | 1998-07-16 |
Family
ID=14610486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2113367A Expired - Fee Related JP2775985B2 (en) | 1990-04-27 | 1990-04-27 | Lens focus lock device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2775985B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006047986A (en) * | 2004-06-30 | 2006-02-16 | Tamron Co Ltd | Optical device |
| JP2016071168A (en) * | 2014-09-30 | 2016-05-09 | 京セラオプテック株式会社 | Click mechanism |
| CN113568128A (en) * | 2020-04-10 | 2021-10-29 | 中强光电股份有限公司 | Focusing mechanism and projection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56104702U (en) * | 1980-01-10 | 1981-08-15 | ||
| JPS5853912U (en) * | 1981-10-08 | 1983-04-12 | 三菱電機株式会社 | bolt device |
| JPS61130908U (en) * | 1985-02-01 | 1986-08-15 |
-
1990
- 1990-04-27 JP JP2113367A patent/JP2775985B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56104702U (en) * | 1980-01-10 | 1981-08-15 | ||
| JPS5853912U (en) * | 1981-10-08 | 1983-04-12 | 三菱電機株式会社 | bolt device |
| JPS61130908U (en) * | 1985-02-01 | 1986-08-15 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006047986A (en) * | 2004-06-30 | 2006-02-16 | Tamron Co Ltd | Optical device |
| JP2016071168A (en) * | 2014-09-30 | 2016-05-09 | 京セラオプテック株式会社 | Click mechanism |
| CN113568128A (en) * | 2020-04-10 | 2021-10-29 | 中强光电股份有限公司 | Focusing mechanism and projection device |
| CN113568128B (en) * | 2020-04-10 | 2024-02-02 | 中强光电股份有限公司 | Focusing mechanism and projection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2775985B2 (en) | 1998-07-16 |
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