GB1389564A - Lenses - Google Patents
LensesInfo
- Publication number
- GB1389564A GB1389564A GB751072A GB751072A GB1389564A GB 1389564 A GB1389564 A GB 1389564A GB 751072 A GB751072 A GB 751072A GB 751072 A GB751072 A GB 751072A GB 1389564 A GB1389564 A GB 1389564A
- Authority
- GB
- United Kingdom
- Prior art keywords
- focal length
- convergent
- parts
- lens
- divergent element
- 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
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/002—Magnifying glasses
- G02B25/004—Magnifying glasses having binocular arrangement
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB751072A GB1389564A (en) | 1972-02-17 | 1972-02-17 | Lenses |
NL7301679A NL181054C (nl) | 1972-02-17 | 1973-02-07 | Vergrootlens waarin met beide ogen kan worden gekeken en die sneller is dan f/1,0, in het bijzonder oculair voor inrichtingen voor nachtelijk zien. |
FR7305689A FR2172415B1 (fr) | 1972-02-17 | 1973-02-16 | |
DE19732307598 DE2307598A1 (de) | 1972-02-17 | 1973-02-16 | Biokulares vergroesserungssystem |
JP48019127A JPS4897550A (fr) | 1972-02-17 | 1973-02-16 | |
US497694A US3922072A (en) | 1972-02-17 | 1974-08-15 | Biocular magnifying lenses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB751072A GB1389564A (en) | 1972-02-17 | 1972-02-17 | Lenses |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1389564A true GB1389564A (en) | 1975-04-03 |
Family
ID=9834512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB751072A Expired GB1389564A (en) | 1972-02-17 | 1972-02-17 | Lenses |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS4897550A (fr) |
DE (1) | DE2307598A1 (fr) |
FR (1) | FR2172415B1 (fr) |
GB (1) | GB1389564A (fr) |
NL (1) | NL181054C (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4322135A (en) | 1978-11-29 | 1982-03-30 | Pilkington P. E. Limited | Optical apparatus |
US4392710A (en) | 1979-11-22 | 1983-07-12 | Pilkington P. E. Limited | Optical apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2535860B1 (fr) * | 1982-11-10 | 1986-02-28 | Trt Telecom Radio Electr | Loupe bioculaire |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1478704A (en) * | 1921-08-13 | 1923-12-25 | Zeiss Carl Fa | Ocular |
-
1972
- 1972-02-17 GB GB751072A patent/GB1389564A/en not_active Expired
-
1973
- 1973-02-07 NL NL7301679A patent/NL181054C/xx not_active IP Right Cessation
- 1973-02-16 FR FR7305689A patent/FR2172415B1/fr not_active Expired
- 1973-02-16 DE DE19732307598 patent/DE2307598A1/de not_active Ceased
- 1973-02-16 JP JP48019127A patent/JPS4897550A/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4322135A (en) | 1978-11-29 | 1982-03-30 | Pilkington P. E. Limited | Optical apparatus |
US4392710A (en) | 1979-11-22 | 1983-07-12 | Pilkington P. E. Limited | Optical apparatus |
Also Published As
Publication number | Publication date |
---|---|
NL7301679A (fr) | 1973-08-21 |
JPS4897550A (fr) | 1973-12-12 |
FR2172415B1 (fr) | 1977-07-22 |
NL181054C (nl) | 1987-06-01 |
FR2172415A1 (fr) | 1973-09-28 |
DE2307598A1 (de) | 1973-08-23 |
NL181054B (nl) | 1987-01-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19930124 |