GB608584A - Improvements in or relating to four component optical objectives particularly for use as relay lenses in optical sighting devices - Google Patents
Improvements in or relating to four component optical objectives particularly for use as relay lenses in optical sighting devicesInfo
- Publication number
- GB608584A GB608584A GB2255/45A GB225545A GB608584A GB 608584 A GB608584 A GB 608584A GB 2255/45 A GB2255/45 A GB 2255/45A GB 225545 A GB225545 A GB 225545A GB 608584 A GB608584 A GB 608584A
- Authority
- GB
- United Kingdom
- Prior art keywords
- optical
- relating
- component
- relay lenses
- objectives
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
608,584. Optical systems. KODAK, Ltd. Jan. 29, 1945, No. 2255. Convention date, Nov. 20, 1943. [Class 97 (i)] An objective, particularly for use as a relay lens in a sighting instrument such as that disclosed in Specification 608,586, comprises two halves spaced apart an effective distance between .04 F and F, where F is the focal length of the combination, each half consisting of a biconvex component separated from a biconcave component by a distance between .02f and f, where f is the focal length of the half, the radii R3, R6 of the biconcave components being between .08 and .5 of the radii R4, R5. The negative components or all components may be doublets. Data are given for eight examples.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US608584XA | 1943-11-20 | 1943-11-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB608584A true GB608584A (en) | 1948-09-17 |
Family
ID=22032176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2255/45A Expired GB608584A (en) | 1943-11-20 | 1945-01-29 | Improvements in or relating to four component optical objectives particularly for use as relay lenses in optical sighting devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB608584A (en) |
-
1945
- 1945-01-29 GB GB2255/45A patent/GB608584A/en not_active Expired
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