JPS6119971B2 - - Google Patents
Info
- Publication number
- JPS6119971B2 JPS6119971B2 JP56058594A JP5859481A JPS6119971B2 JP S6119971 B2 JPS6119971 B2 JP S6119971B2 JP 56058594 A JP56058594 A JP 56058594A JP 5859481 A JP5859481 A JP 5859481A JP S6119971 B2 JPS6119971 B2 JP S6119971B2
- Authority
- JP
- Japan
- Prior art keywords
- group
- illumination
- groups
- optical system
- projection
- 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
- 238000005286 illumination Methods 0.000 claims description 41
- 230000003287 optical effect Effects 0.000 claims description 31
- 230000004907 flux Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000004075 alteration Effects 0.000 description 4
- 241000276498 Pollachius virens Species 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/145—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only
- G02B15/1451—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only the first group being positive
- G02B15/145121—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having five groups only the first group being positive arranged +-+-+
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Instruments For Measurement Of Length By Optical Means (AREA)
- Microscoopes, Condenser (AREA)
- Lenses (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56058594A JPS57173812A (en) | 1981-04-20 | 1981-04-20 | Projecting zoom lens with incorporated half-mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56058594A JPS57173812A (en) | 1981-04-20 | 1981-04-20 | Projecting zoom lens with incorporated half-mirror |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57173812A JPS57173812A (en) | 1982-10-26 |
| JPS6119971B2 true JPS6119971B2 (enrdf_load_stackoverflow) | 1986-05-20 |
Family
ID=13088810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56058594A Granted JPS57173812A (en) | 1981-04-20 | 1981-04-20 | Projecting zoom lens with incorporated half-mirror |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57173812A (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5978150A (en) * | 1995-06-01 | 1999-11-02 | Nikon Corporation | Zoom lens |
-
1981
- 1981-04-20 JP JP56058594A patent/JPS57173812A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57173812A (en) | 1982-10-26 |
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