JPS55100520A - Magnifying image formation lens - Google Patents
Magnifying image formation lensInfo
- Publication number
- JPS55100520A JPS55100520A JP855479A JP855479A JPS55100520A JP S55100520 A JPS55100520 A JP S55100520A JP 855479 A JP855479 A JP 855479A JP 855479 A JP855479 A JP 855479A JP S55100520 A JPS55100520 A JP S55100520A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- directed
- lenses
- faces
- whose
- 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
Links
Abstract
PURPOSE: To achieve higher performance by specifically arraying 5 groups and 6 elements of lenses.
CONSTITUTION: The 1st, 2nd group lenses 1, 2 consisting of convex meniscus lenses whose respective convex faces are directed to the image side, the 3rd group lens consisting of a concave meniscus lens whose convex face is directed to the image side, the 4th group lens consisting of a biconcave lens 4a whose face of a larger curvature is directed to the object side and a biconvex lens 4b which is cemented to this and whose face of a larger curvature is directed to the object side and the 5th group lens consisting of a biconvex lens whose face of a larger curvature is directed to the object side are let to satisfy condition formulas (1)W(8) where the composite focal length f is made 100, r1Wrn are let the radius of curvature of the respective faces, d1Wdn the spacings between the faces of the respective lenses, n1Wn6 the refractive indices of the respective glasses, V1WV6 the Abbe numbers of the respective glasses and f1Wf11 the focal lengths up to the respective faces. Thereby, the contrast of images may be enhanced while the aperture efficiency of the lens is being kept 100%.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP855479A JPS55100520A (en) | 1979-01-26 | 1979-01-26 | Magnifying image formation lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP855479A JPS55100520A (en) | 1979-01-26 | 1979-01-26 | Magnifying image formation lens |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55100520A true JPS55100520A (en) | 1980-07-31 |
JPS5713848B2 JPS5713848B2 (en) | 1982-03-19 |
Family
ID=11696328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP855479A Granted JPS55100520A (en) | 1979-01-26 | 1979-01-26 | Magnifying image formation lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55100520A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4376571A (en) * | 1980-06-06 | 1983-03-15 | Canon Kabushiki Kaisha | Photographic small size objective |
US4390251A (en) * | 1980-09-03 | 1983-06-28 | Canon Kabushiki Kaisha | Photographic objectives of relatively large aperture |
JPH09145998A (en) * | 1995-11-20 | 1997-06-06 | Nec Corp | Projection lens and liquid crystal projector using the same |
RU2611106C1 (en) * | 2015-10-27 | 2017-02-21 | Публичное акционерное общество "Красногорский завод им. С.А. Зверева" | High-aperture lens |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60243335A (en) * | 1984-05-17 | 1985-12-03 | Toyota Motor Corp | Air-fuel ratio controlling apparatus |
JPS6187944A (en) * | 1984-10-05 | 1986-05-06 | Mazda Motor Corp | Control device for engine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3517979A (en) * | 1968-06-17 | 1970-06-30 | Morgan Co Inc R A | Lens system for use in the near ultraviolet light range |
JPS4953419A (en) * | 1972-09-22 | 1974-05-24 |
-
1979
- 1979-01-26 JP JP855479A patent/JPS55100520A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3517979A (en) * | 1968-06-17 | 1970-06-30 | Morgan Co Inc R A | Lens system for use in the near ultraviolet light range |
JPS4953419A (en) * | 1972-09-22 | 1974-05-24 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4376571A (en) * | 1980-06-06 | 1983-03-15 | Canon Kabushiki Kaisha | Photographic small size objective |
US4390251A (en) * | 1980-09-03 | 1983-06-28 | Canon Kabushiki Kaisha | Photographic objectives of relatively large aperture |
JPH09145998A (en) * | 1995-11-20 | 1997-06-06 | Nec Corp | Projection lens and liquid crystal projector using the same |
RU2611106C1 (en) * | 2015-10-27 | 2017-02-21 | Публичное акционерное общество "Красногорский завод им. С.А. Зверева" | High-aperture lens |
Also Published As
Publication number | Publication date |
---|---|
JPS5713848B2 (en) | 1982-03-19 |
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