DE299009C - - Google Patents
Info
- Publication number
- DE299009C DE299009C DENDAT299009D DE299009DA DE299009C DE 299009 C DE299009 C DE 299009C DE NDAT299009 D DENDAT299009 D DE NDAT299009D DE 299009D A DE299009D A DE 299009DA DE 299009 C DE299009 C DE 299009C
- Authority
- DE
- Germany
- Prior art keywords
- distortion
- barrel
- lens
- image
- shaped
- 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
- 239000011521 glass Substances 0.000 description 2
- 210000001747 pupil Anatomy 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007704 transition Effects 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
- G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
- G02B23/08—Periscopes
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Telescopes (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE299009C true DE299009C (enrdf_load_stackoverflow) |
Family
ID=553151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT299009D Active DE299009C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE299009C (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4934246A (en) * | 1988-09-30 | 1990-06-19 | Fmc Corporation | Wide angled trapezoidal periscope |
-
0
- DE DENDAT299009D patent/DE299009C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4934246A (en) * | 1988-09-30 | 1990-06-19 | Fmc Corporation | Wide angled trapezoidal periscope |
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