JPS60118112U - Optical system of focus detection device of single-lens reflex camera - Google Patents
Optical system of focus detection device of single-lens reflex cameraInfo
- Publication number
- JPS60118112U JPS60118112U JP568084U JP568084U JPS60118112U JP S60118112 U JPS60118112 U JP S60118112U JP 568084 U JP568084 U JP 568084U JP 568084 U JP568084 U JP 568084U JP S60118112 U JPS60118112 U JP S60118112U
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- mirror
- camera
- focus detection
- sensor
- 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
Links
Landscapes
- Cameras In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図ａ、 ｂ、 ｃはＴＴＬ型瞳型側分割方式点検出
装置の原理を示す図、第２図は本考案の実施例を示す斜
視図、第３図は第１図をカメラ前側から見た正面図であ
る。
１・・・撮影レンズ、２・・・クイックリターンミラ
。
−１２ａ・・・ハーフミラ−１３・・・ピント板、４・
・・ペンタダハプリズム、５・・・小ミラー、６・・・
フィールドレンズ、７，８・・・ミラー、９・・・スプ
リットイメージプリズム、１０・・・二次結像レンズ、
１１ａ。
１１ｂ・・・センサ。Figures 1 a, b, and c are diagrams showing the principle of a TTL type pupil type side-split point detection device, Figure 2 is a perspective view showing an embodiment of the present invention, and Figure 3 is a view of Figure 1 from the front side of the camera. It is a front view. 1... Photography lens, 2... Quick return mirror
. -12a...Half mirror-13...Focusing board, 4.
...Penta roof prism, 5...Small mirror, 6...
Field lens, 7, 8...Mirror, 9...Split image prism, 10...Secondary imaging lens,
11a. 11b...Sensor.
Claims (3)
ダー系に導くクイックリターンミラーの一部をハーフミ
ラ−化し、該ハーフミラ−を通過した該光束を該ハーフ
ミラ−の直後に配置された小ミラーによりカメラ底部に
導き、この導かれた光束を瞳分割して二次結像レンズに
より二つのセンサーに結像させ、両センサー上の結像位
置の相対変化により焦点検出を行なう一眼レフレックス
カメラの焦点検出装置の光学系であって、前記センサを
カメラの上部に配置し、前記小ミラーからの反射光束を
カメラの底部に設けたミラーにより画面長辺方向に反射
した後、カメラ底部に設けた他のミラーにより更に上記
センサーの方へ反射することを特徴とする光学系。(1) Part of the quick return mirror that guides the imaging light flux formed by the photographic lens to the finder system is made into a half mirror, and the light flux that has passed through the half mirror is transferred to the camera using a small mirror placed immediately after the half mirror. Focus detection for a single-lens reflex camera where the guided light beam is divided into pupils and imaged onto two sensors using a secondary imaging lens, and focus detection is performed by relative changes in the imaging position on both sensors. The optical system of the device is such that the sensor is arranged at the top of the camera, and after the reflected light flux from the small mirror is reflected in the long side direction of the screen by the mirror provided at the bottom of the camera, the sensor is arranged at the top of the camera. An optical system characterized by further reflecting the light toward the sensor using a mirror.
ムによって行なう実用新案登録請求の範囲第１項の光学
系。(2). The optical system according to claim 1, wherein the pupil division of the light beam is performed by a split image prism.
行なう実用新案登録請求の範囲第１項の光学系。(3) The optical system according to claim 1, wherein the pupil division of the light beam is performed by a pair of secondary imaging lenses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP568084U JPS60118112U (en) | 1984-01-19 | 1984-01-19 | Optical system of focus detection device of single-lens reflex camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP568084U JPS60118112U (en) | 1984-01-19 | 1984-01-19 | Optical system of focus detection device of single-lens reflex camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60118112U true JPS60118112U (en) | 1985-08-09 |
Family
ID=30482406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP568084U Pending JPS60118112U (en) | 1984-01-19 | 1984-01-19 | Optical system of focus detection device of single-lens reflex camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60118112U (en) |
-
1984
- 1984-01-19 JP JP568084U patent/JPS60118112U/en active Pending
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