JPS5886625U - Optical system of single-lens reflex camera - Google Patents
Optical system of single-lens reflex cameraInfo
- Publication number
- JPS5886625U JPS5886625U JP1981182778U JP18277881U JPS5886625U JP S5886625 U JPS5886625 U JP S5886625U JP 1981182778 U JP1981182778 U JP 1981182778U JP 18277881 U JP18277881 U JP 18277881U JP S5886625 U JPS5886625 U JP S5886625U
- Authority
- JP
- Japan
- Prior art keywords
- light
- splitter
- lens reflex
- optical system
- camera
- 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
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図は本考案の一実施例の光学系の概略図、第２図は
本考案の他の実施例の光学系の概略図である。
図中、１は撮影レンズ、２は光分割器、３は補助ミラー
、４は焦点検出器、５はピント板、６はペンタダハプリ
ズム、７は測光用の受光素子、８は接眼レンズ、９はシ
ャッター膜、１０は撮影フィルム、１１は透明平板、ｌ
ｉａは半透過部である。FIG. 1 is a schematic diagram of an optical system according to one embodiment of the present invention, and FIG. 2 is a schematic diagram of an optical system according to another embodiment of the present invention. In the figure, 1 is a photographic lens, 2 is a light splitter, 3 is an auxiliary mirror, 4 is a focus detector, 5 is a focusing plate, 6 is a penta roof prism, 7 is a light receiving element for photometry, 8 is an eyepiece lens, and 9 is a Shutter film, 10 is photographic film, 11 is transparent flat plate, l
ia is a semi-transparent part.
Claims (2)
一眼レフレックスカメラにおいて、 撮影レンズとフィルム面の間に撮影レンズを通過した光
束をファインダー観察光と撮影光とに分割する固定の光
分割器と該光分割器の背後に前記撮影光をカメラの下方
に反射させる回動可能な補助ミラーを設け、 前記補助ミラーにより反射された光束を焦点検出器に導
いて焦点検出するとともに前些光分割器で反射されたフ
ァインダー観察光の一部を前記光分割器により上方に配
置した受光素子に導き前記補助ミラーが撮影光束中より
退避すると共にストロボ光の調光を始動させたことを特
徴とした一眼レフレックスカメラの光学系。(1) In single-lens reflex cameras that are capable of automatic focus detection and TTL strobe light control, there is a fixed light division between the photographic lens and the film surface that divides the light flux that passes through the photographic lens into viewfinder observation light and photographic light. A rotatable auxiliary mirror is provided behind the camera and the light splitter to reflect the photographing light downward of the camera, and the light beam reflected by the auxiliary mirror is guided to a focus detector to detect the focus and to detect the front light. A part of the viewfinder observation light reflected by the splitter is guided by the light splitter to a light receiving element disposed above, and the auxiliary mirror is withdrawn from the photographing light beam and at the same time starts dimming of the strobe light. The optical system of a single-lens reflex camera.
て成ることを特徴とする実用新案登録請求の範囲第１
項記載の一眼レフレックスカメラの光学系。(2) Utility model registration claim 1, characterized in that the light splitter is formed by depositing a semi-transparent film on a transparent film.
The optical system of the single-lens reflex camera described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981182778U JPS5886625U (en) | 1981-12-07 | 1981-12-07 | Optical system of single-lens reflex camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981182778U JPS5886625U (en) | 1981-12-07 | 1981-12-07 | Optical system of single-lens reflex camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5886625U true JPS5886625U (en) | 1983-06-11 |
Family
ID=29981447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981182778U Pending JPS5886625U (en) | 1981-12-07 | 1981-12-07 | Optical system of single-lens reflex camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5886625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0289039A (en) * | 1988-09-26 | 1990-03-29 | Canon Inc | Mirror structure of camera |
-
1981
- 1981-12-07 JP JP1981182778U patent/JPS5886625U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0289039A (en) * | 1988-09-26 | 1990-03-29 | Canon Inc | Mirror structure of camera |
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