GB1321887A - Galilean-type telescope system - Google Patents
Galilean-type telescope systemInfo
- Publication number
- GB1321887A GB1321887A GB3228170A GB3228170A GB1321887A GB 1321887 A GB1321887 A GB 1321887A GB 3228170 A GB3228170 A GB 3228170A GB 3228170 A GB3228170 A GB 3228170A GB 1321887 A GB1321887 A GB 1321887A
- Authority
- GB
- United Kingdom
- Prior art keywords
- negative
- lens
- positive
- refractive power
- members
- 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
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
1321887 Telescope lens systems L BERTELE 2 July 1970 [3 July 1969] 32281/70 Heading G2J A Galilean-type telescope system consists of at least five lens members wherein a negative system component A consisting of at least two air-spaced lens members, the member nearest the eye side having negative refractive power; and a positive system component B comprising at least three air-spaced lens members are separated by an air-gap L 2 . The positive system component has the member disposed closest to the negative system with negative refractive power, and the other members of positive refractive power, at least the lens members having positive refractive power being separated by airgaps. The first lens member of the negative component may have its most strongly curved surface arranged to face the eye in use, and may be two cemented lenses L 1 and L 2 . The negative lens member in the positive system may be cemented doublet L 5 , L 6 , and the refractive index on the eye side of this cemented surface may be larger than that on the object side Optical date are given for four examples.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1030169A CH512748A (en) | 1969-07-03 | 1969-07-03 | Telescopic system of Galilean design |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1321887A true GB1321887A (en) | 1973-07-04 |
Family
ID=4361709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3228170A Expired GB1321887A (en) | 1969-07-03 | 1970-07-02 | Galilean-type telescope system |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT301207B (en) |
CA (1) | CA946193A (en) |
CH (1) | CH512748A (en) |
DE (1) | DE2032130A1 (en) |
GB (1) | GB1321887A (en) |
IT (1) | IT942520B (en) |
-
1969
- 1969-07-03 CH CH1030169A patent/CH512748A/en not_active IP Right Cessation
-
1970
- 1970-06-30 AT AT588770A patent/AT301207B/en not_active IP Right Cessation
- 1970-06-30 CA CA087,009A patent/CA946193A/en not_active Expired
- 1970-06-30 DE DE19702032130 patent/DE2032130A1/en active Pending
- 1970-07-02 GB GB3228170A patent/GB1321887A/en not_active Expired
- 1970-07-03 IT IT8628570A patent/IT942520B/en active
Also Published As
Publication number | Publication date |
---|---|
DE2032130A1 (en) | 1972-01-27 |
CH512748A (en) | 1971-09-15 |
AT301207B (en) | 1972-08-25 |
CA946193A (en) | 1974-04-30 |
IT942520B (en) | 1973-04-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |