JPS6378115A - Automatic focus adjustor - Google Patents
Automatic focus adjustorInfo
- Publication number
- JPS6378115A JPS6378115A JP61224104A JP22410486A JPS6378115A JP S6378115 A JPS6378115 A JP S6378115A JP 61224104 A JP61224104 A JP 61224104A JP 22410486 A JP22410486 A JP 22410486A JP S6378115 A JPS6378115 A JP S6378115A
- Authority
- JP
- Japan
- Prior art keywords
- solid
- state image
- optical filter
- image sensor
- holder
- 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.)
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- 230000003287 optical effect Effects 0.000 claims abstract description 86
- 238000012856 packing Methods 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 10
- 238000003384 imaging method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はビデオカメラの光学系などに利用できる自動焦
点調節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 an automatic focus adjustment device that can be used in the optical system of a video camera.
従来の技術
従来、この種の自動焦点調節装置は第6図または第7図
のように構成されている。第6図において、合焦レンズ
群1とズームレンズ群2およびマスターレンズ群3など
から構成される撮影レンズ系4を通過した光は、光路長
変動用レンズ5と光学的ローパスフィルタとしての光学
フィルタ6とを介して固体撮像素子7で結像するよう構
成されている。前記の光路長変動用レンズ5は薄い円環
状金属板8を介して保持されており、この金属板8の両
面に貼り合わせられた円環状圧電素子9a。2. Description of the Related Art Conventionally, this type of automatic focus adjustment device has been constructed as shown in FIG. 6 or 7. In FIG. 6, light that has passed through a photographing lens system 4 consisting of a focusing lens group 1, a zoom lens group 2, a master lens group 3, etc. is filtered through an optical path length varying lens 5 and an optical low-pass filter. The solid-state image sensor 7 is configured to form an image via the solid-state image sensor 6. The optical path length varying lens 5 is held via a thin annular metal plate 8, and annular piezoelectric elements 9a are bonded to both sides of the metal plate 8.
9bが発振器10の信号で駆動されると、光路長変動用
レンズ5が撮影レンズ系4の光軸(A)の方向に微少量
だけ振動して固体撮像素子7へ向かう光の光路長が微少
量だけ変化を繰り返す、なお、上記の微動装置の構成は
本出願人の出願に係る特開昭60−179710号公報
に詳しい。9b is driven by a signal from the oscillator 10, the optical path length varying lens 5 vibrates by a small amount in the direction of the optical axis (A) of the photographic lens system 4, and the optical path length of the light heading toward the solid-state image sensor 7 is slightly changed. The structure of the above-mentioned fine movement device, which repeats small changes, is detailed in Japanese Patent Application Laid-open No. 179710/1989 filed by the present applicant.
固体撮像素子7に得られた出力信号をアンプ11で増幅
し、周波数検出器12で前記圧電素子9a。The output signal obtained by the solid-state image sensor 7 is amplified by the amplifier 11, and the frequency detector 12 amplifies the output signal from the piezoelectric element 9a.
9bの振動周波数の成分を含む高周波信号を検出する。A high frequency signal containing a vibration frequency component of 9b is detected.
この周波数検出器12で検出された信号の位相と前記発
振器10の出力信号の位相とを位相比較器13で比較し
て、制御部14が焦点のずれ方向を極出し、固体撮像素
子7の出力電圧がピーク値になるようモータ15で前記
合焦レンズ群1を光軸(A)の方向に移動させて焦点を
合わせている。The phase of the signal detected by the frequency detector 12 and the phase of the output signal of the oscillator 10 are compared by the phase comparator 13, and the control unit 14 polarizes the direction of focus shift and outputs the output of the solid-state image sensor 7. Focusing is achieved by moving the focusing lens group 1 in the direction of the optical axis (A) using a motor 15 so that the voltage reaches its peak value.
なお、固体撮像素子7の出力信号に基づいて合焦レンズ
1を駆動する制御系の動作原理については、本出願人の
出願に係る特開昭60−42723号公報に詳しい。The operating principle of the control system for driving the focusing lens 1 based on the output signal of the solid-state image sensor 7 is detailed in Japanese Patent Laid-Open No. 60-42723 filed by the present applicant.
第6図に示した装置では固体撮像素子7が固定されてい
て光路長変動用レンズ5が振動していたが、この他に、
第7図に示すように圧電素子9a。In the device shown in FIG. 6, the solid-state image sensor 7 was fixed and the optical path length varying lens 5 was vibrating, but in addition to this,
As shown in FIG. 7, a piezoelectric element 9a.
9bが両面に貼り合わせられた金属板8で固体撮像素子
7を保持して構成したものがある。第7図では第6図と
同様の作用を成すものには同一符号が付されている。There is a structure in which the solid-state image sensor 7 is held by a metal plate 8 with 9b bonded to both sides. In FIG. 7, parts having the same functions as those in FIG. 6 are given the same reference numerals.
第7図に示した装置の場合、従来では光学フィルタ6と
固体撮像素子7は第8図のように各別のホルダー16.
17を介して鏡筒18の互いに離れた位置に取り付けら
れている。ここでホルダー17においては、金属板8の
外周部がホルダー17とこの内周部にねじ込まれたリン
グ21とで挟持されている。In the case of the apparatus shown in FIG. 7, conventionally, the optical filter 6 and the solid-state image sensor 7 are placed in separate holders 16 and 16, respectively, as shown in FIG.
They are attached to the lens barrel 18 at mutually distant positions via 17. In the holder 17, the outer periphery of the metal plate 8 is held between the holder 17 and a ring 21 screwed into the inner periphery.
一方、金属板8の中央に穿けられた孔には可動側ホルダ
ー19の先端19aが差し込まれ、この先端19aにね
じ込まれたリング20と可動側ホルダー19とで円環状
の金属板8の円周部を挟持することにより可動側ホルダ
ー19が保持されている。そしてこの可動側ホルダー1
9に固体撮像素子7が取り付けられている。On the other hand, the tip 19a of the movable holder 19 is inserted into the hole drilled in the center of the metal plate 8, and the ring 20 screwed into the tip 19a and the movable holder 19 form a ring around the circumference of the metal plate 8. The movable side holder 19 is held by pinching the parts. And this movable side holder 1
A solid-state image sensor 7 is attached to 9.
発明が解決しようとする問題点
第7図と第8図に示すような従来の構成においてビデオ
カメラの小型化と軽量化を図るためには。Problems to be Solved by the Invention How to reduce the size and weight of a video camera with the conventional configuration shown in FIGS. 7 and 8.
第9図のように光学フィルタ6と固体撮像素子7との間
隔(見)を短くシ、固体撮像素子7の結像面の近傍位置
で光学フィルタ6が光路に入るようにして、光学フィル
タ6の小形化と軽量化を行うことが有効であるが、光学
フィルタ6と固体撮像素子7とを各別のホルダー16.
17に取り付けている従来の構成では、ホルダー16と
ホルダー17とが第9図のように当接して、前記の間隔
(見)を十分に短くできない。As shown in FIG. 9, the distance between the optical filter 6 and the solid-state imaging device 7 is shortened so that the optical filter 6 enters the optical path at a position near the imaging plane of the solid-state imaging device 7. Although it is effective to reduce the size and weight of the optical filter 6 and the solid-state image sensor 7 in separate holders 16.
In the conventional structure in which the holder 16 and the holder 17 are attached to each other as shown in FIG. 9, the holder 16 and the holder 17 come into contact with each other as shown in FIG.
また、間隔(立)を短くできたとしても圧電素子9a、
9bで駆動されて光軸(A)の方向に振動している可動
側ホルダー19が光学フィルタ6に接触して、固体撮像
素子7の正常な振動を妨げる。Moreover, even if the interval (vertical) can be shortened, the piezoelectric elements 9a,
The movable holder 19, which is being driven by the holder 9b and vibrating in the direction of the optical axis (A), comes into contact with the optical filter 6 and prevents normal vibration of the solid-state image sensor 7.
この他、従来では光学フィルタ6と固体撮像素子7とを
一体に保持したものとしては、第10図に示すものがあ
る〔たとえば、特開昭60−207107号公報など〕
。これは、ビス22で固体撮像素子7が取り付けられた
ホルダー後部23を、ビス24a、24bでホルダー前
部25に取り付け、ホルダー前部25の前記ホルダー後
部23の取り付は側とは反対側から光学フィルタ6を挿
入して、ビス26a、26bでホルダー前部25に取り
付けられる押え板27とホルダー前部25の突部28と
で光学フィルタ6を挟持しているが、ホルダー後部23
とホルダー前部25とからなるホルダー29への固体撮
像素子7の取り付けと光学フィルタ6の取り付けとが別
別に行われているため、組み立ての工数が多くなる問題
がある。In addition, there is a conventional system in which the optical filter 6 and the solid-state image sensor 7 are held together as shown in FIG.
. In this case, the holder rear part 23 to which the solid-state image sensor 7 is attached is attached with screws 22 to the holder front part 25 with screws 24a and 24b, and the holder rear part 23 of the holder front part 25 is attached from the opposite side. After inserting the optical filter 6, the optical filter 6 is held between the holding plate 27 attached to the holder front part 25 with screws 26a and 26b and the protrusion 28 of the holder front part 25, but the holder rear part 23
Since the mounting of the solid-state image sensor 7 and the mounting of the optical filter 6 to the holder 29 consisting of the holder front portion 25 and the holder front portion 25 are performed separately, there is a problem in that the number of assembly steps increases.
本発明は固体撮像素子を振動させて自動の焦点合せを行
う撮像装置において、固体撮像素子の正常な振動を妨げ
ることなく光学フィルタと固体撮像素子との間隔を短く
でき、しかも少ない工数で光学フィルタと固体撮像素子
との一体部分を組み上げることができる自動焦点調節装
置を提供することを目的とする。The present invention provides an imaging device that performs automatic focusing by vibrating a solid-state image sensor, in which the distance between the optical filter and the solid-state image sensor can be shortened without interfering with the normal vibration of the solid-state image sensor, and the optical filter can be filtered with less man-hours. An object of the present invention is to provide an automatic focusing device that can be assembled into an integral part with a solid-state image sensor and a solid-state image sensor.
問題点を解決するための手段
本発明の自動焦点調節装置は、撮影レンズ系と固体撮像
素子の間に配設される光学フィルタを前記固体撮像素子
と一体に設け、この光学フィルタと固体撮像素子を電気
信号で前記撮影レンズ系の光軸方向に振動させる振動装
置を設け、固体撮像素子の出力信号により焦点のずれを
検出し前記撮影レンズ系のレンズを移動させて焦点を合
わせるように構成し、かつ前記固体撮像素子と光学フィ
ルタとを一体に保持する部分を、前記光軸方向の貫通孔
が形成された可動側ホルダーを設け、この可動側ホルダ
ーの貫通孔の一端側に内方に向かって形成された突部の
上に前記光学フィルタを載置し、前記貫通孔の他端鍔の
開口部に取り付けられる前記固体撮像素子の端面と前記
光学フィルタとの間に環状の弾性体を介装して、固体撮
像素子あ端面と可動側ホルダーの前記突部とで前記光学
フィルタを挟持するように構成したことを特徴とする。Means for Solving the Problems The automatic focus adjustment device of the present invention includes an optical filter disposed between a photographing lens system and a solid-state image sensor, which is integrated with the solid-state image sensor, and a combination of the optical filter and the solid-state image sensor. A vibrating device is provided to vibrate the lens in the optical axis direction of the photographic lens system using an electric signal, and the lens of the photographic lens system is moved to adjust the focus by detecting a shift in focus using an output signal from a solid-state image sensor. , and a movable holder is provided in which a through hole in the optical axis direction is formed for a portion that holds the solid-state image sensor and the optical filter together, and the portion that holds the solid-state image sensor and the optical filter together is provided with a movable side holder in which a through hole is formed in the direction of the optical axis, and the movable side holder is provided with a movable side holder that faces inward toward one end of the through hole. The optical filter is placed on the protrusion formed by the through hole, and an annular elastic body is interposed between the optical filter and the end surface of the solid-state image sensor attached to the opening of the other end flange of the through hole. The optical filter is configured such that the optical filter is held between the other end surface of the solid-state image sensor and the protrusion of the movable holder.
作用
この構成によると、光学フィルタと固体撮像素子とが一
体であるため、光学フィルタは振動装置の駆動によって
固体撮像素子と同じ方向に振動し。According to this configuration, since the optical filter and the solid-state image sensor are integrated, the optical filter is vibrated in the same direction as the solid-state image sensor by the driving of the vibration device.
固体撮像素子の振動を妨げることがなく、光学フィルタ
と固体撮像素子の間隔を最も短くできる。The distance between the optical filter and the solid-state image sensor can be made the shortest without disturbing the vibration of the solid-state image sensor.
さらに、固体撮像素子の端面と可動側ホルダーの突部と
で光学フィルタを挟持するため、可動側ホルダーに固体
撮像素子を固定することによって固体撮像素子だけでな
く光学フィルタも可動側ホルダーに固定できる。Furthermore, since the optical filter is sandwiched between the end face of the solid-state image sensor and the protrusion of the movable holder, by fixing the solid-state image sensor to the movable holder, not only the solid-state image sensor but also the optical filter can be fixed to the movable holder. .
実施例
以下本発明の一実施例を第1図〜第5図に基づいて説明
する。なお、撮影レンズ系とその焦点制御のための電気
回路は第7図と同様であるが、ここでその焦点制御動作
を詳しく説明する。EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 5. The photographing lens system and the electric circuit for controlling its focus are the same as those shown in FIG. 7, but the focus control operation will be explained in detail here.
固体撮像素子7の出力信号はアンプ11で増幅され、周
波数検出器12によりその高周波成分が取り出される。The output signal of the solid-state image sensor 7 is amplified by an amplifier 11, and its high frequency component is extracted by a frequency detector 12.
ここで発振器10はたとえば15Hzで発振しており、
周波数検出器12の出力である高周波成分はその15)
1zで変調された形の波形である。この発振周波数の1
5Hzは、固体撮像素子7の出力信号より得られた画像
が、人間の目に不自然に映らないような周波数であれば
この値に限られるものではない、前記周波数検出器12
の出力と発振器10の出力とを位相比較器13で位相比
較することにより、被写体の前方または後方のいずれに
現在焦点が合っているかという情報を得、そわにもとづ
いて制御部14.モータ15を介して合焦レンズ#1の
移動方向を決定する。そして位相比較の結果が固体撮像
素子7の振動によりプラスマイナスを出力するレンズ位
置で焦点が合ったことを検出する制御動作を行なってい
る。Here, the oscillator 10 oscillates at, for example, 15Hz,
The high frequency component that is the output of the frequency detector 12 is 15)
This is a waveform modulated by 1z. 1 of this oscillation frequency
5Hz is not limited to this value as long as the image obtained from the output signal of the solid-state image sensor 7 does not appear unnatural to the human eye.
By comparing the phases of the output of the oscillator 10 and the output of the oscillator 10 with the phase comparator 13, information as to whether the front or rear of the subject is currently in focus is obtained, and based on the motion, the controller 14. The direction of movement of the focusing lens #1 is determined via the motor 15. Then, a control operation is performed to detect that the result of the phase comparison is focused at the lens position where the solid-state image pickup device 7 vibrates to output plus or minus.
第1図は本発明の一実施例における要部の縦断面図であ
る。第1図において、固体撮像素子7は可動側ホルダー
30にビス31a、 31bで取り付けられる。可動側
ホルダー30は第2図〜第4図に示すように、光軸(A
)の方向に沿った貫通孔32が形成されており、この貫
通孔32の被写体側の端部には環状の突部33が形成さ
れており、貫通孔32は突部33から固体撮像素子7が
装着される反対側に向かって順に、第1の収容部(a)
とこの第1の収容部(a)よりも大径の第2の収容部(
b)および第2の収容部(b)に続く第3の収容部(c
)とで形成されている。FIG. 1 is a vertical cross-sectional view of essential parts in an embodiment of the present invention. In FIG. 1, the solid-state image sensor 7 is attached to the movable holder 30 with screws 31a and 31b. As shown in FIGS. 2 to 4, the movable side holder 30 is aligned with the optical axis (A
), and an annular protrusion 33 is formed at the end of the through hole 32 on the subject side. in order toward the opposite side to which the first housing part (a) is attached.
and a second accommodating part (a) having a larger diameter than the first accommodating part (a).
b) and a third accommodating part (c) following the second accommodating part (b).
).
可動側ホルダー30は円環状の圧電素子9a。The movable side holder 30 is an annular piezoelectric element 9a.
9bが両面に貼り付けられた円環状の金属板8を介して
ホルダー34に取り付けられている。35は可動側ホル
ダー30の外周部にねじ込まれるリングで、リング35
と可動側ホルダー30とで前記金属板8の内周部を挟持
している。36はホルダー34の内周部にねじ込まれる
リングで、リング36とホルダー34とで前記金属板8
の外周部を挟持している。9b is attached to the holder 34 via an annular metal plate 8 attached to both sides. 35 is a ring that is screwed into the outer periphery of the movable side holder 30;
The inner periphery of the metal plate 8 is held between the movable holder 30 and the movable holder 30 . 36 is a ring that is screwed into the inner circumferential portion of the holder 34, and the ring 36 and the holder 34 connect the metal plate 8.
The outer periphery of the
組み立ての手順は、第1図と第5図に示すように可動側
ホルダー30の固体撮像素子7の取り付は側から光学フ
ィルタ6を第1の収容部(a)に挿入し、次いで第1の
収容部(a)と第2の収容部(b)との接続箇所の段部
37に環状のゴムバッキング38を載置する。As shown in FIGS. 1 and 5, the assembly procedure is to install the solid-state image sensor 7 of the movable holder 30 by inserting the optical filter 6 into the first housing part (a) from the side, and then inserting the optical filter 6 into the first housing part (a). An annular rubber backing 38 is placed on the stepped portion 37 at the connection point between the accommodating portion (a) and the second accommodating portion (b).
ここで、第1の収容部(、)の光軸(A)の方向の深さ
Llは光学フィルタ6の厚さL2よりもわずか浅く、第
2の収容部(b)の光軸(A)の方向の深さり、はゴム
バッキング38の組み上り前の厚みL4よりも浅く形成
されている。Here, the depth Ll of the first housing part (,) in the optical axis (A) direction is slightly shallower than the thickness L2 of the optical filter 6, and the optical axis (A) of the second housing part (b) is slightly shallower than the thickness L2 of the optical filter 6. The depth in the direction of is formed to be shallower than the thickness L4 of the rubber backing 38 before assembly.
以上のように光学フィルタ6とゴムバッキング38とが
入れられた貫通孔32の第3の収容部(c)に固体撮像
素子7の端面39の部分を挿入して、固体撮像素子7の
接続ピン40とこの接続ピン40に半田付けされたプリ
ント配線板41とで挟持されて固体撮像素子7の放熱器
としても作用する押え板42を、ビス31a、 31b
で可動側ホルダー30の端面に取り付けると、固体撮像
素子7の端面39でゴムバッキング38が段部37と光
学フィルタ6とに押し付けられて弾性変形し、光学フィ
ルタ6はゴムバッキング38を介して可動側ホルダー3
0の環状の突部33と固体撮像素子7の端面39とで隙
間なく挟持される。As described above, the end surface 39 of the solid-state image sensor 7 is inserted into the third accommodating part (c) of the through hole 32 into which the optical filter 6 and the rubber backing 38 are inserted, and the connection pin of the solid-state image sensor 7 is inserted. 40 and the printed wiring board 41 soldered to the connecting pins 40, the holding plate 42, which also acts as a heat sink for the solid-state image sensor 7, is fixed by screws 31a and 31b.
When attached to the end face of the movable side holder 30, the rubber backing 38 is pressed against the step portion 37 and the optical filter 6 by the end face 39 of the solid-state image sensor 7 and is elastically deformed, and the optical filter 6 is movable via the rubber backing 38. side holder 3
The annular protrusion 33 of 0 and the end surface 39 of the solid-state image sensor 7 are sandwiched without any gap.
このように構成したため、固体撮像素子7を可動側ホル
ダー30にビス31a、 31bで取り付けるだけで、
可動側ホルダー30における光学フィルタ6の姿勢が安
定に保持され、圧電素子9a、9bの駆動によって固体
撮像素子7と光学フィルタ6とが一体に光軸(A)の方
向に振動する。With this configuration, simply attaching the solid-state image sensor 7 to the movable holder 30 with the screws 31a and 31b is enough.
The posture of the optical filter 6 in the movable holder 30 is held stably, and the solid-state image sensor 7 and the optical filter 6 vibrate together in the direction of the optical axis (A) by driving the piezoelectric elements 9a and 9b.
上記の実施例では光学フィルタ6と固体撮像素子7を撮
影レンズ系4の光軸(A)の方向に振動させる振動装置
43として、金属板8と圧電素子9a。In the above embodiment, the metal plate 8 and the piezoelectric element 9a are used as the vibration device 43 that vibrates the optical filter 6 and the solid-state image sensor 7 in the direction of the optical axis (A) of the photographic lens system 4.
9bとから構成したものを例に挙げて説明したが、振動
装ffi!43としては磁性体の板とこれに向かい合っ
たコイルとの組み合せで、磁性体の板とコイルの一方を
撮像素子と光学フィルタに結合した構成や、永久磁石と
コイルとの組み合せで、永久磁石とコイルの一方を撮像
素子と光学フィルタに結合した構成のものでも同様に使
用できる。9b was used as an example, but the vibration device ffi! 43 is a combination of a magnetic plate and a coil facing it, with one of the magnetic plate and coil coupled to an image sensor and an optical filter, and a combination of a permanent magnet and a coil. A structure in which one side of the coil is coupled to an image sensor and an optical filter can also be used in the same way.
発明の効果
以上のように本発明によれば、光学フィルタと固体撮像
素子とを一体に設け、この光学フィルタと固体撮像素子
を振動装置によって撮影レンズ系の光軸方向に振動させ
るため、光学フィルタと固体撮像素子を十分に近づけて
も固体撮像素子の正常な振動を妨げるようなことがなく
、固体撮像素子の結像面の近傍位置に光学フィルタを配
置できるため、従来のように光学フィルタを固定側とし
固体撮像素子を振動する可動側としたものに比べて、小
さな光学フィルタで同様の機能を得ることができ、ビデ
オカメラなどの小型化と軽量化に寄与できる。Effects of the Invention As described above, according to the present invention, an optical filter and a solid-state image sensor are provided integrally, and the optical filter and solid-state image sensor are vibrated in the optical axis direction of the photographing lens system by a vibration device. Even if the solid-state image sensor is brought close enough to the solid-state image sensor, normal vibration of the solid-state image sensor will not be disturbed, and the optical filter can be placed close to the imaging plane of the solid-state image sensor. Compared to a fixed side and a movable side that vibrates the solid-state image sensor, the same function can be obtained with a smaller optical filter, contributing to the miniaturization and weight reduction of video cameras and the like.
さらに、固体撮像素子の端面と可動側ホルダーの突部と
で光学フィルタを挟持しているため、可動側ホルダーに
固体撮像素子を固定するだけの少ない工数で、固体撮像
素子と光学フィルタとを一体に保持できるものである。Furthermore, since the optical filter is sandwiched between the end face of the solid-state image sensor and the protrusion of the movable holder, the solid-state image sensor and the optical filter can be integrated into a single unit with a small amount of man-hours required for fixing the solid-state image sensor to the movable holder. It is something that can be maintained.
第1図は本発明の自動焦点調節装置の一実施例の固体撮
像素子の取り付は部分の組み立て途中の縦断面図、第2
図は第1図におけるホルダーを固体撮像素子の取り付は
側から見た拡大平面図、第3図は第2図のx−x ’線
に沿う断面図、第4図は第1図におけるホルダーを被写
体側から見た拡大平面図、第5図は光学フィルタと固体
撮像素子との一体部分の分解斜視図、第6図は光路長変
動用レンズを振動させて光路長を変動させる従来の自動
焦点調節装置の構成図、第7図は固体撮像素子を振動さ
せて光路長を変動させる従来の自動焦点調節装置の構成
図、第8図は第7図における固体撮像素子の取り付は部
分の縦断面図、第9図は第8図の光学フィルタを固体撮
像素子の側に近づけた場合の縦断面図、第10図は光学
フィルタと固体撮像素子とを一体に保持する従来例の縦
断面図である。
4・・・撮影レンズ系、6・・・光学フィルタ、7・・
・固体撮像素子、30・・・可動側ホルダー、 31a
、 31b・・・ビス、32・・・貫通孔、33・・・
突部、34・・・ホルダー、37・・・段部、38・・
・ゴムバッキング〔環状弾性体〕、39・・・固体撮像
素子7の端面、42・・・押え板、43・・・振動装!
、(A)・・・光軸、(a)・・・第1の収容部、(b
)・・・第2の収容部、(c)・・・第3の収容部。
代理人 森 本 義 弘
第4図
第3図 第2図
第8図
第デ図FIG. 1 is a vertical cross-sectional view showing the installation of a solid-state image sensor in an embodiment of the automatic focusing device of the present invention, while the parts are being assembled;
The figure shows an enlarged plan view of the holder shown in Fig. 1 with the solid-state image sensing device mounted from the side, Fig. 3 is a sectional view taken along line x-x' in Fig. 2, and Fig. 4 shows the holder shown in Fig. 1. Fig. 5 is an exploded perspective view of the integral part of the optical filter and solid-state image sensor, and Fig. 6 is a conventional automatic method that changes the optical path length by vibrating the lens for changing the optical path length. A configuration diagram of a focus adjustment device, FIG. 7 is a configuration diagram of a conventional automatic focus adjustment device that vibrates a solid-state image sensor to vary the optical path length, and FIG. 9 is a vertical sectional view when the optical filter shown in FIG. 8 is brought close to the solid-state image sensor, and FIG. 10 is a vertical sectional view of a conventional example in which the optical filter and the solid-state image sensor are held together. It is a diagram. 4...Photographing lens system, 6...Optical filter, 7...
・Solid-state image sensor, 30...Movable side holder, 31a
, 31b...screw, 32...through hole, 33...
Projection, 34...Holder, 37...Step, 38...
・Rubber backing [annular elastic body], 39... End face of solid-state image sensor 7, 42... Holding plate, 43... Vibration device!
, (A)... Optical axis, (a)... First housing part, (b
)...Second accommodating part, (c)...Third accommodating part. Agent Yoshihiro Morimoto Figure 4 Figure 3 Figure 2 Figure 8 Figure D
Claims (1)
フィルタを前記固体撮像素子と一体に保持し、この光学
フィルタと固体撮像素子を電気信号で前記撮影レンズ系
の光軸方向に振動させる振動装置を設け、固体撮像素子
の出力信号により焦点のずれを検出し前記撮影レンズ系
のレンズを移動させて焦点を合わせるように構成し、か
つ前記固体撮像素子と光学フィルタとを一体に保持する
部分を、前記光軸方向の貫通孔が形成された可動側ホル
ダーを設け、この可動側ホルダーの貫通孔の一端側に内
方に向かって形成された突部の上に前記光学フィルタを
載置し、前記貫通孔の他端側の開口部に取り付けられる
前記固体撮像素子の端面と前記光学フィルタとの間に環
状の弾性体を介装して、固体撮像素子の端面と可動側ホ
ルダーの前記突部とで前記光学フィルタを挟持するよう
に構成した自動焦点調節装置。1. An optical filter disposed between the photographic lens system and the solid-state image sensor is held integrally with the solid-state image sensor, and the optical filter and the solid-state image sensor are vibrated in the optical axis direction of the photographic lens system using an electrical signal. a vibrating device configured to detect a focus shift based on an output signal of a solid-state image sensor and move a lens of the photographing lens system to focus the image, and hold the solid-state image sensor and the optical filter together. A movable holder is provided in which a through hole in the optical axis direction is formed, and the optical filter is mounted on a protrusion formed inward at one end of the through hole of the movable holder. and an annular elastic body is interposed between the end face of the solid-state image sensor attached to the opening on the other end side of the through hole and the optical filter, so that the end face of the solid-state image sensor and the movable holder are An automatic focusing device configured to sandwich the optical filter with the protrusion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61224104A JPH0629894B2 (en) | 1986-09-22 | 1986-09-22 | Automatic focus adjustment device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61224104A JPH0629894B2 (en) | 1986-09-22 | 1986-09-22 | Automatic focus adjustment device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6378115A true JPS6378115A (en) | 1988-04-08 |
JPH0629894B2 JPH0629894B2 (en) | 1994-04-20 |
Family
ID=16808603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61224104A Expired - Lifetime JPH0629894B2 (en) | 1986-09-22 | 1986-09-22 | Automatic focus adjustment device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0629894B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007248642A (en) * | 2006-03-14 | 2007-09-27 | Sony Corp | Lens barrel and imaging device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5266421A (en) * | 1975-11-26 | 1977-06-01 | Rollei Werke Franke Heidecke | Photographic objective lens |
JPS60122912U (en) * | 1984-01-30 | 1985-08-19 | アルプス電気株式会社 | combination lens |
JPS6178161A (en) * | 1984-09-25 | 1986-04-21 | Matsushita Electric Ind Co Ltd | Color solid-state image pickup device |
JPS61116313A (en) * | 1984-11-12 | 1986-06-03 | Matsushita Electric Ind Co Ltd | Automatic focus detector |
JPS61120378A (en) * | 1984-11-15 | 1986-06-07 | Sony Corp | Reproducing device |
-
1986
- 1986-09-22 JP JP61224104A patent/JPH0629894B2/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5266421A (en) * | 1975-11-26 | 1977-06-01 | Rollei Werke Franke Heidecke | Photographic objective lens |
JPS60122912U (en) * | 1984-01-30 | 1985-08-19 | アルプス電気株式会社 | combination lens |
JPS6178161A (en) * | 1984-09-25 | 1986-04-21 | Matsushita Electric Ind Co Ltd | Color solid-state image pickup device |
JPS61116313A (en) * | 1984-11-12 | 1986-06-03 | Matsushita Electric Ind Co Ltd | Automatic focus detector |
JPS61120378A (en) * | 1984-11-15 | 1986-06-07 | Sony Corp | Reproducing device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007248642A (en) * | 2006-03-14 | 2007-09-27 | Sony Corp | Lens barrel and imaging device |
Also Published As
Publication number | Publication date |
---|---|
JPH0629894B2 (en) | 1994-04-20 |
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