DE316246C - - Google Patents
Info
- Publication number
- DE316246C DE316246C DENDAT316246D DE316246DA DE316246C DE 316246 C DE316246 C DE 316246C DE NDAT316246 D DENDAT316246 D DE NDAT316246D DE 316246D A DE316246D A DE 316246DA DE 316246 C DE316246 C DE 316246C
- Authority
- DE
- Germany
- Prior art keywords
- lens
- converging
- lenses
- incident light
- collecting
- 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.)
- Active
Links
- 230000003287 optical Effects 0.000 claims description 2
- 230000005499 meniscus Effects 0.000 claims 2
- 230000004075 alteration Effects 0.000 description 3
- 210000003414 Extremities Anatomy 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 244000043158 Lens esculenta Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/02—Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE316246C true DE316246C (xx) |
Family
ID=568962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT316246D Active DE316246C (xx) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE316246C (xx) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2417330A (en) * | 1942-01-31 | 1947-03-11 | Barr & Stroud Ltd | Lens for optical purposes |
| US2576436A (en) * | 1949-10-08 | 1951-11-27 | Perkin Elmer Corp | Telephoto type objective lens |
| US2730017A (en) * | 1953-11-23 | 1956-01-10 | Voigtlaender Ag | Photographic tele-objective having three lens composite front and rear members |
| US2748657A (en) * | 1953-09-18 | 1956-06-05 | Voigtlaender Ag | Tele-anastigmatic objectives of high light transmitting capacity |
| DE1017812B (de) * | 1955-04-26 | 1957-10-17 | Agfa Camera Werk Ag | Photographisches Teleobjektiv |
| US2819652A (en) * | 1955-03-12 | 1958-01-14 | Agfa Camera Werk Ag Fa | Telephoto objective |
| US2819651A (en) * | 1955-02-23 | 1958-01-14 | Agfa Camera Werk Ag Fa | Telephoto objective |
-
0
- DE DENDAT316246D patent/DE316246C/de active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2417330A (en) * | 1942-01-31 | 1947-03-11 | Barr & Stroud Ltd | Lens for optical purposes |
| US2576436A (en) * | 1949-10-08 | 1951-11-27 | Perkin Elmer Corp | Telephoto type objective lens |
| US2748657A (en) * | 1953-09-18 | 1956-06-05 | Voigtlaender Ag | Tele-anastigmatic objectives of high light transmitting capacity |
| US2730017A (en) * | 1953-11-23 | 1956-01-10 | Voigtlaender Ag | Photographic tele-objective having three lens composite front and rear members |
| US2819651A (en) * | 1955-02-23 | 1958-01-14 | Agfa Camera Werk Ag Fa | Telephoto objective |
| US2819652A (en) * | 1955-03-12 | 1958-01-14 | Agfa Camera Werk Ag Fa | Telephoto objective |
| DE1017812B (de) * | 1955-04-26 | 1957-10-17 | Agfa Camera Werk Ag | Photographisches Teleobjektiv |
| US2824492A (en) * | 1955-04-26 | 1958-02-25 | Agfa Camera Werk Ag | Telephoto lens |
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