DE231966C - - Google Patents
Info
- Publication number
- DE231966C DE231966C DENDAT231966D DE231966DA DE231966C DE 231966 C DE231966 C DE 231966C DE NDAT231966 D DENDAT231966 D DE NDAT231966D DE 231966D A DE231966D A DE 231966DA DE 231966 C DE231966 C DE 231966C
- Authority
- DE
- Germany
- Prior art keywords
- eyepiece
- observation
- double
- glass
- screen
- 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
- 239000005337 ground glass Substances 0.000 claims description 13
- 239000011521 glass Substances 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000031711 Cytophagaceae Species 0.000 description 1
- 241001507636 Yersinia phage Berlin Species 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007747 plating 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
- 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)
- Telescopes (AREA)
- Lenses (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE231966C true DE231966C (enrdf_load_stackoverflow) |
Family
ID=492029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT231966D Active DE231966C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE231966C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT231966D patent/DE231966C/de active Active
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