IT1016344B - Obiettivo a focale variabile per ingrandimento variabile - Google Patents
Obiettivo a focale variabile per ingrandimento variabileInfo
- Publication number
- IT1016344B IT1016344B IT51977/74A IT5197774A IT1016344B IT 1016344 B IT1016344 B IT 1016344B IT 51977/74 A IT51977/74 A IT 51977/74A IT 5197774 A IT5197774 A IT 5197774A IT 1016344 B IT1016344 B IT 1016344B
- Authority
- IT
- Italy
- Prior art keywords
- variable
- focal lens
- magnification
- variable magnification
- variable focal
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
-
- 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
- G02B15/142—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 two groups only
-
- 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
- G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/522—Projection optics
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US377533A US3883228A (en) | 1973-07-09 | 1973-07-09 | Variable magnification zoom lens |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1016344B true IT1016344B (it) | 1977-05-30 |
Family
ID=23489495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT51977/74A IT1016344B (it) | 1973-07-09 | 1974-07-08 | Obiettivo a focale variabile per ingrandimento variabile |
Country Status (7)
Country | Link |
---|---|
US (1) | US3883228A (it) |
JP (1) | JPS5039563A (it) |
CA (1) | CA1008281A (it) |
DE (1) | DE2433147A1 (it) |
FR (1) | FR2237212A1 (it) |
GB (1) | GB1468846A (it) |
IT (1) | IT1016344B (it) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5310425A (en) * | 1976-07-16 | 1978-01-30 | Minolta Camera Co Ltd | Objective lens system free from deterioration due to aberration during close-up photography |
CH621414A5 (it) * | 1977-11-15 | 1981-01-30 | Gretag Ag | |
JPS5813887B2 (ja) * | 1979-06-20 | 1983-03-16 | 旭光学工業株式会社 | 複写変倍レンズ系 |
JPS5711333A (en) * | 1980-06-24 | 1982-01-21 | Canon Inc | Slit scanning optical system with variable magnification function |
JPS57201213A (en) * | 1981-06-04 | 1982-12-09 | Canon Inc | Microminiature zoom lens |
JPS5768810A (en) * | 1980-10-18 | 1982-04-27 | Asahi Optical Co Ltd | Variable nagnification lens system for copying |
JPS5768873A (en) * | 1980-10-18 | 1982-04-27 | Asahi Optical Co Ltd | Variable scale factor copying optical device which is capable of magnification and reduction |
JPS57111506A (en) * | 1980-12-27 | 1982-07-12 | Olympus Optical Co Ltd | Lens system having short distance correcting function |
JPS57189109A (en) * | 1981-05-18 | 1982-11-20 | Canon Inc | Optical adjustment method for copyingmachine |
JPS6057311A (ja) * | 1983-09-08 | 1985-04-03 | Asahi Optical Co Ltd | 複写用変倍レンズ |
US4832465A (en) * | 1985-08-14 | 1989-05-23 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens for use in copying |
GB8628333D0 (en) * | 1985-11-28 | 1986-12-31 | Asahi Optical Co Ltd | Zoom lens system |
DK75688A (da) * | 1988-02-15 | 1989-08-16 | Oce Helioprint As | Reprografisk linsesystem og kamera omfattende dette |
US5172275A (en) * | 1990-12-14 | 1992-12-15 | Eastman Kodak Company | Apochromatic relay lens systems suitable for use in a high definition telecine apparatus |
US6807016B2 (en) * | 2000-09-22 | 2004-10-19 | Pentax Corporation | Lens barrel |
JP4800805B2 (ja) * | 2006-03-15 | 2011-10-26 | オリンパスメディカルシステムズ株式会社 | 撮像装置 |
JP2009204752A (ja) * | 2008-02-26 | 2009-09-10 | Sanyo Electric Co Ltd | 複合レンズ |
CN102619014A (zh) * | 2012-04-25 | 2012-08-01 | 常州市润源经编机械有限公司 | 经编机扩布装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3436145A (en) * | 1964-09-17 | 1969-04-01 | Ednalite Corp | Focusing lens pair combined with photocopying objective |
JPS5713849B1 (it) * | 1969-09-08 | 1982-03-19 |
-
1973
- 1973-07-09 US US377533A patent/US3883228A/en not_active Expired - Lifetime
-
1974
- 1974-05-15 CA CA200,015A patent/CA1008281A/en not_active Expired
- 1974-07-08 GB GB3024574A patent/GB1468846A/en not_active Expired
- 1974-07-08 DE DE2433147A patent/DE2433147A1/de active Pending
- 1974-07-08 FR FR7423600A patent/FR2237212A1/fr not_active Withdrawn
- 1974-07-08 IT IT51977/74A patent/IT1016344B/it active
- 1974-07-08 JP JP49078139A patent/JPS5039563A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2237212A1 (it) | 1975-02-07 |
JPS5039563A (it) | 1975-04-11 |
CA1008281A (en) | 1977-04-12 |
US3883228A (en) | 1975-05-13 |
DE2433147A1 (de) | 1975-01-30 |
GB1468846A (en) | 1977-03-30 |
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