JPS616803U - Prism for finder - Google Patents
Prism for finderInfo
- Publication number
- JPS616803U JPS616803U JP9047784U JP9047784U JPS616803U JP S616803 U JPS616803 U JP S616803U JP 9047784 U JP9047784 U JP 9047784U JP 9047784 U JP9047784 U JP 9047784U JP S616803 U JPS616803 U JP S616803U
- Authority
- JP
- Japan
- Prior art keywords
- prism
- incident
- reflecting
- light flux
- finder
- 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
- Transforming Light Signals Into Electric Signals (AREA)
- Viewfinders (AREA)
- Optical Elements Other Than Lenses (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案を電子カメラのファインダー光学系に適
用した場合の一実施例の光学系の概略図、第２図は本考
案の斜視図である。
図中１は撮影レンズ、２は可動鏡、３はローパスフイル
ター、４はシャッターユニット、５は保護ガラス、６は
撮像面、７は撮影体のパツケージ、８は光路補正板、９
はフォー力シングスクリーン、１０は第１プリズム、１
１は第２プリズム、１２は接眼レンズ、１３は瞳、ｓ１
， ｓ，は入射面、Ｓ２は第１反射面、８１′は第２反
射面、Ｓ３，Ｓ６は射出面、％，８５′は反射面、Ｓ．
／は第４反射面、２０は溝である。FIG. 1 is a schematic diagram of an optical system of an embodiment in which the present invention is applied to a finder optical system of an electronic camera, and FIG. 2 is a perspective view of the present invention. In the figure, 1 is a photographing lens, 2 is a movable mirror, 3 is a low-pass filter, 4 is a shutter unit, 5 is a protective glass, 6 is an imaging surface, 7 is a package for the photographing object, 8 is an optical path correction plate, 9
is the force sing screen, 10 is the first prism, 1
1 is the second prism, 12 is the eyepiece, 13 is the pupil, s1
, s, is the incident surface, S2 is the first reflective surface, 81' is the second reflective surface, S3 and S6 are the exit surfaces, %, 85' is the reflective surface, S.
/ is the fourth reflective surface, and 20 is a groove.
Claims (2)
面Ｓ１と前記入射面Ｓ１より入射した光束を前記入射節
，と同一の平面ＳＳ，上にある第２反射面Ｓ′方向へ反
射させる為の第１反射面Ｓ２と前・ 記第１反射面Ｓ２
そして前記第２反射面Ｓ．Ｉの順で皮射した光束を射出
させる為の射出面Ｓ３とを有する第１プリズムと前記第
１プリズムの射出面Ｓ３から射出してきた光束を入射さ
せる為の入射面Ｓ，と前記入射面Ｓ，と同一の平面ＳＳ
，上にある第４反射面Ｓ，′方向に反射させる為の２つ
の反射面Ｓ，，８５′からなるダハ面Ｓ５５′と前記ダ
ハ面８５５′そして前記第４反射面Ｓ４／の順で反射し
た光束を射出させる為の射出面Ｓ６とを有する第２プリ
ズムの２つのプリズムを有し前記第２プリズムの平陥Ｓ
，上であって前記第１プリズムの平面ＳＳ１との交線近
傍に溝を設けてゴースト像の発生を防止したことを特徴
とするファインダー用プリズム。(1) An incident surface S1 for inputting a light flux for observing an object image, and a light flux incident from the incident surface S1 toward the second reflecting surface S' located on the same plane SS as the incident node. The first reflective surface S2 for reflection and the first reflective surface S2
and the second reflective surface S. a first prism having an exit surface S3 for emitting the light flux incident on the skin in the order of I; an entrance surface S for allowing the light flux exiting from the exit surface S3 of the first prism to enter; and the entrance surface S. , the same plane SS
, the fourth reflecting surface S located above, the roof surface S55' consisting of the two reflecting surfaces S, , 85' for reflecting in the ' direction, the roof surface 855', and the fourth reflecting surface S4/ in that order. a second prism having an exit surface S6 for emitting a light beam; and a flat recess S of the second prism.
, a groove is provided near the line of intersection with the plane SS1 of the first prism to prevent the generation of ghost images.
特徴とする実用新案登録請求の範囲第１項記載のファイ
ンダー用プリズム。(2) The finder prism according to claim 1, wherein the groove is provided substantially perpendicularly on the flat rudder S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9047784U JPS616803U (en) | 1984-06-18 | 1984-06-18 | Prism for finder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9047784U JPS616803U (en) | 1984-06-18 | 1984-06-18 | Prism for finder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS616803U true JPS616803U (en) | 1986-01-16 |
Family
ID=30645503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9047784U Pending JPS616803U (en) | 1984-06-18 | 1984-06-18 | Prism for finder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS616803U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4830202U (en) * | 1971-08-11 | 1973-04-13 | ||
| JPS4828229A (en) * | 1971-08-16 | 1973-04-14 | ||
| JPS5139120A (en) * | 1974-09-30 | 1976-04-01 | Asahi Optical Co Ltd |
-
1984
- 1984-06-18 JP JP9047784U patent/JPS616803U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4830202U (en) * | 1971-08-11 | 1973-04-13 | ||
| JPS4828229A (en) * | 1971-08-16 | 1973-04-14 | ||
| JPS5139120A (en) * | 1974-09-30 | 1976-04-01 | Asahi Optical Co Ltd |
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