JPH03138627A - Autofocusing device - Google Patents
Autofocusing deviceInfo
- Publication number
- JPH03138627A JPH03138627A JP27797689A JP27797689A JPH03138627A JP H03138627 A JPH03138627 A JP H03138627A JP 27797689 A JP27797689 A JP 27797689A JP 27797689 A JP27797689 A JP 27797689A JP H03138627 A JPH03138627 A JP H03138627A
- Authority
- JP
- Japan
- Prior art keywords
- light
- lens
- light emitting
- light receiving
- substrate
- 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
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、ビデオカメラまたはスチールカメラ等のオー
トフォーカス装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an autofocus device for a video camera, a still camera, or the like.
（従来の技術）
従来、オートフォーカス装置において、とくに赤外線等
の発光・受光を用いたものの場合、第２図に示すように
、メイン基板１のほかに、発光素子２を設けた基板３お
よび受光素子４を設けた基板５を有し、メイン基板１に
基板３．５をリード線６．７によりそれぞれ接続し、オ
ートフォーカス回路を形成し、さらに、基板３．５をメ
イン基板１に対して直交状に、かつ、発光レンズ８およ
び受光レンズ９に平行に配置している。(Prior Art) Conventionally, in an autofocus device that uses emitting and receiving light such as infrared rays, in addition to a main board 1, a board 3 provided with a light emitting element 2 and a light receiving device are used, as shown in FIG. It has a substrate 5 on which an element 4 is provided, and the substrate 3.5 is connected to the main substrate 1 by lead wires 6.7 to form an autofocus circuit, and the substrate 3.5 is connected to the main substrate 1. They are arranged orthogonally and parallel to the light emitting lens 8 and the light receiving lens 9.
すなわち、−膜内に、ビデオカメラ等のオートフォーカ
ス装置におけるメイン基板１は、コンパクト化等の必要
性から、撮影光軸と平行に配置し、また、発光素子２お
よび受光素子４を設けた基板３，５は、発光レンズ８お
よび受光レンズ９と平行に配置して、三角測量に基づく
測距を行なうため、メイン基板１と基板３．５とを別個
に形成し、これらを直交して配置している。That is, in the film, the main substrate 1 of an autofocus device such as a video camera is arranged parallel to the photographing optical axis due to the need for compactness, etc., and a substrate on which a light emitting element 2 and a light receiving element 4 are provided. 3 and 5 are arranged in parallel with the light emitting lens 8 and the light receiving lens 9 to perform distance measurement based on triangulation, so the main board 1 and the board 3.5 are formed separately and are arranged orthogonally. are doing.
（発明が解決しようとする課題）
上記のように、従来の装置においては、基板が３枚構成
、少なくとも２枚構成となり、これらの結線作業が必要
となり、組立作業性が悪くコストアップともなる。(Problems to be Solved by the Invention) As described above, in the conventional device, the number of boards is three or at least two, and wiring work is required for these boards, resulting in poor assembly workability and increased costs.
本発明は、このような点を解決しようとするもので、基
板を１枚構成とし、コンパクト化を損なうことなく、組
立作業性を向上してコストダウンを図ると共に、信頼性
を向上することを目的とするものである。The present invention aims to solve these problems, and aims to improve assembly work efficiency and reduce costs without sacrificing compactness by using a single board, and to improve reliability. This is the purpose.
（課題を解決するための手段）
本発明のオートフォーカス装置は、発光素子および受光
素子を有しオートフォーカス回路を形成した基板と、こ
の基板と交差する方向に上記発光素子および受光素子に
対応してそれぞれ設けられた発光レンズおよび受光レン
ズと、上記基板の発光素子および受光素子と上記発光レ
ンズおよび受光レンズとの間に配設された反射板とを備
えたものである。(Means for Solving the Problems) The autofocus device of the present invention includes a substrate having a light emitting element and a light receiving element and forming an autofocus circuit, and a substrate that corresponds to the light emitting element and the light receiving element in a direction intersecting this substrate. The light-emitting lens and the light-receiving lens are respectively provided on the substrate, and a reflecting plate is provided between the light-emitting element and the light-receiving element of the substrate and the light-emitting lens and the light-receiving lens.
（作用）
本発明では、発光素子からの発光光線は、反射板によっ
て方向転換し、発光レンズにより被写体に投光され、被
写体からの受光光線は、受光レンズを通って反射板によ
って方向転換され、受光素子により受光される。(Function) In the present invention, the light emitted from the light emitting element is redirected by the reflector and projected onto the subject by the light emitting lens, and the light ray received from the subject passes through the light receiving lens and is redirected by the reflector. The light is received by the light receiving element.
（実施例）
以下、本発明の一実施例′を第１図を参照して説明する
。(Embodiment) An embodiment of the present invention will be described below with reference to FIG.
第１図において、ｌｌはフレームで、このフレーム１１
の上部に基板１２が水平状に、すなわち、図示しない撮
影光軸と平行的に取付けられている。In FIG. 1, ll is a frame, and this frame 11
A substrate 12 is mounted horizontally, that is, parallel to a photographing optical axis (not shown).
この基板１２にはオートフォーカス回路が形成されてい
ると共に、前端部の両側に発光素子１３および受光素子
１４がそれぞれ設けられている。An autofocus circuit is formed on this substrate 12, and a light emitting element 13 and a light receiving element 14 are provided on both sides of the front end.
また、上記フレーム１１の前部両側に上記基板１２と直
交する方向に上記発光素子１３および受光素子１４に対
応して発光レンズ１５および受光レンズ■６がそれぞれ
取付けられている。Further, a light emitting lens 15 and a light receiving lens 6 are respectively attached to the front sides of the frame 11 in a direction orthogonal to the substrate 12 in correspondence with the light emitting element 13 and the light receiving element 14.
さらに、上記発光素子１３と発光レンズ１５との間、お
よび、受光素子１４と受光レンズ１６との間に反射板１
７が配設されている。なお、この反射板１７は一体に形
成するほか、別体に形成して並設してもよい。Further, a reflecting plate 1 is provided between the light emitting element 13 and the light emitting lens 15 and between the light receiving element 14 and the light receiving lens 16.
7 are arranged. Note that the reflecting plates 17 may be formed in one piece, or may be formed separately and arranged in parallel.
そして、発光素子１３からの発光光線は、反射板１７に
よって方向転換し、発光レンズ１５により被写体に投光
され、被写体からの受光光線は、受光レンズ１６を通っ
て反射板１７によって方向転換され、受光素子１４によ
り受光される。The light emitted from the light emitting element 13 is directed by the reflector 17 and projected onto the subject by the light emitting lens 15, and the light beam received from the subject passes through the light receiving lens 16 and is deflected by the reflector 17. The light is received by the light receiving element 14.
このようにすることにより、基板１２に発光素子１３お
よび受光素子１４が組込まれ、基板を１枚構成とするこ
とができ、リード線等の接続が不要となり、組立作業性
を向上してコストダウンを図ることができると共に、信
頼性を向上することができる。また、反射板１７を１枚
にすることが可能であり、信頼性をさらに向上すること
ができる。By doing this, the light-emitting element 13 and the light-receiving element 14 are incorporated into the substrate 12, making it possible to have a single substrate configuration, eliminating the need for connections such as lead wires, improving assembly work efficiency, and reducing costs. In addition, reliability can be improved. Further, it is possible to use only one reflecting plate 17, and reliability can be further improved.
また、反射板１７の位置により、発光レンズ１５および
受光レンズ１６の配置が自由に選べると共に、基板１２
の位置、すなわち、発光素子１３および受光素子１４の
位置をコンデンサレンズの焦点内において自由に配置す
ることができ、設計の自由度が向上する。Further, depending on the position of the reflection plate 17, the arrangement of the light-emitting lens 15 and the light-receiving lens 16 can be freely selected.
, that is, the positions of the light emitting element 13 and the light receiving element 14 can be freely arranged within the focus of the condenser lens, improving the degree of freedom in design.
また、発光素子１３の発光波長特性に合わせて、反射板
１７の波長特性を選ぶことにより、外乱光をカットし、
測距感度を上げることができる。In addition, by selecting the wavelength characteristics of the reflection plate 17 according to the emission wavelength characteristics of the light emitting element 13, disturbing light can be cut.
Distance sensitivity can be increased.
さらに、テレマクロ時の照射位置の補正が反射板１７で
可能である。そして、オートフォーカス作動部と基板１
２とを別部品に固定しやすいため、ストレス等による誤
動作を防止できる。Furthermore, the reflection plate 17 can correct the irradiation position during telemacro mode. Then, the autofocus operating section and the board 1
Since it is easy to fix 2 and 2 to separate parts, malfunctions due to stress etc. can be prevented.
本発明によれば、基板に発光素子および受光素子が組込
まれ、基板を１枚構成とすることができ、リード線等の
接続が不要となり、組立作業性を向上してコストダウン
を図ることができると共に、信頼性を向上することがで
きる。According to the present invention, the light-emitting element and the light-receiving element are incorporated into the board, making it possible to have a single board configuration, eliminating the need for connections such as lead wires, improving assembly workability, and reducing costs. At the same time, reliability can be improved.
また、反射板の位置により、発光レンズおよび受光レン
ズの配置が自由に選べると共に、基板の位置、すなわち
、発光素子および受光素子の位置を自由に配置すること
ができ、設計の自由度が向上する。Furthermore, depending on the position of the reflector plate, the arrangement of the light emitting lens and the light receiving lens can be freely selected, and the position of the substrate, that is, the position of the light emitting element and the light receiving element can be freely arranged, increasing the degree of freedom in design. .
また、発光素子の発光波長特性に合わせて、反射板の波
長特性を選ぶことにより、外乱光をカットし、測距感度
を上げることができる。Furthermore, by selecting the wavelength characteristics of the reflector in accordance with the emission wavelength characteristics of the light emitting element, it is possible to cut external light and increase distance measurement sensitivity.
第１図は本発明の装置の一実施例を示す斜視図、第２図
は従来の装置を示す斜視図である。
１２・・基板、１３・・発光素子、１４・・受光素子、
１５・・発光レンズ、１６・・受光レンズ、１７・・反
射板。FIG. 1 is a perspective view showing an embodiment of the device of the present invention, and FIG. 2 is a perspective view showing a conventional device. 12... Substrate, 13... Light emitting element, 14... Light receiving element,
15...Emitting lens, 16...Light receiving lens, 17...Reflecting plate.
Claims (1)
回路を形成した基板と、 この基板と交差する方向に上記発光素子および受光素子
に対応してそれぞれ設けられた発光レンズおよび受光レ
ンズと、 上記基板の発光素子および受光素子と上記発光レンズお
よび受光レンズとの間に配設された反射板と、 を備えたことを特徴とするオートフォーカス装置。(1) A substrate having a light-emitting element and a light-receiving element and forming an autofocus circuit; A light-emitting lens and a light-receiving lens respectively provided in a direction intersecting the substrate in correspondence with the light-emitting element and the light-receiving element; and the substrate. An autofocus device comprising: a light-emitting element and a light-receiving element; and a reflector disposed between the light-emitting lens and the light-receiving lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27797689A JP2775114B2 (en) | 1989-10-25 | 1989-10-25 | Auto focus device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27797689A JP2775114B2 (en) | 1989-10-25 | 1989-10-25 | Auto focus device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03138627A true JPH03138627A (en) | 1991-06-13 |
| JP2775114B2 JP2775114B2 (en) | 1998-07-16 |
Family
ID=17590892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27797689A Expired - Lifetime JP2775114B2 (en) | 1989-10-25 | 1989-10-25 | Auto focus device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2775114B2 (en) |
-
1989
- 1989-10-25 JP JP27797689A patent/JP2775114B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2775114B2 (en) | 1998-07-16 |
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