DE318178C - - Google Patents
Info
- Publication number
- DE318178C DE318178C DENDAT318178D DE318178DA DE318178C DE 318178 C DE318178 C DE 318178C DE NDAT318178 D DENDAT318178 D DE NDAT318178D DE 318178D A DE318178D A DE 318178DA DE 318178 C DE318178 C DE 318178C
- Authority
- DE
- Germany
- Prior art keywords
- lens
- objective
- quotient
- refraction
- converging
- 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
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 3
- 229910052601 baryte Inorganic materials 0.000 claims description 3
- 239000010428 baryte Substances 0.000 claims description 3
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 2
- 229910001864 baryta Inorganic materials 0.000 claims description 2
- 239000011521 glass Substances 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000005331 crown glasses (windows) Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000005308 flint glass Substances 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE318178C true DE318178C (enrdf_load_stackoverflow) |
Family
ID=570779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT318178D Active DE318178C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE318178C (enrdf_load_stackoverflow) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US2824492A (en) * | 1955-04-26 | 1958-02-25 | Agfa Camera Werk Ag | Telephoto lens |
| US3113992A (en) * | 1960-11-30 | 1963-12-10 | Keuffel & Esser Co | Focussing telescope lens system |
| DE1202524B (de) * | 1960-11-30 | 1965-10-07 | Continental Elektro Ind Ag | Fernrohrobjektiv |
-
0
- DE DENDAT318178D patent/DE318178C/de active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US2824492A (en) * | 1955-04-26 | 1958-02-25 | Agfa Camera Werk Ag | Telephoto lens |
| US3113992A (en) * | 1960-11-30 | 1963-12-10 | Keuffel & Esser Co | Focussing telescope lens system |
| DE1202524B (de) * | 1960-11-30 | 1965-10-07 | Continental Elektro Ind Ag | Fernrohrobjektiv |
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