GB508448A - Improvements in soft effect attachments for use with photographic objectives - Google Patents
Improvements in soft effect attachments for use with photographic objectivesInfo
- Publication number
- GB508448A GB508448A GB27609/38A GB2760938A GB508448A GB 508448 A GB508448 A GB 508448A GB 27609/38 A GB27609/38 A GB 27609/38A GB 2760938 A GB2760938 A GB 2760938A GB 508448 A GB508448 A GB 508448A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- attachments
- soft effect
- photographic objectives
- sept
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/20—Soft-focus objectives
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Lens Barrels (AREA)
Abstract
508,448. Lenses. DULO. VITS, J. Sept. 22, 1938, No 27609. Convention date, Sept 24, 1937. [Class 97 (i)] A lens to be placed in front of a photographic objective tc produce a soft-focus effect has one surface D spherical and the other surface divided intc zones A, B, C, of which the intermediate zone A is spherical and concentric with the surface D, while the axial zone C is less strongly and the peripheral zone B is more strongly curved than the zone A, or vice versa.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE508448X | 1937-09-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB508448A true GB508448A (en) | 1939-06-30 |
Family
ID=6546975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27609/38A Expired GB508448A (en) | 1937-09-24 | 1938-09-22 | Improvements in soft effect attachments for use with photographic objectives |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB508448A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6639889B1 (en) | 1997-02-13 | 2003-10-28 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats |
US6788636B2 (en) | 1997-03-28 | 2004-09-07 | Samsung Electronics Co., Ltd. | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens |
US6791933B1 (en) | 1996-08-29 | 2004-09-14 | Samsung Electronics Co., Ltd. | Optical pickup using an optical phase plate |
US6882614B2 (en) | 1996-02-14 | 2005-04-19 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses |
US7372794B2 (en) | 2002-06-05 | 2008-05-13 | Samsung Electronics Co., Ltd. | Compatible optical pickup applying tilt to objective lens in proportion to radial movement of objective lens |
-
1938
- 1938-09-22 GB GB27609/38A patent/GB508448A/en not_active Expired
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6882614B2 (en) | 1996-02-14 | 2005-04-19 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses |
US8503272B2 (en) | 1996-02-14 | 2013-08-06 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses |
US8848502B2 (en) | 1996-02-14 | 2014-09-30 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses |
US6791933B1 (en) | 1996-08-29 | 2004-09-14 | Samsung Electronics Co., Ltd. | Optical pickup using an optical phase plate |
US6985293B2 (en) | 1996-08-29 | 2006-01-10 | Samsung Electronics Co., Ltd. | Optical pickup using an optical phase plate and which is compatible with optical media for different types |
US7072114B2 (en) | 1996-08-29 | 2006-07-04 | Samsung Electronics Co., Ltd. | Optical pickup using an optical phase plate and which is compatible with optical recording media of different types |
US6639889B1 (en) | 1997-02-13 | 2003-10-28 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats |
US6788636B2 (en) | 1997-03-28 | 2004-09-07 | Samsung Electronics Co., Ltd. | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens |
US6816449B2 (en) | 1997-03-28 | 2004-11-09 | Samsung Electronic Co., Ltd. | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens |
US7046611B2 (en) | 1997-03-28 | 2006-05-16 | Samsung Electronics Co., Ltd. | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens |
USRE43106E1 (en) | 1997-03-28 | 2012-01-17 | Samsung Electronics Co., Ltd. | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens |
US7372794B2 (en) | 2002-06-05 | 2008-05-13 | Samsung Electronics Co., Ltd. | Compatible optical pickup applying tilt to objective lens in proportion to radial movement of objective lens |
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