JP4818721B2 - 光学部材 - Google Patents
光学部材 Download PDFInfo
- Publication number
- JP4818721B2 JP4818721B2 JP2005378658A JP2005378658A JP4818721B2 JP 4818721 B2 JP4818721 B2 JP 4818721B2 JP 2005378658 A JP2005378658 A JP 2005378658A JP 2005378658 A JP2005378658 A JP 2005378658A JP 4818721 B2 JP4818721 B2 JP 4818721B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- filter
- optical member
- edge
- member according
- 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.)
- Active
Links
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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/02—Diaphragms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0018—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for preventing ghost images
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
-
- 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
- G03B9/36—Sliding rigid plate
- G03B9/40—Double plate
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Diaphragms For Cameras (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
12 絞り機構
13 ローパスフィルタ
14 固体撮像素子
15 支持板
16、17 絞り羽根
21、31、41、51 NDフィルタ
22 絞り開口部
32、52 フィルム基材
33、53 ND膜
Claims (7)
- 撮影素子上に被写体像を形成する撮像光学系内に配置し透光性を有するNDフィルタから成る光学部材であって、前記撮像光学系の絞り羽根による開口部内に入り込む縁部の2つの稜線とこれらの稜線間に挟まれた端面とにおいて、前記稜線のうちの少なくとも一方の稜線に沿って非周期性の凹凸部を形成し、前記端面には前記稜線に形成した凹凸部とは異なる粗面又は様々な高さの凹凸溝を形成したことを特徴とする光学部材。
- 前記凹凸部を形成した一方の稜線は光線が入射する側の稜線としたことを特徴とする請求項1に記載の光学部材。
- 前記凹凸部は鋸歯状に様々な大きさの凹凸を設けたことを特徴とする請求項1又は2に記載の光学部材。
- 前記端面に形成した凹凸溝の方向を前記稜線方向と異なる方向に向けたことを特徴とする請求項1〜3の何れか1つの請求項に記載の光学部材。
- 前記端面に形成した凹凸溝の方向を前記稜線方向と同方向に向けたことを特徴とする請求項1〜3の何れか1つの請求項に記載の光学部材。
- 前記NDフィルタは透明プラスチックフィルムの少なくとも片面に光減衰膜を付したことを特徴とする請求項1〜5の何れか1つの請求項に記載の光学部材。
- 前記NDフィルタは光透過率が連続的に変化する光減衰特性を有し、前記縁部から離れるにつれ、光透過率を低くしたグラデーション特性を有することを特徴とする請求項1〜6の何れか1つの請求項に記載の光学部材。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005378658A JP4818721B2 (ja) | 2005-12-28 | 2005-12-28 | 光学部材 |
US11/610,732 US7651283B2 (en) | 2005-12-28 | 2006-12-14 | Optical device |
CNB2006101712992A CN100510934C (zh) | 2005-12-28 | 2006-12-28 | 光学设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005378658A JP4818721B2 (ja) | 2005-12-28 | 2005-12-28 | 光学部材 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011128165A Division JP5410473B2 (ja) | 2011-06-08 | 2011-06-08 | 光学部材 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007178823A JP2007178823A (ja) | 2007-07-12 |
JP4818721B2 true JP4818721B2 (ja) | 2011-11-16 |
Family
ID=38224538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005378658A Active JP4818721B2 (ja) | 2005-12-28 | 2005-12-28 | 光学部材 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7651283B2 (ja) |
JP (1) | JP4818721B2 (ja) |
CN (1) | CN100510934C (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7018143B2 (ja) | 2018-09-05 | 2022-02-09 | 株式会社パイオラックス | 圧力調整バルブ |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009123848A (ja) * | 2007-11-13 | 2009-06-04 | Sharp Corp | 固体撮像装置とその製造方法、および電子機器 |
JP4462354B2 (ja) | 2008-01-22 | 2010-05-12 | ソニー株式会社 | 撮像装置 |
JP2010204206A (ja) * | 2009-02-27 | 2010-09-16 | Sony Corp | 光量調整装置、レンズ鏡筒、撮像装置、及び撮像装置の制御方法 |
JP5567841B2 (ja) * | 2010-01-20 | 2014-08-06 | キヤノン電子株式会社 | 光学部材及び該光学部材を用いた光量調節装置 |
EP2793060A4 (en) * | 2011-12-12 | 2015-08-05 | Canon Denshi Kk | OPTICAL FILTER, LIGHT VOLUME ADJUSTING DEVICE, AND IMAGE CAPTURE DEVICE COMPRISING SAME |
JP6030846B2 (ja) * | 2012-04-18 | 2016-11-24 | ニスカ株式会社 | 絞り羽根の製造方法 |
KR101467139B1 (ko) * | 2012-08-03 | 2014-11-28 | 아사히 가라스 가부시키가이샤 | 광학 필터 |
CN106063259B (zh) * | 2014-03-14 | 2018-11-02 | 索尼公司 | 成像设备、可变光圈装置、成像方法和程序 |
KR20160063584A (ko) * | 2014-11-27 | 2016-06-07 | 한국전자통신연구원 | 회절무늬 제거를 위해 엣지 가공된 개구를 갖는 이미지 디텍터의 이미지 검출 방법 |
JP2018060144A (ja) * | 2016-10-07 | 2018-04-12 | 日本電産コパル株式会社 | 羽根駆動装置、撮像装置及び光学機器 |
US20220349750A1 (en) * | 2019-09-24 | 2022-11-03 | Agilent Technologies, Inc. | Variable transmission aperture |
US10924705B1 (en) | 2019-12-31 | 2021-02-16 | Christie Digital Systems Usa, Inc. | Serrated prism exit aperture for managing projection flare artifacts |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1689258A (en) * | 1928-10-30 | seymour | ||
US3013481A (en) * | 1956-09-25 | 1961-12-19 | Agfa Ag | Pneumatic exposure regulating device for photographic cameras |
US3584558A (en) * | 1969-01-31 | 1971-06-15 | Eastman Kodak Co | Device for extending exposure range of a camera |
US3675562A (en) * | 1969-06-28 | 1972-07-11 | Canon Kk | Iris diaphragm for a camera |
US3682075A (en) * | 1970-01-15 | 1972-08-08 | Leo H Profitt | Combination diffusion and vignetting tool |
US4113359A (en) * | 1977-03-16 | 1978-09-12 | Hiroshi Koike | Automatic diaphragm assembly |
JPS5612629A (en) * | 1979-07-13 | 1981-02-07 | Canon Inc | Blade for exposure control |
JP2592949B2 (ja) | 1989-01-20 | 1997-03-19 | キヤノン電子株式会社 | 絞り装置 |
JPH0455838A (ja) * | 1990-06-25 | 1992-02-24 | Sony Corp | ビデオカメラ |
US5479298A (en) * | 1991-12-20 | 1995-12-26 | Canon Denshi Kabushiki Kaisha | ND filter and aperture device using the same |
JP2754518B2 (ja) * | 1992-03-31 | 1998-05-20 | キヤノン電子株式会社 | 光量絞り装置 |
JP3155812B2 (ja) * | 1992-04-02 | 2001-04-16 | キヤノン株式会社 | 画質の低下を防いだ絞り及び絞りを具えた光学装置 |
JPH0643520A (ja) * | 1992-07-23 | 1994-02-18 | Fuji Photo Optical Co Ltd | 絞り機構 |
US5689746A (en) * | 1993-08-13 | 1997-11-18 | Canon Kabushiki Kaisha | Amount-of-light adjusting device |
JP2000036917A (ja) | 1998-07-17 | 2000-02-02 | Sony Corp | 撮像装置 |
JP2002229095A (ja) * | 2001-02-06 | 2002-08-14 | Nidec Copal Corp | 絞り羽根 |
JP2003004916A (ja) * | 2001-06-20 | 2003-01-08 | Dainippon Printing Co Ltd | 表示装置の窓材、その製造方法、及び表示装置 |
JP3893082B2 (ja) * | 2002-06-03 | 2007-03-14 | 株式会社タムロン | 絞り装置及びそれを組込んだビデオカメラ、ビデオカメラ用レンズ |
-
2005
- 2005-12-28 JP JP2005378658A patent/JP4818721B2/ja active Active
-
2006
- 2006-12-14 US US11/610,732 patent/US7651283B2/en active Active
- 2006-12-28 CN CNB2006101712992A patent/CN100510934C/zh active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7018143B2 (ja) | 2018-09-05 | 2022-02-09 | 株式会社パイオラックス | 圧力調整バルブ |
Also Published As
Publication number | Publication date |
---|---|
CN100510934C (zh) | 2009-07-08 |
US20070154207A1 (en) | 2007-07-05 |
JP2007178823A (ja) | 2007-07-12 |
CN101008763A (zh) | 2007-08-01 |
US7651283B2 (en) | 2010-01-26 |
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