JPS6145212B2 - - Google Patents
Info
- Publication number
- JPS6145212B2 JPS6145212B2 JP52021717A JP2171777A JPS6145212B2 JP S6145212 B2 JPS6145212 B2 JP S6145212B2 JP 52021717 A JP52021717 A JP 52021717A JP 2171777 A JP2171777 A JP 2171777A JP S6145212 B2 JPS6145212 B2 JP S6145212B2
- Authority
- JP
- Japan
- Prior art keywords
- prism
- lens
- image
- focal plane
- optical system
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 55
- 230000011514 reflex Effects 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 17
- 230000002093 peripheral effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000004075 alteration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000005375 photometry Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B19/00—Cameras
- G03B19/02—Still-picture cameras
- G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
- G02B23/08—Periscopes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Optics & Photonics (AREA)
- Viewfinders (AREA)
- Lenses (AREA)
- Optical Elements Other Than Lenses (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2171777A JPS53106119A (en) | 1977-02-28 | 1977-02-28 | Finder optical system for singleelens reflex camera |
US05/870,710 US4171888A (en) | 1977-02-28 | 1978-01-19 | Finder optical system for a single lens reflex camera |
GB2739/78A GB1576179A (en) | 1977-02-28 | 1978-01-24 | Optical finder for a single lens reflex camera and single lens reflex camera including same |
DE2804462A DE2804462C3 (de) | 1977-02-28 | 1978-02-02 | In Form eines Kepler-Teleskops ausgebildetes optisches Suchersystem für eine einäugige Spiegelreflexkamera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2171777A JPS53106119A (en) | 1977-02-28 | 1977-02-28 | Finder optical system for singleelens reflex camera |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53106119A JPS53106119A (en) | 1978-09-14 |
JPS6145212B2 true JPS6145212B2 (US07534539-20090519-C00280.png) | 1986-10-07 |
Family
ID=12062818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2171777A Granted JPS53106119A (en) | 1977-02-28 | 1977-02-28 | Finder optical system for singleelens reflex camera |
Country Status (4)
Country | Link |
---|---|
US (1) | US4171888A (US07534539-20090519-C00280.png) |
JP (1) | JPS53106119A (US07534539-20090519-C00280.png) |
DE (1) | DE2804462C3 (US07534539-20090519-C00280.png) |
GB (1) | GB1576179A (US07534539-20090519-C00280.png) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60205415A (ja) * | 1984-03-29 | 1985-10-17 | Olympus Optical Co Ltd | 一眼レフレツクスカメラのフアインダ−光学系 |
US4910545A (en) * | 1987-09-09 | 1990-03-20 | Canon Kabushiki Kaisha | Finder optical system |
JP2544427B2 (ja) * | 1988-02-17 | 1996-10-16 | オリンパス光学工業株式会社 | ファインダ―光学系 |
JPH0318520U (US07534539-20090519-C00280.png) * | 1989-07-03 | 1991-02-22 | ||
US6005712A (en) * | 1991-10-16 | 1999-12-21 | Minolta Co., Ltd. | Zoom viewfinder system for single reflex camera |
JP3237427B2 (ja) * | 1994-12-22 | 2001-12-10 | キヤノン株式会社 | 撮影装置 |
JPH1073877A (ja) * | 1996-09-02 | 1998-03-17 | Asahi Optical Co Ltd | カメラのファインダー内表示装置 |
JP2000131735A (ja) * | 1998-10-21 | 2000-05-12 | Canon Inc | 実像ファインダー |
JP2000199924A (ja) | 1999-01-07 | 2000-07-18 | Asahi Optical Co Ltd | 一眼レフカメラのファインダ光学系 |
JP3515733B2 (ja) | 2000-04-06 | 2004-04-05 | ペンタックス株式会社 | 一眼レフカメラのファインダ光学系 |
US6388821B1 (en) * | 2000-07-20 | 2002-05-14 | Rockwell Collins, Inc. | Lens-based image reversion system |
JP4979421B2 (ja) * | 2007-03-20 | 2012-07-18 | ペンタックスリコーイメージング株式会社 | 一眼レフカメラのリレー式ファインダ光学系 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR983624A (fr) * | 1948-03-24 | 1951-06-26 | Reichert Optische Werke Ag | Viseur pour appareil photographique à miroir réfléchissant |
JPS56252Y2 (US07534539-20090519-C00280.png) * | 1974-09-30 | 1981-01-07 | ||
JPS5845686B2 (ja) * | 1976-03-03 | 1983-10-12 | オリンパス光学工業株式会社 | 内視鏡用一眼レフ光学系 |
-
1977
- 1977-02-28 JP JP2171777A patent/JPS53106119A/ja active Granted
-
1978
- 1978-01-19 US US05/870,710 patent/US4171888A/en not_active Expired - Lifetime
- 1978-01-24 GB GB2739/78A patent/GB1576179A/en not_active Expired
- 1978-02-02 DE DE2804462A patent/DE2804462C3/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2804462B2 (de) | 1979-07-26 |
JPS53106119A (en) | 1978-09-14 |
DE2804462A1 (de) | 1978-08-31 |
GB1576179A (en) | 1980-10-01 |
US4171888A (en) | 1979-10-23 |
DE2804462C3 (de) | 1980-03-27 |
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