JPH0414325B2 - - Google Patents
Info
- Publication number
- JPH0414325B2 JPH0414325B2 JP55064050A JP6405080A JPH0414325B2 JP H0414325 B2 JPH0414325 B2 JP H0414325B2 JP 55064050 A JP55064050 A JP 55064050A JP 6405080 A JP6405080 A JP 6405080A JP H0414325 B2 JPH0414325 B2 JP H0414325B2
- Authority
- JP
- Japan
- Prior art keywords
- group
- lens
- groups
- positive
- convergent
- 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
- 230000005499 meniscus Effects 0.000 claims description 5
- 230000004075 alteration Effects 0.000 description 23
- 238000010586 diagram Methods 0.000 description 11
- 239000002131 composite material Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 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 -
- G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
-
- 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 -
- G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6405080A JPS56161516A (en) | 1980-05-16 | 1980-05-16 | Long working distance projection lens |
US06/260,775 US4426136A (en) | 1980-05-16 | 1981-05-05 | Projection lens with long working distance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6405080A JPS56161516A (en) | 1980-05-16 | 1980-05-16 | Long working distance projection lens |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56161516A JPS56161516A (en) | 1981-12-11 |
JPH0414325B2 true JPH0414325B2 (en]) | 1992-03-12 |
Family
ID=13246872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6405080A Granted JPS56161516A (en) | 1980-05-16 | 1980-05-16 | Long working distance projection lens |
Country Status (2)
Country | Link |
---|---|
US (1) | US4426136A (en]) |
JP (1) | JPS56161516A (en]) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5087265B2 (ja) * | 2006-12-11 | 2012-12-05 | オリンパス株式会社 | 長作動距離対物レンズ |
RU2473932C2 (ru) * | 2010-04-26 | 2013-01-27 | Закрытое Акционерное Общество "Импульс" | Проекционный объектив |
RU2426160C1 (ru) * | 2010-04-26 | 2011-08-10 | Закрытое Акционерное Общество "Импульс" | Проекционный объектив |
JP2012173435A (ja) * | 2011-02-18 | 2012-09-10 | Tamron Co Ltd | 固定焦点レンズ |
US9874728B1 (en) | 2016-01-08 | 2018-01-23 | General Electric Company | Long working distance lens system, assembly, and method |
-
1980
- 1980-05-16 JP JP6405080A patent/JPS56161516A/ja active Granted
-
1981
- 1981-05-05 US US06/260,775 patent/US4426136A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4426136A (en) | 1984-01-17 |
JPS56161516A (en) | 1981-12-11 |
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