KR19980038405A - 실상식 파인더 - Google Patents
실상식 파인더 Download PDFInfo
- Publication number
- KR19980038405A KR19980038405A KR1019960057303A KR19960057303A KR19980038405A KR 19980038405 A KR19980038405 A KR 19980038405A KR 1019960057303 A KR1019960057303 A KR 1019960057303A KR 19960057303 A KR19960057303 A KR 19960057303A KR 19980038405 A KR19980038405 A KR 19980038405A
- Authority
- KR
- South Korea
- Prior art keywords
- image
- lens
- lens group
- finder
- refractive power
- 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.)
- Granted
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/08—Anamorphotic objectives
- G02B13/10—Anamorphotic objectives involving prisms
-
- 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
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/02—Viewfinders
- G03B13/06—Viewfinders with lenses with or without reflectors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
Description
| 면번호 | r(곡률 반경) | d(두께 및 거리) | nd(굴절률) | v(아베수) |
| 1 | 35.600 | 0.80 | 1.49176 | 57.4 |
| 2* | 4.762 | d2 | 1.00000 | |
| 3* | 8.868 | 2.38 | 1.49176 | 57.4 |
| 4 | -9.195 | d4 | 1.00000 | |
| 5 | 36.929 | 0.80 | 1.49176 | 57.4 |
| 6* | -95.698 | 0.47 | 1.00000 | |
| 7 | 13.2 | 1.49176 | 57.4 | |
| 8 | -34.022 | 1.80 | 1.00000 | |
| 9 | 0.00 | 1.00000 | ||
| 10 | 23.92 | 1.49176 | 57.4 | |
| 11 | 0.60 | 1.00000 | ||
| 12* | 25.604 | 2.46 | 1.49176 | 57.4 |
| 13 | -12.845 | 18.22 | 1.00000 |
| 광각단 | 중간단 | 망원단 | |
| d2 | 10.954 | 9.419 | 4.606 |
| d4 | 0.805 | 0.231 | 7.039 |
| K(코닉상수) | 비구면계수A | 비구면계수B | 비구면계수C | 비구면계수D | |
| R2 | -0.16032568E+02 | 0.14945601E-01 | -0.22981088E-02 | 0.23670584E-03 | -0.99099983E-05 |
| R3 | -0.98635005E+01 | 0.17326006E-02 | -0.14576432E-03 | 0.10052031E-04 | -0.28900460E-06 |
| R6 | -0.59891489E+02 | 0.90546458E-03 | 0.12579368E-04 | -0.39773056E-05 | -0.25057276E-06 |
| R12 | -0.21000000E+02 |
Claims (5)
- 물체측으로부터, 부의 굴절력을 가진 제1렌즈군과, 정의 굴절력을 가진 제2렌즈군과, 정의 굴절력을 가진 제3렌즈군과, 정의 굴절력을 가지고 상측에 볼록인 곡률을 가진 프리즘으로 구성되어, 1차적으로 상을 결상하는 대물렌즈 수단과 상기 대물렌즈수단에서 생긴 도립상을 정립시키는 상반전 광학계와 상기 상반전 광학계에 의해 정립된 상을 확대시키는 접안 렌즈 수단을 포함하여 이루어지는 실상식 파인더.
- 청구항 1에 있어서, 상기한 대물렌즈 수단은 제1렌즈군과 제2렌즈군에 적어도 1면 이상의 비구면을 채용하는 것을 특징으로 하는 실상식 파인더.
- 청구항 1에 있어서, 상기한 대물렌즈수단은 제3렌즈군의 상측면이 볼록하고, 비구면인 것을 특징인 실상식 파인더.
- 청구항 3에 있어서, 상기 접안 렌즈 수단의 초점위치가 상반전 광학계의 물체측면에 존재하고, 상기 초점위치가 대물렌즈 수단의 프리즘의 상측면에서 1.5㎜이상 떨어져 있는 것이 특징인 실상 파인더.
- 청구항 1에 있어서, 각 렌즈군의 소재가 동일한 것이 특징인 실상식 파인더.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960057303A KR100222594B1 (ko) | 1996-11-26 | 1996-11-26 | 실상식 파인더 |
| US08/974,980 US5920428A (en) | 1996-11-26 | 1997-11-20 | Real image finder |
| CN97126028A CN1105940C (zh) | 1996-11-26 | 1997-11-26 | 实像取景器 |
| GB9725019A GB2319632B (en) | 1996-11-26 | 1997-11-26 | Real image finder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960057303A KR100222594B1 (ko) | 1996-11-26 | 1996-11-26 | 실상식 파인더 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980038405A true KR19980038405A (ko) | 1998-08-05 |
| KR100222594B1 KR100222594B1 (ko) | 1999-11-01 |
Family
ID=19483529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960057303A Expired - Fee Related KR100222594B1 (ko) | 1996-11-26 | 1996-11-26 | 실상식 파인더 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5920428A (ko) |
| KR (1) | KR100222594B1 (ko) |
| CN (1) | CN1105940C (ko) |
| GB (1) | GB2319632B (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100463331B1 (ko) * | 2001-12-12 | 2004-12-23 | 삼성테크윈 주식회사 | 소형 변배 파인더 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6178042B1 (en) * | 1997-01-21 | 2001-01-23 | Olympus Optical Co., Ltd. | Real image mode finder and camera using the same |
| JPH1138473A (ja) * | 1997-07-18 | 1999-02-12 | Olympus Optical Co Ltd | 実像式ファインダー |
| US6778324B1 (en) * | 1999-08-25 | 2004-08-17 | Canon Kabushiki Kaisha | Viewfinder optical system and optical apparatus |
| JP4285957B2 (ja) * | 2002-08-29 | 2009-06-24 | オリンパス株式会社 | ズームレンズ及びそれを有する電子撮像装置 |
| JP2005265878A (ja) * | 2004-03-16 | 2005-09-29 | Canon Inc | 像回転機能を有する光学系 |
| CN104597600B (zh) * | 2015-02-28 | 2016-09-07 | 青岛奥美克医疗科技有限公司 | 一种结构紧凑的开普勒光学系统 |
| US10302906B2 (en) * | 2016-04-20 | 2019-05-28 | Shenzhen Ned Optics Co., Ltd. | Eyepiece optical system for near-eye display, and head-mounted display device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3064337B2 (ja) * | 1990-06-21 | 2000-07-12 | オリンパス光学工業株式会社 | 実像式変倍ファインダー光学系 |
| US5231534A (en) * | 1991-01-17 | 1993-07-27 | Olympus Optical Co., Ltd. | Real image mode variable magnification finder optical system |
| JP3324801B2 (ja) * | 1992-10-28 | 2002-09-17 | オリンパス光学工業株式会社 | 変倍ファインダー光学系 |
| JPH05297274A (ja) * | 1992-04-16 | 1993-11-12 | Nikon Corp | ケプラー式ズームファインダー光学系 |
| JP3387524B2 (ja) * | 1992-07-06 | 2003-03-17 | オリンパス光学工業株式会社 | 変倍ファインダ光学系 |
| JP2990974B2 (ja) * | 1992-09-11 | 1999-12-13 | キヤノン株式会社 | 変倍ファインダー |
| JPH06160709A (ja) * | 1992-11-20 | 1994-06-07 | Konica Corp | 実像式変倍ファインダ |
| JP3443200B2 (ja) * | 1995-02-28 | 2003-09-02 | オリンパス光学工業株式会社 | ケプラー式変倍ファインダー |
-
1996
- 1996-11-26 KR KR1019960057303A patent/KR100222594B1/ko not_active Expired - Fee Related
-
1997
- 1997-11-20 US US08/974,980 patent/US5920428A/en not_active Expired - Lifetime
- 1997-11-26 GB GB9725019A patent/GB2319632B/en not_active Expired - Fee Related
- 1997-11-26 CN CN97126028A patent/CN1105940C/zh not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100463331B1 (ko) * | 2001-12-12 | 2004-12-23 | 삼성테크윈 주식회사 | 소형 변배 파인더 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1188905A (zh) | 1998-07-29 |
| CN1105940C (zh) | 2003-04-16 |
| US5920428A (en) | 1999-07-06 |
| GB2319632B (en) | 1999-06-30 |
| GB9725019D0 (en) | 1998-01-28 |
| KR100222594B1 (ko) | 1999-11-01 |
| GB2319632A (en) | 1998-05-27 |
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