JPS53117420A - Large aperture ratio lens of long back focus - Google Patents
Large aperture ratio lens of long back focusInfo
- Publication number
- JPS53117420A JPS53117420A JP3272877A JP3272877A JPS53117420A JP S53117420 A JPS53117420 A JP S53117420A JP 3272877 A JP3272877 A JP 3272877A JP 3272877 A JP3272877 A JP 3272877A JP S53117420 A JPS53117420 A JP S53117420A
- Authority
- JP
- Japan
- Prior art keywords
- aperture ratio
- large aperture
- back focus
- long back
- ratio lens
- 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
- 230000004075 alteration Effects 0.000 abstract 1
- 229910021474 group 7 element Inorganic materials 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
- G02B9/36—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only arranged + -- +
- G02B9/38—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only arranged + -- + both - components being meniscus
- G02B9/40—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only arranged + -- + both - components being meniscus one - component being compound
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3272877A JPS53117420A (en) | 1977-03-23 | 1977-03-23 | Large aperture ratio lens of long back focus |
DE19782808107 DE2808107A1 (de) | 1977-03-23 | 1978-02-24 | Modifiziertes gauss-objektiv |
US05/886,747 US4182550A (en) | 1977-03-23 | 1978-03-15 | Modified gauss type lens system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3272877A JPS53117420A (en) | 1977-03-23 | 1977-03-23 | Large aperture ratio lens of long back focus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS53117420A true JPS53117420A (en) | 1978-10-13 |
Family
ID=12366893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3272877A Pending JPS53117420A (en) | 1977-03-23 | 1977-03-23 | Large aperture ratio lens of long back focus |
Country Status (3)
Country | Link |
---|---|
US (1) | US4182550A (ja) |
JP (1) | JPS53117420A (ja) |
DE (1) | DE2808107A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54158225A (en) * | 1978-06-05 | 1979-12-13 | Ricoh Co Ltd | Photographic lens having long back focus and large aperture ratio |
JP2020106790A (ja) * | 2018-12-27 | 2020-07-09 | エーエーシー テクノロジーズ ピーティーイー リミテッド | 撮像光学レンズ |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59149312A (ja) * | 1983-02-16 | 1984-08-27 | Asahi Optical Co Ltd | 大口径比写真レンズ |
KR0177980B1 (ko) * | 1995-09-29 | 1999-05-15 | 이대원 | 대구경 사진 렌즈 |
JP3821929B2 (ja) * | 1997-09-29 | 2006-09-13 | フジノン株式会社 | カラー画像読み取り用ガウス型レンズ |
KR101553835B1 (ko) * | 2008-12-17 | 2015-09-17 | 삼성전자주식회사 | 대구경 표준 렌즈 |
KR101627133B1 (ko) * | 2014-03-28 | 2016-06-03 | 삼성전기주식회사 | 렌즈 모듈 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1268873B (de) * | 1967-12-09 | 1968-05-22 | Leitz Ernst Gmbh | Photographisches Objektiv |
JPS5443386B1 (ja) * | 1970-12-25 | 1979-12-19 | ||
JPS5817929B2 (ja) * | 1975-06-14 | 1983-04-11 | オリンパス光学工業株式会社 | ダイコウケイヒシヤシンレンズ |
-
1977
- 1977-03-23 JP JP3272877A patent/JPS53117420A/ja active Pending
-
1978
- 1978-02-24 DE DE19782808107 patent/DE2808107A1/de not_active Withdrawn
- 1978-03-15 US US05/886,747 patent/US4182550A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54158225A (en) * | 1978-06-05 | 1979-12-13 | Ricoh Co Ltd | Photographic lens having long back focus and large aperture ratio |
JP2020106790A (ja) * | 2018-12-27 | 2020-07-09 | エーエーシー テクノロジーズ ピーティーイー リミテッド | 撮像光学レンズ |
Also Published As
Publication number | Publication date |
---|---|
DE2808107A1 (de) | 1978-09-28 |
US4182550A (en) | 1980-01-08 |
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