JPS5162737A - - Google Patents
Info
- Publication number
- JPS5162737A JPS5162737A JP50117589A JP11758975A JPS5162737A JP S5162737 A JPS5162737 A JP S5162737A JP 50117589 A JP50117589 A JP 50117589A JP 11758975 A JP11758975 A JP 11758975A JP S5162737 A JPS5162737 A JP S5162737A
- Authority
- JP
- Japan
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
-
- 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
- G02B15/144—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 four groups only
- G02B15/1441—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 four groups only the first group being positive
- G02B15/144113—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 four groups only the first group being positive arranged +-++
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US514340A US3920315A (en) | 1974-10-15 | 1974-10-15 | Zoom projection lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5162737A true JPS5162737A (ja) | 1976-05-31 |
Family
ID=24046756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50117589A Pending JPS5162737A (ja) | 1974-10-15 | 1975-09-29 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3920315A (ja) |
| JP (1) | JPS5162737A (ja) |
| AT (1) | ATA771775A (ja) |
| DE (1) | DE2543594A1 (ja) |
| GB (1) | GB1458345A (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120201A (ja) * | 1982-01-11 | 1983-07-18 | Hitachi Ltd | プラスチツクレンズを用いたズ−ムレンズ |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4153339A (en) * | 1975-06-06 | 1979-05-08 | Canon Kabushiki Kaisha | Zoom lens |
| JPS5832684B2 (ja) * | 1977-07-30 | 1983-07-14 | 旭光学工業株式会社 | 高変倍率を有する広角ズ−ムレンズ系 |
| US4297007A (en) * | 1979-04-24 | 1981-10-27 | Polaroid Corporation | Optical apparatus and method for changing a zoom camera to a fixed focus camera |
| FR2466785A1 (fr) * | 1979-09-28 | 1981-04-10 | Philips Nv | Objectif a focale variable suivant de grands rapports comportant des surfaces aspheriques |
| JPS56147113A (en) * | 1980-04-18 | 1981-11-14 | Canon Inc | Zoom lens |
| JPS5727219A (en) * | 1980-07-25 | 1982-02-13 | Canon Inc | Zoom lens |
| US4653872A (en) * | 1981-04-22 | 1987-03-31 | Nippon Kogaku K. K. | Athermalized zoom lens system |
| JPS5865407A (ja) * | 1981-10-15 | 1983-04-19 | Nippon Kogaku Kk <Nikon> | ズ−ムレンズ系 |
| JPS5979212A (ja) * | 1982-10-29 | 1984-05-08 | Canon Inc | 合成樹脂材料を用いたズ−ムレンズ |
| CH658322A5 (fr) * | 1983-04-20 | 1986-10-31 | Francois Laurent | Systeme optique additif divergent. |
| US5313330A (en) * | 1992-08-31 | 1994-05-17 | U.S. Precision Lens Incorporated | Zoom projection lens systems |
| US5816690A (en) * | 1994-11-29 | 1998-10-06 | The Obie Company | Compact theatrical light and method |
| US6650484B2 (en) * | 2000-06-21 | 2003-11-18 | Matsushita Electric Industrial Co., Ltd. | Zoom lens, and its manufacturing method |
| JP5919718B2 (ja) * | 2011-10-17 | 2016-05-18 | セイコーエプソン株式会社 | 投射用ズームレンズ |
| TWI613480B (zh) | 2017-02-08 | 2018-02-01 | 大立光電股份有限公司 | 光學取像鏡片系統、取像裝置及電子裝置 |
| CN113311563B (zh) * | 2020-02-27 | 2024-02-06 | 中强光电股份有限公司 | 光学镜头 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3000260A (en) * | 1960-03-28 | 1961-09-19 | Revere Camera Co | Zoom projection lens |
| US3194139A (en) * | 1962-03-05 | 1965-07-13 | Eastman Kodak Co | Zoom camera system |
-
1974
- 1974-10-15 US US514340A patent/US3920315A/en not_active Expired - Lifetime
-
1975
- 1975-09-29 JP JP50117589A patent/JPS5162737A/ja active Pending
- 1975-09-30 DE DE19752543594 patent/DE2543594A1/de active Pending
- 1975-10-06 GB GB4077575A patent/GB1458345A/en not_active Expired
- 1975-10-09 AT AT771775A patent/ATA771775A/de not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120201A (ja) * | 1982-01-11 | 1983-07-18 | Hitachi Ltd | プラスチツクレンズを用いたズ−ムレンズ |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2543594A1 (de) | 1976-04-22 |
| ATA771775A (de) | 1978-05-15 |
| US3920315A (en) | 1975-11-18 |
| GB1458345A (en) | 1976-12-15 |