JP2775114B2 - Auto focus device - Google Patents
Auto focus deviceInfo
- Publication number
- JP2775114B2 JP2775114B2 JP27797689A JP27797689A JP2775114B2 JP 2775114 B2 JP2775114 B2 JP 2775114B2 JP 27797689 A JP27797689 A JP 27797689A JP 27797689 A JP27797689 A JP 27797689A JP 2775114 B2 JP2775114 B2 JP 2775114B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- substrate
- lens
- emitting element
- light emitting
- 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
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
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 such as a video camera or a still camera.
（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 the case of an auto-focusing device using emission and reception of infrared rays or the like, a substrate 3 provided with a light emitting element 2 in addition to the main substrate 1 as shown in FIG.
And a substrate 5 on which a light receiving element 4 is provided.
The substrates 3 and 5 are connected to the main substrate 1 by lead wires 6 and 7, respectively, to form an auto-focus circuit. They are arranged in parallel.
すなわち、一般的に、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 general, the main substrate 1 in an autofocus device such as a video camera is arranged in parallel with the photographing optical axis because of the necessity of downsizing and the like.
The substrates 3, 5 provided with the light receiving element 4 are arranged in parallel with the light emitting lens 8 and the light receiving lens 9, and the main substrate 1 and the substrates 3, 5 are formed separately for distance measurement based on triangulation. They are arranged orthogonally.
（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 apparatus, three substrates and at least two substrates are required, and these wiring operations are required, which leads to poor assembly workability and increased cost.
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 seeks to solve such a point,
With one board configuration, without compromising compactness,
It is an object of the present invention to improve assembling workability to reduce costs and improve reliability.
（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) An autofocus device according to the present invention includes: 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 provided respectively corresponding to the light-emitting element and the light-receiving element in a direction intersecting with the substrate; and a light-emitting lens and a light-receiving lens provided on the substrate between the light-emitting element and the light-receiving element. And a reflection plate.
（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、発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 turned by the reflector and is projected on the subject by the light emitting lens.
A light beam received from a subject passes through a light receiving lens, is redirected by a reflector, and is received by a light emitting 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、11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。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。In FIG. 1, reference numeral 11 denotes a frame on which a substrate 12 is mounted horizontally, that is, in parallel with a photographing optical axis (not shown). An autofocus circuit is formed on the 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16がそれぞれ取付けられ
ている。A light emitting lens 15 and a light receiving lens 16 are mounted on both sides of the front portion of the frame 11 in a direction perpendicular to the substrate 12 so as to correspond to the light emitting element 13 and the light receiving element 14, respectively.
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17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 reflection plate 17 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. The reflecting plate 17 may be formed integrally or may be formed separately and juxtaposed.
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。Then, the light emitted from the light emitting element 13 is turned by the reflector 17 and is projected on the subject by the light emitting lens 15, and the light received from the subject is turned by the reflector 17 through the light receiving lens 16, 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。In this way, the light-emitting element 13 and the light-receiving element 14 are incorporated into the substrate 12, so that a single substrate can be formed, connection of lead wires and the like becomes unnecessary, and assembling workability is improved and cost is reduced. And reliability can be improved. In addition, the number of the reflectors 17 can be reduced to one, and the 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。The position of the light-emitting lens 15 and the light-receiving lens 16 can be freely selected depending on the position of the reflection plate 17, and the position of the substrate 12, that is, the position of the light-emitting element 13 and the light-receiving element 14, can be freely positioned within the focal point of the condenser lens. And the degree of freedom in design is improved.
また、発光素子13の発光波長特性を合わせて、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 adjusting the emission wavelength characteristics of the light emitting element 13, the reflection plate
By selecting 17 wavelength characteristics, disturbance light can be cut and the distance measurement 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12
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 correction of the irradiation position at the time of tele macro can be performed by the reflection plate 17. Then, the auto focus operation part and the substrate 12
Is easily fixed to another part, so that malfunction due to stress or the like 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。ADVANTAGE OF THE INVENTION According to this invention, a light emitting element and a light receiving element are incorporated in a board | substrate, a board | substrate can be comprised as one sheet, connection of a lead wire etc. becomes unnecessary, and an assembling workability is improved and cost reduction is achieved. And 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。Further, the arrangement of the light-emitting lens and the light-receiving lens can be freely selected depending on the position of the reflection plate, and the position of the substrate, that is, the position of the light-emitting element and the light-receiving element can be freely arranged, thereby improving 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。Further, by selecting the wavelength characteristic of the reflector in accordance with the emission wavelength characteristic of the light emitting element, disturbance light can be cut and the distance measurement sensitivity can be increased.
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 apparatus of the present invention, and FIG. 2 is a perspective view showing a conventional apparatus. 12 ... substrate, 13 ... light emitting element, 14 ... light receiving element, 15 ...
Light-emitting lens, 16: Light-receiving lens, 17: Reflector.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) G02B 7/11──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) G02B 7/11
Claims (1)
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、 を備えたことを特徴とするオートフォーカス装置。A substrate having an autofocus circuit having a light emitting element and a light receiving element, a light emitting lens and a light receiving lens provided in a direction intersecting the substrate so as to correspond to the light emitting element and the light receiving element, respectively; An autofocus device, comprising: a light-emitting element and a light-receiving element on the substrate; 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 JPH03138627A (en) | 1991-06-13 |
| JP2775114B2 true 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 |
|---|---|
| JPH03138627A (en) | 1991-06-13 |
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