JPH05173225A - Automatic focusing type single-lens reflex camera - Google Patents

Automatic focusing type single-lens reflex camera

Info

Publication number
JPH05173225A
JPH05173225A JP34283891A JP34283891A JPH05173225A JP H05173225 A JPH05173225 A JP H05173225A JP 34283891 A JP34283891 A JP 34283891A JP 34283891 A JP34283891 A JP 34283891A JP H05173225 A JPH05173225 A JP H05173225A
Authority
JP
Japan
Prior art keywords
lens
reflex camera
automatic focusing
camera
lens reflex
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.)
Pending
Application number
JP34283891A
Other languages
Japanese (ja)
Inventor
Masaru Yamamoto
勝 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
Original Assignee
Kyocera Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to JP34283891A priority Critical patent/JPH05173225A/en
Publication of JPH05173225A publication Critical patent/JPH05173225A/en
Pending legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Lens Barrels (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

PURPOSE:To provide a single-lens reflex camera capable of actuating the automatic focusing function irrespective of the lens type so long as the lens can be mounted on a lens mount directly or through a conversion ring. CONSTITUTION:An automatic focusing single-lens reflex camera of photographing lens changing type consists of a front part block (A) provided with at least a lens mount 1 for mounting a photographing lens and a grip 2 to hold a camera having an AF driving source for auto-focusing and a release button 22, and a rear part block (B) provided with a distance-measuring mechanism and a finder mechanism and a film feeding and holding mechanism 5, and automatic focusing adjustment is realized by making mutual movement of the front part block (A) and the rear part block (B) in the optical axis direction of the photographing lens.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、撮影レンズ交換式オー
トフォーカス一眼レフカメラに関し、特にバックフォー
カス調整方式のオートフォーカス一眼レフカメラに関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an autofocus single-lens reflex camera with interchangeable photographing lenses, and more particularly to an autofocus single-lens reflex camera of a back focus adjustment type.

【0002】[0002]

【従来技術及びその課題】カメラの焦点調節方式には、
撮影レンズの焦点距離調節する方式と、フィルムを撮影
レンズの光軸方向に移動させる方式とがあるが、殆どの
カメラは前者の方式を採用しており、撮影レンズ交換式
オートフォーカス一眼レフカメラにおいては、前者の方
式のうち、カメラ本体内で焦点検出し、機械的カプラに
より本体からレンズ鏡筒に駆動力を伝達してレンズの焦
点距離を調節する方式と、本体からレンズ鏡筒に電気信
号を伝達して鏡筒内の駆動力によりレンズの焦点距離を
調節する方式とがある。これらのオートフォーカス一眼
レフカメラにおいては、いずれも従来のマニュアルフォ
ーカスレンズや方式の異なるオートフォーカスレンズが
装着出来ないか、もしくは装着出来てもオートフォーカ
ス機能が作動出来ない問題があり、かつ標準レンズより
かなり大型のレンズを装着した場合には本体からの駆動
力ではパワー不足でレンズ鏡筒内のレンズの焦点距離を
調節することが出来ない等の問題がある。
2. Description of the Related Art The focus adjustment system of a camera is
There is a method of adjusting the focal length of the taking lens and a method of moving the film in the optical axis direction of the taking lens, but most cameras use the former method, and in the taking lens interchangeable autofocus single lens reflex camera Among the former methods, the focus detection is performed in the camera body and the mechanical coupler transmits the driving force from the body to the lens barrel to adjust the focal length of the lens. Is transmitted to adjust the focal length of the lens by the driving force in the lens barrel. In these autofocus single-lens reflex cameras, there is a problem that the conventional manual focus lens or the autofocus lens of a different system cannot be mounted, or the autofocus function cannot operate even if they are mounted, and more than the standard lens. When a considerably large lens is attached, there is a problem that the focal length of the lens in the lens barrel cannot be adjusted due to insufficient power with the driving force from the main body.

【0003】[0003]

【課題を解決するための手段】本発明は、直接もしくは
コンバージョンリングを介してレンズマウントに装着出
来さえすれば、どのようなレンズであってもオートフォ
ーカス機能が作動出来るカメラを実現することを目的と
し、撮影レンズ交換式オートフォーカス一眼レフカメラ
であって、少なくとも、撮影レンズ装着用のレンズマウ
ントと、オートフォーカス用のAF駆動源とレリーズボ
タンを有するカメラ保持用のグリップとを備える前部ブ
ロックと、測距機構と、ファインダ機構と、フィルム給
送保持機構とを備える後部ブロックとから構成され、前
部ブロックと後部ブロックとを撮影レンズ光軸方向に相
互移動させることにより焦点調節することを特徴とする
オートフォーカス一眼レフカメラである。
SUMMARY OF THE INVENTION It is an object of the present invention to realize a camera capable of operating an autofocus function for any lens as long as it can be mounted on a lens mount directly or through a conversion ring. A photographing lens interchangeable autofocus single-lens reflex camera, at least a front block including a lens mount for mounting the photographing lens, an AF drive source for autofocus, and a camera holding grip having a release button, , A distance measuring mechanism, a finder mechanism, and a rear block having a film feeding and holding mechanism, and the front block and the rear block are mutually moved in the optical axis direction of the photographing lens to adjust the focus. It is an autofocus single lens reflex camera.

【0004】[0004]

【実施例】以下図面を用いて本発明の実施例を説明す
る。図1と図2は本発明の実施例の構成の概略図であ
り、図において同じ部材は同じ符号で示し、1は撮影レ
ンズ鏡筒Cを装着するレンズマウントであり、コンバー
ジョンマウントを仲介させることによりマウントの異な
るレンズを装着することも出来る。2は自動焦点調節用
のAFモータ2a、ギア列2b、電池2c等からなるオ
ートフォーカス用のAF駆動源21とレリーズボタン2
2を有するカメラ保持用のグリップであり、これら1と
2によって前部ブロックAを構成する。3はAFミラー
3a、AFレンズ3b、AFセンサ3c、AF測距演算
回路3d、AFドライバ回路3e等からなる測距機構、
4はファインダ機構、5はフィルム給送保持機構であ
り、これら3ないし5によって後部ブロックBを構成す
る。6は前部ブロックAと後部ブロックBとを撮影レン
ズ光軸方向に相互移動させることにより焦点調節するA
F調整機構である。7はブロックAとBの相互移動に伴
う漏光を防止するための遮光用の蛇腹であるが、後部ブ
ロックBをカメラ暗箱内に封入配設すれば特に必要とし
ない。
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are schematic views of the configuration of an embodiment of the present invention. In the drawings, the same members are designated by the same reference numerals, and 1 is a lens mount for mounting the taking lens barrel C, and mediates the conversion mount. You can also attach lenses with different mounts. Reference numeral 2 denotes an autofocus AF drive source 21 including an AF motor 2a for automatic focus adjustment, a gear train 2b, a battery 2c, and a release button 2.
It is a grip for holding a camera having 2, and these 1 and 2 form a front block A. Reference numeral 3 denotes a distance measuring mechanism including an AF mirror 3a, an AF lens 3b, an AF sensor 3c, an AF distance calculating circuit 3d, an AF driver circuit 3e, and the like.
Reference numeral 4 is a finder mechanism, and 5 is a film feeding and holding mechanism, and these 3 to 5 form a rear block B. Reference numeral 6 indicates a focus adjustment A by moving the front block A and the rear block B relative to each other in the optical axis direction of the photographing lens.
It is an F adjustment mechanism. Reference numeral 7 is a bellows for light shielding for preventing light leakage due to the mutual movement of the blocks A and B, but it is not particularly required if the rear block B is enclosed and arranged in the camera dark box.

【0005】つぎに、このような構成における動作につ
いて説明する。いま、撮影レンズ鏡筒Cを前部ブロック
Aのレンズマウント1に装着し、測距機構3の出力によ
りAF駆動源21を駆動し、AF調整機構6を作動させ
て後部ブロックBを撮影レンズ光軸方向に移動させるこ
とにより焦点調節する。
Next, the operation in such a configuration will be described. Now, the photographing lens barrel C is mounted on the lens mount 1 of the front block A, the AF drive source 21 is driven by the output of the distance measuring mechanism 3, and the AF adjusting mechanism 6 is operated to move the rear block B to the photographing lens light. The focus is adjusted by moving in the axial direction.

【0006】なお、本発明の構成を改良して、フィルム
保持機構だけをAF測距演算回路の出力に応じて移動す
ることにより焦点調節することも出来るし、フィルム面
とAFセンサ面とファインダ面とが光学的に共役の位置
関係になるように連動させることにより、最小限の部材
を移動させるだけで、測距を繰り返すと共にファインダ
で視認しながら自動および手動焦点調節するようにさせ
ることも出来る。
It should be noted that the structure of the present invention is improved so that the focus can be adjusted by moving only the film holding mechanism in accordance with the output of the AF distance calculation circuit, and the film surface, the AF sensor surface and the viewfinder surface. By linking and so that they have an optically conjugate positional relationship, it is possible to repeat the distance measurement and automatically and manually adjust the focus while visually observing with the viewfinder, by moving the minimum member. .

【0007】[0007]

【発明の効果】以上説明したように本発明の構成によれ
ば、従来のマニュアルフォーカスレンズや方式の異なる
オートフォーカスレンズであってもオートフォーカス機
能が作動出来、かつ装着するレンズの大きさに関係なく
焦点距離を調節することが出来る。
As described above, according to the configuration of the present invention, even if the conventional manual focus lens or the auto focus lens of a different system is used, the auto focus function can be activated and the size of the lens to be mounted is related. You can adjust the focal length without.

【図面の簡単な説明】[Brief description of drawings]

図1と図2は本発明の実施例を示す。 1 and 2 show an embodiment of the present invention.

【図1】本発明カメラの側面内部構造を示すと共に回路
ブロックを示す略図。
FIG. 1 is a schematic view showing a side internal structure of a camera of the present invention and a circuit block.

【図2】本発明カメラの平面内部構造を示す略図。FIG. 2 is a schematic diagram showing a planar internal structure of the camera of the present invention.

【符号の説明】[Explanation of symbols]

A 前部ブロック B 後部ブロック C 撮影レンズ鏡筒 1 レンズマウント 2 グリップ 3 測距機構 4 ファインダ機構 5 フィルム給送保持機構 6 AF調整機構 7 蛇腹 A front block B rear block C shooting lens barrel 1 lens mount 2 grip 3 distance measuring mechanism 4 viewfinder mechanism 5 film feeding and holding mechanism 6 AF adjustment mechanism 7 bellows

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 G03B 3/04 13/32 17/14 7348−2K 7811−2K G03B 3/04 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Office reference number FI technical display location G03B 3/04 13/32 17/14 7348-2K 7811-2K G03B 3/04

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】撮影レンズ交換式オートフォーカス一眼レ
フカメラにおいて、少なくとも、撮影レンズ装着用のレ
ンズマウントと、オートフォーカス用のAF駆動源とレ
リーズボタンを有するカメラ保持用のグリップとを備え
る前部ブロックと、測距機構と、ファインダ機構と、フ
ィルム給送保持機構とを備える後部ブロックとから構成
され、前部ブロックと後部ブロックとを撮影レンズ光軸
方向に相互移動させることにより焦点調節することを特
徴とするオートフォーカス一眼レフカメラ。
1. An autofocus single-lens reflex camera with an interchangeable photographic lens, which comprises at least a lens mount for mounting a photographic lens, an AF drive source for autofocus, and a camera holding grip having a release button. And a distance measuring mechanism, a finder mechanism, and a rear block including a film feeding and holding mechanism.The front block and the rear block are moved relative to each other in the photographing lens optical axis direction to adjust the focus. A featured autofocus single-lens reflex camera.
JP34283891A 1991-12-25 1991-12-25 Automatic focusing type single-lens reflex camera Pending JPH05173225A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34283891A JPH05173225A (en) 1991-12-25 1991-12-25 Automatic focusing type single-lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34283891A JPH05173225A (en) 1991-12-25 1991-12-25 Automatic focusing type single-lens reflex camera

Publications (1)

Publication Number Publication Date
JPH05173225A true JPH05173225A (en) 1993-07-13

Family

ID=18356887

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34283891A Pending JPH05173225A (en) 1991-12-25 1991-12-25 Automatic focusing type single-lens reflex camera

Country Status (1)

Country Link
JP (1) JPH05173225A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5539491A (en) * 1993-06-15 1996-07-23 Kyocera Corporation Back-driven type autofocus camera
US5583602A (en) * 1994-04-07 1996-12-10 Kyocera Corporation Autofocus single-lens reflex camera
US5598245A (en) * 1993-08-11 1997-01-28 Kyocera Corporation Flange back mechanism for photographic camera
CN102043226A (en) * 2009-10-20 2011-05-04 思考电机(上海)有限公司 Lens driving device, automatic focusing camera function unit and mobile phone

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5539491A (en) * 1993-06-15 1996-07-23 Kyocera Corporation Back-driven type autofocus camera
US5598245A (en) * 1993-08-11 1997-01-28 Kyocera Corporation Flange back mechanism for photographic camera
US5583602A (en) * 1994-04-07 1996-12-10 Kyocera Corporation Autofocus single-lens reflex camera
CN102043226A (en) * 2009-10-20 2011-05-04 思考电机(上海)有限公司 Lens driving device, automatic focusing camera function unit and mobile phone

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